CN207989022U - A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture - Google Patents
A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture Download PDFInfo
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- CN207989022U CN207989022U CN201820449639.1U CN201820449639U CN207989022U CN 207989022 U CN207989022 U CN 207989022U CN 201820449639 U CN201820449639 U CN 201820449639U CN 207989022 U CN207989022 U CN 207989022U
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- borehole deformeter
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Abstract
The utility model provides a kind of detecting earth stress device based on the deformation measurement of gun drilling aperture.Described device includes high-pressure hydraulic pump, the drilling rod being connect with high-pressure hydraulic pump, borehole deformeter and the displacement meter being packed into inside borehole deformeter, borehole deformeter lower part is connected with data collecting instrument, borehole deformeter lower part is equipped with the three-dimensional electronic compass being connected with data collecting instrument, borehole deformeter lower part is connected with orienting device, and top is connected with the switching valve with pressure duct handoff functionality.Borehole deformeter is transferred to scheduled test position by drilling rod, start high-pressure hydraulic pump and pressure is applied to borehole wall by drilling rod, switching valve, borehole deformeter, borehole wall is set to generate certain deformation under pressure, the elasticity modulus of the deflection and rock mass that are generated by the lower rock mass of the pressure effect of borehole test position different direction calculates the rock mass stress state on drilling cross section.The utility model overcomes the limitation of traditionally stress test method, and the not limitation of tested person depth.
Description
Technical field
It is specifically a kind of based on the deformation measurement of gun drilling aperture the utility model is related to rock mechanics experiment technical field
Detecting earth stress device.
Background technology
Detecting earth stress method is because test basic principle is different and different demands, and have his own strong points trend.In reality, generate
The reason of crustal stress is sufficiently complex, to understand that all factors are still had any problem.But rock mass engineering project is built itself, work
The main source of crustal stress is rock mass dead weight and various tectonic movements in Cheng Yanti, and the work for surveying crustal stress has directly
It connects, important meaning.With the progress of measuring technology, the theory of testing and modern science and technology, in-situ stress mensuration method and skill in the world
Art has hundreds of.
It can substantially divide two major classes according to the different criteria for classifying, can be divided into absolute value measurement and relative value in content from measuring
It measures, and the direct method of measurement and the indirect method of measurement can be divided by measuring basic principle according to absolute value.Currently, more common exhausted
Mainly there are hydraulic fracturing, acoustic-emission, Borehole Breakout Data, over-coring stress relief method, strain restoring method to method for measuring stress
Deng.Wherein, preceding 3 kinds of methods belong to direct measuring method, and rear 2 kinds of methods belong to indirect measurement method.Relative stress survey method
Including pressure magnetic method, pressure-volume method, body strain method, component strain method and poor Strain Method etc..Wherein, the most commonly used method is that drilling is answered
Become and measure, it includes drilling component strain method and drilling bulk strain method.Currently, at home and abroad application is than wide：Stress
Overcoring method and hydraulic fracturing.And measuring accuracy problem in over-coring stress relief method has a scholar and expert carried out it is a series of
Research, but still there is such as test technology (the underwater technology for applying of strain gauge optimization of inside structure, hollow inclusion, crustal stress letter
Breath acquisition etc.) and the problems such as the theory of testing (acquisition of elastic constant)；Traditional hydraulic fracturing in three-dimension geosciences modeling
Theory still need to it is perfect, with suit engineering reality；There is an urgent need for research and development for high stress engineering area earth stress measuring method, to meet the mankind
Growth requirement of the engineering in earth's crust depth.
Since all there is detecting earth stress method respective advantage and limitation, traditional geostress survey analysis method to be difficult to
Meet the geostress survey under gun drilling, condition of high ground stress, this must improve test method and improve the theory of testing, Yi Jike
Take above-mentioned key technology difficulty.
Utility model content
The utility model proposes a kind of detecting earth stress devices based on the deformation measurement of gun drilling aperture, mainly solve
It is the key technical problem that the rock mass stress under gun drilling, condition of high ground stress measures, meets the ground under gun drilling, condition of high ground stress
Stress measurement.
In order to solve the above technical problems, the utility model adopts the following technical solution：
A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture, including high-pressure hydraulic pump and high-pressure hydraulic pump connect
Drilling rod, borehole deformeter and the displacement meter being packed into inside the borehole deformeter, the borehole deformeter lower part and the data connect
Acquisition Instrument is connected, and the borehole deformeter lower part is equipped with the three-dimensional electronic compass being connected with data collecting instrument, for measuring
The orientation of displacement meter in borehole deformeter, displacement of the data collecting instrument for synchronous acquisition record food preservation test pressure and displacement meter
Amount and orientation；The borehole deformeter top is connected by pressurization high-pressure hose and back pressure high-pressure hose with switching valve, switching valve
Being moved up and down by drilling rod makes to carry out being connected to switching between borehole deformeter and pressurization high-pressure hose and back pressure high-pressure hose, in turn
So that borehole deformeter switches between expansion and contraction.
Further, the pipeline switching shaft being connected with drilling rod is housed inside the switching valve, is set on the switching valve inner wall
There are sealing ring, sealing ring to obstruct pipeline switching shaft inner cavity pressurized fluid in the initial state and communicated with pressurization high-pressure hose, passes through pipe
Road switching shaft, sealing ring, which cooperate, completes pressure piping switching.
Further, the displacement meter inside the borehole deformeter, for measuring rock mass different direction under pressure
Deflection.
Further, threeway and pressure gauge are connected between the high-pressure hydraulic pump and drilling rod.
The utility model is to be based on gun drilling aperture deformation measurement rock mass stress state, will be under borehole deformeter by drilling rod
It puts to scheduled test position, starts high-pressure hydraulic pump and pressure is applied to borehole wall by drilling rod, switching valve, borehole deformeter
Power makes borehole wall generate certain deformation under pressure；Pass through the lower rock of the pressure effect of borehole test position different direction
The elasticity modulus of deflection and rock mass that body generates calculates the rock mass stress state on drilling cross section, overcomes traditional hydraulic pressure and causes
The method of splitting can not complete under gun drilling condition of high ground stress rock mass fracturing process and over-coring stress relief method release during because of core
Cake is difficult to obtain the limitation of complete core.
Description of the drawings
Fig. 1 is the structural schematic diagram of detecting earth stress device of the utility model based on the deformation measurement of gun drilling aperture；
Fig. 2 is the vertical view of detecting earth stress device of the utility model based on the deformation measurement of gun drilling aperture.
In figure：1-high-pressure hydraulic pump, 2-threeways, 3-pressure gauges, 4-silently, 5-drilling rods, 6-switching valves, 7-pressurization
High-pressure hose, 8-back pressure high-pressure hoses, 9-borehole deformeters, 10-bearing plates, 11-displacement meters, 12-oil cylinders, 13-numbers
According to Acquisition Instrument, 14-three-dimensional electronic compass, 61-pipeline switching shafts.
Specific implementation mode
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clearly and completely
Description.
With reference to figure 1, Fig. 2, the utility model provides a kind of detecting earth stress device based on the deformation measurement of gun drilling aperture,
Including high-pressure hydraulic pump 1, threeway 2, pressure gauge 3, silently 4, drilling rod 5, switching valve 6, pressurization high-pressure hose 7, back pressure high-pressure hose 8,
Borehole deformeter 9, bearing plate 10, displacement meter 11, oil cylinder 12, data collecting instrument 13, three-dimensional electronic compass 14.
9 lower part of the borehole deformeter is connected with data collecting instrument 13, and top passes through high-pressure hose 7 and the back pressure high pressure of pressurizeing
Hose 8 is connected with switching valve 6；9 inside of borehole deformeter includes displacement meter 11 and oil cylinder 12, and surface is equipped with bearing plate 10, pressure-bearing
Plate 10 is connected with displacement meter 11.
The switching valve 6 is connected by pipeline switching shaft 61 with drilling rod 5；Pipeline switching shaft 61 is located inside switching valve 6.
The drilling rod 5 is connected by silently 4, high-pressure hose 16 with pressure gauge 3, high-pressure hydraulic pump 1.
When original state, 61 inner cavity of pipeline switching shaft is connected to back pressure high-pressure hose 8.
In above-mentioned technical proposal, 6 inner wall of the switching valve is equipped with sealing ring 15, and sealing ring 15 disclosure satisfy that high pressure sealing
Test requirements document obstructs 61 inner cavity pressurized fluid of pipeline switching shaft and is communicated with pressurization high-pressure hose 7 in the initial state.
In above-mentioned technical proposal, is cooperated by pipeline switching shaft 61, sealing ring 15 and complete pressure piping switching.
The utility model is by measuring the rock mass deformation under the effect of gun drilling difference test position different direction certain pressure
Amount, then utilize rock mass elasticity modulus, by elastic theory formula calculate where position rock mass stress state, to for
Tunnel or underground chamber design provide basic data.
Using the utility model carry out the detecting earth stress method based on the deformation measurement of gun drilling aperture specifically include it is as follows
Step：
Step 1：First, borehole deformeter 9 is connected with drilling rod 5, the top of borehole deformeter 9 is equipped with can be into horizontal high voltage
The switching valve 6 of pipeline switching, lower part are equipped with data collecting instrument 13 and three-dimensional electronic compass 14；
Step 2：Borehole deformeter 9 is transferred to scheduled experiment position by drilling rod 5；
Step 3：The high-pressure hydraulic pump 1 of firing test compression system pressurizes, switching valve 6 by drilling rod 5 move up and down into
Row switching, switching valve 6, which first switches, makes pressure duct be connected to pressurization high-pressure hose 7, and water pressure is acted on by the high-pressure hose 7 that pressurizes
In borehole deformeter 9, at this point, borehole deformeter 9 drives the displacement meter 11 inside borehole deformeter 9 to act；Meanwhile data acquire
13 synchronous acquisition of instrument records the displacement and orientation of food preservation test pressure and displacement meter 11, after pressure to be tested adds to predetermined pressure
It unloads and is depressed into zero, switch transition valve 6 is transferred by drilling rod, makes back pressure high-pressure hose 8 phase of the pressure duct with borehole deformeter 9
Logical, the high-pressure hydraulic pump 1 for continuing firing test compression system pressurizes so that borehole deformeter 9 is fully contracted to initial position
And it is detached from hole wall；
Step 4：Test system is rotated to next different direction, repeats the experiment process of step 3.Testing orientation must not be small
In 3；
Step 5：By the drilling deformation displacement amount and orientation of institute's acquisition and recording in step 3, test is calculated using following formula
The crustal stress magnitude and orientation at position：
In formula：σx、σy、τxyX-axis respectively under earth coordinates, Y direction stress, the shear stress on the faces xy, E is rock mass
Elasticity modulus, μ be rock mass Poisson's ratio,WithRock under being acted on for test position different direction certain pressure
Body deforms, and d is boring aperture, and θ is the orientation residing for borehole deformeter, wherein θ1、θ2、θ3For three borehole deformeters and X-axis it
Between angle, the positive north orientation of earth coordinates, Y-axis is earth coordinates due west to right-handed system；
Step 6：Step 3 to be tested carry out 3 times or 3 times it is above after, can promote or transfer pilot system and try to another
Test position.By obtaining the data of same position different direction at least three, which can just be calculated using the formula in step 5
Try the stress state at position.
The utility model overcome traditional hydraulic fracturing can not complete under gun drilling condition of high ground stress rock mass fracturing process with
And because rock-core disking is difficult to obtain the limitation of complete core during over-coring stress relief method releasing.
The utility model method is suitable for all kinds of rock mass that Rock Under Uniaxial Compression saturation intensity is more than 30MPa.This specification is not made
The content of detailed description belongs to the prior art well known to professional and technical personnel in the field.
Claims (4)
1. a kind of detecting earth stress device based on the deformation measurement of gun drilling aperture, it is characterised in that：Including high-pressure hydraulic pump (1),
Drilling rod (5), borehole deformeter (9) and the displacement meter for being packed into borehole deformeter (9) inside being connect with high-pressure hydraulic pump (1)
(11), borehole deformeter (9) lower part is connected with data collecting instrument (13), borehole deformeter (9) lower part be equipped with
The three-dimensional electronic compass (14) that data collecting instrument (13) is connected, the side for measuring displacement meter (11) in borehole deformeter (9)
Position, data collecting instrument (13) is for synchronous acquisition record food preservation test pressure and the displacement and orientation of displacement meter (11)；It is described
Borehole deformeter (9) top is connected by pressurization high-pressure hose (7) and back pressure high-pressure hose (8) with switching valve (6), switching valve
(6) moved up and down by drilling rod (5) make borehole deformeter (9) and pressurization high-pressure hose (7) and back pressure high-pressure hose (8) between into
Row connection switching, so that borehole deformeter (9) switches between expansion and contraction.
2. the detecting earth stress device based on the deformation measurement of gun drilling aperture as described in claim 1, it is characterised in that：It is described
Inside switching valve (6) sealing ring is equipped with equipped with the pipeline switching shaft (61) being connected with drilling rod (5), switching valve (6) inner wall
(15), sealing ring (15) obstructs pipeline switching shaft (61) inner cavity pressurized fluid and is communicated with pressurization high-pressure hose (7) in the initial state,
It is cooperated by pipeline switching shaft (61), sealing ring (15) and completes pressure piping switching.
3. the detecting earth stress device based on the deformation measurement of gun drilling aperture as described in claim 1, it is characterised in that：It is described
The internal displacement meter (11) of borehole deformeter (9), the deflection for measuring rock mass different direction under pressure.
4. the detecting earth stress device based on the deformation measurement of gun drilling aperture as described in claim 1, it is characterised in that：It is described
Threeway (2) and pressure gauge (3) are connected between high-pressure hydraulic pump (1) and drilling rod (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820449639.1U CN207989022U (en) | 2018-04-02 | 2018-04-02 | A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture |
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| CN201820449639.1U CN207989022U (en) | 2018-04-02 | 2018-04-02 | A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301828A (en) * | 2018-04-02 | 2018-07-20 | 长江水利委员会长江科学院 | A kind of detecting earth stress device and method based on the deformation measurement of gun drilling aperture |
| 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 |
| CN110057340A (en) * | 2019-04-11 | 2019-07-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for solving problem of small effective aperture of vertical line drilling |
| CN110130865A (en) * | 2019-06-06 | 2019-08-16 | 中国地质科学院地质力学研究所 | A kind of push-and-pull switch component that can eliminate system compliance |
| CN110514342A (en) * | 2019-09-18 | 2019-11-29 | 长江水利委员会长江科学院 | The quickly measuring device and method of measurement soft rock strata crustal stress |
-
2018
- 2018-04-02 CN CN201820449639.1U patent/CN207989022U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301828A (en) * | 2018-04-02 | 2018-07-20 | 长江水利委员会长江科学院 | A kind of detecting earth stress device and method based on the deformation measurement of gun drilling aperture |
| CN108301828B (en) * | 2018-04-02 | 2023-08-11 | 长江水利委员会长江科学院 | Ground stress testing device and method based on deep drilling aperture deformation measurement |
| 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 |
| CN110057340A (en) * | 2019-04-11 | 2019-07-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for solving problem of small effective aperture of vertical line drilling |
| CN110057340B (en) * | 2019-04-11 | 2020-09-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for solving problem of small effective aperture of vertical line drilling |
| CN110130865A (en) * | 2019-06-06 | 2019-08-16 | 中国地质科学院地质力学研究所 | A kind of push-and-pull switch component that can eliminate system compliance |
| CN110130865B (en) * | 2019-06-06 | 2023-12-29 | 中国地质科学院地质力学研究所 | Push-pull switch assembly capable of eliminating system flexibility |
| CN110514342A (en) * | 2019-09-18 | 2019-11-29 | 长江水利委员会长江科学院 | The quickly measuring device and method of measurement soft rock strata crustal stress |
| CN110514342B (en) * | 2019-09-18 | 2024-04-26 | 长江水利委员会长江科学院 | Measuring device and method for rapidly measuring ground stress of soft rock stratum |
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