CN205861031U - Total length binding type anchor pole effective anchorage depth the cannot-harm-detection device - Google Patents
Total length binding type anchor pole effective anchorage depth the cannot-harm-detection device Download PDFInfo
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- CN205861031U CN205861031U CN201620417866.7U CN201620417866U CN205861031U CN 205861031 U CN205861031 U CN 205861031U CN 201620417866 U CN201620417866 U CN 201620417866U CN 205861031 U CN205861031 U CN 205861031U
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Abstract
This utility model relates to a kind of total length binding type anchor pole effective anchorage depth the cannot-harm-detection device.The purpose of this utility model is a kind of simple in construction, total length binding type anchor pole easy for installation, lower-cost effective anchorage depth the cannot-harm-detection device, can measure anchor rod anchored length on the premise of not damaging anchor pole.The technical solution of the utility model is: a kind of total length binding type anchor pole effective anchorage depth the cannot-harm-detection device, for measuring the anchorage length of total length binding type anchor pole, anchor pole is placed in the boring of total length filling binding material, anchor pole is fixed on crag through the billet of drilling orifice, it is characterized in that: the acceleration excitation apparatus that anchor pole can apply axial vibration power is installed in the section of stretching out of described anchor pole, being axially installed with some acceleration transducers along it on anchor pole in boring, acceleration transducer acceleration monitoring device outside transmission cable is with boring electrically connects.This utility model is applicable to Geotechnical Engineering.
Description
Technical field
This utility model relates to a kind of total length binding type anchor pole effective anchorage depth the cannot-harm-detection device.It is applicable to ground work
Journey.
Background technology
In the underground engineering in the fields such as mine, water power, traffic, anchor pole has been obtained for being widely applied, and particularly exists
Large underground hole group and high slope utilize anchor pole coordinate concrete as permanent support, adopted in a lot of engineerings
With.Anchor pole primarily serve suspention, extrude, the effect such as reinforcing, be that the pressure from surrounding rock radially extruded is converted into tangential pressure, play
The bearing capacity of country rock self, strengthens the self-stable ability of country rock, prevents plastic zone of surrounding rock from further expanding.Bolt grouting can add
Gu country rock, increase cohesion and the angle of friction of country rock, improve rock mass strength, be that country rock is cemented to continuum fixing collar, become
Whole supporting structure system.
Anchor pole can be divided into total length binding type anchor pole, end anchorage type anchor pole, friction rock bolt etc. according to anchor type, its
The application of middle total length binding type anchor pole is the most universal.Total length binding type anchor pole i.e. bolthole total length filling binding material, binding material
Mainly there are cement mortar, cement mortar, quick-solidified cement anchoring agent, resin (including powder stick formula and resin) etc..Total length binding type anchor pole
Feature bolthole must be made to be full of binding material when being and install, make the space binding material between the body of rod and hole wall fill close
Real, after it condenses, hardens, the body of rod is anchored in rock mass.Total length binding type anchor pole is closely to be glued by binding material and hole wall
Knot.When rock mass deforms, its distortional stress passes to anchor pole by binding material and bears, i.e. anchor pole provides one to rock mass
The power of individual restrained deformation, reduces surrouding rock deformation.
In the Soil Anchor Design of Geotechnical Engineering, the length of anchor pole is generally 3～6m.Effect according to total length binding type anchor pole
Mechanism, after its filling binding material, the part contacted with rock mass in theory will play a role, but due to the stream of binding material
Dynamic property and the restriction of mounting process, the partial-length anchor pole near aperture section can not play a role completely, it is meant that for rock
The anchorage length of body is not reaching to original design requirement, and anchor pole is divided into the section of stretching out, free segment and anchoring section the most in FIG,
Wherein the section of stretching out is fixed on crag by backing plate and nut, and free segment is the length not playing bolt action due to bond quality
Degree, and anchoring section is only and truly plays a role in engineering, and this part is also that design engineer is most concerned.
In order to ensure anchoring quality, engineering occurs in that the detection method that comparison is many.The most frequently used anchor rod anchored matter
The detection method of amount is that set drills through core in bolthole, and this method can detect anchoring quality well, however it is necessary that destruction
The anchor pole installed, needs after testing again to replace installation.Subsequently, lossless detection method starts appearance, these lossless inspections
Survey method depends on the method such as ultrasound wave, acoustic emission mostly, by collecting the sound and light signal of body of rod transmission, it is judged that the defect of anchor pole
And installation quality, but said method can only qualitatively judge the installation quality of anchor pole, it is impossible to accurately measures the anchorage length of anchor pole.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, it is provided that a kind of simple in construction, installation
Convenient, lower-cost total length binding type anchor pole effective anchorage depth the cannot-harm-detection device, can be on the premise of not damaging anchor pole
Measure anchor rod anchored length.
This utility model be the technical scheme is that a kind of total length binding type anchor pole effective anchorage depth Non-Destructive Testing dress
Putting, for measuring the anchorage length of total length binding type anchor pole, anchor pole is placed in the boring of total length filling binding material, and anchor pole is through boring
The billet in aperture, hole is fixed on crag, it is characterised in that: it is provided with in the section of stretching out of described anchor pole and anchor pole can be applied axle
To the acceleration excitation apparatus of vibration force, the anchor pole in boring is axially installed with some acceleration transducers, acceleration along it
Sensor acceleration monitoring device outside transmission cable is with boring electrically connects.
Described acceleration excitation apparatus and acceleration monitoring device are arranged in sleeve, and are arranged on anchor pole through sleeve and stretch out
The termination of section, described acceleration excitation apparatus is connected by pitman and loaded ring are fixing with anchor pole.
It is provided for measuring the compression type of described acceleration excitation apparatus vibration force between described billet and described sleeve
Ergometer.
It is equipped with backing plate between described compression type ergometer two ends and billet and sleeve.
Described sleeve can be along the top being connected to a vertical stabiliser bar of the axial horizontal movement of anchor pole, another of this stabiliser bar
End is fixed on ground.
Described acceleration excitation apparatus uses electromagnetic vibrator, and described acceleration monitoring device uses acceleration pick-up instrument.
The beneficial effects of the utility model are: this utility model utilize acceleration to evaluate anchoring quality, will not be to anchor pole
Producing and destroy, Detection results is more accurate, and structural reliability is higher.When acceleration transducer present position, bonding is the most closely knit
Time, loosening can occur when rockbolt stress in acceleration transducer, thus causes what it was surveyed accekeration vibration occur.
This utility model patent is Non-Destructive Testing, will not produce anchor pole and destroy.Field conduct is simple, is different from other nothing
Damage method of testing and need complicated preparation and fine measuring instrument.This patent all arranges at anchor pole different depth and adds simultaneously
Velocity sensor, Detection results is more accurate, and structural reliability is higher.
Accompanying drawing explanation
Fig. 1 is anchor pole schematic diagram in prior art.
Fig. 2 is the structural representation of this utility model embodiment.
Fig. 3 is the mounting structure schematic diagram of the anchor pole section of stretching out in this utility model embodiment.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the present embodiment is a kind of total length binding type anchor pole effective anchorage depth the cannot-harm-detection device, anchor
Bar 1 is placed in the boring of total length filling binding material, and anchor pole 1 is fixed on crag through the billet 2 of drilling orifice.This example is being bored
In hole, being axially installed with some acceleration transducers 7 along anchor pole 1, the section of stretching out of anchor pole 1 is provided with acceleration excitation apparatus 9 (this
Example uses electromagnetic vibrator) and acceleration monitoring device 10 (this example uses acceleration pick-up instrument), acceleration monitoring device 10 warp
Transmission cable 8 electrically connects with the acceleration transducer 7 in boring.Wherein acceleration excitation apparatus 9 and acceleration monitoring device 10
Being arranged in sleeve 3, and be arranged on the termination of anchor pole 1 section of stretching out through sleeve, acceleration excitation apparatus 9 is by pitman 11 and adds
Load ring 12 is fixing with anchor pole 1 to be connected, and acceleration excitation apparatus 9 has and anchor pole 1 can be applied axial vibration power.
This example middle sleeve 3 connects ground through a vertical stabiliser bar 4, and sleeve 3 can be installed on anchor along anchor pole 1 axially-movable
The termination of bar 1 section of stretching out.The present embodiment is by increasing stabiliser bar, in order to sleeve 3 and anchor pole 1 constitute an entirety, it is to avoid in punching
Produce moment of torsion, particularly horizontal direction when hitting anchor pole 1, easily pitman is had side effects, affect testing result.
The present embodiment, in order to evaluate the true stressing conditions of anchor pole 1, arranges compression type dynamometry between billet 2 and sleeve 3
Meter 5, the power applying acceleration excitation apparatus 9 is checked.Between compression type ergometer 5 two ends and billet 2 and sleeve 3 all
It is provided with backing plate 6, to ensure power transmission and uniform force, it is also possible to ensure the test effect of ergometer.
The operating procedure of the present embodiment is as follows:
S01, rockbolt installation
Total length binding type rockbolt installation has two kinds of methods, when using first inserted link post-grouting method, should first be passed by acceleration
Sensor 7 is fixed on anchor pole 1, is placed in boring by anchor pole 1, is drawn by transmission cable 8, carries out aperture and closes, installs slip casting
Pipe and exhaustor, then infusion and binding material.
When use insert anchor pole method after first slip casting time, should after grouting completes inserted link immediately, should push at a slow speed during inserted link, no
Ballistic method can be used to insert, to ensure the test effect of acceleration transducer 7.Anchor pole 1 can not stress in 48 hours after installing.
S02, acceleration excite to be installed with monitoring device
After complete 28 days of rockbolt installation, installing according to structure shown in Fig. 3, the section of stretching out at anchor pole 1 is installed and is accelerated
Degree excitation apparatus 9 and acceleration monitoring device 10, acceleration monitoring device 10 is connected with transmission cable 8.
S03, valid bonding length detect
Utilizing acceleration excitation apparatus 9 that anchor pole 1 axially applies the active force of 10N～50KN, active force is gradually increased, often
Secondary increase 10KN, in order to test result is checked.Observe what acceleration transducer 7 obtained by acceleration monitoring device 10
Accekeration, if anchor pole 1 is with country rock bonding closely, its accekeration is stable, and numerical value is less, is effective anchor of anchor pole herein
Gu length；If passing accekeration significantly vibration occur, illustrate to bond the most closely knit, anchor pole is loosening, is not the most anchor herein
The valid bonding length of bar.
Claims (6)
1. total length binding type anchor pole effective anchorage depth the cannot-harm-detection device, is used for measuring total length binding type anchor pole (1)
Anchorage length, anchor pole (1) is placed in the boring of total length filling binding material, and anchor pole (1) is fixed through the billet (2) of drilling orifice
On crag, it is characterised in that: it is provided with in the section of stretching out of described anchor pole (1) and anchor pole (1) applying axial vibration power can be added
Speed excitation apparatus (9), the anchor pole (1) in boring is axially installed with some acceleration transducers (7), acceleration sensing along it
The device (7) acceleration monitoring device (10) outside transmission cable (8) is with boring electrically connects.
2. according to the total length binding type anchor pole effective anchorage depth the cannot-harm-detection device described in claim 1, it is characterised in that:
Described acceleration excitation apparatus (9) and acceleration monitoring device (10) are arranged in sleeve (3), and are arranged on anchor pole through sleeve
(1) termination of the section of stretching out, described acceleration excitation apparatus (9) is fixed with anchor pole (1) by pitman (11) and loaded ring (12)
Connect.
3. according to the total length binding type anchor pole effective anchorage depth the cannot-harm-detection device described in claim 2, it is characterised in that:
It is provided for measuring the compression type of described acceleration excitation apparatus (9) vibration force between described billet (2) and described sleeve (3)
Ergometer (5).
4. according to the total length binding type anchor pole effective anchorage depth the cannot-harm-detection device described in claim 3, it is characterised in that:
It is equipped with backing plate (6) between described compression type ergometer (5) two ends and billet (2) and sleeve (3).
5. according to the total length binding type anchor pole effective anchorage depth the cannot-harm-detection device described in Claims 2 or 3 or 4, its feature
It is: described sleeve (3) can be along the top being connected to a vertical stabiliser bar (4) of anchor pole (1) axially horizontal movement, this stabiliser bar
(4) the other end is fixed on ground.
6. according to the total length binding type anchor pole effective anchorage depth the cannot-harm-detection device described in claim 1, it is characterised in that:
Described acceleration excitation apparatus (9) uses electromagnetic vibrator, and described acceleration monitoring device (10) uses acceleration pick-up instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417866.7U CN205861031U (en) | 2016-05-10 | 2016-05-10 | Total length binding type anchor pole effective anchorage depth the cannot-harm-detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417866.7U CN205861031U (en) | 2016-05-10 | 2016-05-10 | Total length binding type anchor pole effective anchorage depth the cannot-harm-detection device |
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| CN205861031U true CN205861031U (en) | 2017-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865397B (en) * | 2016-05-10 | 2019-01-01 | 中国电建集团华东勘测设计研究院有限公司 | The effective anchorage depth lossless detection method of overall length binding type anchor pole and device |
| CN109630201A (en) * | 2018-12-14 | 2019-04-16 | 山东科技大学 | It is a kind of based on roof strata horizontal compression monitoring rock-bolt length determine method |
-
2016
- 2016-05-10 CN CN201620417866.7U patent/CN205861031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865397B (en) * | 2016-05-10 | 2019-01-01 | 中国电建集团华东勘测设计研究院有限公司 | The effective anchorage depth lossless detection method of overall length binding type anchor pole and device |
| CN109630201A (en) * | 2018-12-14 | 2019-04-16 | 山东科技大学 | It is a kind of based on roof strata horizontal compression monitoring rock-bolt length determine method |
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