CN101440707B - Coal-bed gas pressure measuring instrument and measuring method thereof - Google Patents
Coal-bed gas pressure measuring instrument and measuring method thereof Download PDFInfo
- Publication number
- CN101440707B CN101440707B CN2008102432540A CN200810243254A CN101440707B CN 101440707 B CN101440707 B CN 101440707B CN 2008102432540 A CN2008102432540 A CN 2008102432540A CN 200810243254 A CN200810243254 A CN 200810243254A CN 101440707 B CN101440707 B CN 101440707B
- Authority
- CN
- China
- Prior art keywords
- pin
- coal
- chip microcomputer
- gas
- gas pressure
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 239000003245 coal Substances 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000003556 assay Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 description 4
- 101000768061 Escherichia phage P1 Antirepressor protein 1 Proteins 0.000 description 4
- 101000796932 Homo sapiens ADP/ATP translocase 1 Proteins 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 2
- 244000294411 Mirabilis expansa Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000013536 miso Nutrition 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a gas pressure measuring instrument for a coal layer, which is applicable to direct measuration of gas pressure of an underground coal layer in a coal mine. The measuring instrument consists of a signal emitter arranged inside the coal layer and a portable movable receiver arranged inside a laneway; the signal emitter is formed by a pressure transducer, an A/D convertor, a singlechip I and a wireless or wired emission module, wherein the A/D convertor, the singlechip I and the wireless or wired emission module are connected with the pressure transducer sequentially; and the portable movable signal receiver is formed by the wireless or wired emission module, a singlechip II and a display module, wherein the the wireless or wired emission module is sequentially connected with the singlechip II and the display module. The pressure transducer is put to the coal layer, and the gas pressure of the inside of the coal layer is converted to an electric signal to transmitted into and out of the coal layer through the pressure transducer; and the signal is received and processed through the receiving device of the laneway to display the size of the gas pressure of the inside of the coal layer so that the gas content and the prominent dangerousness of the coal layer are predicted and have accurate evaluation results so as to prevent gas accidents. The gas pressuremeasuring instrument has a simple structure, low construction cost, high resolution, accurate measuring data, convenient use and wide practicability.
Description
Technical field
The present invention relates to a kind of coal-bed gas pressure measuring instrument and assay method, be particularly useful for the direct mensuration of coal mine underground coal bed gas pressure.
Background technology
China is the country of coal production maximum in the world, also is one of the most serious country of coal mine gas (methane).Annual China's coal-mine death toll is 200 times of the U.S., more than 10 times of India, and 1,000,000 tons of death rates are 10 times of world average level.According to statistics, more than 600 of the existing State owned coal mines of China, wherein high gas and projecting mine account for half.Between 1983～2000 years, 9 of major gas accidents on average occur in national colliery, and dead 185 people account for 16% of the colliery same period " one through three prevention " total number of accident, 49% of death toll.In addition, gas is one of removing carbon dioxide primary pollution source of causing atmosphere pollution outward, and it has increased atmospheric greenhouse effect, is about 30,000,000,000 m3 and colliery, the whole world drains into the gas amount of atmosphere every year.In view of this, coal mine gas not only consists of significant threat, seriously restricts the performance of coal production ability miner's life and national wealth, has caused bad society and political fallout, but also has polluted human atmospheric environment of depending on for existence.Therefore, the gas control cardinal task that always is used as the China's coal-mine safety in production is grabbed.
During the nearly last ten years, for the tax of grasping mine gas is deposited and Emission Law, with elimination detonating gas source, the generation that prevents coal and gas burst accident, development and utilization gas resources, country has organized the tackling key problem research that Mine Gas Emission Prediction, gas drainage under suction and local gas gather Prevention Technique, obtained a collection of important achievement, for certain positive role has been played in guarantee work safety of coal mine production.In the practice of long-term improvement gas, China has explored the Comprehensive Gas Control pattern that has formed " being determined as the basis with coal seam gas-bearing capacity; predict that take the gas degree of danger (Forecast of Gas Emission and coal and gas outburst risk prediction) is as foundation, take Firedamp precaution measures as means ".
Will effectively carry out gas control work, at first must compare accurately gas pressure measurement, its task is to measure the gas pressure of contained free gas in the coal hole, and namely gas acts on the pressure of pore wall.Coal-bed gas pressure is a principal element that determines coal seam gas-bearing capacity, also is the basic parameter that Coal Seam Outburst Hazard is predicted and estimated simultaneously.This shows that the mensuration work of coal-bed gas pressure is the basis of all Firedamp precaution measures, has irreplaceable critical role.The accuracy of gas pressure value not only restricts mine gas degree of danger forecasting reliability, and will affect on this basis and validity and the economy of the Firedamp precaution measures formulated.
People have carried out large quantity research to the assay method of coal-bed gas pressure at present, and have carried out widely determination of coal seam gas pressure work.But the most frequently used and the most reliable method still obtains by the down-hole direct measuring method.Directly measure coal-bed gas pressure method (being called for short direct manometric method) and be with rig and play a boring to the place of scheduled measurement coal-bed gas pressure, then in boring, place piezometer tube and will hole again and tightly seal obstruction and pressure meter is linked to each other to measure gas pressure with piezometer tube by tunnel, rock stratum or heading.Directly the key of manometric method is the quality of bore closed, but because the existence of piezometer tube is arranged, cause between sealing of hole medium and the piezometer tube to have the microgap, cause sealing of hole not tight, the time of pressure measurement is longer, may cause the measured value of coal-bed gas pressure and true pressure value that very large error is arranged.
Summary of the invention
The objective of the invention is for problems of the prior art, provide a kind of simple in structure, convenient test, precision is high, and is highly sensitive, the coal-bed gas pressure measuring instrument that result of use is good and assay method.
Coal-bed gas pressure measuring instrument of the present invention, consist of by being located at signal projector in the coal seam and the Portable movable receiver in the tunnel, wherein: signal projector is by pressure transmitter, and the A/D converter, single-chip microcomputer and the transceiver module that are linked in sequence with pressure transmitter consist of; The Portable movable receiver is made of be linked in sequence single-chip microcomputer and display module of transceiver module.
The amplifying circuit that described pressure transmitter is comprised of constant-current source U5 and integrated amplifier U3 and the STI100 type pressure sensor that is plugged on the single contact pin JP1 consist of; The model of described A/D converter is MAX1240; The model of described single-chip microcomputer is LPC932; Described transceiver module is nRF905; The model of described display module is the array 1602 of 3V operating voltage.
Method for measuring gas pressure of coal bed of the present invention:
A. with drill bit rock is bored an aperture towards the coal seam direction first, until get into till the coal seam;
B. with steel pipe with crowd into aperture bottom of packaged signal projector;
C. greater than the drill bit of small-bore about 40% aperture is carried out reaming with diameter, reaming degree of depth l is about 2 meters;
D. sealing of hole is carried out in reaming, stop gas excessive;
E. the Portable movable receiver is located near the drilling and sealing position, tunnel, can receives the data that signal projector sends.
Beneficial effect of the present invention: by being located at the pressure transmitter in the coal seam, change pressure signal into the signal of telecommunication, by transceiver module or wired mode communication, in the tunnel, can measure accurately the inner gas pressure in coal seam.Utilize wireless or during wired pressure measurement, sealing of hole is simply tight, whole operating process weak point consuming time, resolution ratio is high, and survey data is accurate.Greatly improved operating efficiency, more accurately coal-bed gas pressure value can be provided, so that coal seam gas-bearing capacity and Coal Seam Outburst Hazard are predicted with evaluation result is more accurate, thereby can draw the scheme of more reasonably administering gas, effectively prevent and treat the generation of gas accident.It is simple in structure, and cost is low, convenient test, and precision is high, and highly sensitive, result of use is good, has widely practicality.
Description of drawings
Fig. 1 is positional structure schematic diagram of the present invention.
Fig. 2 is that signal projector of the present invention consists of block diagram.
Fig. 3 is signal projector circuit theory diagrams of the present invention.
Fig. 4 is that removable receiver of the present invention consists of block diagram.
Fig. 5 is removable acceptor circuit schematic diagram of the present invention.
Wherein: the 1-signal projector; 2-Portable movable receiver; The 3-pressure transmitter, the 4-A/D converter; The 5-single-chip microcomputer; The 6-transceiver module; The 7-display module; The M-coal seam; The H-tunnel; The Y-rock; The l-reaming degree of depth.
The specific embodiment
The invention will be further described below in conjunction with the embodiment in the accompanying drawing:
Shown in Figure 1, coal-bed gas pressure measuring instrument of the present invention is made of signal projector 1 and Portable movable receiver 2, its assay method: adopting diameter is the little drill bit of 45～75mm, the rock Y-direction the coal seam direction bore an aperture, until get into till the M of coal seam, extract drilling rod out; With steel pipe with the signal projector 1 aperture underseam of crowding into; Greater than the drill bit of small-bore about 40% aperture is carried out reaming with the aperture again, reaming degree of depth l is about 2 meters; With mortar or hole packer sealing of hole is carried out in reaming, and seal with silicon rubber, not excessive to guarantee gas; Be suspended in the H of tunnel Portable movable receiver 2 or the hand-held position nearest apart from drilling and sealing, can receive the gas pressure data that signal projector 1 sends.
Shown in Figure 2, signal projector 1 is by pressure transmitter 3, the A/D converter 4 that is linked in sequence with pressure transmitter 3, single-chip microcomputer 5 and transceiver module 6 consist of, and wherein the amplifying circuit that is comprised of constant-current source U5 and integrated amplifier U3 of pressure transmitter and the STI100 type pressure sensor that is plugged on the single contact pin JP1 consist of; The model of A/D converter 4 is MAX1240; The model of single-chip microcomputer 5 is LPC932; Transceiver module 6 is nRF905.
Shown in Figure 3, four lines of the pressure sensor STI100 of transmitter access 4 pins of single contact pin JP1,4 pin of single contact pin JP1 connect the forward output of current regulator diode 1N457, the 1 pin link power supply of constant-current source U5 is anodal, 2 pin of constant-current source U5 connect potentiometer JP6 simultaneously, 1 of JP7,2 bipods, 3 pin of constant-current source U5 connect 3 pin of JP6 and the positive input of diode 1N457 simultaneously, the forward output of diode 1N457 is connecting 3 pin of potentiometer JP7, constant-current source U5 selects suitable current value to provide power supply for pressure sensor by the potentiometer adjusting size; 1 pin of JP1 connects power cathode, the pressure signal negative pole output of 3 pin of single contact pin JP1 connects 2 pin of signal amplifier U3, the anodal output of the pressure signal of 2 pin of single contact pin JP1 connects 3 pin of signal amplifier U3, be connected with resistance R 5 between 1 pin of signal amplifier U3 and 8 pin, 7 pin connect positive source, 4 pin, 5 pin connect power cathode, and the size of resistance R 5 determines the multiplication factor of signal.Signal amplifier U3 will amplify the voltage signal of setting multiple and import 2 pin of input AIN that model is the A/D converter U4 of MAX1240 into by 6 pin, 1 pin of A/D converter U4 connects positive source, 5 pin connect power cathode, 4 pin connect capacitor C 15 and connect power cathode, finish the function of using internal reference voltage 0～2.5V.The pin 7 of A/D converter U4 connects the P0.6CMP pin of single-chip microcomputer 5, pin 8 connects the P0.4CMP pin of single-chip microcomputer LPC932 (U1), and 6 pin are the P0.7CMP pin that the data signal output pin connects single-chip microcomputer U1, and 3 pin connect the P0.5CMP pin of single-chip microcomputer, all the time set high, namely keeping high level is 1.During work: (1) keeps SCLK is 0, makes CS=0, and AD converter begins sampling, and retainer is started working, and then carries out the A/D conversion operations; Transition period, must keep SCLK=0 (the 0th SCLK cycle); Before the data end of output, keep CS=0.(2) wait for T
CONAbout 8uS of time, EOC, it is masked as D
OURising edge of t end output; Then can be under the SECO of SCLK with data from D
OutEnd output.(3) at D
Out12 bit data are exported in the end serial, under 12 (the 1st～12 SCLK clock cycle in the sequential chart) SCLK clock cycle act ons, with 12 transformation results with a high position the preceding form from holding D
OUtExport to single-chip microcomputer LPC932 (U1); 7 pin of single-chip microcomputer U1 connect positive source, and 21 pin connect power cathode, and 6 pin are that P1.5RST resetting pin connecting resistance and electric capacity form reset circuit, use inner crystal oscillator, and 8 pin, 9 pin of single-chip microcomputer U1 are unsettled.Single-chip microcomputer U1 processes rear to data and transceiver module communicates, the 24 pin P0.3CIN of single-chip microcomputer U1 receive the 32 pin TXEN that send out module nRF905, the 25 pin P0.2CIN of single-chip microcomputer U1 receive the 31 pin TRXCE that send out module nRF905, the 26 pin P0.1CIN of single-chip microcomputer U1 receive the 2 pin PWRUP that send out module nRF905, the 3 pin P0.0CMP of single-chip microcomputer U1 receive the 3 pin uCLK that send out module nRF905, the 2 pin P2.1CCD of single-chip microcomputer U1 receive the 6 pin CD that send out module nRF905, the 13 pin P2.2MOSI of single-chip microcomputer U1 receive the 7 pin AM that send out module nRF905, the 24 pin P2.3MISO of single-chip microcomputer U1 receive the 8 pin DR that send out module nRF905, the 15 pin P2.4SS of single-chip microcomputer U1 receive the 10 pin MOSI that send out module nRF905, the 16 pin P2.5PICLK of single-chip microcomputer U1 receive the 11 pin MISO that send out module nRF905, the 27 pin P2.6OCA of single-chip microcomputer 5U1 receive the 12 pin SCK that send out module nRF905, the 28 pin P2.7ICA of single-chip microcomputer U1 receive the 13 pin CSN that send out module nRF905, receive the 20 pin ANT1 that send out module nRF905,21 pin ANT1 external antennas, 14 pin XC1, the external crystal oscillator of 15 pin XC2.When single-chip microcomputer U1 has data to send, the address sends to transceiver module nRF905 with the data that will send chronologically, single-chip microcomputer U1 sets high pin TRXCE1 and the TXEN32 of transceiver module nRF905, the sending mode of transceiver module nRF905 is excited, and transceiver module nRF905 enters the transmission state, and the radio frequency register is opened automatically, data are packed (comprise to data and add prefix and CRC check code), send packet, when data are sent completely, DSR pin CD is set high; Transceiver module nRF905 constantly retransmits by sending the state model programming, until TRX-CE is set low, namely keeping low level is 0, and transceiver module nRF905 process of transmitting is finished, and automatically enters idle pulley.
Shown in Figure 4, Portable movable receiver 2 is made of be linked in sequence single-chip microcomputer 5 and display module 7 of transceiver module 6.The model of single-chip microcomputer 5 is LPC932; Transceiver module 6 is NewMsg-RF905, and the model of display module 7 is the array 1602 of 3V operating voltage.
Shown in Figure 5, potentiometer JP2 is 16 pin interfaces of display module JP1 and single-chip microcomputer LPC932 (U1), 1 pin of display module JP1 connects 3 pin of power cathode and potentiometer JP2 simultaneously, 2 pin connect 1 pin of positive source and potentiometer JP2 simultaneously, 3 pin connect 2 pin of potentiometer JP2, regulate the brightness that character shows by regulator potentiometer, 4 pin CS are 5 pin P1.6OCB that chip select pin connects single-chip microcomputer U1,5 pin connect power cathode, 6 pin connect the 10 pin P1.4NTI of single-chip microcomputer U1, and the P0 mouth that the 7-14 pin connects single-chip microcomputer U1 successively is P0.0-P0.7, and 15 pin connect positive source, 16 pin connect power cathode, and the power supply that provides backlight of display module JP1 is provided.After initialization is finished during work, the pin 4 that display module JP1 is drawn sets low, writing address, set high pin 6 after the time-delay, set low pin 6 after the time-delay again, the pin 4 of display module JP1 is set high data write, set high pin 6 after the time-delay, set low pin 6 after the time-delay again, so loop the demonstration that refreshes of data; 7 pin of single-chip microcomputer U1 connect positive source, 21 pin connect power cathode, 6 pin P1.5RST connect reset circuit, use inner crystal oscillator, 8 pin of single-chip microcomputer U1,9 pin are unsettled, single-chip microcomputer U1 processes rear to data and transceiver module communicates, the 18 pin P1.0TXD of single-chip microcomputer U1 receive the 32 pin TXEN that send out module nRF905, the 17 pin P1.1RXD of single-chip microcomputer 5U1) receive the 31 pin TRXCE that send out module nRF905, the 12 pin P1.2TSCL of single-chip microcomputer U1 receive the 2 pin PWRUP that send out module nRF905, the 5 pin P1.6OCB of single-chip microcomputer U1 receive the 3 pin uCLK that send out module nRF905, the 4 pin P1.7OCC of single-chip microcomputer U1 receive the 6 pin CD that send out module nRF905, the 1 pin P2.0OCB of single-chip microcomputer U1 receives the 7 pin AM that send out module nRF905, the 2 pin P2.1OCD of single-chip microcomputer U1 receive the 8 pin DR that send out module nRF905, the 13 pin P2.2MOSI of single-chip microcomputer U1 receive the 10 pin MOSI that send out module nRF905, the 14 pin P2.3MISO of single-chip microcomputer U1 receive the 11 pin MISO that send out module nRF905, the 15 pin P2.4SS of single-chip microcomputer U1 receive the 12 pin SCK that send out module nRF905, the 16 pin P2.5UCLK of single-chip microcomputer U1 receive the 13 pin CSN that send out module nRF905, receive the 20 pin ANT1 that send out module nRF905,21 pin ANT1 external antennas, the external crystal oscillator of 14 pin XC115 pin XC2.When transceiver module nRF905 pin TRXCE1 is high, TXEN32 when low, transceiver module nRF905 enters receptive pattern; Behind the standby mode conversion 650uS, transceiver module nRF905 constantly monitors, and waits for and accepts data; When transceiver module nRF905 detected the carrier wave of same frequency range, pin 6 carrier detects set high; When receiving an address that is complementary, pin 7 is set high; When a correct packet received, transceiver module nRF905 removed prefix, address and the CRC check position of packet automatically, then pin 8 is set high; Single-chip microcomputer U1 sets low the TRXCE1 pin, and transceiver module nRF905 enters idle pulley; The internal storage of transceiver module nRF905 moves on to data in the single-chip microcomputer U1, so when data accept complete, transceiver module nRF905 sets low DR pin 8 and AM pin 7, and transceiver module nRF905 can enter into receiving mode, sending mode or shutdown mode this moment.The 27 pin P2.6OCA contact resistance device R21 of single-chip microcomputer U1 and 1 pin of contact switch JP4, resistor connects positive source, 3 pin of contact switch JP4 connect power cathode, the 28 pin P2.7UCA contact resistance devices of single-chip microcomputer U1 and 1 pin of contact switch JP5, resistor R3 connects positive source, 3 pin of contact switch JP5 connect power cathode, by pressing two contact switch JP4, JP5 enquiry of historical data with hand, can show pressure data with metric standard value by display module JP1, and can show parameters such as receiving number of times and time by programming Control.
Claims (2)
1. coal-bed gas pressure measuring instrument, it is characterized in that: it is made of the signal projector (1) and the Portable movable receiver (2) in the tunnel that are located in the coal seam, wherein: signal projector (1) is by pressure transmitter (3), and the A/D converter (4), single-chip microcomputer (5) and the transceiver module (6) that are linked in sequence with pressure transmitter (3) consist of; Portable movable receiver (2) is made of be linked in sequence single-chip microcomputer (5) and display module (7) of transceiver module (6); The amplifying circuit that described pressure transmitter (3) is comprised of constant-current source U5 and integrated amplifier U3 and the STI100 type pressure sensor that is plugged on the single contact pin JP1 consist of; The model of described A/D converter (4) is MAX1240; The model of described single-chip microcomputer (5) is LPC932; The model of described transceiver module (6) is nRF905; The model of described display module (7) is the array 1602 of 3V operating voltage.
2. method for measuring gas pressure of coal bed of analyzer as claimed in claim 1 is characterized in that:
A. with drill bit rock (Y) is bored an aperture towards the coal seam direction first, until get into till the coal seam (M);
B. signal projector (1) is inserted the aperture bottom;
C carries out reaming greater than the drill bit of small-bore about 40% to aperture with the aperture, and reaming degree of depth l is about 2 meters;
D. sealing of hole is carried out in reaming, stop gas excessive;
E. Portable movable receiver (2) is located near the drilling and sealing position, tunnel (H), can receives the data that signal projector (1) sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102432540A CN101440707B (en) | 2008-12-19 | 2008-12-19 | Coal-bed gas pressure measuring instrument and measuring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102432540A CN101440707B (en) | 2008-12-19 | 2008-12-19 | Coal-bed gas pressure measuring instrument and measuring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101440707A CN101440707A (en) | 2009-05-27 |
| CN101440707B true CN101440707B (en) | 2013-03-06 |
Family
ID=40725292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102432540A Expired - Fee Related CN101440707B (en) | 2008-12-19 | 2008-12-19 | Coal-bed gas pressure measuring instrument and measuring method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101440707B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230375B (en) * | 2011-06-10 | 2014-05-14 | 中国矿业大学 | Method for monitoring coal bed gas parameter in real time |
| CN103015984A (en) * | 2012-12-19 | 2013-04-03 | 河南焦煤能源有限公司科学技术研究所 | Method for measuring gas pressure of coal seam by casing high-pressure hole sealing method |
| CN106894785A (en) * | 2017-03-10 | 2017-06-27 | 河南工程学院 | Easy gushing water coal seam upward hole gas pressure measurement method |
| CN107524435A (en) * | 2017-10-09 | 2017-12-29 | 开滦(集团)有限责任公司技术中心 | Aqueous determination of coal seam gas pressure device and assay method |
| CN108645556A (en) * | 2018-08-12 | 2018-10-12 | 西南大学 | A kind of tractor resistance detection device |
| CN113356831B (en) * | 2021-06-02 | 2023-05-12 | 煤炭科学技术研究院有限公司 | Coal seam gas outburst parameter determination method and device, electronic equipment and storage medium |
| CN113464122A (en) * | 2021-06-23 | 2021-10-01 | 中国矿业大学 | Method for improving gas pressure determination accuracy through auxiliary drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414846A (en) * | 1982-02-09 | 1983-11-15 | Jack Schrenkel | Gas well monitoring device |
| CN87215192U (en) * | 1987-12-18 | 1988-08-31 | 湖南省煤炭科学研究所 | Device for measuring gas pressure of coal bed by drilling hole |
| CN1786422A (en) * | 2005-11-29 | 2006-06-14 | 李铁顺 | Method and system for monitoring gas in mine |
| US7353869B2 (en) * | 2004-11-04 | 2008-04-08 | Schlumberger Technology Corporation | System and method for utilizing a skin sensor in a downhole application |
| CN201277061Y (en) * | 2008-10-18 | 2009-07-22 | 中国矿业大学 | Coal-bed gas pressure determinator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680853Y (en) * | 2004-02-24 | 2005-02-23 | 刘光汉 | Down-hole dynamic monitoring electronic short piece |
-
2008
- 2008-12-19 CN CN2008102432540A patent/CN101440707B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414846A (en) * | 1982-02-09 | 1983-11-15 | Jack Schrenkel | Gas well monitoring device |
| CN87215192U (en) * | 1987-12-18 | 1988-08-31 | 湖南省煤炭科学研究所 | Device for measuring gas pressure of coal bed by drilling hole |
| US7353869B2 (en) * | 2004-11-04 | 2008-04-08 | Schlumberger Technology Corporation | System and method for utilizing a skin sensor in a downhole application |
| CN1786422A (en) * | 2005-11-29 | 2006-06-14 | 李铁顺 | Method and system for monitoring gas in mine |
| CN201277061Y (en) * | 2008-10-18 | 2009-07-22 | 中国矿业大学 | Coal-bed gas pressure determinator |
Non-Patent Citations (1)
| Title |
|---|
| 孟燕等.煤层瓦斯压力测定方式及新的探索.《能源技术与管理》.2009,(第6期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101440707A (en) | 2009-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101440707B (en) | Coal-bed gas pressure measuring instrument and measuring method thereof | |
| CN201857960U (en) | Device for directly measuring content of gas | |
| CN103149917B (en) | Hydraulic safety monitoring system based on wireless sensor network | |
| CN201277062Y (en) | Mine water trouble monitoring and intelligent early-warning system | |
| CN205049213U (en) | Multi -functional groundwater monitoring devices of buoy type | |
| CN102128765A (en) | Method for directly and rapidly measuring coal seam gas content in underground coal mine | |
| CN1288455C (en) | Real time monitoring forecasting device of coal rock dynamic disaster and forecasting method | |
| CN205936594U (en) | Three -dimensional geological data gathers portable equipment with transmission | |
| CN201583519U (en) | Wireless monitoring device for monitoring spontaneous combustion of coals in goaf | |
| CN105350952A (en) | Intelligent drilling track measuring device and method | |
| CN101655183A (en) | Land marking method and land making system of pipe interior detector | |
| CN201549002U (en) | Electronic logging device of geological drilling information | |
| CN204924842U (en) | Portable mining blow detector | |
| CN201277061Y (en) | Coal-bed gas pressure determinator | |
| CN206144551U (en) | Water pressure test in borehole system | |
| CN202348268U (en) | High-precision fracturing electronic pressure gauge | |
| CN201417146Y (en) | Digital direction finder | |
| CN207598293U (en) | The monitoring of mine working face water burst, prediction meanss | |
| CN204142623U (en) | A kind of mining gas sensor device | |
| CN206888039U (en) | A kind of automatic pile measurement device of low strain dynamic formula for architectural engineering detection | |
| CN203499679U (en) | Online detection device for natural gamma information of rock debris | |
| CN208795621U (en) | The prominent detector of intelligent gas based on STM32 | |
| CN203035191U (en) | Drilling pressure measuring device | |
| CN2510865Y (en) | Electromagnetic radiation monitoring device for coal rock dynamic disaster | |
| CN204439854U (en) | A kind of fall of ground detection instrument for hidden peril |
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: 20130306 Termination date: 20181219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |