CN113866033B - Device and method for making rigid structural surface with arbitrary filling thickness under stress environment - Google Patents

Abstract

The device and method for making a rigid structural surface with arbitrary filling thickness under stress environment, including an electro-hydraulic servo controller; the electro-hydraulic servo controller is fixed on the upper side inside the reaction force frame, and the pressure-resistant pad is fixed inside the reaction force frame On the lower side, the upper surface of the compression pad is provided with a lower plate fixed holder, the lower plate fixed holder is placed on the lower plate test piece, the upper plate test piece is placed on the lower plate test piece, and the upper plate test piece The top end is clamped and fixed by the fixed holder of the upper plate, and the joint of the lower plate specimen and the upper plate test piece is fitted with a filling layer sealing interlocking splint, and the outer side of the filling layer sealing interlocking splint is set with a surrounding force ring of the filling layer. A centering rod and a digital display micrometer are installed between the upper disk fixed holder and the lower disk fixed holder. The invention can realize the precise control of the filling thickness of the structural surface, ensure the real-time centering of the upper and lower plate test pieces, and simulate the formation process of the hard structural surface under different stress environments, which is of great significance to the study of the hard structural surface of deep underground engineering.

Description

Device and method for making rigid structural surface with arbitrary filling thickness under stress environment

technical field

The invention belongs to the technical field of rock engineering, and in particular relates to a manufacturing device and a manufacturing method of a rigid structural surface with arbitrary filling thickness in a stress environment.

Background technique

Structural planes play a controlling role in rock mass stability, especially structural planes containing fillers. According to the different structural surface filling materials, the structural surface can be divided into weak structural surface and hard structural surface. The filling materials of weak structural surface have the characteristics of high compressibility and low strength. Chips, mud, silt, etc. The hard structural surface refers to the structural surface whose filling does not contain soft and loose materials. It mainly appears in fresh, slightly weathered and deep high-stress rock masses. Due to its own weight and tectonic stress, the structural surface is in a stress environment, and its characteristics mainly show It is because the filling thickness is thinner, it has cementation effect with the original rock, and the strength is higher. In deep underground engineering, due to excavation and unloading, the hard structural surface is damaged, and engineering accidents such as stress structural collapse and structural surface rockburst are frequently induced. Therefore, research on rigid structural surfaces has important scientific value and urgent engineering needs.

There are usually two ways to obtain rock mass structural surfaces containing fillings: on-site sampling and indoor similar material production. Compared with field sampling, it has high cost, high risk, high difficulty, long period, large discreteness, and low sampling rate. Insufficient, similar materials can be used indoors to make a large number of interview pieces with the same structure conveniently, safely and economically. Therefore, in-house fabrication is an important method to obtain structural surfaces containing fillers.

At present, the main structural surface manufacturing devices and methods mainly focus on the weak structural surface, and there is a large development space for the rigid structural surface manufacturing device and method. The previous devices and methods for making weak structural surfaces are not suitable for hard structural surfaces. Firstly, the devices and methods for making weak structural surfaces do not take into account that the hard structural surfaces are always in a certain stress environment during the formation process; secondly, the weak structural surface manufacturing devices and The method is relatively rough in controlling the thickness of the filling, while the thin-layer hard structural surface needs precise control; third, the device and method for making the soft structural surface are completely incapable of making the hard structural surface in a high-stress environment; finally, the hard structural surface prepared in the laboratory The structural surface filling material is obviously different from the silt, mud and other fluid materials used to make the weak structural surface. The hard structural surface filling material has the characteristics of low fluidity, so when filling the hard structural surface filler, the traditional direct pouring method does not apply. Therefore, the present invention discloses a manufacturing device and a manufacturing method of a rigid structural surface with arbitrary filling thickness under a stress environment, so as to solve the problem that the prior art cannot manufacture a rigid structural surface.

Contents of the invention

The object of the present invention is to provide a device and method for making a rigid structural surface with arbitrary filling thickness in a stress environment, which realizes the simulation of the stress environment during the formation of the structural surface, and provides vertical pressure through continuous pressure application of the electro-hydraulic servo actuator. The surface filling layer sealing system performs multi-directional confining of the structural surface filling layer and applies confining pressure, thereby simulating the stress environment during the formation of the structural surface; on the basis of the above, the present invention realizes super Simulation of formation process of hard structural plane in high stress environment.

In order to achieve the above object, the present invention adopts the following technical solutions:

Fabrication device for rigid structural surface with arbitrary filling thickness under stress environment, including reaction force frame, electro-hydraulic servo actuator, pressure-resistant pad, upper plate fixed holder, lower plate fixed holder, centering rod, digital display micrometer , the sealing interlocking splint of the filling layer, the force applying ring around the filling layer, the upper plate test piece and the lower plate test piece; the electro-hydraulic servo actuator is fixed on the inner upper side of the reaction force frame, and the pressure-resistant pad is fixed on the reaction force On the lower side of the frame, the upper surface of the anti-pressure pad is provided with a lower plate fixed holder, the lower plate fixed holder is placed on the lower plate test piece, the upper plate test piece is placed on the lower plate test piece, and the upper plate The top of the specimen is clamped and fixed by the fixed holder of the upper plate, the joint of the lower plate test piece and the upper plate test piece is set with a filling layer sealing interlocking splint, and the outer side of the filling layer sealing interlocking splint is set with a surrounding force ring of the filling layer. A centering rod and a digital display micrometer are installed between the fixed holder of the upper disk and the fixed holder of the lower disk.

The fixed holder of the upper plate includes an upper pressing head, an upper splint, and an upper fixing screw rod. The upper centering cross bar and the clamping end of the micrometer are respectively arranged on the side wall of the upper pressing head, and the upper centering cross bar and the The tail end of the clamping end of the micrometer is respectively provided with round holes, and the round holes at the clamping end of the micrometer are screwed with screws arranged in the radial direction, and the upper centering cross bar is provided on the two side walls parallel to each other. The upper splint mounting seat, and the upper splint mounting seat is located under the upper centering cross bar. The upper splint mounting seat is docked with the connection part on the top of the upper splint and installed by rotating the shaft. The bottom of the upper splint is extended on both sides and has a through hole , the bottoms of the two upper splints are fixed and installed by upper fixing screws and nuts.

The fixed holder of the lower plate includes a lower pressing head, a lower splint, and a lower fixing screw. There are round holes respectively, the lower centering cross bar is provided, and the lower splint mounting seat is respectively arranged on the two side walls parallel to each other, and the lower splint mounting seat is located above the lower centering cross bar, and the lower splint mounting seat and the lower side The connecting parts at the bottom of the splint are docked and installed by rotating the shaft. The top sides of the lower splint are elongated and have through holes. The bottoms of the two lower splints are fixed and installed by lower fixing screws and nuts.

The sealing interlocking splint of the filling layer is composed of four movable splints, one end of the lower part of the movable splint is provided with a screw, and the other end is elongated and provided with a transverse seam, and the four movable splints pass through the other movable splint through the screw rod of one of the movable splints. The transverse slits of the splints are connected end to end to form interlocking splints, and the tail ends of the screw rods are screwed with butterfly nuts.

The surrounding force ring of the filling layer includes an L-shaped plate, one end of the two L-shaped plates is hinged by a pin, and the other end is connected by a detachable bolt and a nut, and a butterfly is screwed in the center of the two arms of the L-shaped plate. Shaped screws are used to apply confining pressure to the filling layer of the structural surface.

Both the upper side splint and the lower side splint are provided with a rubber layer on the inner side, which is used to protect the test piece, increase friction and prevent the test piece from slipping; the inner side of the movable splint is provided with a rubber layer, which is used to prevent the filler from leaking .

A method for making a rigid structural surface with arbitrary filling thickness in a stress environment, comprising the following steps:

Step 1, select the upper wall specimen and the lower wall specimen of the original rock structural surface sampled on site or the upper wall specimen and the lower wall specimen of the structural surface artificially poured in the laboratory;

Step 2, put the lower plate test piece on the lower pressure head of the lower plate fixing holder, pass the lower fixing screw through the through holes of the two lower side splints and tighten the nuts to fix the lower plate test piece to the lower plate fixing clamp In the holder, place the lower plate fixed holder with the lower plate specimen on the compression pad of the reaction frame;

Step 3, pass the threaded end of the centering rod through the through hole of the lower centering bar of the lower fixed holder and fix it with the nuts set up and down;

Step 4, put the upper plate test piece on the upper pressure head of the upper plate fixing holder, pass the upper fixing screw through the through holes of the two upper side splints and tighten the nuts to fix the upper plate test piece on the upper plate fixing clamp In the holder, pass the upper centering bar of the upper plate fixed holder with the upper plate test piece through the centering rod, and place it on the lower plate fixed holder with the lower plate test piece, so that the upper plate The structural surface of the plate specimen is in contact with the structural surface of the lower plate specimen;

Step 5, install the micrometer on the fixed holder of the upper plate through the clamping end of the micrometer, and adjust the micrometer to zero;

Step 6: Lift the fixed holder of the upper plate, apply a certain amount of original material of the structural surface filler or similar material of the structural surface filler evenly on the structural surface of the lower plate specimen, and then drop the lifted fixed holder of the upper plate to the lower plate. The original material of the filler on the structural surface of the disc test piece or the similar material of the filler on the structural surface are in contact, and record the reading of the digital display micrometer at this time as d ₁ ;

Step 7. Adjust the electro-hydraulic servo actuator so that the pressure head of the actuator is lowered to contact with the upper pressure head of the fixed holder of the upper plate. Adjust the electro-hydraulic servo actuator so that the displacement of the pressure head of the actuator is Δd =d ₁ -d ₀ stop, where d ₀ is the target filling thickness;

Step 8, after the actuator stops descending, clean and smooth the filler original material extruded from the structural surface of the upper plate test piece and the lower plate test piece or the material similar to the structural surface filler;

Step 9, place the filling layer sealed interlocking splint buckle on the structural surface filling layer of the upper wall specimen and the lower wall specimen, and seal the butterfly nut on the interlocking splint with the filling layer to seal the surrounding of the filling layer; The force ring around the layer is placed on the outer side of the sealed interlocking splint of the filling layer, while the disc screws around the force ring around the filling layer on the structural surface are tightened, the butterfly nut of the sealing interlocking splint of the filling layer is loosened at the same time;

Step 10, start the electro-hydraulic servo actuator again, and continue to pressurize with the specified pressure until the filling layer reaches the final setting;

Step 11, demoulding, and the rigid structure interview piece with specified filling thickness is completed.

Technical effect or advantage of the present invention are mainly manifested in:

1. The present invention continuously provides vertical pressure to the filling layer of the structural surface through the combination of the reaction force frame, the electro-hydraulic servo actuator and the pressure-resistant pad. The multi-directional confinement and application of confining pressure realize the simulation of the stress environment during the formation of the structural surface. At the same time, the electro-hydraulic servo actuator is adjusted to continuously apply pressure to the filling layer of the structural surface with different pressures, which can complete different stress environments. For the simulation of the formation process of the lower structural surface, the device of the present invention can repeatedly produce structural test pieces with the same filling thickness, and can also fabricate structural test pieces with the same filling thickness and diagenesis under different stress environments.

2. The present invention uses the combination of the electro-hydraulic servo actuator and the digital display micrometer. The digital display micrometer zeros the contact gap between the upper and lower plate structural surfaces, and measures the filling thickness d1 after the filler through it, and then according to the required The filler thickness determines the actuating displacement of the electro-hydraulic servo actuator. After the electro-hydraulic servo actuator is loaded, the reading of the micrometer at this time is the thickness of the filling layer on the target structural surface. The electro-hydraulic servo actuator first passes the displacement control Loading method, after the electro-hydraulic servo actuator reaches the target displacement to seal the filling layer, then load through force control, so that the thickness of the filling layer on the structural surface can be controlled more accurately and stably, and the thickness accuracy of the filling layer on the structural surface can be increased to 0.01mm , to realize the production of thin-layer filling thickness structure interview pieces.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the device for making a rigid structural surface with arbitrary filling thickness under the stress environment of the present invention;

Fig. 2 is a schematic diagram of the structure of the upper pressure head of the fixed holder structure of the upper plate in the present invention;

Fig. 3 is a schematic diagram of the structure of the lower pressure head of the structure of the fixed clamper of the middle and lower plate of the present invention;

Fig. 4 is a schematic diagram of the structure of the side splint of the structure of the fixed holder of the upper plate in the present invention;

Figure 5 is a schematic diagram of the installation of the middle and lower plate fixing holder and the upper and lower plate test pieces of the present invention;

Fig. 6 is a schematic diagram of the structure of the sealing interlocking plywood of the filling layer in the present invention;

Fig. 7 is a schematic structural diagram of the movable splint of the filling layer sealing interlocking splint in the present invention;

Fig. 8 is a schematic diagram of the structure of the force applying ring around the filling layer in the present invention;

1-Reaction force frame, 2-Electro-hydraulic servo actuator, 3-Pressure pad, 4-Upper plate fixing clamp, 401-Upper pressure head, 402-Upper splint, 403-Upper fixing screw, 404 -Upper centering cross bar, 405-Micrometer clamping end, 406-Round hole, 407-Screw, 408-Through hole, 5-Lower plate fixed holder, 501-Lower pressure head, 502-Lower splint, 503 -Lower fixing screw, 504-Lower centering bar, 505-Micrometer measuring platform, 6-Centering rod, 7-Digital display micrometer, 8-Filled layer sealing interlocking splint, 801-Rubber layer, 802-Transverse seam, 803-screw, 804-wing nut, 9-applying ring around the filling layer, 901-bolt, 902-wing screw, 10-upper plate test piece, 11-lower plate test piece.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1 and Figure 5, the device for making rigid structural surfaces with arbitrary filling thickness under stress environment includes reaction force frame 1, electro-hydraulic servo actuator 2, compression pad 3, upper plate fixing holder 4, lower plate Disk fixing clamper 5, centering rod 6, digital display micrometer 7, filling layer sealing and interlocking splint 8, surrounding force ring 9 of filling layer, upper disk specimen 10 and lower disk specimen 11; the electro-hydraulic servo actuation The device 2 is fixed on the inner upper side of the reaction force frame 1, and the anti-pressure cushion block 3 is fixed on the inner lower side of the reaction force frame 1, and the upper surface of the anti-pressure cushion block 3 is fixedly installed with a lower plate fixing clamper 5, and it is ensured that The two are coaxially arranged, the lower plate fixed holder 5 clamps the lower plate test piece 11, the upper plate test piece 10 is placed on the lower plate test piece 11, the upper surface of the lower plate test piece 11 and the upper plate test piece The lower surface of the test piece 10 is consistent with the upper and lower profiles of the test piece to be prepared, and the top of the upper plate test piece 10 is clamped and fixed by the upper plate fixed holder 4, and the connection between the lower plate test piece 11 and the upper plate test piece 10 Filling layer sealing interlocking splint 8 is set at the seam, and filling layer peripheral force application ring 9 is set on the outer side of filling layer sealing interlocking splint 8, and a pair of fixed clampers 4 and 5 are installed between the upper plate fixed clamper 5 and the lower plate fixed clamper 5. Centering rod 6 and digital display micrometer 7, described centering rod 6 and lower centering cross bar 504 connecting ends are provided with threads, and centering rod 6 is fixed on the lower centering cross bar 504 by nuts arranged up and down, the number The top of the micrometer 7 passes through the micrometer clamping end 405 of the upper plate fixed holder 4 and is fixed by a screw 407, and the measuring head at the bottom end is placed on the upper surface of the micrometer measuring platform 505.

As shown in Figures 2 and 4, the upper plate fixing holder 4 includes an upper pressing head 401, an upper clamping plate 402, and an upper fixing screw 403, and upper centering pins are respectively arranged on the side walls of the upper pressing head 401. The crossbar 404 and the micrometer clamping end 405, wherein the quantity of the upper centering crossbar 404 is three, the quantity of the micrometer clamping end 405 is one, and the tail ends of the upper centering crossbar 404 and the micrometer clamping end 405 are respectively opened There is a round hole 406, and a screw 407 arranged in the radial direction is screwed at the round hole 406 of the clamping end 405 of the micrometer, and an upper centering cross bar 404 is provided and an upper splint is respectively provided on the two side walls parallel to each other The mounting seat, and the upper splint mounting seat is located below the upper centering crossbar 404, the upper splint mounting seat is docked with the connection part on the top of the upper side splint 402 and is installed by rotating the shaft, and the two sides of the upper side splint 402 are elongated and opened. Holes 408, the bottoms of the two upper clamping plates 402 are fixed and installed by upper fixing screws 403 and nuts.

As shown in Figure 3, the lower plate fixing clamper 5 includes a lower pressing head 501, a lower clamping plate 502, and a lower fixing screw 503, and the side walls of the lower pressing head 501 are respectively provided with lower centering cross bars 504. And the micrometer measuring platform 505, wherein the number of the lower centering crossbar 504 is three, the number of the micrometer measuring platform 505 is one and is set correspondingly to the micrometer clamping end 405, and the tail ends of the lower centering crossbar 504 are respectively provided with round holes , the lower centering cross bar 504 is provided and the lower splint mounting seat is respectively provided on the two side walls parallel to each other, and the lower splint mounting seat is located above the lower centering cross bar 504, and the lower splint mounting seat and the bottom of the lower side splint 502 The connecting parts of the two lower side clamping plates 502 are fixed and installed by lower fixing screws 503 and nuts.

As shown in Figure 6 and Figure 7, the sealing interlocking splint 8 of the filling layer is composed of four movable splints, one end of the lower part of the movable splint is provided with a screw 803, the other end is elongated and provided with a transverse seam 802, and the four movable splints The splints are connected end-to-end to form an interlocking splint by one movable splint screw 803 passing through the transverse slit 802 of the other movable splint, and a wing nut 804 is screwed to the tail end of the screw 803 .

As shown in Figure 8, the surrounding force ring 9 of the filling layer includes an L-shaped plate, one end of the two L-shaped plates is hinged by a pin, and the other end is connected by a detachable bolt 901 and a nut. Thumb screws 902 are screwed in the middle of the support arms to apply confining pressure to the filling layer of the structural surface.

The inner sides of the upper splint 402 and the lower splint 502 are provided with a rubber layer 801 for protecting the test piece and increasing friction to prevent the test piece from slipping; the inside of the movable splint is provided with a rubber layer 801 for preventing The filling is leaking slurry.

In this embodiment, taking the production of a test piece containing a hard structural surface interlayer as an example, the upper wall test piece 10 and the lower wall test piece 11 cast with rock-like materials are selected, and the size of both is 100mm×100mm×100mm ; The interlayer thickness of the hard structural surface chosen to be made is 1mm, and the continuous pressurized load is 200KN; the total size of the obtained upper wall specimen 10, lower wall specimen 11 and rigid structural interview specimen is 100mm×100mm×201mm.

A method for making a rigid structural surface with arbitrary filling thickness in a stress environment, comprising the following steps:

Step 1, select the upper wall specimen 10 and the lower wall specimen 11 of the original rock structural surface sampled on site;

Step 2, put the lower plate test piece 11 on the lower pressure head 501 of the lower plate fixing holder 5, pass the lower fixing screw 503 through the through holes of the two lower side splints 502 and tighten the nuts to place the lower plate test piece 11 Fix it in the lower plate fixed holder 5, and place the lower plate fixed holder 5 with the lower plate test piece 11 on the compression pad 3 of the reaction force frame 1;

Step 3, pass the threaded end of the centering rod 6 through the through hole of the lower centering cross bar 504 of the lower plate fixing holder 5 and fix it by the nuts arranged up and down;

Step 4, put the upper plate test piece 10 on the upper pressure head 401 of the upper plate fixing holder 4, pass the upper fixing screw 403 through the through holes of the two upper splints 402 and tighten the nuts to place the upper plate test piece 10 Fix it in the upper plate fixed holder 4, pass the upper centering cross bar 404 of the upper plate fixed holder 4 with the upper plate test piece 10 through the centering rod 6, and place it on the upper plate fixed holder 4 with the lower plate test piece 11, the lower plate is fixed on the holder 5, so that the structural surface of the upper plate test piece 10 is in contact with the structural surface of the lower plate test piece 11;

Step 5, install the micrometer on the upper plate fixing holder 4 through the micrometer clamping end 405, and adjust the micrometer to zero;

Step 6: Lift the upper plate fixing holder 4, apply a certain amount of original material of the structural surface filler or similar material of the structural surface filler evenly on the structural surface of the lower plate test piece 11, and then fix the raised upper plate fixing holder 4 Drop it into contact with the original material of the filler on the structural surface of the lower wall test piece 11 or the similar material of the filler on the structural surface, and record the reading of the digital display micrometer 7 at this time as _d1 ;

Step 7, adjust the electro-hydraulic servo actuator 2 so that the actuator pressure head is lowered to contact with the upper pressure head 401 of the upper plate fixed holder 4, and adjust the electro-hydraulic servo actuator 2 so that the actuator pressure head Stop when the descending displacement is Δd=d ₁ -d ₀ , where d ₀ is the target filling thickness, and the target filling thickness in this embodiment is d ₀ =1mm;

Step 8, after the actuator stops descending, clean and smooth the original filler material extruded from the structural surface of the upper plate test piece 10 and the lower plate test piece 11 or the similar material of the structural surface filler;

Step 9, buckle the filling layer sealing interlocking splint 8 on the structural surface filling layer of the upper wall specimen 10 and the lower wall specimen 11, and seal the wing nut 804 on the filling layer sealing interlocking splint 8 to seal and fill Around the layer; set the surrounding force ring 9 of the filling layer on the outer side of the sealing interlocking splint 8 of the filling layer, while tightening the disc screws around the force ring 9 around the filling layer of the structural surface, loosen the butterfly nut of the sealing interlocking splint 8 of the filling layer 804;

Step 10, start the electro-hydraulic servo actuator 2 again, and continue to pressurize with the specified pressure of 200KN until the filling layer reaches the final setting;

Step 11, demoulding, and the rigid structure test piece with a specified filling thickness of 1 mm is completed. The total size of the upper plate test piece, the lower plate test piece and the rigid structure test piece is 100mm×100mm×201mm.

The present invention has a wide range and flexibility in the selection of the upper and lower plate test pieces. The upper and lower plate test pieces of similar materials can be selected, and natural original rock can also be selected, and even ordinary concrete test pieces can be selected; The control is very accurate, especially for the precise grasp of the thickness of the thin layer. The present invention adds the interlayer material quantitatively and in a fixed volume to obtain the initial filler thickness, and then sets the downward displacement of the actuator through the servo adjustment system to squeeze out the excess filler. At the same time, it is also the process of compacting the filling, and the target interlayer filling thickness is obtained; another advantage of the present invention is that it realizes the simulation of the stress environment during the formation of the structural surface, and provides vertical pressure through the continuous pressure of the servo displacement adjustment system. The surface filling layer sealing system performs multi-directional confining of the structural surface filling layer and applies confining pressure, thereby simulating the stress environment during the formation of the structural surface; on the basis of the above, the present invention realizes super Simulation of formation process of hard structural plane in high stress environment.

Claims (4)

1. A device for making a rigid structural surface with arbitrary filling thickness under a stress environment, which is characterized in that it includes a reaction force frame, an electro-hydraulic servo controller, a pressure-resistant pad, an upper plate fixed clamper, a lower plate fixed clamper, Centering rod, digital display micrometer, filling layer sealed interlocking splint, force ring around the filling layer, upper plate test piece and lower plate test piece; the electro-hydraulic servo controller is fixed on the upper side of the reaction force frame, and the compression resistance The spacer is fixed on the lower side inside the reaction force frame, the upper surface of the anti-pressure spacer is provided with a lower plate fixing holder, the lower plate fixing holder is placed on the lower plate test piece, and the upper plate is placed on the lower plate test piece test piece, and the top of the upper plate test piece is clamped and fixed by the upper plate fixed holder, the joint between the lower plate test piece and the upper plate test piece is set with a filled layer sealed interlocking splint, and the outer side of the filled layer sealed interlocking splint is set There is a force ring around the filling layer, and a centering rod and a digital display micrometer are installed between the fixed holder of the upper disk and the fixed holder of the lower disk; The sealing interlocking splint of the filling layer is composed of four movable splints, one end of the lower part of the movable splint is provided with a screw, and the other end is elongated and provided with a transverse seam, and the four movable splints pass through the other movable splint through the screw rod of one of the movable splints. The transverse joints of the splints are connected end to end to form an interlocking splint, and the tail end of the screw is screwed with a butterfly nut, and a rubber layer is provided on the inner side of the movable splint to prevent the filler from leaking; The surrounding force ring of the filling layer includes an L-shaped plate, one end of the two L-shaped plates is hinged by a pin, and the other end is connected by a detachable bolt and a nut, and a butterfly is screwed in the center of the two arms of the L-shaped plate. Shaped screws are used to apply confining pressure to the filling layer of the structural surface. 2. The device for making a rigid structural surface with arbitrary filling thickness under stress environment according to claim 1, characterized in that: the upper plate fixing clamper includes an upper pressing head, an upper splint, and an upper fixing screw, and the The side wall of the upper indenter is respectively provided with an upper centering cross bar and a micrometer clamping end, and the tail ends of the upper centering cross bar and the micrometer clamping end are respectively provided with round holes, and are screwed at the round holes of the micrometer clamping end. There are screws arranged in the radial direction, the upper centering cross bar is provided, and the upper splint mounting seat is respectively arranged on the two side walls parallel to each other, and the upper splint mounting seat is located under the upper centering cross bar, and the upper splint mounting seat and The connecting part at the top of the upper side splint is docked and installed by rotating the shaft, the bottom of the upper side splint is extended on both sides and has through holes, and the bottom of the two upper side splints are fixed and installed by upper fixing screws and nuts; the inner side of the upper side splint There are rubber layers on the sides to protect the test piece, increase friction and prevent the test piece from slipping. 3. The device for making a rigid structural surface with arbitrary filling thickness under stress environment according to claim 2, characterized in that: the lower plate fixing clamper includes a lower pressing head, a lower splint, and a lower fixing screw, and the The side walls of the lower indenter are respectively provided with a lower centering crossbar and a micrometer measuring platform, and the tail ends of the lower centering crossbar are respectively provided with round holes, and the two side walls which are provided with the lower centering crossbar and are parallel to each other are respectively The lower splint mounting seat is provided, and the lower splint mounting seat is located above the lower centering cross bar. The lower splint mounting seat is docked with the connection part at the bottom of the lower splint and installed by rotating the shaft. The two sides of the top of the lower splint are extended and opened. Through holes, the bottoms of the two lower side splints are fixed and installed by lower fixing screws and nuts, and rubber layers are provided on the inner surfaces of the lower side splints to protect the test piece and increase friction to prevent the test piece from slipping. 4. Adopting the device for making a rigid structural surface of arbitrary filling thickness under a stress environment according to claim 3, the method for manufacturing a rigid structural surface of arbitrary filling thickness under a stress environment is characterized in that, comprising the following steps: Step 1, select the upper wall specimen and the lower wall specimen of the original rock structural surface sampled on site or the upper wall specimen and the lower wall specimen of the structural surface artificially poured in the laboratory; Step 2, put the lower plate test piece on the lower pressure head of the lower plate fixing holder, pass the lower fixing screw through the through holes of the two lower side splints and tighten the nuts to fix the lower plate test piece to the lower plate fixing clamp In the holder, place the lower plate fixed holder with the lower plate specimen on the compression pad of the reaction frame; Step 3, pass the threaded end of the centering rod through the through hole of the lower centering bar of the lower fixed holder and fix it with the nuts set up and down; Step 4, put the upper plate test piece on the upper pressure head of the upper plate fixing holder, pass the upper fixing screw through the through holes of the two upper side splints and tighten the nuts to fix the upper plate test piece on the upper plate fixing clamp In the holder, pass the upper centering bar of the upper plate fixed holder with the upper plate test piece through the centering rod, and place it on the lower plate fixed holder with the lower plate test piece, so that the upper plate The structural surface of the plate specimen is in contact with the structural surface of the lower plate specimen; Step 5, install the micrometer on the fixed holder of the upper plate through the clamping end of the micrometer, and adjust the micrometer to zero; Step 6: Lift the fixed holder of the upper plate, apply a certain amount of original material of the structural surface filler or similar material of the structural surface filler evenly on the structural surface of the lower plate specimen, and then drop the lifted fixed holder of the upper plate to the lower plate. The original material of the filler on the structural surface of the disc test piece or the similar material of the filler on the structural surface are in contact, and record the reading of the digital display micrometer at this time as d ₁ ; Step 7. Adjust the electro-hydraulic servo controller so that the actuator pressure head is lowered to contact with the upper pressure head of the fixed holder on the upper disk. Adjust the electro-hydraulic servo controller so that the actuator pressure head descends with a displacement of ∆d= Stop at d ₁ -d ₀ , where d ₀ is the target filling thickness; Step 8, after the actuator stops descending, clean and smooth the filler original material extruded from the structural surface of the upper plate test piece and the lower plate test piece or the material similar to the structural surface filler; Step 9, place the filling layer sealed interlocking splint buckle on the structural surface filling layer of the upper wall specimen and the lower wall specimen, and seal the butterfly nut on the interlocking splint with the filling layer to seal the surrounding of the filling layer; The force ring around the layer is placed on the outer side of the sealed interlocking splint of the filling layer, while the disc screws around the force ring around the filling layer on the structural surface are tightened, the butterfly nut of the sealing interlocking splint of the filling layer is loosened at the same time; Step 10, start the electro-hydraulic servo controller again, and continue to pressurize with the specified pressure until the filling layer reaches the final setting; Step 11, demoulding, and the rigid structure interview piece with specified filling thickness is completed.