CN108983307A - Geotechnical engineering wall-rock crack detection method - Google Patents
Geotechnical engineering wall-rock crack detection method Download PDFInfo
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- CN108983307A CN108983307A CN201810849849.4A CN201810849849A CN108983307A CN 108983307 A CN108983307 A CN 108983307A CN 201810849849 A CN201810849849 A CN 201810849849A CN 108983307 A CN108983307 A CN 108983307A
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- 239000011435 rock Substances 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 230000001939 inductive effect Effects 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims description 32
- 125000006850 spacer group Chemical group 0.000 claims description 31
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of geotechnical engineering wall-rock crack detection method, exploration hole and medium injection hole are set in rock mass, the distribution and shape trend in the crack in rock mass are determined by the inductive signal and time of crack sensor, the cranny development degree of country rock during constructing and run so as to better analysis project, evaluation is made for the stability of engineering, safety, guarantees the safety and quality of engineering.
Description
Technical field
The present invention relates to a kind of geotechnical investigation fields, more particularly, to a kind of geotechnical engineering wall-rock crack detection side
Method.
Background technique
In nature and practical engineering application, there is the cracks of different geometries inside rock mass, and most of split
There is the filling substances of different physical properties, geometric dimension in gap, and filling medium is by slacking, construction under normal circumstances
Short textures, morphosis are irregular, porosity is big, are easy to produce change for dust, sandy soil that effect and groundwater effect are formed etc.
The low-intensity medium of shape.
Rock mass used is generally the complicated rock mass containing crack in engineering construction, often contains a large amount of heterogeneitys in crack
Filling substance, in engineering after cavern excavation, periphery would generally generate many filling fractures, the presence of filling fracture, not only
Keep the anisotropy of country rock very significant, while causing the discontinuity of country rock, makes the strength reduction of country rock, deformation failure is more
Add complexity, directly affects the stabilization of surrounding rock of chamber.
Filling fracture causes mechanics to it under the action of the various complex loads such as fluid neuron network and confining pressure, and chemistry becomes
The destruction of the various aspects such as shape and fracture causes the unstable and geological disaster of engineering too numerous to enumerate, especially in mine, water
The safety of the engineerings such as benefit, bridge, massif tunnel and stable aspect, the deformation of filling fracture are even more that very important shadow is generated to it
It rings.Therefore the cranny development degree of country rock is detected during constructing and run, analysis project hazard management measure effect, from
And evaluation is made for the stability of engineering, safety, it can guarantee safety and quality, make reasonable decision in time, avoid
The generation of geological disaster.
In the prior art, University Of Science and Technology Of Shandong proposes a kind of rock cranny in the patent of invention of CN201610035077.1
Detection system and method, by the way that crack sensor is arranged in rock mass, the induction medium injected by the detection of crack sensor,
So that it is determined that the crack position in rock mass, realizes the positioning of rock cranny.However, only can determine in exploration hole in the invention
Crack positioning, the trend in the crack between adjacent exploration hole can not be determined.
Summary of the invention
The present invention provides a kind of geotechnical engineering wall-rock crack detection method, can not only determine the position in crack, additionally it is possible to
Determine the trend in crack between different location.
As one aspect of the present invention, a kind of geotechnical engineering wall-rock crack detection method is provided, is included the following steps:
(1) several medium injection holes and exploration hole are set in rock mass；(2) crack sensor is set in exploration hole；(3) by the
One medium injection pipe injects induction medium into rock mass, detects induction medium by crack sensor, determining has inductive signal
Crack sensor coordinate, so that it is determined that the position in exploration hole where crack；(4) crack sensor is taken out, detection is extracted
Induction medium in hole and medium injection hole；(5) position using in exploration hole where crack is as group, for each of the group
Coordinate successively proceeds as follows from high to low: the coordinate up and down of the coordinate a) is blocked by second medium injection pipe；B) at this
Crack sensor is set in the adjacent exploration hole of exploration hole；C) induction is injected to the coordinate by second medium input pipe to be situated between
Matter；D) it determines in the exploration hole adjacent with the exploration hole, depth is greater than in the crack coordinate of the coordinate senses induction letter earliest
Number crack sensor coordinate；E) determine that this senses that the coordinate of the crack sensor of inductive signal is under the coordinate earliest
Position coordinate；F) second medium injection pipe and crack sensor are taken out, the induction medium in exploration hole is extracted；(6) for all
Exploration hole carry out step (5) operation, so that it is determined that the next coordinate of each crack coordinate；(7) according to crack coordinate and
The next coordinate determines different crevasse curve groups；(8) each crevasse curve group is connected using smoothed curve, determines wall-rock crack
Distribution and trend.
Preferably, the first medium injection pipe is hollow tube.
Preferably, the crack sensor includes a hollow stem, is had along the axial direction arranged for interval of hollow stem more
A spacer being connected to hollow stem, and the medium being fixed in a hollow stem induction member is arranged between every two spacer
Part, each medium sensing element pass through independent connection and are connected with information acquisition device, realize the positioning of crevice space information.
Preferably, by being filled with high pressure gas or liquid, realization spacer lateral expansion or contraction into hollow lever, from
And form the enclosure space in spacer.
Preferably, the second medium injection pipe includes: the first hollow tube, first hollow bottom of the tube setting interval
Device；Second hollow tube, second hollow tube can inject induction medium into the space of spacer formation.
Preferably, the induction medium is water.
Detailed description of the invention
Fig. 1 is the flow chart of the geotechnical engineering wall-rock crack method of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of second medium injection pipe in the embodiment of the present invention.
Specific implementation method
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
The geotechnical engineering wall-rock crack detection method of the embodiment of the present invention includes the following steps: (1) in rock mass referring to Fig. 1
It is middle that several medium injection holes and exploration hole are set；(2) crack sensor will be set in exploration hole；(3) it is infused by first medium
Enter pipe and inject induction medium into rock mass from medium injection hole, induction medium is detected by crack sensor, determining has induction
The coordinate of the crack sensor of signal, so that it is determined that the position in exploration hole where crack；(4) crack sensor is taken out, is extracted
Induction medium in exploration hole and medium injection hole；(5) position using in exploration hole where crack is as group, for the group
Each coordinate successively proceeds as follows from high to low: the coordinate up and down of the coordinate a) is blocked by second medium injection pipe；B)
Crack sensor is set in the adjacent exploration hole of the exploration hole；C) it is injected and is incuded to the coordinate by second medium input pipe
Medium；D) it determines in the exploration hole adjacent with the exploration hole, depth is greater than in the crack coordinate of the coordinate senses induction earliest
The coordinate of the crack sensor of signal；E) determine that this senses that the coordinate of the crack sensor of inductive signal is the coordinate earliest
The next coordinate；F) second medium injection pipe and crack sensor are taken out, the induction medium in exploration hole is extracted；(6) for institute
Some exploration holes carry out the operation of step (5), so that it is determined that the next coordinate of each crack coordinate；(7) according to crack coordinate with
And the next coordinate, determine different crevasse curve groups；(8) each crevasse curve group is connected using smoothed curve, determines that country rock is split
The distribution and trend of gap.
In step (1), after according to detection needing that medium injection hole and exploration hole is arranged on rock mass according to a fixed step size
Borehole cleaning, wherein the depth of exploration hole is greater than the depth of medium injection hole.
In step (2), crack sensor is set in exploration hole, the prior art can be used for example
The crack sensor of CN201610035077.1 comprising hollow stem, spacer and medium sensing element.It is spaced in hollow stem
Several spacers are disposed with, each spacer is connected by hollow stem, when inputting high-pressure medium to spacer, spacer is lateral
Expansion, and be in close contact with the hole wall of exploration hole, to form enclosure space between adjacent spacer and hole wall；When passing through
After hollow stem removes the high-pressure medium in spacer, the closing of contact interval device.High-pressure medium can be gas or liquid.
It is provided with medium sensing element between every two spacer, medium sensing element is fixed on each medium induction in hollow stem
Element passes through independent connection and is connected with information acquisition device, when medium sensing element detects induction medium, indicates it
There are cracks for corresponding position.
In step (3), sealing of hole plug is set in the aperture of medium injection hole, by first medium injection pipe from medium injection hole
Induction medium is injected into rock mass, first medium injection pipe is hollow tube, and induction medium can be water.Then, pass through exploration hole
In crack sensor detect induction medium, determine have inductive signal crack sensor coordinate, so that it is determined that exploration hole
Position where middle crack.
In step (4), the high-pressure medium in spacer is extracted by hollow stem and is extracted, crack sensor is then taken out；
Then the induction medium in emptying exploration hole and medium injection hole is extracted.
In step (5), the crack in exploration hole is organized into groups, using when the position where crack in exploration hole as
Group successively proceeds as follows each coordinate of the group from high to low: a) blocking the coordinate by second medium injection pipe
Coordinate up and down；Referring to fig. 2, second medium injection pipe 10 includes one group of spacer group 11, in the first hollow tube 12 and second
Blank pipe 13；Wherein spacer group 11 is set to the first hollow tube bottom end, in the distance and crack sensor of upper and lower spacer
Spacer is equidistant；First hollow tube 12 connects each spacer in spacer group 11, can be to spacer group 11
High-pressure medium is inputted in each spacer.Second hollow tube, 13 upper end opening, bottom closing, pass through spacer group 11 upper
Every device, the side wall that tube body is located at spacer group upper and lower side height is provided with opening 131, for inputting induction medium.By second
Medium injection pipe 10 is set in exploration hole, is located at crack coordinate among spacer group 11, passes through the first hollow tube 12 to
High-pressure medium, 11 lateral expansion of spacer group are injected every device group 11, and is in close contact with the hole wall of exploration hole, crack coordinate is made
In the enclosure space that spacer group 11 is formed.Preferably, first hollow tube and the second hollow tube are telescopic tube,
It is that crack coordinate is located at 11 center of spacer group so as to adjust its depth for rising up into exploration hole.B) in the phase of the exploration hole
Crack sensor is set in adjacent exploration hole, it can be using the identical set-up mode with step (2).C) to second medium input pipe
The second hollow tube 13 in 10 injects induction medium, and induction medium passes through the opening input detector group 11 of the second hollow tube 13
In enclosure space, then flowed by the crack of enclosure space.D) it is adjacent to monitor the exploration hole adjacent with the exploration hole
In exploration hole, depth is greater than the information of the crack sensor of the crack coordinate, determines the crack sensor of earliest inductive signal
Coordinate.E) coordinate that this is sensed to the crack sensor of inductive signal earliest is the next coordinate of the crack coordinate.F) pass through
First hollow tube 12 extracts the high-pressure medium in spacer group 11, takes out second medium injection pipe 10 and crack sensor,
Extract the induction medium in exploration hole.
In step (6), the operation of step (5) is carried out for the fracture set in each exploration hole, so that it is determined that each crack
The next coordinate of coordinate.In step (7), according to crack coordinate and bottom and the next coordinate, different crevasse curves is determined
Group；Such as the bottom coordinate a encloses and is designated as a ', the next coordinate of a ' is a ' ', and the next coordinate of a ' ' is a ' ' ', it is determined that its crack is bent
Line group is (a, a ', a ' ', a ' ' ').In step (8), the coordinate of each fracture set is connected using smoothed curve, so that it is determined that country rock
The distribution in crack and the trend in crack.
Through the above embodiments of the present invention, the distribution and trend in the crack in rock mass be can determine, so as to more
The cranny development degree of country rock, makes evaluation for the stability of engineering, safety during good analysis construction and operation, protects
Demonstrate,prove the safety and quality of engineering.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of geotechnical engineering wall-rock crack detection method includes the following steps: that several medium injection holes are arranged in (1) in rock mass
And exploration hole；(2) crack sensor is set in exploration hole；(3) induction is injected into rock mass by first medium injection pipe
Medium detects induction medium by crack sensor, and determining has the coordinate of the crack sensor of inductive signal, so that it is determined that visiting
Position in gaging hole where crack；(4) crack sensor is taken out, the induction medium in exploration hole and medium injection hole is extracted；
(5) position using in exploration hole where crack successively proceeds as follows each coordinate of the group as group from high to low:
A) coordinate up and down of the coordinate is blocked by second medium injection pipe；B) crack is set in the adjacent exploration hole of the exploration hole
Sensor；C) induction medium is injected to the coordinate by second medium input pipe；D) exploration hole adjacent with the exploration hole is determined
In, depth is greater than the coordinate for sensing the crack sensor of inductive signal in the crack coordinate of the coordinate earliest；E) determine this most
The coordinate for early sensing the crack sensor of inductive signal is the next coordinate of the coordinate；F) take out second medium injection pipe and
Crack sensor extracts the induction medium in exploration hole；(6) operation that step (5) are carried out for all exploration holes, thus really
The next coordinate of fixed each crack coordinate；(7) according to crack coordinate and the next coordinate, different crevasse curve groups is determined；(8)
Each crevasse curve group is connected, determines the distribution and trend of wall-rock crack.
2. geotechnical engineering wall-rock crack detection method according to claim 1, it is characterised in that: in step (3), described
One medium injection pipe is hollow tube.
3. geotechnical engineering wall-rock crack detection method according to claim 1, it is characterised in that: in the step (3), lead to
It crosses and is filled with high-pressure medium into hollow lever, realize spacer lateral expansion or contraction, so that the closing formed in spacer is empty
Between.
4. the geotechnical engineering wall-rock crack detection method according to claim, it is characterised in that: used in the step (8)
Smoothed curve connects each crevasse curve group.
5. geotechnical engineering wall-rock crack detection method according to claim 1, it is characterised in that: the crack sensor packet
A hollow stem is included, has multiple spacers being connected to hollow stem, and every two along the axial direction arranged for interval of hollow stem
Arrange that a medium sensing element being fixed in hollow stem, each medium sensing element pass through independent logical between spacer
News line is connected with information acquisition device, realizes the positioning of crevice space information.
6. geotechnical engineering wall-rock crack detection method according to claim 1, it is characterised in that: the high-pressure medium is liquid
Body or gas.
7. geotechnical engineering wall-rock crack detection method according to claim 1, it is characterised in that: the induction medium is
Water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849849.4A CN108983307B (en) | 2018-07-28 | 2018-07-28 | Geotechnical engineering surrounding rock crack detection method |
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| CN201810849849.4A CN108983307B (en) | 2018-07-28 | 2018-07-28 | Geotechnical engineering surrounding rock crack detection method |
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| CN108983307A true CN108983307A (en) | 2018-12-11 |
| CN108983307B CN108983307B (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738523A (en) * | 2019-01-24 | 2019-05-10 | 西京学院 | A kind of geotechnical engineering wall-rock crack detection method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487134A (en) * | 2016-01-19 | 2016-04-13 | 山东科技大学 | Rock mass crack three-dimensional detection system and detection method |
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- 2018-07-28 CN CN201810849849.4A patent/CN108983307B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487134A (en) * | 2016-01-19 | 2016-04-13 | 山东科技大学 | Rock mass crack three-dimensional detection system and detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738523A (en) * | 2019-01-24 | 2019-05-10 | 西京学院 | A kind of geotechnical engineering wall-rock crack detection method |
| CN109738523B (en) * | 2019-01-24 | 2021-09-14 | 西京学院 | Geotechnical engineering surrounding rock crack detection method |
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| CN108983307B (en) | 2020-04-28 |
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Effective date of registration: 20200331 Address after: No. 317, Rongjun Road, Liuzhou City, Guangxi Zhuang Autonomous Region Applicant after: LIUZHOU ENGINEERING INVESTIGATION INSTITUTE OF NUCLEAR INDUSTRY Address before: 355003 Zhongxing Street, Fu'an City, Ningde, Fujian Province, No. 23 Applicant before: Lin Guangqin |
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