CN107870351B - Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor - Google Patents
Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor Download PDFInfo
- Publication number
- CN107870351B CN107870351B CN201711406469.5A CN201711406469A CN107870351B CN 107870351 B CN107870351 B CN 107870351B CN 201711406469 A CN201711406469 A CN 201711406469A CN 107870351 B CN107870351 B CN 107870351B
- Authority
- CN
- China
- Prior art keywords
- hole
- sleeve
- installing
- microseismic sensor
- dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a mounting method of a dual-fixed recoverable microseismic sensor in and out of a hole. Further, the iron sleeve is sent to the bottom of the drill hole through a rubber pipe. And finally, in the hole, carrying out full hole grouting on the gap between the iron sleeve and the rock body hole wall and the gap between the rubber pipe and the rock body hole wall, so that the iron sleeve and the rock body are completely coupled and fixed. And during recovery, the microseismic sensor is taken out from the borehole through the recovery device. The invention better solves the problems that the microseismic sensor in the drill hole is difficult to fix and the installation quality and the installation power can not be ensured, and ensures the high-quality successful installation of the microseismic sensor through the double fixed coupling outside the hole. The invention can be widely used for monitoring the micro-seismic of the engineering of underground powerhouse, tunnel, side slope and roadway.
Description
Technical Field
The invention relates to the field of microseismic monitoring, in particular to a method for installing a hole-inside and hole-outside double-fixing recyclable microseismic sensor.
Background
The microseismic monitoring technology utilizes microseismic sensors distributed in different directions in space to capture stress wave information emitted in the process of rock mass micro-cracking, analyzes and processes the stress wave information, determines the time, position, energy release and other information of the occurrence of the micro-cracking event, infers the internal stress state and the failure condition of the rock mass on the basis of the information, and further dynamically predicts and warns dynamic disasters. The microseism monitoring technology starts from the initial stage of rock mass deformation, tracks and monitors the progressive destructive process from the fracture of unit rock blocks to the instability of the whole rock mass in the rock mass, greatly promotes the scientificity of monitoring work, and simultaneously improves the accuracy and the advance of engineering and geological disaster early warning. Compared with the traditional observation point or section monitoring, the microseism monitoring technology can acquire the whole process of stress, strain change and displacement migration evolution in a three-dimensional space rock body in real time. According to the international achievements, the micro-seismic monitoring technology fully exerts the response of the omnibearing monitoring rock mass to the excavation, and has unique advantages in the aspects of short-term rock mass excavation safety early warning and forecasting, medium and long-term disaster grading and stability evaluation.
In order to better capture rock mass micro-fracture information accompanying in a disaster inoculation process and avoid the attenuation of a fracture signal by a rock mass surface fracture area, a micro-seismic sensor is generally installed inside a rock mass through a drilling hole. Because the microseism sensor is expensive, in order to save economy and avoid resource waste, the installation of the microseism sensor selects a recyclable installation method as far as possible, namely the microseism sensor is installed in a hole when monitoring is needed, and the microseism sensor is recycled after the monitoring task is finished. Therefore, in the practical process, a series of recoverable microseismic sensor installation devices and methods are invented (Chinese patent publication No. 201020114125.4, published Japanese 2010.02.11, the name of the invention is 'a non-coal mine microseismic monitoring device'. Chinese patent publication No. 201320230224.2, published Japanese 2013.05.02, the name of the invention is 'a device for installing and recovering microseismic sensors'. Chinese patent publication No. 201320056329.0, published Japanese 2013.01.31, the name of the invention is 'movable microseismic sensor fixing structure'. Chinese patent publication No. 201220116630.1, published Japanese 2012.03.26, the name of the invention is 'anchored detachable microseismic sensor installation device'. Chinese patent publication No. 200920353451.8, published Japanese 2009.12.23, the name of the invention is 'acoustic emission deep hole monitoring sensor protection, fixing and recovery integrated device'. Chinese patent publication No. 201210347198.1, published Japanese 2012.09.18, the name of the invention is 'a microseismic unidirectional sensor rock mass omnibearing deep hole installation and recovery device'. Chinese patent publication No. 201210346379.2, the invention discloses 2012.09.18, entitled "an omnibearing deep hole installation and recovery device for a microseismic three-way sensor fractured rock mass". Chinese patent publication No. 201410053996.2, published No. 2014.02.18, entitled "deep hole installation and recovery device for water-containing soft rock-soil mass of microseismic sensor". The invention discloses a recoverable installation device and a recoverable installation method of a microseismic sensor in Chinese patent publication No. 104330819B, published Japanese 2015.02.04. ) The existing installation method of the recyclable micro-seismic sensor generally directly pushes the micro-seismic sensor to a monitoring position through tools such as a push rod and the like, the micro-seismic sensor is fixed in a hole and coupled with a rock mass, and the method cannot ensure and test whether the micro-seismic sensor is well coupled with the rock mass or not and is difficult to ensure the installation quality and the installation power. This is because when installing in the hole, because the microseismic sensor installation position is a certain distance away from the orifice, the fixed operation of microseismic sensor is difficult to control, and it can't be ensured and checked whether the microseismic sensor is well coupled with the hole wall. When mechanical fixing is adopted, fixing force is difficult to grasp, the micro-seismic sensor is damaged when the force is too large, and the micro-seismic sensor cannot be fully coupled with a rock body when the force is too small; when the anchor is fixed with anchor resin or the like, the position, strength and anchoring time of the anchor resin are difficult to grasp, and thus the anchor fails. If the microseismic sensor is installed outside the borehole, the propagation of the microdisrupting signal from inside the borehole to outside the borehole will cause attenuation of the microseismic signal. The mounting quality of the micro-seismic sensor directly determines the catching capacity of rock mass micro-fracture in the disaster inoculation process, and further influences the early warning effect on the disaster.
Disclosure of Invention
The invention aims to overcome the defects of the installation method of the recoverable microseismic sensor and provide an installation method of the recoverable microseismic sensor with high-quality and successfully installed in and out holes.
In order to achieve the purpose, the invention designs a method for mounting a hole-inside and hole-outside double-fixing recoverable microseismic sensor, which is characterized by comprising the following steps:
outside the hole, installing the microseismic sensor sleeved with the recyclable device in a sleeve with a sealed bottom, and detecting the installation quality;
providing a plurality of sections of connecting pipes which can be mutually butted, have the same inner diameter as the sleeve and can be butted with the sleeve;
pushing the sleeve provided with the micro-vibration sensor into the hole, adding connecting pipes section by section in the process that the sleeve is pushed to the bottom of the hole, and ensuring that a signal wire of the micro-vibration sensor is arranged in the sleeve and the connecting pipes;
and after the sleeve is pushed to the bottom of the drilled hole, grouting is carried out on the drilled hole, and the fixation of the microseismic sensor is completed.
Further, a support rod is arranged at the bottom of the sleeve.
Still further, the support rod is an iron rod.
Furthermore, the length of the support rod is 18-22 cm.
Furthermore, in the process that the sleeve is pushed into the hole bottom, the connection pipes are in butt joint with each other when the upper section of the connection pipe is pushed into the drill hole to 30cm and is not fed into the drill hole.
Further, the sleeve is an iron sleeve or a steel sleeve, and the connecting pipe is a rubber connecting pipe.
Furthermore, the inner diameter and the outer diameter of the sleeve are the same as those of the connecting sleeve, the connecting sleeve is arranged on the outer wall of the joint of the sleeve and the connecting sleeve, the connecting sleeve is fixed on the sleeve and the connecting sleeve through bolts, and the connecting pipes are mutually connected through the external connecting sleeve and the bolts.
Further, the length of the connecting pipe is 1-2 m, and the length of the connecting sleeve is 15-25 cm.
Further, bolt connecting holes for connecting bolts are formed in the sleeve and the connecting sleeve, and the bolt connecting holes are arranged 5cm away from the end face of the connecting pipe or the sleeve.
Further, the length of the sleeve is larger than 9-15 cm of the recyclable device.
Compared with the prior art, the invention has the following advantages:
1. and the microseismic sensor is fixedly coupled outside the hole before being placed in the drill hole, the fixing operation outside the hole is convenient, the coupling quality can be checked and tested, and the mounting quality of the microseismic sensor is ensured.
2. In the downthehole, carry out full hole slip casting with the space between iron sleeve and rubber tube and the rock mass pore wall, make iron sleeve and rock mass complete coupling fixed, need not the fixed operation of installation pole, convenient operation.
3. The double fixed coupling outside the inner hole of the hole ensures the installation quality and the installation power of the microseismic sensor.
Drawings
FIG. 1 is an overall longitudinal section of the present invention
FIG. 2 is a sectional view of the connection part of the iron sleeve and the rubber tube
Wherein, 1-drilling, 2-sleeve, 3-microseism sensor, 4-nut, 5-connecting sleeve, 6-connecting pipe, 7-microseism sensor signal transmission line, 8-supporting rod, 9-microseism sensor recovery device, 10-rock mass, 11-grouting pipe
Detailed Description
The invention is described in further detail below with reference to the following figures and specific embodiments:
as shown in the figure, when the micro-seismic sensor 3 and the recoverable device 9 are arranged outside the hole, the micro-seismic sensor and the recoverable device are arranged in the iron sleeve 2 to be fixed, the installation quality is detected, and the fixed installation is ensured to be correct. Different fixing modes can be selected according to the selected recyclable device 9, and a common wedge-shaped sliding iron block recycling device is generally adopted for fixing. In order to meet the requirement and facilitate installation and fixation, the length of the iron sleeve 2 is 10cm greater than that of the microseismic sensor and the recoverable device, and the diameter of the iron sleeve 2 is determined according to the diameter of the microseismic sensor 3 and the type and the size of the selected recoverable device 9, so that the microseismic sensor 3 can be conveniently fixed and detached in the sleeve 2. An iron rod with the length of 20cm is welded outside the bottom end of the iron sleeve 2, so that the iron sleeve 2 is prevented from contacting with hole bottom stone slag when being pushed to the bottom of the drill hole 1, and the collection of micro-fracture signals is influenced. 4 threaded holes are arranged on the cross section 5cm away from the top end of the iron sleeve 2, the threaded holes are uniformly distributed along the radial direction and are used for being in butt joint with a connecting pipe 6, and the connecting pipe 6 is generally made of a rubber pipe. The outer wall of the joint of the sleeve 2 and the connecting sleeve 6 is provided with a connecting sleeve 5, and the connecting sleeve 5 is generally a rubber sleeve. And a microseismic sensor signal transmission line 7 penetrates through the connecting pipe 6 and the connecting sleeve 5 outside the hole, the connecting pipe 6 is butted with the iron sleeve 2, and the iron sleeve 2 is connected with the connecting pipe 6 through the connecting sleeve 5 and the nut 4. The inner diameter and the outer diameter of the connecting pipe 6 are consistent with those of the iron sleeve 2, so that seamless butt joint of the connecting pipe and the iron sleeve is guaranteed, the length of the rubber pipe is 1.5m, and the connecting pipe 6 and the iron sleeve 2 are conveniently connected outside the drill hole 1. The inner diameter of the connecting sleeve 5 is consistent with the outer diameter of the connecting pipe 6, and the seamless fixation between the connecting sleeve 5, the connecting pipe 6 and the iron sleeve 2 is ensured. The length of the rubber sleeve 6 is 20cm, 4 threaded holes are respectively arranged on the cross section of the position 5cm away from the two ends of the connecting pipe 6, and the threaded holes are uniformly distributed along the radial direction so as to ensure that the connecting sleeve 5 can be connected with the connecting pipe 6 and the iron sleeve 2 through the threads 4. And 4 threaded holes are respectively arranged on the cross sections at the positions 5cm away from the two ends of the connecting sleeve 5, are uniformly distributed along the radial direction, and are spatially matched with the threaded holes of the connecting pipe 6 and the iron sleeve 2. When the connected iron sleeve 2 and the connecting pipe 6 are sent into the drill hole 1 to 30cm and are not sent into the drill hole 1, the microseismic sensor signal transmission line 7 penetrates through the second connecting pipe 6 outside the drill hole 1. And in the drilling 1, the second connecting pipe 6 is butted with the first connecting pipe 6 and is connected with the first connecting pipe through the rubber sleeve 5 and the nut 4, and after connection, the second connecting pipe is pushed into the drilling 1 to 30cm and is not sent into the drilling 1, and then the third connecting pipe 6 is connected. By analogy, the connected connecting pipe 6 is continuously pushed into the drill hole 1, the iron support rod 8 is arranged at the bottom of the sleeve 2, and the connecting pipe 6 is pushed into the drill hole 1 until the support rod 8 touches the bottom of the hole. And pushing the grouting pipe 11 to the bottom of the hole from the orifice, and injecting cement mortar into the drill hole 1 to fill the hole with the cement mortar. And after the microseismic monitoring is finished, the microseismic sensor 3 is taken out and recovered through the recoverable device 9. The above examples are only for illustrating the technical solutions of the present invention and not for limiting, and it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and shall be covered by the claims of the present invention.
Claims (10)
1. A method for installing a hole-inside and hole-outside dual-fixed recyclable microseismic sensor is characterized by comprising the following steps:
outside the hole, installing the microseismic sensor (3) sleeved with the recyclable device (9) in the sleeve (2) with the sealed bottom, and detecting the installation quality;
providing a plurality of sections of connecting pipes (6) which can be mutually butted, have the same inner diameter as the sleeve and can be butted with the sleeve (2);
pushing a sleeve (2) provided with a micro-seismic sensor (3) into the hole, adding connecting pipes (6) section by section in the process that the sleeve is pushed to the bottom of the hole, and ensuring that a signal wire of the micro-seismic sensor is arranged in the sleeve and the connecting pipes;
and when the sleeve (2) is pushed to the bottom of the drilled hole, grouting is carried out on the drilled hole, and the fixation of the microseismic sensor is completed.
2. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: the bottom of the sleeve (2) is provided with a support rod (8).
3. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 2 wherein: the support rod (8) is an iron rod.
4. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 2 wherein: the length of the support rod (8) is 18-22 cm.
5. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: in the process that the sleeve (2) is pushed into the hole bottom, the connecting pipes (6) are butted with each other when the upper section of connecting pipe (6) is pushed into the drill hole to 30cm and the drill hole is not fed.
6. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: the sleeve (2) is an iron sleeve or a steel sleeve, and the connecting pipe (6) is a rubber connecting pipe.
7. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: the sleeve (2) is the same with the external diameter in connecting sleeve (6), and sleeve (2) and connecting sleeve (6) junction outer wall are provided with adapter sleeve (5), adapter sleeve (5) pass through the bolt fastening on sleeve (2) and connecting sleeve (6), connecting pipe (6) also realize connecting through outside adapter sleeve and bolt each other.
8. The method of installing a dual in-hole and out-of-hole fixed recoverable microseismic sensor of claim 7 wherein: the length of the connecting pipe (6) is 1-2 m, and the length of the connecting sleeve (5) is 15-25 cm.
9. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: bolt connecting holes for connecting bolts are formed in the sleeve (2) and the connecting sleeve (6) and are arranged 5cm away from the end face of the connecting pipe or the sleeve.
10. The method for installing a dual in-hole and out-hole fixed recoverable microseismic sensor of claim 1 wherein: the length of the sleeve (2) is greater than 9-15 cm of the recyclable device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406469.5A CN107870351B (en) | 2017-12-22 | 2017-12-22 | Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406469.5A CN107870351B (en) | 2017-12-22 | 2017-12-22 | Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107870351A CN107870351A (en) | 2018-04-03 |
| CN107870351B true CN107870351B (en) | 2020-07-10 |
Family
ID=61756013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711406469.5A Active CN107870351B (en) | 2017-12-22 | 2017-12-22 | Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107870351B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116411B (en) * | 2018-08-30 | 2019-11-12 | 东北大学 | Microseismic sensors are fixed and recyclable device in a kind of hole suitable for different pore size |
| CN109375259B (en) * | 2018-09-03 | 2020-11-06 | 山东大学 | Isolation device and method for tunnel geological advanced prediction receiver casing |
| CN110007339B (en) * | 2019-04-22 | 2020-01-17 | 中国矿业大学 | Device and method for quickly installing recyclable microseismic sensor drill hole |
| CN111221041B (en) * | 2020-01-18 | 2024-08-30 | 浙江交投高速公路建设管理有限公司 | Installation and recovery device and method for microseismic sensor in tunnel top hole |
| CN113640867B (en) * | 2021-07-23 | 2023-07-21 | 辽宁科技大学 | Installation device and installation method of micro-seismic sensor in water gushing area |
| CN114563813B (en) * | 2022-01-20 | 2024-08-13 | 中国科学院武汉岩土力学研究所 | Device and method for installing updip deep hole microseismic sensor |
| CN114594511B (en) * | 2022-03-25 | 2024-08-27 | 山东科技大学 | Device and method for rapidly installing and recovering microseismic sensor in underground hole |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8581580B2 (en) * | 2010-06-02 | 2013-11-12 | Halliburton Energy Services, Inc. | Downhole orientation sensing with nuclear spin gyroscope |
| CN102854525B (en) * | 2012-09-18 | 2014-12-03 | 中国科学院武汉岩土力学研究所 | Omnidirectional cataclastic rock mass deep hole installation and recovery device of microseismic unidirectional sensor |
| CN102853895B (en) * | 2012-09-18 | 2013-11-27 | 中国科学院武汉岩土力学研究所 | Device for mounting and recovering slight-shock three-dimensional sensor in all-dimensional deep hole of cataclastic rock mass |
| CN103792569B (en) * | 2014-02-18 | 2016-03-02 | 中国科学院武汉岩土力学研究所 | A kind of microseismic sensors moisture weak rocks soil body deep hole is installed and retracting device |
| CN104330819B (en) * | 2014-09-01 | 2017-09-29 | 中国科学院武汉岩土力学研究所 | A kind of microseismic sensors recoverable erecting device and installation method |
| CN104834002B (en) * | 2015-05-07 | 2017-09-08 | 贵州省矿山安全科学研究院 | Device capable of stretching and embedding for fixing and recovering microseismic sensor and use method thereof |
-
2017
- 2017-12-22 CN CN201711406469.5A patent/CN107870351B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107870351A (en) | 2018-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107870351B (en) | Method for installing in-hole and out-hole dual-fixing recyclable microseismic sensor | |
| CN104330819B (en) | A kind of microseismic sensors recoverable erecting device and installation method | |
| AU2020102858A4 (en) | Method of recyclable microseismic sensor installation with inside-hole and outside-hole double-fixed mode | |
| CN102854525B (en) | Omnidirectional cataclastic rock mass deep hole installation and recovery device of microseismic unidirectional sensor | |
| EP2801697B1 (en) | Longwall working face, non-pillared mining method | |
| CN201401174Y (en) | System monitoring broken rock zone by high-density electrical resistivity | |
| US10976454B2 (en) | Microseismic monitoring system | |
| CN111577360B (en) | Use method of recoverable acquisition instrument for real-time observation of stress characteristic and vibration characteristic of stope surrounding rock | |
| CN109116411A (en) | Microseismic sensors are fixed and recyclable device in a kind of hole suitable for different pore size | |
| CN105241656A (en) | Physical simulation experiment system and method of deep-tunnel high-resistance extensible anchor pole support | |
| CN102997886A (en) | Monitoring method for remotely measuring and controlling damage depths of floor strata | |
| CN204827501U (en) | High precision fiber optic grating cavity of excelling in dynamometry stock | |
| CN109387244A (en) | A kind of intelligent monitoring method and system of mine fault stability | |
| CN103775073B (en) | A kind of getting working face geostatic stress distribution characteristics detection method | |
| CN111239257A (en) | Ultrasonic probe introduction and coupling device, rock mass acoustic wave detection device and method | |
| CN113187471B (en) | Active measurement device and method for Newton force crossing fault interface in shale gas exploitation process | |
| CN103216265A (en) | High-stress roadway surrounding rock deformation control method | |
| CN103760595B (en) | Method for arranging microquake real-time monitoring sensors in large-diameter surge shaft excavation process | |
| CN107167840B (en) | Recyclable and reusable microseismic sensor | |
| CN211477049U (en) | Effective grouting length test structure and system for anchor rod installation | |
| CN111380638B (en) | Method for improving actual measurement precision of mining induced stress in solid coal area | |
| CN113803067A (en) | Local rock burst prevention and control device for coal mine | |
| CN113899811A (en) | Sound wave method test system for accumulative damage of coal mine tunnel rock mass | |
| CN111721457A (en) | Method for monitoring sliding surface shearing force and burial depth in tunnel deeply buried across sliding mass | |
| CN212803112U (en) | Recoverable mechanism of deep hole wave detector of mine micro-seismic monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |