CN209025646U - A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling - Google Patents
A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling Download PDFInfo
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- CN209025646U CN209025646U CN201821808980.8U CN201821808980U CN209025646U CN 209025646 U CN209025646 U CN 209025646U CN 201821808980 U CN201821808980 U CN 201821808980U CN 209025646 U CN209025646 U CN 209025646U
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- grouting pipe
- stopping device
- grout stopping
- grouting
- supporting plate
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Abstract
The utility model discloses the grouting devices that open-hole section crack water burst is blocked in a kind of mine drilling, it is made of Grouting Pipe and grout stopping device, grout stopping device is mounted on the slip casting outlet end of Grouting Pipe, and Grouting Pipe runs through grout stopping device, grout stopping device is column structure, the axis of grout stopping device and the axis of Grouting Pipe it is parallel or be overlapped, the radial section diameter of the grout stopping device is equal to or less than the internal diameter of mine drilling, the grout stopping device flows to direction according to Grouting Pipe setting slurries and is successively made of pressing plate, expanding layer and supporting plate, and the material of the expanding layer is the material of water swelling.Injection rapid hardening slurries reach quick slip casting, the purpose of quick water blockoff in open-hole blow section under the conditions of the water burst in drilling may be implemented in from the utility model to large-diameter borehole.
Description
Technical field
It is big to be related to a kind of down-hole to the water hazard prediction field of water burst in down-hole big diameter borehole for the utility model
The grouting device of quick blocking open-hole section crack water burst in bore drilling.
Background technique
Here statement only provides background information related with the utility model, without necessarily constituting the prior art.
In the mine construction of pit mining and production process, larger amount of water source is needed to carry out the dedusting of underground and disappear
It is anti-；Or in order to transport needs, Large Diameter Engineering hole of constructing in entry downward horizontal tunnel on mine, as slipping coal (slag)
Well, cable shaft or piping shaft use.When pit mining working face buried depth is relatively deep (being generally no less than 500m away from earth's surface), and distance contains
When water layer relatively nearly (being usually no more than 200m), supplied water often than using ground well-water supplies using down-hole big diameter borehole
It is economical convenient more.But the risk that underground big diameter borehole faces of constructing is the envelope after drilling exposure geopressured aquifer to water burst
It is stifled, it blocks in particular for the water burst of the drilling of larger aperture as problem.Occur water burst in big diameter borehole and cannot be timely
It blocks, consequence not only can influence in various degree working face and normally produce, and increase mine drainage amount, also will cause work when serious
The safety accident that face is flooded.It discloses and biggish splits containing water guide in the big diameter borehole that down-hole diameter is more than Φ 300mm at present
After gap, since aperture is big, under identical hydraulic pressure, water yield drills much greater than small-bore.Occurs high pressure in small diameter hole
Traditional closure mode of water burst is that the slurry casting machine slip casting of tripping in mould bag blocks using the direct slip casting of borehole casing, or in hole.But benefit
Blocking water burst in big diameter borehole with above two method, there is larger difficulty.The reason is that utilizing brill in big diameter borehole
When hole sleeve slip casting, need the filling adaptor of very big diameter that could match with larger-diameter drilling inner sleeve, because of heavy caliber
Sleeve upper end portion is difficult to screw thread, and welding and gas cutting mode can only be leaned on to install and connect with the matched major diameter slip casting of casing diameter
Head, but when because of installation in hole with the presence of water burst, welding and torch operation to filling adaptor bring extreme difficulty, and install matter
Amount is difficult to ensure；According to mould bag slurry casting machine slip casting, because volume is larger after being filled in slurry dilatancy in mould bag, heavier-weight is difficult
To be attached on thinner Grouting Pipe (being usually no more than 50mm), mould bag easily generates sliding break-off relative to Grouting Pipe,
Mould bag is caused only to starch failure.Mould bag after expansion makes mould bag only starch position and changes, influence slip casting effect once being detached from.When
After there is sealing failure, is reinstalled after mould bag is proposed drilling finishing, during proposing drilling, be detached from Grouting Pipe
Mould bag is very likely fallen in big diameter borehole, leads to fish accident in drilling.In addition it can be clamped on after the slip casting of mould bag
On hole wall, it is difficult to be proposed in drilling with Grouting Pipe, bring difficulty to next step probing work.
Utility model content
In order to solve the deficiencies in the prior art, the one side of the utility model is to provide a kind of interior closure open-hole of mine drilling
The grouting device of section crack water burst, to large-diameter borehole, (aperture is generally more than Φ under the conditions of may be implemented the water burst in drilling
Injection rapid hardening slurries reach quick slip casting, the purpose of quick water blockoff in open-hole blow section in 300mm).
To achieve the goals above, the technical solution of the utility model are as follows:
A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling, is made of Grouting Pipe and grout stopping device, only starches
Device is mounted on the slip casting outlet end of Grouting Pipe, and Grouting Pipe runs through grout stopping device, and grout stopping device is column structure, the axis of grout stopping device with
The axis of Grouting Pipe is parallel or is overlapped, and the radial section diameter of the grout stopping device is equal to or less than the internal diameter of mine drilling, described
Grout stopping device flows to direction according to Grouting Pipe setting slurries and is successively made of pressing plate, expanding layer and supporting plate, the material of the expanding layer
For the material of water swelling.
Grout stopping device configuration design can be such that grout stopping device freely moves up and down in mine drilling, expand after expanding layer water suction,
Under the action of pressing plate and supporting plate, expanding layer can only be radially expanded, so that expanding layer is fitted closely with mine drilling, be prevented
Crevice water continues the gap exudation between grout stopping device and mine drilling, is then passing through Grouting Pipe slip casting into mine drilling,
So that water burst crack is blocked by slip casting.
Preferably, pressing plate side is contacted with expanding layer, and the other side of pressing plate, which is equipped with, above screws pressure cap, the side of supporting plate with it is swollen
Swollen layer contact, the other side of supporting plate are equipped with backspin and press cap, and Grouting Pipe is equipped with external screw thread, above screws pressure cap and backspin presses cap
Inner wall is equipped with the internal screw thread cooperated with external screw thread.
Preferably, the Grouting Pipe is made of upper Grouting Pipe and grout stopping device Grouting Pipe, upper Grouting Pipe and grout stopping device Grouting Pipe
It is connected through a screw thread, grout stopping device Grouting Pipe runs through grout stopping device.
Preferably, upper Grouting Pipe is equipped with valve.
Preferably, upper Grouting Pipe is set there are two filling adaptor.Two filling adaptors are equipped with valve.
Preferably, including having the drilling machine of chuck, chuck is by Grouting Pipe clamping fixed.
Preferably, the axis of grout stopping device is overlapped with the axis of Grouting Pipe.
The utility model has the following beneficial effects:
1, the utility model can preferably solve burst problem in down-hole big diameter borehole well.
2, the principle that the utility model is expanded after being immersed in water using the expanding material with flexible, in Rigid Plates Under Compression under
Under supporting plate compacting, it can only expand and stretch to surrounding, block the gap between rigid grout stopping device and the big diameter borehole borehole wall, reach
Sealing only starches purpose.
3, the utility model has prevented big using mould bag body product in mould bag only slurry slip casting, and weight is easy greatly in Grouting Pipe sliding
De- the drawbacks of shifting and sealing is caused only to starch failure, the problem for being difficult to propose drilling in hole is stuck in after having prevented mould bag slip casting.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the inspection figure of grout stopping device water-stagnating effect；
Fig. 3 is the slip casting schematic diagram of grouting device；
Fig. 4 is after blocking crack water burst and to answer the completion figure of brill；
Wherein, 1, filling adaptor I, 2, valve I, 3, on screw pressure cap, 4, expanding layer, 5, antiadhesion barrier, 6, crack, 7, slip casting
Connector II, 8, valve II, 9, big diameter borehole, 10, upper Grouting Pipe, 11, pressing plate, 12, supporting plate, 13, backspin press cap, 14, only
Starch device Grouting Pipe, 15, water burst in crack, 16, mixed serum induration.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Mine drilling described in the disclosure is the big diameter borehole that diameter crosses Φ 300mm.
As background technique is introduced, existing in the prior art can not preferably be solved in down-hole big diameter borehole well
Water burst is insufficient, and in order to solve technical problem as above, the present disclosure proposes open-hole section crack water burst is blocked in a kind of mine drilling
Grouting device.
A kind of exemplary embodiment of the disclosure provides a kind of interior slip casting for blocking open-hole section crack water burst of mine drilling
Device is made of Grouting Pipe and grout stopping device, and grout stopping device is mounted on the slip casting outlet end of Grouting Pipe, and Grouting Pipe runs through grout stopping device,
Grout stopping device is column structure, and the axis of Grouting Pipe is parallel or coincidence, the radial section of the grout stopping device are straight for the axis of grout stopping device
Diameter is equal to or less than the internal diameter of mine drilling, and the grout stopping device flows to direction successively by pressing plate, swollen according to Grouting Pipe setting slurries
Swollen layer and supporting plate composition, the material of the expanding layer are the material of water swelling.
Grout stopping device configuration design can be such that grout stopping device freely moves up and down in mine drilling, expand after expanding layer water suction,
Under the action of pressing plate and supporting plate, expanding layer can only be radially expanded, so that expanding layer is fitted closely with mine drilling, be prevented
Crevice water continues the gap exudation between grout stopping device and mine drilling, is then passing through Grouting Pipe slip casting into mine drilling,
So that water burst crack is blocked by slip casting.
Supporting plate is consolidated with grouting serous fluid in order to prevent, in one or more embodiments of the embodiment, supporting plate
Surface is equipped with adherent layer, and the adherent layer is that two layers of plastic film is adhered to supporting plate surface, carries out gluing envelope between two layers of plastic film
It closes.Supporting plate can be effectively prevent to be consolidated with grouting serous fluid, realize rigid grout stopping device and slurries under the traction of Grouting Pipe
The disengaging of induration drills the safe and smooth proposition of grouting device.
The relative displacement of pressing plate and supporting plate in order to prevent, in one or more embodiments of the embodiment, pressing plate side
It is contacted with expanding layer, the other side of pressing plate, which is equipped with, above screws pressure cap, and the side of supporting plate is contacted with expanding layer, and the other side of supporting plate is set
There is backspin to press cap, Grouting Pipe is equipped with external screw thread, above screws pressure cap and backspin presses the inner wall of cap and is equipped with and cooperates with external screw thread
Internal screw thread.Pressing plate and supporting plate are fixed by screwing pressure cap up and down, so that expanding layer is more preferably to being radially expanded.
In order to facilitate the installation of, in one or more embodiments of the embodiment, the Grouting Pipe is by upper Grouting Pipe and only
Device Grouting Pipe composition is starched, upper Grouting Pipe and grout stopping device Grouting Pipe are connected through a screw thread, and grout stopping device Grouting Pipe runs through grout stopping device.
In order to facilitate slip casting, sealing, in one or more embodiments of the embodiment, upper Grouting Pipe is equipped with valve.
Slip casting is carried out while being perfused using two different component, is perfused while two kinds of components for convenience, the implementation
In one or more embodiments of mode, upper Grouting Pipe is set there are two filling adaptor.Two filling adaptors are equipped with valve.
In one or more embodiments of the embodiment, the drilling machine including having chuck, chuck consolidates slip casting pipe clamp
It is fixed.
In one or more embodiments of the embodiment, the axis of grout stopping device is overlapped with the axis of Grouting Pipe.Facilitate control
Posture of the grout stopping device processed in mine drilling.
In order to enable those skilled in the art can clearly understand the technical solution of the disclosure, below with reference to tool
The embodiment of body illustrates the technical solution of the disclosure.
Embodiment
A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling, as shown in Figure 1, by Grouting Pipe and grout stopping device
Composition, the Grouting Pipe includes upper Grouting Pipe 10, grout stopping device Grouting Pipe 14, and grout stopping device Grouting Pipe 14 is threadedly attached in note
The outlet of pipe 10 is starched, the input end of upper Grouting Pipe 10 is equipped with filling adaptor I 1 and filling adaptor II 7, and filling adaptor I 1 is equipped with valve
Door I 2, filling adaptor II 7 are equipped with valve II 8.Grout stopping device Grouting Pipe 14 runs through grout stopping device.The both ends of grout stopping device Grouting Pipe 14 are equal
Equipped with external screw thread.
Grout stopping device is column structure, successively includes above screwing pressure cap 3, pressing plate 11, expanding layer by grouting serous fluid flow direction
4, supporting plate 12, backspin press cap 13, antiadhesion barrier 5 forms, and above screw pressure cap 3 and backspin presses cap 13 and is equipped with connected pathways, pass through
Wear vias inner walls and be equipped with the internal screw thread that cooperate with 14 external screw thread of grout stopping device Grouting Pipe, pressing plate 11, expanding layer 4,12 sets of supporting plate stop
It starches in device Grouting Pipe 14, presses threaded connection of the cap 13 in grout stopping device Grouting Pipe 14 by above screwing pressure cap 3 and backspin, so that
Pressing plate 11 and supporting plate 12 compress expanding layer.12 bottom surface of supporting plate be equipped with antiadhesion barrier 5, antiadhesion barrier 5 by 12 bottom surface of supporting plate, under screw
13 outer surface of pressure cap, grout stopping device Grouting Pipe 14 exit surface cladding.
As shown in figures 1-4, steps are as follows for detailed process:
Production and assembly of the construction site to grout stopping device in grouting device.
1, water burst is occurred by the slag well (big diameter borehole 9) that slips of -360 water well drilling of -240 horizontal direction according to horse village iron ore
Depth at 32m, determine that installation site of the rigidity grout stopping device in drilling is located at the position big diameter borehole depth 30m；According to
Big diameter borehole aperture is that 300mm determines that the diameter of grouting device is 280mm.
2, rigid grout stopping device is made.Selecting 14 outer diameter of grout stopping device Grouting Pipe is 60mm, wall thickness 4mm.Therefore according to grout stopping device
14 outer diameter of Grouting Pipe and big diameter borehole diameter, determine pressing plate 11 and 12 outer diameter of lower pallet is 280mm, and central eye diameter is 62mm.
Pressing plate 11 and lower pallet 12 are process with the iron plate with a thickness of 20mm according to above-mentioned diameter dimension, and two surface requirements are smooth,
And circumference end surfaces want smooth.
3, grout stopping device Grouting Pipe 14 is respectively at 12 position of pressing plate 11 and lower pallet with machine tooling screw thread.Button-type is common
Screw buckle.On screw pressure cap 3 and backspin presses 13 internal diameter of cap and the matched grout stopping device Grouting Pipe 14 of button-type matches.Only starch
Internal buckle is processed on 14 top of device Grouting Pipe, is common tube sub-buckle.The upper Grouting Pipe 10 that its button-type is wanted and is attached thereto is identical.
4, selection has toughness and meets the expanding layer 4 of water energy expansion.According to live needs, the donkey hide conduct parched has been selected
The material of expanding layer 4.Donkey hide is good according to pressing plate 11 or 12 specification shape processing of supporting plate.
5, rigid grout stopping device is assembled.First successively backspin press cap 13, supporting plate 12, donkey hide 4, pressing plate 11, on screw pressure
Cap 3 is covered in sequence in grout stopping device Grouting Pipe 14, then screws pressure cap 3 respectively and backspin presses cap 13, make supporting plate
12 and pressing plate 11 donkey hide is tightly pressed at the inside, and be compacted.Donkey hide is exposed in the part of 12 outside of pressing plate 11 and lower pallet
It eliminates.
6, antiadhesion barrier is installed.What antiadhesion barrier 5 was selected is thick plastic foil with a certain toughness, two layers of plastic foil point, internal layer
It is pasted on the bottom surface of supporting plate 12 with seccotine, prevents slurries from entering the contact surface of inner layer film Yu supporting plate 12 after posting
On.It is closed with strength glue at the edge of outer layer and internal layer.With same method plastic foil exposure in grout stopping device Grouting Pipe 14
Part also wrap up.
Installation and grouting operation step of the grouting device in drilling
1, with Grouting Pipe 10 by screwed connection rigidity grout stopping device Grouting Pipe 14, by upper Grouting Pipe 10 rigid grout stopping device
It is sent at the projected depth in big diameter borehole i.e. 30m.Upper 10 upper end of Grouting Pipe chuck of rig clamping fixed, and connect respectively
Connect valve I, valve II and filling adaptor I, filling adaptor II.Above-mentioned two valve is kept it turned on.
2, when drawing rigid grout stopping device using upper Grouting Pipe 10 and being lowered into big diameter borehole, keep eye in Grouting Pipe smooth
It is logical, so that water burst 15 in crack 6 is overflowed from two filling adaptors respectively by eye in Grouting Pipe, another part water can be from rigidity
It overflows in gap between grout stopping device and borehole wall.It can reduce the resistance that grouting device is transferred in big diameter borehole in this way.
3, valve I 2, the valve II 8 at upper 10 top of Grouting Pipe are closed respectively.Observe the water burst situation in big diameter borehole 9.
When water burst stops in big diameter borehole 9, illustrate the closed gap of rigid grout stopping device and the borehole wall after donkey hide water swelling, tentatively
Water-stagnating effect is reached.
4, also to postpone a period of time after sealing is qualified, expand donkey hide sufficiently, improve the water-stagnating effect of rigid grout stopping device.
5, after rigid grout stopping device sealing is qualified, high-pressure rubber pipe is connected on filling adaptor I and filling adaptor II respectively, and make
Two-way high-voltage tube is separately connected corresponding grouting pump.Two grouting pumps and the high-pressure rubber pipe being attached thereto convey two kinds of A, B slurries respectively
Liquid.
6, it is separately turned on valve I 2, valve II 8, starts grouting pump, passes through filling adaptor I, filling adaptor II, upper Grouting Pipe
10, the internal pressure clear water into the big diameter borehole 9 of rigid grout stopping device lower part of grout stopping device Grouting Pipe 14 observes 9 well head of big diameter borehole
Whether place has water spilling.When water injection pressure reaches grouting design pressure and the anhydrous spilling of well head, illustrate rigid grout stopping device sealing
It is up-to-standard, slip casting can be carried out by grouting device.
7, the cement-water-clay system with rapid hardening characteristic is selected in slip casting.Cement grade is P.O 42.5R, waterglass
Baume degrees is 35~40Be, and modulus 2.4~2.8, two kinds of slurry volume ratios are 1:1.Crevice water pressure values 2.3MPa according to this,
Slip casting is selected to terminate pressure as 5MPa.
The step of dismounting grouting device after slip casting
1, upper Grouting Pipe 10 is promoted by chuck strength with drilling machine, because there is antiadhesion barrier, rigid grout stopping device is easy to be detached from
Mixed serum induration in big diameter borehole 9.By the connection of root removal Grouting Pipe, rigid grout stopping device is finally proposed heavy caliber
Except drilling 9.
2, tripping in drill bit bores again in big diameter borehole 9, clears away heavy caliber according to the drilling technology in former big diameter borehole 9
After mixed serum induration 16 in drilling 9, continue to creep into.
It constructed on August 16th, 2013 in horse village iron ore according to the step of above-described embodiment, in -240 horizontal directions -
360 divergences 2 slip slag well, in order to which waste residue is transported to ground with mine car in -360 landing-stations.Slip the design of slag well
Diameter 1200mm, open-work diameter 300mm.It is constructed with anti-well method.Slipping slag well full section rock is griotte, griotte cranny development.
When open-work construction is to 32m, there is water burst, water yield is calculated for 74.6m3/ h, water burst are overflow outside roadway to promotion vertical,
The normal transport of the roadway is hindered, the effluent cost of mine is increased, and mine drainage safety will be seriously threatened.Because of aperture
Greatly, drilling does not have slip casting casing, so either being blocked still using setting of casing slip casting, all there is one for lower die bag slip casting closure
Determine risk, handles bad will result in and scrapping for project amount is completed, also to change design.Therefore according to rock property and drilling
The complete situation of hole wall, is simulated repeatedly through testing, final to use rigid water-stop sealing only slurry grouting behind shaft or drift lining water blockoff.
Using above-mentioned technology, the water burst crack in 3 two wells slipped in slag well of horse village iron ore is preferably blocked, has been obtained
Promising result.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (7)
1. blocking the grouting device of open-hole section crack water burst in a kind of mine drilling, characterized in that by Grouting Pipe and grout stopping device group
At grout stopping device is mounted on the slip casting outlet end of Grouting Pipe, and Grouting Pipe runs through grout stopping device, and grout stopping device is column structure, grout stopping device
Axis it is parallel with the axis of Grouting Pipe or be overlapped, the radial section diameter of the grout stopping device is equal to or less than the interior of mine drilling
Diameter, the grout stopping device flow to direction according to Grouting Pipe setting slurries and are successively made of pressing plate, expanding layer and supporting plate, the expanding layer
Material be water swelling material.
2. grouting device as described in claim 1, characterized in that supporting plate surface is equipped with adherent layer, and the adherent layer is two layers
Plastic foil is adhered to supporting plate surface, carries out gluing closing between two layers of plastic film.
3. grouting device as described in claim 1, characterized in that pressing plate side is contacted with expanding layer, and the other side of pressing plate is set
Pressure cap is screwed on having, the side of supporting plate is contacted with expanding layer, and the other side of supporting plate is equipped with backspin and presses cap, and Grouting Pipe is equipped with outer spiral shell
Line, above screws pressure cap and backspin presses the inner wall of cap equipped with the internal screw thread cooperated with external screw thread.
4. grouting device as described in claim 1, characterized in that the Grouting Pipe is by upper Grouting Pipe and grout stopping device Grouting Pipe group
At upper Grouting Pipe and grout stopping device Grouting Pipe are connected through a screw thread, and grout stopping device Grouting Pipe runs through grout stopping device.
5. grouting device as described in claim 1, characterized in that upper Grouting Pipe is equipped with valve.
6. grouting device as described in claim 1, characterized in that upper Grouting Pipe sets that there are two filling adaptors.
7. grouting device as described in claim 1, characterized in that the axis of grout stopping device is overlapped with the axis of Grouting Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821808980.8U CN209025646U (en) | 2018-11-02 | 2018-11-02 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821808980.8U CN209025646U (en) | 2018-11-02 | 2018-11-02 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
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| Publication Number | Publication Date |
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| CN209025646U true CN209025646U (en) | 2019-06-25 |
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ID=66908910
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821808980.8U Expired - Fee Related CN209025646U (en) | 2018-11-02 | 2018-11-02 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
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| CN (1) | CN209025646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236231A (en) * | 2018-11-02 | 2019-01-18 | 济南力稳岩土工程有限公司 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
| CN111502596A (en) * | 2020-05-20 | 2020-08-07 | 陕西正通煤业有限责任公司 | Extrusion device for replacing slurry during drilling and water pressing and construction process |
-
2018
- 2018-11-02 CN CN201821808980.8U patent/CN209025646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236231A (en) * | 2018-11-02 | 2019-01-18 | 济南力稳岩土工程有限公司 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
| CN109236231B (en) * | 2018-11-02 | 2024-04-09 | 济南力稳岩土工程有限公司 | Grouting device for plugging water burst in bare hole section crack in mine drilling |
| CN111502596A (en) * | 2020-05-20 | 2020-08-07 | 陕西正通煤业有限责任公司 | Extrusion device for replacing slurry during drilling and water pressing and construction process |
| CN111502596B (en) * | 2020-05-20 | 2024-03-12 | 陕西正通煤业有限责任公司 | Extrusion device for drilling and grouting replacement and construction process |
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Granted publication date: 20190625 |