CN107643139A - Exploration engineering soft rock detecting earth stress device - Google Patents
Exploration engineering soft rock detecting earth stress device Download PDFInfo
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- CN107643139A CN107643139A CN201710808143.9A CN201710808143A CN107643139A CN 107643139 A CN107643139 A CN 107643139A CN 201710808143 A CN201710808143 A CN 201710808143A CN 107643139 A CN107643139 A CN 107643139A
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- 239000011435 rock Substances 0.000 title claims abstract description 42
- 238000005553 drilling Methods 0.000 claims abstract description 74
- 238000007569 slipcasting Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000001953 sensory effect Effects 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims description 58
- 239000011083 cement mortar Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009774 resonance method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A kind of exploration engineering soft rock detecting earth stress device, including：Drilling machine, it is used to form drilling in country rock body；Stress sensing component, it includes a pair of triaxial pressures sensing box being disposed adjacent, for being arranged in drilling, the crustal stress in detection drilling；Push rod, it is used for the designated depth being pushed to stress sensing component in drilling, angle sensing equipment is set on the push rod；Slip casting bar, it is used for the slip casting into drilling so that drilling be filled up；The reading of sensor based on stress sensing component, the crustal stress of identified sign sensory package, so as to establish soft rock regional space mechanical model.
Description
Technical field
The present invention relates to ground Reconnaissance Survey technical field, has and is related to a kind of ground exploration engineering soft rock detecting earth stress
Device.
Background technology
The stability of complex condition underground chamber and its country rock always attracts attention, especially high-ground stress, underground water
Development and more broken country rock, deformation failure is very serious and the duration is grown, while it is upper and spatially to show the time again
Many characteristics such as uneven, asymmetric, excavation, supporting and maintenance difficulties are big.
Crustal stress is basic source caused by underground engineering wall rock pressure.Action of Gravity Field and tectonic movement are to cause crustal stress
The main reason for, wherein being influenceed especially with formation of the tectonic movement of horizontal direction on crustal stress and its feature maximum.Form construction
The reason for stress field, is complicated, therefore distributed pole of the crustal stress in space is uneven, in Chinese stress field regularity of distribution statistical
Found in analysis, the stress field regularity of distribution in small range region is for instructing crustal stress actual measurement and engineering construction more meaningful.
Due to the complexity of tectonic stress field, crustal stress field measurement is the most good hand of accurate acquisition initial field stress at present
Section, but because field condition and the limitation of measuring technology, test result often there is very big discreteness even can produce mistake
Data.Thus, the region crustal stress regularity of distribution obtained using statistics differentiates that the reasonability of test result is particularly important.Grind
Study carefully the method for the initial in-site stress field that whole works scope is expanded out based on limited field measurement information, there is important practicality
Value.
At present, traditional detecting earth stress method such as hydraulic fracturing, atomic magnetism resonance method, pressure-volume method etc. is more difficult suitable
Soft rock engineering at great depth stability analysis is answered to draw the needs with security monitoring, such underground engineering is needed more efficiently crustal stress badly and surveyed
Method for testing.In the prior art, Wuhan Inst. of Rock and Soil Mechanics, Chinese Academy of Sciences proposes a kind of in a pair three of wall rock drill-hole installation
To the mode of pressure sensing box, obtain drawing the crustal stress at test point, so that it is determined that soft rock crustal stress is distributed, carry out stability
Analysis.But due to triaxial pressure sensing box in the provisioning process, it may occur however that relative displacement causes to influence the accurate of measurement
Property；Meanwhile need to carry out complete opening slip casting to drilling in fixed triaxial pressure sensing box.
In order to solve the above problems, Wuhan University is in 201310496898.1 patent of invention, it is proposed that one kind uses
The soft rock multi-measuring point detecting earth stress method of post is sensed, by the way that triaxial pressure sensing box is fixed in sensing post in advance, will be passed
Sense post is arranged at the mode detected in drilling, avoids triaxial pressure sensing box and relative displacement occurs, while reduce grouting amount.
But due in its technical scheme, sensing post is outer cementing by cement mortar in drilling, its seif-citing rate with drilling in enclosed
Cementing condition is different under rock pressure power, causes to have an impact for measurement result；Simultaneously as sensing post is easily in setting up procedure
Middle generation torsion, the push rod for mobile sensor post are needed to set angle measurement unit, and each post that senses is required for when fixing
It is determined using angle measurement unit for sensing the final angle of post.
The content of the invention
Improvement of the present invention as 201310496898.1 patent of invention, there is provided a kind of ground exploration engineering soft rock
Stress test device, it can solve the problem that the problems of its.
As one aspect of the present invention, there is provided a kind of exploration engineering soft rock detecting earth stress device, including：Drilling machine,
It is used to form drilling in country rock of soft rock roadway body；Stress sensing component, its a pair of triaxial pressure for including being disposed adjacent pass
Feel box, for being arranged in drilling, the crustal stress in detection drilling；Push rod, it is used to stress sensing component being pushed to drilling
Interior designated depth；Slip casting bar, it is used for the slip casting into drilling so that drilling be filled up；The stress sensing component includes cement
Arch cement base prepared by mortar, its lower surface is arch cambered surface, and upper surface is plane；The triaxial pressure senses box by water
Cement mortar is fixed in arch cement base, and part of the triaxial pressure sensor box in the arch cement base is taper
Body；Minimum point of three detection faces of the triaxial pressure sensing box in level height is upper higher than the arch cement base
Surface, so that three detection faces are located on arch cement base.
Preferably, a stress sensing component is often set up in drilling, the slip casting bar is to the arch cement base
On slip casting so that the triaxial pressure sensing box three detection faces on slip casting in the case of by soft rock pressure coagulate
Gu.
Preferably, the pair of triaxial pressure sensing box any two working face normal is misaligned.
Preferably, the minimum point of the triaxial pressure sensing box level height is located at the axis section of the arch cement base
On face.
Preferably, the stress sensing component also includes：Cylindrical type front end, it is passed by cement production systD positioned at the triaxial pressure
Before sense box；Cylindrical type rear end, it is by cement production systD, after the triaxial pressure senses box；The cylindrical type rear end
Diameter is smaller 0.5~1cm than bore diameter.
Preferably, the lower surface of the arch cement base sets string holes, for accommodating data wire.
As another aspect of the present invention, there is provided a kind of exploration engineering soft rock detecting earth stress device, including：Drilling
Machine, it is used to form drilling in country rock of soft rock roadway body；Stress sensing component, it includes a pair of triaxial pressures being disposed adjacent
Box is sensed, for being arranged in drilling, the crustal stress in detection drilling；Push rod, it is used to stress sensing component being pushed to brill
Designated depth in hole；Slip casting bar, it is used for the slip casting into drilling so that drilling be filled up；Some standard cement posts, for filling out
The space filled between stress sensing component, the standard cement post are made by cement mortar, section and drilling area equation, tool
There is different length；The stress sensing component includes arch cement base prepared by cement mortar, and its lower surface is arcuate arc
Face, upper surface are plane；The triaxial pressure sensing box is fixed in arch cement base by cement mortar, triaxial pressure sensing
Part of the device box in the arch cement base is bullet；Three detection faces of the triaxial pressure sensing box are horizontal high
Minimum point on degree is higher than the upper surface of the arch cement base so that three detection faces be located at arch cement base it
On；The push rod is not provided with angle measurement unit.
Preferably, the bottom of described standard cement post sets string holes.
Preferably, trip is not provided with positioned at the front end for the innermost stress sensing component that drills, rear end sets neck；Not position
In innermost stress sensing component and the standard cement post front end setting trip of drilling, rear end sets corresponding neck；It is described
The cross sectional shape of neck and trip is trapezoidal.
Preferably, the push rod front end is provided with trip corresponding with the neck, for by stress sensing component and
Standard cement post is pushed to the specified location in drilling.
Preferably, in drilling set stress sensing component when, according to stress sensing component adjacent on depth direction it
Between distance, it is determined that the length and number of the standard cement post being arranged between adjacent stress sensing component, make adjacent in drilling
Stress sensing component between there is no space；Between wherein adjacent stress sensing component the trip of bosom standard cement post with
Positioned at the neck engagement of the stress sensing component of its front end, the neck of most shallow place's standard cement post passes with the stress positioned at its rear end
Feel the trip engagement of component；In drilling after setting completed all stress sensing components, according to the stress positioned at drilling rearmost end
The angle of sensory package, it is determined that drilling in the stress sensing component angle.
Brief description of the drawings
Fig. 1 is the stress sensing component structure diagram of the embodiment of the present invention.
Fig. 2 is the stress sensing component and standard cement post schematic diagram of the preferred embodiment of the present invention.
Embodiment
In order to illustrate more clearly of technical scheme, embodiment will be used simply to be situated between the present invention below
Continue, it should be apparent that, in describing below is only one embodiment of the present of invention, is come for those of ordinary skill in the art
Say, without having to pay creative labor, other technical schemes can also be obtained according to these embodiments, fallen within
Disclosure of the invention scope.
The exploration engineering soft rock detecting earth stress device of the embodiment of the present invention, including drilling machine, stress sensing component, push rod
And slip casting bar.Wherein, drilling machine is used for according to exploration needs, and multiple specified locations in country rock body, which are formed, formulates depth
Drilling.
Stress sensing component, for being arranged in drilling, the crustal stress in detection drilling.Different depth can in one drilling
To set multiple stress sensing components.
Push rod, for the designated depth being pushed to stress sensing component in drilling.Slip casting bar, it is used to note into drilling
Slurry is so that drilling be filled up.Angle sensing equipment can be set on push rod, and so as to the angle change according to push rod, can determine should
The final angle of power sensory package.
The structure of stress sensing component is referring to Fig. 1, including arch cement base 10 prepared by cement mortar, cylindrical type front end
20, cylindrical type rear end 30, the triaxial pressure sensing box 40 and triaxial pressure being disposed adjacent senses box 50.
Triaxial pressure is sensed into box 40 outside drilling and triaxial pressure sensing box 50 is arranged in mold for cement mortar, shape
Into stress sensing component.Wherein, any two working face normal of triaxial pressure sensing box 40 and 50 is misaligned.It can use
Triaxial pressure well known in the prior art senses box.
The lower surface 11 of arch cement base 10 is arch cambered surface, and upper surface 12 is plane.Can be in arch cement base
10 lower end of lower surface 11 sets string holes, the setting for sensor data cable.Triaxial pressure senses box 40 and triaxial pressure
Sensing box 50 is fixed in arch cement base 10 by cement mortar.Wherein, triaxial pressure sensing box 40 and triaxial pressure
The setting for sensing box 50 is as follows：Triaxial pressure sensing box 40 and triaxial pressure is set to sense box 50 in arch cement base 10
Part is bullet；Three detection faces 401,402,403 of triaxial pressure sensing box 40 and the three of triaxial pressure sensing box 50
Minimum point in the level height of individual detection faces 501,502,503 is higher than the upper surface 12 of arch cement base 10, so that three
Three detection faces 501,502 of box 50 are sensed to three detection faces 401,402,403 and triaxial pressure of pressure sensing box 40,
503 on arch cement base 10.Space on arch cement base 10 is positioned over brill by stress sensing component
Behind the position of hole designated depth, cement mortar is injected into it in slip casting bar, so that triaxial pressure sensing box 40 and 50
Mortar above detection faces solidifies in the case of by soft rock pressure, while fills between stress sensing component and country rock body
Space.
Cylindrical type front end 20 is by cement production systD, before triaxial pressure sensing box 40 and 50；Cylindrical type rear end its by
Cement production systD, after triaxial pressure senses box 40 and 50；The diameter of cylindrical type front end 40 and cylindrical type rear end 50 ratio
Small 0.5~the 1cm of bore diameter.
By the setting of the soft rock detecting earth stress device of the above embodiment of the present invention, triaxial pressure in stress sensing component
Sense in the cement mortar drilling above the sensitive face of box by cementing under pressure from surrounding rock, so as to be produced for measurement result
Influence；Simultaneously as stress sensing component is in the outer grouting amount for being formed, can also reducing drilling of drilling.
In above-described embodiment, because stress sensing component easily produces torsion in the provisioning process, post is sensed for promoting
Push rod need set angle measurement unit, for it is each sensing post final angle be determined；Simultaneously as in adjacent brill
Space between the stress sensing component of hole needs slip casting, and may be for the sensor number in drilling in cement mortar process of setting
Had an impact according to line, cause it to damage and measurement can not be realized.
The exploration engineering soft rock detecting earth stress device of the preferred embodiment of the present invention, including drilling machine, stress sensing component,
Some standard cement posts, push rod and slip casting bar.Wherein, drilling machine is used for according to exploration needs, multiple fingers in country rock body
The drilling to be formed and formulate depth is put in positioning.
Stress sensing component, for being arranged in drilling, the crustal stress in detection drilling.Different depth can in one drilling
To set multiple stress sensing components.
The structure of stress sensing component is referring to Fig. 2, unlike above-mentioned first embodiment, positioned at innermost answer that drill
The front end of power sensory package 100 is not provided with trip, and rear end sets neck 110；Not positioned at the innermost stress sensing component that drills
200 front end sets trip 220, and rear end sets corresponding neck 210.
Standard cement post includes the standard cement post of more different lengths, and it is made by cement mortar, section and drilling
Area equation, there is different length.The bottom of standard cement post sets string holes, the setting for data wire.Standard cement post
Front end sets trip, and rear end sets corresponding neck.
Standard cement post is used to fill space between stress sensing component, can according to drilling internal stress sensory package it
Between distance, it is determined that being arranged at the specification of standard cement post between stress sensing component.Such as in Fig. 2, can be in stress sensing
Between component 100 and stress sensing component 200, the standard cement post 300 and 400 of different length is set.
Push rod, for the designated depth being pushed to stress sensing component in drilling.Slip casting bar, it is used to note into drilling
Slurry is so that drilling be filled up.Wherein, angle sensing equipment is not provided with push rod.
The soft rock detecting earth stress device of above-described embodiment when being tested, by drilling machine country rock specified location
Drilling is formed, multiple stress sensing components are formed outside drilling, will be specified deeply in the push-in drilling of stress sensing component by push rod
Degree, by superjacent air space slip casting of the slip casting bar to stress sensing component arch cement base, so that the inspection of stress sensing component
Mortar on survey face solidifies in the case of by soft rock pressure；According to the distance between stress sensing component, it is determined that being arranged at
The length and number of standard cement post between stress sensing component, by the way that standard cement post is pushed into turn hole, wherein standard water
Between mud post, engaged between standard cement post and stress sensing component by trip and neck；It is pushed into successively into drilling
Stress sensing component and standard cement post, until setting completed all stress sensing components in drilling；According to positioned at drilling most
The angle of the stress sensing component of rear end, it is determined that drilling in the stress sensing component angle, due to each element in drilling
Engagement is set, and according to trip and the position angle of neck, that is, can determine the angle of each stress sensing component；Based on stress
The reading of the sensor of sensory package, the crustal stress of identified sign sensory package, so as to establish soft rock regional space mechanical model.
Pass through the above-mentioned preferred embodiment of the present invention, it is not necessary to record the angle of each stress sensing device assembly, pass through brill
The angle of the stress sensing device assembly of hole rearmost end is that can determine that the angle of all strain gauges；Avoid data wire simultaneously
Damage.
In all documents for referring to of the present invention all incorporated by reference in this application, it is individually recited just as each document
As with reference to such.The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Specific features, structure, material or feature described in the present invention can close in any one or more embodiments or example
Suitable mode combines.In addition, in the case of not conflicting, those skilled in the art can be by described in this specification
Different embodiments or example and the feature of different embodiments or example are combined and combined.It is all the present invention it is spiritual and former
Any modification, equivalent substitution and improvements made within then etc., are all contained in protection scope of the present invention.
Claims (6)
1. a kind of exploration engineering soft rock detecting earth stress device, including：Drilling machine, it is used to form drilling in country rock body；Should
Power sensory package, it includes a pair of triaxial pressures sensing box being disposed adjacent, for being arranged in drilling, the ground in detection drilling
Stress；Push rod, it is used for the designated depth being pushed to stress sensing component in drilling, sets angle sensor to fill on the push rod
Put；Slip casting bar, it is used for the slip casting into drilling so that drilling be filled up；It is characterized in that：The stress sensing component includes water
Arch cement base prepared by cement mortar, its lower surface is arch cambered surface, and upper surface is plane；The triaxial pressure senses box quilt
Cement mortar is fixed in arch cement base, and it is taper that triaxial pressure, which senses part of the box in the arch cement base,
Body；Minimum point of three detection faces of the triaxial pressure sensing box in level height is upper higher than the arch cement base
Surface, so that three detection faces are located on arch cement base.
2. exploration engineering soft rock detecting earth stress device according to claim 1, it is characterised in that：The slip casting bar is to institute
Slip casting on arch cement base is stated, so that the slip casting in three detection faces of triaxial pressure sensing box is by soft rock
Solidified in the case of pressure.
3. exploration engineering soft rock detecting earth stress device according to claim 2, it is characterised in that：The pair of three-dimensional pressure
Power sensing box any two working face normal is misaligned.
4. exploration engineering soft rock detecting earth stress device according to claim 3, it is characterised in that：The triaxial pressure passes
The minimum point of sense box level height is located on the middle shaft section of the arch cement base.
5. the exploration engineering soft rock detecting earth stress device according to claim 3-4, it is characterised in that：The stress sensing
Component also includes：Cylindrical type front end, it is by cement production systD, before triaxial pressure sensing box；Cylindrical type rear end, its by
Cement production systD, after the triaxial pressure senses box；The diameter of the cylindrical type rear end is smaller 0.5~1cm than bore diameter.
6. the exploration engineering detecting earth stress device according to claim 3-5, it is characterised in that：The arch cement base
Lower surface set string holes, for accommodating data wire.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710808143.9A CN107643139B (en) | 2017-09-09 | 2017-09-09 | Exploration engineering soft rock ground stress testing device |
| CN201911089623.XA CN110608835B (en) | 2017-09-09 | 2017-09-09 | Soft rock ground stress testing device and soft rock ground stress testing method for geotechnical exploration engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710808143.9A CN107643139B (en) | 2017-09-09 | 2017-09-09 | Exploration engineering soft rock ground stress testing device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911089623.XA Division CN110608835B (en) | 2017-09-09 | 2017-09-09 | Soft rock ground stress testing device and soft rock ground stress testing method for geotechnical exploration engineering |
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| Publication Number | Publication Date |
|---|---|
| CN107643139A true CN107643139A (en) | 2018-01-30 |
| CN107643139B CN107643139B (en) | 2020-09-18 |
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| CN201911089623.XA Expired - Fee Related CN110608835B (en) | 2017-09-09 | 2017-09-09 | Soft rock ground stress testing device and soft rock ground stress testing method for geotechnical exploration engineering |
| CN201710808143.9A Active CN107643139B (en) | 2017-09-09 | 2017-09-09 | Exploration engineering soft rock ground stress testing device |
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| CN201911089623.XA Expired - Fee Related CN110608835B (en) | 2017-09-09 | 2017-09-09 | Soft rock ground stress testing device and soft rock ground stress testing method for geotechnical exploration engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855037A (en) * | 2020-08-06 | 2020-10-30 | 重庆大学 | Ground stress measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033326B (en) * | 2021-11-02 | 2023-10-31 | 中国矿业大学 | Push rod mounting and dismounting device and method for ground stress test |
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| CN105606288A (en) * | 2016-03-21 | 2016-05-25 | 北京科技大学 | Experimental assessment method for high temperature alloy turbine blade service stress |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855037A (en) * | 2020-08-06 | 2020-10-30 | 重庆大学 | Ground stress measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110608835B (en) | 2021-03-09 |
| CN110608835A (en) | 2019-12-24 |
| CN107643139B (en) | 2020-09-18 |
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