CN205642679U - Novel ground stress test device - Google Patents
Novel ground stress test device Download PDFInfo
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- CN205642679U CN205642679U CN201620409203.0U CN201620409203U CN205642679U CN 205642679 U CN205642679 U CN 205642679U CN 201620409203 U CN201620409203 U CN 201620409203U CN 205642679 U CN205642679 U CN 205642679U
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- detecting earth
- earth stress
- drill bit
- pusher
- photographic head
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- 238000012360 testing method Methods 0.000 title abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 238000004080 punching Methods 0.000 claims abstract description 12
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 4
- 239000010432 diamond Substances 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 208000008918 voyeurism Diseases 0.000 claims description 8
- 239000011435 rock Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 12
- 238000002474 experimental method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000010009 beating Methods 0.000 abstract description 3
- 244000144985 peep Species 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010425 computer drawing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model relates to a novel ground stress test device, including be used for punching on tunnel rock -wall with overlap the coring the drilling subassembly, stress test sensor and pusher, the drilling subassembly rock core tube, rock core tube's one end is connected with the rig drilling rod, and the other end is connected with the drill bit, drill bit front end fixed mounting has a plurality of screw blades that have the diamond of inlaying around drill bit center pin evenly distributed, the last camera that still is connected with of pusher. The beneficial effects of the utility model are that: the adoption has a plurality ofly inlays drill bit that the screw blade that has the diamond made and can avoid traditional drill bit at the swing back and forth who beats sensor aperture in -process, can be better aim at the centre of a circle when beating the aperture to improve the success rate of experiment, in playing, peeps the camera observation effect, and then the accurate broken condition of inserting among the aperture and being convenient for survey the tunnel country rock of ground stress test sensor of being convenient for.
Description
Technical field
This utility model relates to technical field of mechanical equipment, specifically, relates to a kind of novel detecting earth stress device.
Background technology
For Geotechnical Engineering and mining engineering, crustal stress is to cause tunnel wall rock deformation and destruction, supporting lost efficacy and produced the fundamental driving force source of dynamic phenomenon, and in many factors affecting Analyses of Tunnel Wall Rock Stability, high-ground stress is one of main and the most basic factor.Stress of primary rock data are research engineering rock mass mechanics attributes accurately, it is tunnel exploit study and layout safely and efficiently in Geotechnical Engineering, the premise of tunnel reinforcement maintenance, also it is that mining engineering rationally carries out coal mining design, the basis that roadway support optimizes, for the offer Data safeguard of engineering design and the scientification of decision-making.
Detecting earth stress is the important method of the different depth stress of primary rock data obtaining various requirement of engineering at present.The country that the mining industry such as the U.S., Australia, Canada are more flourishing, some important engineerings have the most generally been carried out the actual measurement work of the stress of primary rock, such as some main collieries of Australia are on the basis of carrying out stress measurement in large quantities, depict mining area crustal stress scattergram, for instructing the supporting of underworkings, be conducive to the long-term plan to mining area and production layout.
Crustal stress is the tolerance that under native state, in rock mass, certain point all directions upper stress component is overall, and generally, six components of stress are in relative balance state.Detecting earth stress is then to be holed by construction disturbance in rock mass, breaks its original poised state, and the strain that measurement rock mass stress discharges and produces, by its Stress-strain Effect, indirect determination crustal stress.Existing crustal stress measurement method is a lot, but the more commonly used method can be summarized as three classes, mainly includes stress relief method, hydraulic fracturing, stress restoration.Applying wider method at present is over-coring stress relief method.
The ultimate principle of stress relief method is, after one block of rock takes out from the rock mass of stress effect, owing to the elasticity of its rock can expand deformation, measure the three-dimensional expansion deformation of this block rock after stress relieving, and determine its elastic modelling quantity by the on-the-spot mould calibration that plays, elastic theory can calculate before stress relieving the size and Orientation of stress in rock mass.Specifically this method is first made a call to one exactly in rock and is measured boring, strain gauge is arranged in gaging hole and observed reading, then in the outer concentric locking collar coring of measured hole, core is made to depart from country rock, stress on core recovers because of releasing, according to the difference measured by instrument before and after stress relieving, the size and Orientation of stress can be calculated.
Utility model content
This utility model provides a kind of detecting earth stress device, to be solved technical problem is that existing detecting earth stress device centering effect when spiling is bad, when pushing detecting earth stress sensor into aperture, directional effect is bad, thus the problem that the failure of an experiment rate is high.
The technical scheme that this utility model solves above-mentioned technical problem is as follows:
This utility model provides a kind of novel detecting earth stress device, including for the boring assemblies of punching, detecting earth stress sensor and with for advancing the pusher of detecting earth stress sensor on crag；Wherein said boring assemblies is for punching on crag, and described pushing means is for pushing detecting earth stress sensor in the hole that punching component is accomplished fluently.
Described boring assemblies, including core barrel, one end of described core barrel is connected with drilling rod, the other end is connected with drill bit, the front end of described drill bit is fixedly installed around the equally distributed multiple screw blades of bit central axle, described drill bit should be the interchangeable drill bit of at least two, first beats macropore meeting needs in test process, then gets the requirement of concentric aperture on the basis of macropore.
The beneficial effects of the utility model are: use the drill bit having multiple screw blade to make to avoid conventional drill swinging back and forth in drill process, it is possible to be preferably directed at the center of circle when spiling, thus improve the success rate of experiment.
Preferably, the blade of described screw blade is inlaid with diamond
Preferably, described screw blade is 3-6.
Having the beneficial effects that of above-mentioned preferred version: equally distributed 3-6 screw blade, the most equally distributed 3 screw blades, more meet the principle of mechanics due to it such that it is able to have more preferable positioning action, and then improve the success rate of experiment.
Preferably, described screw blade top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade outboard end and bit central axle angle α are 10 ° to 80 °.
Preferably, the blade of described screw blade outboard end and bit central axle angle α are 30 ° to 60 °.
Having the beneficial effects that of above-mentioned preferred version: when blade and the bit central axle angle α at described screw blade top are 30 ° to 60 °, the drill bit formed due to this angle meets the principle of mechanics, it is more easy on crag punching, it is thus possible to there is more preferable positioning action, and then improve the success rate of experiment.
Preferably, described core barrel two ends are connected with described drilling rod and drill bit respectively by reducer union.
Preferably, one end of described pusher is dismountable with described detecting earth stress sensor to be connected, and described pusher is also associated with photographic head, and described photographic head and described detecting earth stress sensor are connected to same one end of described pusher.
Having the beneficial effects that of above-mentioned preferred version: described photographic head is arranged with detecting earth stress sensor homonymy, on the one hand observation effect can be peeped in playing in the progradation of detecting earth stress sensor, and then be easy to detecting earth stress sensor and be inserted into accurately among aperture, improve the success rate of experiment, on the other hand it is easy to observe the broken situation of tunnel surrounding, plays detecting earth stress and rock crusher observes integrated purpose；And it can be avoided that the problem affecting test accuracy because detecting earth stress sensor during pushing rotates.
Preferably, described photographic head is 360 degree of inner peeping type photographic head rotated.
Preferably, also including video monitoring device, described video monitoring device is wired or wireless with described photographic head to be connected.
Additionally, described boring assemblies also includes the big drill for beating macropore and for polishing the flat drill head bottom macropore, above-mentioned three kinds of drill bits are all dismountable with drilling rod to be connected, and is used interchangeably.Described equipment can provide power by conventional electrical equipment for boring assemblies or propulsion plant.
Carry out stress relief method detecting earth stress by above-mentioned detecting earth stress device to comprise the steps:
(1) macropore is beaten: using the drill bit of a diameter of 130-150mm in boring assemblies to beat macropore to tunnel crag, hole depth is more than 2.5 times of tunnel span, it is ensured that measuring point is positioned at not protolith crustal stress district by rock excavation disturbance.
(2) spiling: polish at the bottom of macropore, and making a call to an aperture concentric with macropore at the bottom of macropore hole with the drill bit with screw blade in boring assemblies, diameter is about 36mm, hole depth about 20-40cm.The wiping head crossed by acetone soak is sent in aperture and is cleaned back and forth, thoroughly to remove the greasy dirt in aperture and other fouls.
(3) sensor is installed: in the cavity of detecting earth stress sensor, fill cementing agent, under the supplementary observation of photographic head, by pusher, detecting earth stress sensor is sent into precalculated position in aperture, push hard mounting rod, to cut off latch, by cementing agent, detecting earth stress sensor is fixed in aperture.After cementing agent solidification, detecting earth stress sensor and aperture are the most cemented together.
(4) stress relieving: after the cementing agent of about 20 hours solidify, continues deepening macropore with thin drilling bit, and every drilling depth 2-4cm records a strain data, until sensor departs from country rock.
(5) data analysis: after stress relieving completes, by the strain value of each foil gauge of computer drawing with the curve of stress relieving change in depth, obtains the stress of primary rock state around aperture, i.e. crustal stress.
Accompanying drawing explanation
Fig. 1 is the structural representation of boring assemblies of the present utility model；
Fig. 2 is the top view of drill bit of the present utility model；
Fig. 3 is the side view of drill bit of the present utility model；
Fig. 4 is the structural representation of pusher of the present utility model.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for explaining this utility model, is not intended to limit scope of the present utility model.
Embodiment 1
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching on crag, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor, described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, the other end is connected with drill bit 12, the front end of described drill bit 12 is fixedly installed along equally distributed 3 screw blades 121 of bit central axle, described drill bit assembly also includes the big drill for beating macropore and for polishing the flat drill head bottom macropore, above-mentioned three kinds of drill bits are all dismountable with drilling rod to be connected, and be used interchangeably.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 10 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also include video monitoring device, described video monitoring device and the wireless connections of described photographic head 4.
Embodiment 2
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor on crag,
Described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, and the other end is connected with drill bit 12, and the front end of described drill bit 12 is fixedly installed along equally distributed 6 screw blades 121 of bit central axle.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 80 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also including video monitoring device, described video monitoring device is wired or wireless with described photographic head 4 to be connected.
Embodiment 3
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor on crag,
Described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, and the other end is connected with drill bit 12, and the front end of described drill bit 12 is fixedly installed along equally distributed 4 screw blades 121 of bit central axle.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 45 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also including video monitoring device, described video monitoring device and described photographic head 4 are by wire wired connection.
Embodiment 4
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor on crag,
Described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, and the other end is connected with drill bit 12, and the front end of described drill bit 12 is fixedly installed along equally distributed 3 screw blades 121 of bit central axle.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 30 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also including video monitoring device, described video monitoring device and described photographic head 4 are by WiFi wireless connections.
Embodiment 5
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor on crag,
Described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, and the other end is connected with drill bit 12, and the front end of described drill bit 12 is fixedly installed along equally distributed 4 screw blades 121 of bit central axle.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 60 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also including video monitoring device, described video monitoring device and described photographic head 4 are by bluetooth wireless connections.
Embodiment 6
As described in Fig. 1-4, this utility model relates to a kind of novel detecting earth stress device, including for the boring assemblies 1 of punching, detecting earth stress sensor 2 and for advancing the pusher 3 of detecting earth stress sensor on crag,
Described boring assemblies 1, including core barrel 11, one end of described core barrel 11 is connected with drilling rod 13, and the other end is connected with drill bit 12, and the front end of described drill bit 12 is fixedly installed along equally distributed 5 screw blades 121 of bit central axle.
Described screw blade 121 top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade 121 outboard end and bit central axle 122 angle α are 50 °.
Described core barrel 11 two ends are connected with described drilling rod 13 and drill bit 12 respectively by reducer union 14.
One end of described pusher 3 is dismountable with described detecting earth stress sensor 2 to be connected, and described pusher 3 is also associated with photographic head 4, and described photographic head 4 and shown detecting earth stress sensor 2 are connected to same one end of described pusher 3.
Described photographic head 4 is 360 degree of inner peeping type photographic head rotated.
Also including video monitoring device, described video monitoring device and described photographic head 4 are by mobile network's wireless connections.
The device of embodiment 1-6 gained is respectively designated as device 1-6, and the device sample as a comparison before improving described in background technology, carrying out many experiments respectively according to the above-mentioned step carrying out stress relief method detecting earth stress, the success rate of experiment is as shown in the table.
Table one device 1-6 and the experiment success rate synopsis of contrast device
| Title | Knife number | α/° | Experiment success rate/% |
| Device 1 | 3 | 10 | 92 |
| Device 2 | 6 | 80 | 88 |
| Device 3 | 4 | 45 | 87 |
| Device 4 | 3 | 30 | 94 |
| Device 5 | 4 | 60 | 90 |
| Device 6 | 5 | 50 | 88 |
| Contrast device | 3 | --- | 63 |
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (9)
1. a novel detecting earth stress device, including for the boring assemblies (1) of punching on tunnel crag, detecting earth stress sensor (2) and for advancing the pusher (3) of detecting earth stress sensor, it is characterised in that:
Described boring assemblies (1), including core barrel (11), one end of described core barrel (11) is connected with drilling rod (13), the other end is connected with drill bit (12), and the front end of described drill bit (12) is fixedly connected with around the equally distributed multiple screw blades of bit central axle (121).
Novel detecting earth stress device the most according to claim 1, it is characterised in that: it is inlaid with diamond on the blade of described screw blade.
Novel detecting earth stress device the most according to claim 1, it is characterised in that: described screw blade (121) is 3-6.
Novel detecting earth stress device the most according to claim 1, it is characterized in that: described screw blade (121) top is at the triangle that is projected as of drill axis place plane, and the blade of described screw blade (121) outboard end and bit central axle (122) angle α are 10 ° to 80 °.
Novel detecting earth stress device the most according to claim 4, it is characterised in that: the blade of described screw blade (121) outboard end and bit central axle (122) angle α are 30 ° to 60 °.
6. according to the arbitrary described novel detecting earth stress device of claim 1-5, it is characterised in that: described core barrel (11) two ends are connected with described drilling rod (13) and drill bit (12) respectively by reducer union (14).
Novel detecting earth stress device the most according to claim 6, it is characterized in that: one end of described pusher (3) is dismountable with described detecting earth stress sensor (2) to be connected, being also associated with photographic head (4) on described pusher (3), described photographic head (4) and described detecting earth stress sensor (2) are connected to same one end of described pusher (3).
Novel detecting earth stress device the most according to claim 7, it is characterised in that: described photographic head (4) is 360 degree of inner peeping type photographic head rotated.
Novel detecting earth stress device the most according to claim 7, it is characterised in that: also including video monitoring device, described video monitoring device is wired or wireless with described photographic head (4) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409203.0U CN205642679U (en) | 2016-05-06 | 2016-05-06 | Novel ground stress test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409203.0U CN205642679U (en) | 2016-05-06 | 2016-05-06 | Novel ground stress test device |
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| Publication Number | Publication Date |
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| CN205642679U true CN205642679U (en) | 2016-10-12 |
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| CN201620409203.0U Expired - Fee Related CN205642679U (en) | 2016-05-06 | 2016-05-06 | Novel ground stress test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841855A (en) * | 2016-05-06 | 2016-08-10 | 中国矿业大学(北京) | Novel ground stress test device |
| CN108952679A (en) * | 2018-09-20 | 2018-12-07 | 中国矿业大学(北京) | Drilling hole stress directional monitoring device and method |
| CN109577971A (en) * | 2018-12-17 | 2019-04-05 | 中国科学院武汉岩土力学研究所 | Detecting earth stress device and test method |
| CN112414936A (en) * | 2020-11-10 | 2021-02-26 | 山东大学 | Tunnel mechanical characteristic detection system and method |
-
2016
- 2016-05-06 CN CN201620409203.0U patent/CN205642679U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841855A (en) * | 2016-05-06 | 2016-08-10 | 中国矿业大学(北京) | Novel ground stress test device |
| CN108952679A (en) * | 2018-09-20 | 2018-12-07 | 中国矿业大学(北京) | Drilling hole stress directional monitoring device and method |
| CN109577971A (en) * | 2018-12-17 | 2019-04-05 | 中国科学院武汉岩土力学研究所 | Detecting earth stress device and test method |
| CN112414936A (en) * | 2020-11-10 | 2021-02-26 | 山东大学 | Tunnel mechanical characteristic detection system and method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20210506 |