CN102536209B - The device of testing gas drainage drill hole depth through microseismic positioning - Google Patents
The device of testing gas drainage drill hole depth through microseismic positioning Download PDFInfo
- Publication number
- CN102536209B CN102536209B CN201210039435.8A CN201210039435A CN102536209B CN 102536209 B CN102536209 B CN 102536209B CN 201210039435 A CN201210039435 A CN 201210039435A CN 102536209 B CN102536209 B CN 102536209B
- Authority
- CN
- China
- Prior art keywords
- sound wave
- drill bit
- depth
- drill
- receiver
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 34
- 239000011435 rock Substances 0.000 abstract description 21
- 230000035939 shock Effects 0.000 abstract description 10
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000000644 propagated effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of device of testing gas drainage drill hole depth through microseismic positioning, comprise drill bit, drilling rod, motor, sonic analyzer and acoustic receiver; Drill bit is fixed on one end of drilling rod, and the other end of drilling rod is connected with the power output shaft of motor, and acoustic receiver is fixed on the other end of drilling rod, the signal input sonic analyzer that acoustic receiver receives.When using the device of this testing gas drainage drill hole depth through microseismic positioning, only need this device be arranged on country rock, drill bit is stretched into and holes interior and contact with the country rock of foot of hole, direct utilization spuds in shock wave that moment sends to measure drilling depth, be easy to measure because drill bit breaks the speed propagated in drilling rod of macroseism signal that country rock produces, measure the propagation time of shock wave from drill bit to acoustic receiver, just drilling depth can be calculated accurately, not only measure drilling depth accurately high, monitoring velocity is fast, and cost is lower.
Description
Technical Field
The invention relates to a device for measuring the depth of a drill hole, in particular to a device for measuring the depth of a gas drainage drill hole by microseismic positioning.
Background
In the process of coal mining, due to the existence of gas, great harm is brought to coal mine safety mining, such as gas explosion, gas outburst and the like, the life safety of mine workers is seriously harmed, and great economic loss is caused. Therefore, when the existing mine is mined, the coal seam to be mined is drilled when the roadway is excavated, so that the overflow of gas in the coal seam is facilitated, and the occurrence of gas disasters is reduced. However, when gas is removed in actual coal mine drilling, part of enterprises or constructors save cost for reducing workload, and often reduce the drilling depth in drilling, so that the gas discharge amount of the coal seam to be excavated is insufficient, and potential hazards are formed. Generally, the depth of a coal mine gas drainage drill hole is about 100m, which is the currently designed safe drill hole depth, and in practice, most of the drill holes are only 50% of the designed drill hole depth, so that the safety of subsequent mining work is seriously influenced.
In the prior art, the device for measuring the drilling depth mainly has the following defects: the travel of a piston of a drilling machine in the device is measured to obtain the drilling depth, and the travel of the piston can be manually set and is easy to change, so that the drilling depth cannot be truly reflected; in addition, at least 4 probes are needed for arranging measuring points on the surrounding rock surface of the roadway to determine the position of the seismic source of the drill bit, and due to the fact that surrounding rocks are not uniform, the measuring error is large, the monitoring speed is low, the number of monitoring in a single day is small, and the cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the device for measuring the gas drainage drilling depth by microseismic positioning, which has the advantages of high accuracy in measuring the drilling depth, high monitoring speed and lower cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
the device for measuring the gas drainage drilling depth by microseismic positioning comprises a drill bit, a drill rod, a motor, a sound wave analyzer and a sound wave receiver; the drill bit is fixed on one end of the drill rod, the other end of the drill rod is connected with the power output shaft of the motor, the sound wave receiver is fixed on the other end of the drill rod, and signals received by the sound wave receiver are input into the sound wave analyzer.
As a preferable scheme of the present invention, the sound wave receiver is provided with a signal transmitter for transmitting the sound wave receiver to receive the vibration sound wave, and the sound wave analyzer is provided with a signal receiver for receiving a signal transmitted by the signal transmitter.
Compared with the prior art, the device for measuring the depth of the gas drainage borehole by microseismic positioning has the advantages that:
1. when the device for measuring the gas drainage drilling depth by using the microseismic positioning is used, the device is only required to be installed on the surrounding rock, so that the drill bit extends into the drill hole and is in contact with the surrounding rock at the bottom of the drill hole, the drilling depth is measured by directly utilizing the shock wave emitted at the moment of drilling, the propagation speed of a strong shock signal generated by the broken surrounding rock of the drill bit in the drill rod is very easy to measure, the propagation time of the shock wave from the drill bit to the sound wave receiver is measured, the drilling depth can be accurately calculated, the accuracy of the measurement of the drilling depth is high, the monitoring speed is high, and the cost is lower.
2. The device adopts signal transmitter and signal receiver to input the acoustic wave signal that broken country rock produced with acoustic wave receiver first time to acoustic wave analyzer through wireless mode, thereby has avoided adopting the wire to arrange among the prior art and twine the defect that influences the signal reception effect.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for determining the depth of a gas drainage borehole by microseismic location.
In the drawings, 1 — a drill bit; 2, drilling a drill rod; 3-an electric motor; 4-acoustic wave analyzer; 5-a sonic receiver; 6-a signal transmitter; 7-a signal receiver; 8, surrounding rock; 9-switch.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
As shown in figure 1, the device for measuring the gas drainage drilling depth by microseismic location comprises a drill bit 1, a drill stem 2, a motor 3, an acoustic wave analyzer 4 and an acoustic wave receiver 5. The drill bit 1 is fixed on one end of a drill rod 2, the other end of the drill rod 2 is connected with a power output shaft of a motor 3, an acoustic wave receiver 5 is fixed on the other end of the drill rod 2, and signals received by the acoustic wave receiver 5 are input into an acoustic wave analyzer 4. The sound wave receiver 5 is fixed at the end part of the drill rod 2 connected with the motor 3, so that the interference of the seismic source signal received by the sound wave receiver 5 is small, and the signal is obvious.
The method for measuring the depth of the gas drainage drill hole by using the device comprises the following steps:
1) determining the speed of propagation of a shock wave generated when the drill bit breaks through the surrounding rock in the drill rod 2V。
2) And a device for measuring the gas drainage drilling depth is arranged on the surrounding rock 8, so that the drill rod 2 is perpendicular to the surrounding rock 8, and the drill bit 1 extends into the drill hole and is in contact with the surrounding rock 8 at the bottom of the drill hole.
3) The motor 3 and the sound wave receiver 5 are synchronously started by the switch 9 (in the embodiment, the switch 9 is fixedly arranged on the motor control box), and the time when the drill rod 2 starts to rotate is recorded by a timert 0 . The switches for starting the sound wave receiver 5 and the motor 3 for starting and controlling the drill rod 2 are set to be the same switch, so that the drill rod 2 and the sound wave receiver 5 are started synchronously, and timing is started.
4) Inputting the sound wave signal generated by the broken surrounding rock of the drill bit 1 received by the sound wave receiver 5 into the sound wave analyzer 4, filtering by the sound wave analyzer 4 to obtain the required vibration waveform, and recording the time when the sound wave signal generated by the broken surrounding rock is firstly received by the sound wave receiver 5t. Because other noise waves around the drill bit 1 are more, but the wave shock generated by breaking the surrounding rock is the strongest, and the vibration waveform required by the test can be obtained through certain filtering processing so as to obtain accurate propagation time.
5) Calculating borehole depthH: by the formulaH=L－hCalculation, in the formula:hthe distance between the surface of the surrounding rock 8 and the sonic receiver 5 (in this embodiment, the sonic receiver 5 is fixedly arranged at the outer end of the drill rod 2,hthe length of the drill rod 2 exposed to the outside),Lthe distance between the drill bit and the sonic receiver; wherein,L=V（t－t 0 ) In the formula:Vthe velocity at which the shock wave propagates in the drill pipe,tthe time when the acoustic receiver first receives the acoustic signal generated by the broken surrounding rock,t 0 the time when the drill rod starts to rotate.
When the device is used for monitoring the gas drainage drilling depth, the drilling depth is only measured without measuring the final drilling position point, and the drilling depth can be directly measured by using the vibration wave emitted at the moment of drilling. The propagation speed of a strong shock signal generated by the drill bit breaking the surrounding rock in the drill rod is easy to determine, the rotation time of the drill bit can be controlled manually, the propagation time of the shock wave from the drill bit to the sound wave receiver can be determined, the drilling depth can be accurately calculated, the calculation method is simple, and the measurement work can be completed only by one probe (namely one sound wave receiver).
In this embodiment, a signal transmitter 6 for transmitting the sound wave receiver 5 to receive the vibration sound wave is further disposed on the sound wave receiver 5, a signal receiver 7 for receiving a signal sent by the signal transmitter 6 is disposed on the sound wave analyzer 4, and the sound wave signal generated by the sound wave receiver 5 receiving the surrounding rock 8 for the first time is input into the sound wave analyzer 4 in a wireless manner, so that the defect that the signal receiving effect is affected by the arrangement and winding of a lead in the prior art is overcome.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (1)
1. Device of microseism location survey gas drainage drilling depth, its characterized in that: comprises a drill bit (1), a drill rod (2), a motor (3), a sound wave analyzer (4) and a sound wave receiver (5); the drill bit (1) is fixed at one end of the drill rod (2), the other end of the drill rod (2) is connected with a power output shaft of the motor (3), the sound wave receiver (5) is fixed at the end part of the drill rod (2) connected with the motor (3), and signals received by the sound wave receiver (5) are input into the sound wave analyzer (4); the sound wave analyzer is characterized in that a signal transmitter (6) for transmitting the sound wave receiver (5) to receive vibration sound waves is arranged on the sound wave receiver (5), and a signal receiver (7) for receiving signals transmitted by the signal transmitter (6) is arranged on the sound wave analyzer (4); the switch for starting the sound wave receiver and the switch for starting the motor for controlling the drill rod are the same switch, so that the drill rod and the sound wave receiver are synchronously started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039435.8A CN102536209B (en) | 2012-02-21 | 2012-02-21 | The device of testing gas drainage drill hole depth through microseismic positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039435.8A CN102536209B (en) | 2012-02-21 | 2012-02-21 | The device of testing gas drainage drill hole depth through microseismic positioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536209A CN102536209A (en) | 2012-07-04 |
| CN102536209B true CN102536209B (en) | 2015-11-18 |
Family
ID=46344083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210039435.8A Expired - Fee Related CN102536209B (en) | 2012-02-21 | 2012-02-21 | The device of testing gas drainage drill hole depth through microseismic positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536209B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867192B (en) * | 2014-03-18 | 2015-06-10 | 中国地质大学（武汉） | Hole depth measuring method based on sound waves in drilling process |
| CN104832160A (en) * | 2015-05-21 | 2015-08-12 | 河北煤炭科学研究院 | Downhole drilling trajectory microseism description method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107423A (en) * | 2005-01-21 | 2008-01-16 | 圭代利纳公司 | A method and a system for determining the position of a drill bit |
| CN101363824A (en) * | 2008-05-12 | 2009-02-11 | 西安西科测控设备有限责任公司 | Device for real time monitoring mine roof rock formation or concrete structure stability |
| CN101787897A (en) * | 2009-12-30 | 2010-07-28 | 西安西科测控设备有限责任公司 | System and method for predicting coal and gas outburst risk of mine in real time |
| CN201794617U (en) * | 2009-12-30 | 2011-04-13 | 西安西科测控设备有限责任公司 | System for predicting outburst risk of coal and gas in mine in real time |
-
2012
- 2012-02-21 CN CN201210039435.8A patent/CN102536209B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107423A (en) * | 2005-01-21 | 2008-01-16 | 圭代利纳公司 | A method and a system for determining the position of a drill bit |
| CN101363824A (en) * | 2008-05-12 | 2009-02-11 | 西安西科测控设备有限责任公司 | Device for real time monitoring mine roof rock formation or concrete structure stability |
| CN101787897A (en) * | 2009-12-30 | 2010-07-28 | 西安西科测控设备有限责任公司 | System and method for predicting coal and gas outburst risk of mine in real time |
| CN201794617U (en) * | 2009-12-30 | 2011-04-13 | 西安西科测控设备有限责任公司 | System for predicting outburst risk of coal and gas in mine in real time |
Non-Patent Citations (1)
| Title |
|---|
| 随钻地震中地层参数的预测;韩继勇;《测井技术》;20001231;第24卷(第3期);论文第177页第1栏第6段至第2栏第8段、图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536209A (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3542190B1 (en) | Soil probing device having built-in generators and detectors for compressional waves and shear waves | |
| CN105697023B (en) | A kind of tunnel geology exploitation method, system and mini-sized tunnelling machine | |
| CN110988981B (en) | Phased array sound wave advanced prediction system and method suitable for drilling and blasting method tunnel | |
| WO2018223571A1 (en) | Monopole acoustic logging-while-drilling instrument used in cooperation with bottom drilling tool assembly, and method for measuring shear wave velocity of slow formation | |
| CN105089646A (en) | Logging-while-drilling resistivity measuring device with data transmission function and method | |
| CN108802193A (en) | A kind of detecting devices and detection method of Exploring Loose Rock Country in Tunnels | |
| CN104818735A (en) | Exploring drill bit and method for detecting pile foundation by using exploring drill bit | |
| CN105735971A (en) | Drilling hole depth detection system based on elastic waves and detection method thereof | |
| CN102562033B (en) | The method of testing gas drainage drill hole depth through microseismic positioning | |
| CN109100421B (en) | Device and method for detecting grouting compactness of anchor cable in embedded mode | |
| CN102536209B (en) | The device of testing gas drainage drill hole depth through microseismic positioning | |
| CN111337578A (en) | Waveguide acoustic monitoring method and device for strength evolution development of tailing cemented filling body | |
| CN115390129A (en) | In-situ acoustic penetration device with built-in longitudinal and transverse wave transmitting and receiving transducers | |
| CN103528629B (en) | The many performance parameter testing devices of a kind of geophysical drilling machine | |
| CN111273340A (en) | Method for forecasting geology of tunnel along with mining in advance | |
| CN104912552A (en) | Coal-rock mass ground stress distribution feature detection method and coal-rock mass ground stress distribution feature detection device | |
| CN103698805A (en) | Columnar jointed rock mass unidirectional micro-seismic monitoring sensor layout direction determining method | |
| CN103775073A (en) | Mining working face ground stress distribution characteristic detection method | |
| JPH08226975A (en) | Method for surveying geology in front of face of tunnel | |
| RU2410727C1 (en) | Method of determining size of cracks in rocks | |
| CN105649608A (en) | Device for measuring depth of gas drainage borehole in micro-shock locating manner | |
| CN105089651A (en) | Logging-while-drilling resistivity measuring device and logging-while-drilling resistivity measuring method | |
| CN214749971U (en) | Synchronous lifting device of sound wave test transducer and ultrasonic detection system | |
| RU2480583C1 (en) | Telemetric system of bottomhole parameters monitoring | |
| CN207366760U (en) | Probe and its wave velocity testing instrument with the probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |