CN105114057A - System and method for intelligently detecting sealing quality of gas drainage borehole - Google Patents

System and method for intelligently detecting sealing quality of gas drainage borehole Download PDF

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Publication number
CN105114057A
CN105114057A CN201510466843.5A CN201510466843A CN105114057A CN 105114057 A CN105114057 A CN 105114057A CN 201510466843 A CN201510466843 A CN 201510466843A CN 105114057 A CN105114057 A CN 105114057A
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China
Prior art keywords
gas
sealing quality
flow sensor
gas flow
pressure
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CN201510466843.5A
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Chinese (zh)
Inventor
刘春�
周福宝
叶高榜
宋小林
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201510466843.5A priority Critical patent/CN105114057A/en
Publication of CN105114057A publication Critical patent/CN105114057A/en
Pending legal-status Critical Current

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Abstract

Disclosed are a system and a method for intelligently detecting sealing quality of a gas drainage borehole. A left end of a pipeline (2) is communicated with an inflating pump (1), a control valve (3), a first gas flow sensor (4) and a gas pressure sensor (5) are disposed in the middle of the pipeline sequentially from left to right, a right end of the pipeline (2) is connected with a drainage pipe (12) in the gas drainage borehole (13) already sealed, the inflating pump (1), the first gas flow sensor (4) and the gas pressure sensor (5) are connected with an intelligent controller (6) through a connecting line (8), and the intelligent controller (6) is connected with a display (7). The front end of the borehole is provided with a sealed segment (11), a second gas flow sensor (10) is disposed on the outer wall of the drainage pipe (12) on the right side of the sealed segment (11), and the second gas flow sensor is connected with the intelligent controller (6) through a connecting line. The system is simple to operate and convenient to move and allows required data to be automatically detected efficiently and quickly.

Description

A kind of system of Intelligent Measurement mash gas pumping drilling sealing quality and detection method
Technical field
The present invention relates to a kind of system detecting drilling quality, specifically a kind of system of Intelligent Measurement mash gas pumping drilling sealing quality, belongs to drilling quality detection technique field.
Background technology
Coal bed gas extraction is one of technical measures of control coal and gas prominent, at home and abroad be widely used in mine, by the important means that construction drill draining coal seam gas is colliery improvement Gas Disaster, and the sealing quality of extraction borehole is one of key factor affecting extraction efficiency.The sealing quality of drainage from coal seam boring judges according to mash gas extraction concentration in gas pumping process mostly, and this determination time is about 15 days to about 30 days, and decision procedure is comparatively passive.If judge, sealing quality difference just needs sealing of hole again, has both affected manufacturing schedule and the economic benefit of coal enterprise, also produces safety in production and threatens.At present, to detecting, specializing in of mash gas pumping drilling sealing quality is relatively less, the method of some the detection mash gas pumping drilling sealing qualities proposed, the artificial reading of many dependence, discriminant criterion is too single, the discrimination model of shortage science and accurate intelligent analysis system, be difficult to large-scale promotion in actual applications.
Chinese invention patent discloses " a kind of method and apparatus checking mash gas pumping drilling airtight quality " that a kind of publication number is CN102680187A on September 19th, 2012, propose and utilize coal mine to press down wind to be filled with boring, borehole sealing is detected by artificial observed pressure change, but gas leakage index only relies on pressure, does not consider flow of holing; No. 30, Chinese invention patent 2013 01 month discloses " detection method of coal bed gas extraction borehole sealing quality and Gas leak position " that a kind of publication number is CN102900428A, propose and utilize sound-pipe to stretch into boring, by holing, interior diverse location gas density, extraction negative pressure etc. judge borehole sealing quality, the method complicated operation, and must detect under boring negative pressure extraction condition, comparatively passive; Meanwhile, both lack reasonably intelligence gas leakage discrimination model, science can not differentiate the gas leakage situation in boring whole extraction cycle (especially extraction initial stage and extraction later stage) targetedly.
Summary of the invention
The object of this invention is to provide a kind of system of Intelligent Measurement mash gas pumping drilling sealing quality, this Dynamic System is simple, conveniently moving, can real time automatic detection desired data, without the need to relying on underground coal mine wind regime, can in the short period of time just can Intelligent Measurement and demonstrate the quality of mash gas pumping drilling sealing of hole, efficient quick.
To achieve these goals, the invention provides a kind of system of Intelligent Measurement mash gas pumping drilling sealing quality, comprise pipeline, the left end of pipeline is communicated with inflator pump, the middle part of pipeline is disposed with control valve, the first gas flow sensor, gas pressure sensor by left-to-right, the right-hand member of pipeline is connected with the drainage tube in the mash gas pumping drilling sealed, inflator pump, the first gas flow sensor, gas pressure sensor are connected with intelligent controller through connecting line, and intelligent controller is connected with display; The front end of boring is provided with sealing of hole section, and the outer wall of the drainage tube on the right side of sealing of hole section is provided with the second gas flow sensor, the second gas flow sensor is connected with intelligent controller by connecting line.
Further, also comprise fast-wiring head, the connecting line be connected with the second gas flow sensor passes drainage tube and is connected with one end of described fast-wiring head, and the other end of fast-wiring head is connected with intelligent controller by connecting line.
A detection method for Intelligent Measurement mash gas pumping drilling sealing quality, comprises the following steps:
1. closed control valve, the outlet pressure arranging inflator pump is P 0;
2. control valve is opened, with outlet pressure P 0to boring insufflation gas, inflationtime is T;
3. sealing quality Intelligent Recognition function carries out initial decision according to changes in flow rate situation to sealing quality: if after T time, the flow Q>=Q at the first gas flow sensor place 0, judge that drilling and sealing quality is as difference, and show on display, terminate to judge, intelligent controller controls inflator pump reversion, and gas bleeding, unloads system;
If after 4. inflating T time, the As time goes on flow Q < Q at the first gas flow sensor place 0, closed control valve, observe the situation of gas pressure sensor place pressure:
The pressure that intelligent controller monitors according to gas pressure sensor place, with gas pressure sensor initial pressure P after closed control valve 1contrast, carries out secondary judgement to sealing quality: gas pressure sensor place pressure P>=90%P 1, then judge that sealing quality is as excellent; Pressure 50%P 1≤ P≤90%P 1, then judge that sealing quality is as good; Pressure P≤50%P 1, then judge that sealing quality is as difference; And show on display, terminate to judge, intelligent controller controls inflator pump reversion, and gas bleeding, unloads system.
Also comprise late detection, hole pumping and mining T 2after, T 2>30d, system is connected with the second gas flow sensor of drainage tube outer wall in boring through fast-wiring head, and intelligent controller analyzes the reading Q of the second gas flow sensor 2with the initial reading Q of the second gas flow sensor 1if meet Q 2>=10%Q 1, then think that borehole sealing quality is for poor; Otherwise, think that borehole sealing quality is excellent, and show on display, terminate to judge, unload system.
Described sealing quality intelligent recognition model is:
In formula: T---between system works, min;
Q---gas flow sensor I flow, m 3/ h;
Q 0---according to the differentiation flow that boring volume is arranged, m 3/ h;
T 1---dwell time in boring after closed control valve, min;
P---gas pressure sensor reading, Mpa;
P 1---gas pressure sensor initial reading after closed control valve, Mpa;
T 2---hole pumping and mining time, d;
Q 1---the initial reading of the second gas flow sensor II, m 3/ h;
Q 2---the second gas flow sensor II reading, m 3/ h;
Compared with prior art, the feeder that the present invention utilizes system to carry, can easily for system provides wind regime, can the flow of real-time detecting system and pressure by gas flow sensor and gas pressure sensor, fast and accurately, intelligent processing system judges monitor data according to sealing quality model of cognition, and shows result over the display, can avoid the error brought because manual operation is inaccurate.By making to be provided with gas flow sensor II in boring, after extraction a period of time, the quality of airtight quality only just can intuitively and rapidly can be judged by gas flow sensor II and stand alone display.
Accompanying drawing explanation
Fig. 1 is operating diagram of the present invention.
In figure: 1, inflator pump, 2, pipeline, 3, control valve, the 4, first gas flow sensor, 5, gas pressure sensor, 6, intelligent controller, 7, display, 8, connecting line, 9, fast-wiring head, 10, the second gas flow sensor, 11, sealing of hole section, 12, drainage tube, 13, boring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of system of Intelligent Measurement mash gas pumping drilling sealing quality, comprise pipeline 2, the left end of pipeline 2 is communicated with inflator pump 1, the middle part of pipeline 2 is disposed with control valve 3, first gas flow sensor 4, gas pressure sensor 5 by left-to-right, the right-hand member of pipeline 2 is connected with the drainage tube 12 in the mash gas pumping drilling 13 sealed, inflator pump 1, first gas flow sensor 4, gas pressure sensor 5 are connected with intelligent controller 6 through connecting line 8, and intelligent controller 6 is connected with display 7; The front end of boring 13 is provided with sealing of hole section 11, the outer wall of the drainage tube 12 on the right side of sealing of hole section 11 is provided with the second gas flow sensor 10, second gas flow sensor 10 and is connected with intelligent controller 6 by connecting line 8.
Also comprise fast-wiring head 9, the connecting line be connected with the second gas flow sensor 10 passes drainage tube 12 and is connected with one end of described fast-wiring head 9, the other end of fast-wiring head 9 is connected with intelligent controller 6 by connecting line 8, fast-wiring head 9 the installation and removal that can facilitate display 7 and the second gas flow sensor 10 are set.
A detection method for Intelligent Measurement mash gas pumping drilling sealing quality, is characterized in that, comprise the following steps:
1. closed control valve 3, the outlet pressure arranging inflator pump 1 is P 0;
2. control valve 3 is opened, with outlet pressure P 0to boring 13 insufflation gas, inflationtime is T;
3. sealing quality Intelligent Recognition function carries out initial decision according to changes in flow rate situation to sealing quality: if after T time, the flow Q>=Q at the first gas flow sensor 4 place 0, judge that drilling and sealing quality is as difference, and show on display 7, terminate to judge, intelligent controller 6 controls inflator pump reversion, and gas bleeding, unloads system;
If after 4. inflating T time, the As time goes on flow Q < Q at the first gas flow sensor 4 place 0, closed control valve 3, observe the situation of change of gas pressure sensor 5 place pressure:
The pressure that intelligent controller 6 monitors according to gas pressure sensor 5 place, with gas pressure sensor 5 initial pressure P after closed control valve 3 1contrast, carries out secondary judgement to sealing quality: gas pressure sensor 5 place pressure P>=90%P 1, then judge that sealing quality is as excellent; Pressure 50%P 1≤ P≤90%P 1, then judge that sealing quality is as good; Pressure P≤50%P 1, then judge that sealing quality is as difference; And show on display 7, terminate to judge, intelligent controller 6 controls inflator pump reversion, and gas bleeding, unloads system.
Also comprise late detection, hole 13 extraction T 2after, T 2>30d, system is connected with the second gas flow sensor 10 of drainage tube 12 outer wall in boring 13 through fast-wiring head 9, and intelligent controller 6 analyzes the reading Q of the second gas flow sensor 10 2with the initial reading Q of the second gas flow sensor 10 1if meet Q 2>=10%Q 1, then think that borehole sealing quality is for poor; Otherwise, think that borehole sealing quality is excellent, and show on display 7, terminate to judge, unload system.
Sealing quality intelligent recognition model is:
In formula: T---between system works, min;
Q---gas flow sensor I flow, m 3/ h;
Q 0---according to the differentiation flow that boring volume is arranged, m 3/ h;
T1---dwell time in boring after closed control valve, min;
P---gas pressure sensor reading, Mpa;
P1---gas pressure sensor initial reading after closed control valve, Mpa;
T2---hole pumping and mining time, d;
Q1---the initial reading of the second gas flow sensor II, m 3/ h;
Q2---the second gas flow sensor II reading, m 3/ h;
Outlet pressure is P 0≤ 0.3MPa, is filled with boring 13 for preventing excess pressure and destroys sealing of hole section 11, can by the outlet pressure P of inflator pump 1 0be set to 0.3MPa.
Embodiment
(1) closed control valve 3, arranging inflator pump 1 outlet pressure is P 0≤ 0.3MPa, prevents excess pressure to be filled with boring and destroys sealing of hole section 11;
(2) open control valve 3, by inflator pump 1 through pipeline 2 to boring 13 insufflation gas, keep the blowing pressure P 0≤ 0.3MPa, inflationtime is about 3min;
(3) sealing quality Intelligent Recognition function carries out initial decision according to changes in flow rate situation to sealing quality: if after 3min, the flow Q>=6m at the first gas flow sensor 4 place 3/ h, judges that drilling and sealing quality is as difference, and shows on display 7, terminates to judge, intelligent controller 6 controls inflator pump reversion, and gas bleeding, unloads system;
(4) if after inflation 3min, the As time goes on flow Q < 6m at the first gas flow sensor 4 place 3/ h, closed control valve 3, observes the situation of change of gas pressure sensor 5 place pressure;
(5) pressure that monitors according to gas pressure sensor 5 place of intelligent controller 6, with gas pressure sensor 5 initial pressure P after closed control valve 3 1contrast, carries out secondary judgement to sealing quality: gas pressure sensor 5 place pressure P>=90%P 1, then judge that sealing quality is as excellent; Pressure 50%P 1≤ P≤90%P 1, then judge that sealing quality is as good; Pressure P≤50%P 1, then judge that sealing quality is as difference; And show on display 7, terminate to judge, intelligent controller 6 controls inflator pump reversion, and gas bleeding, unloads system.
Hole 13 extraction T 2after, T 2>30d, system is connected with the second gas flow sensor 10 of drainage tube 12 outer wall in boring 13 through fast connector lug 9, and intelligent controller 6 analyzes the reading Q of the second gas flow sensor 10 2with the initial reading Q of the second gas flow sensor 10 1if meet Q 2>=10%Q 1, then think that borehole sealing quality is for poor; Otherwise, think that borehole sealing quality is excellent, and show on display 7, terminate to judge, unload system.
This system intelligence is flexible, simple to operate, conveniently moving, detect one boring time less, reliable results, practicality is high.

Claims (5)

1. the system of an Intelligent Measurement mash gas pumping drilling sealing quality, comprise pipeline (2), the left end of pipeline (2) is communicated with inflator pump (1), the middle part of pipeline (2) is disposed with control valve (3) by left-to-right, first gas flow sensor (4), gas pressure sensor (5), the right-hand member of pipeline (2) is connected with the drainage tube (12) in the mash gas pumping drilling sealed (13), it is characterized in that: inflator pump (1), first gas flow sensor (4), gas pressure sensor (5) is connected with intelligent controller (6) through connecting line (8), intelligent controller (6) is connected with display (7), the front end of boring (13) is provided with sealing of hole section (11), the outer wall of the drainage tube (12) on sealing of hole section (11) right side is provided with the second gas flow sensor (10), and the second gas flow sensor (10) is connected with intelligent controller (6) by connecting line (8).
2. the system of a kind of Intelligent Measurement mash gas pumping drilling sealing quality according to claim 1, it is characterized in that, also comprise fast-wiring head (9), the connecting line be connected with the second gas flow sensor (10) passes drainage tube (12) and is connected with one end of described fast-wiring head (9), and the other end of fast-wiring head (9) is connected with intelligent controller (6) by connecting line (8).
3. a detection method for Intelligent Measurement mash gas pumping drilling sealing quality, is characterized in that, comprises the following steps:
1. closed control valve (3), the outlet pressure arranging inflator pump (1) is P 0;
2. control valve (3) is opened, with outlet pressure P 0to boring (13) insufflation gas, inflationtime is T;
3. sealing quality Intelligent Recognition function carries out initial decision according to changes in flow rate situation to sealing quality: if after T time, the flow Q>=Q at the first gas flow sensor (4) place 0, judge that drilling and sealing quality is as difference, and in the upper display of display (7), terminate to judge, intelligent controller (6) controls inflator pump reversion, and gas bleeding, unloads system;
If after 4. inflating T time, the As time goes on flow Q < Q at the first gas flow sensor (4) place 0, closed control valve (3), observe the situation of change of gas pressure sensor (5) place pressure:
The pressure that intelligent controller (6) monitors according to gas pressure sensor (5) place, with closed control valve (3) gas pressure sensor (5) initial pressure P afterwards 1contrast, carries out secondary judgement to sealing quality: gas pressure sensor (5) place pressure P>=90%P 1, then judge that sealing quality is as excellent; Pressure 50%P 1≤ P≤90%P 1, then judge that sealing quality is as good; Pressure P≤50%P 1, then judge that sealing quality is as difference; And in the upper display of display (7), terminate to judge, intelligent controller (6) controls inflator pump reversion, and gas bleeding, unloads system.
4. the detection method of a kind of Intelligent Measurement mash gas pumping drilling sealing quality according to claim 3, is characterized in that, also comprise late detection, boring (13) extraction T 2after, T 2>30d, system is connected with second gas flow sensor (10) of drainage tube (12) outer wall in boring (13) through fast-wiring head (9), and intelligent controller (6) analyzes the reading Q of the second gas flow sensor (10) 2with the initial reading Q of the second gas flow sensor (10) 1if meet Q 2>=10%Q 1, then think that borehole sealing quality is for poor; Otherwise, think that borehole sealing quality is excellent, and in the upper display of display (7), terminate to judge, unload system.
5. the detection method of the system of a kind of Intelligent Measurement mash gas pumping drilling sealing quality according to claim 4, it is characterized in that, described sealing quality intelligent recognition model is:
In formula: T---between system works, min;
Q---gas flow sensor I flow, m 3/ h;
Q 0---according to the differentiation flow that boring volume is arranged, m 3/ h;
T1---dwell time in boring after closed control valve, min;
P---gas pressure sensor reading, Mpa;
P1---gas pressure sensor initial reading after closed control valve, Mpa;
T2---hole pumping and mining time, d;
Q1---the initial reading of the second gas flow sensor II, m 3/ h;
Q2---the second gas flow sensor II reading, m 3/ h.
CN201510466843.5A 2015-07-31 2015-07-31 System and method for intelligently detecting sealing quality of gas drainage borehole Pending CN105114057A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106057061A (en) * 2016-08-17 2016-10-26 西安科技大学 Laboratory simulation system and method for coal mine gas extraction boring leakage position detection
CN107101787A (en) * 2017-05-26 2017-08-29 中国矿业大学 A kind of mash gas pumping drilling device for detecting sealability and detection method
CN113107466A (en) * 2021-04-08 2021-07-13 煤炭科学研究总院 Gas extraction drilling and hole sealing quality detection device and using method thereof
CN113107460A (en) * 2021-04-08 2021-07-13 煤炭科学研究总院 Intelligent monitoring device for gas extraction drill hole and using method thereof
CN113107460B (en) * 2021-04-08 2022-04-29 煤炭科学研究总院有限公司 Intelligent monitoring device for gas extraction drill hole and using method thereof

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Publication number Priority date Publication date Assignee Title
DE2517342A1 (en) * 1975-04-19 1976-10-28 Bergwerksverband Gmbh MEASURING PROBE
CN102230375A (en) * 2011-06-10 2011-11-02 中国矿业大学 Method and device for monitoring coal bed gas parameter in real time
CN102242629A (en) * 2010-05-14 2011-11-16 淮南矿业(集团)有限责任公司 Coal bed gas pressure detection system
CN102680187A (en) * 2012-05-25 2012-09-19 中国矿业大学 Method and equipment for checking sealing quality of gas extraction drilled holes
CN103644940A (en) * 2013-12-11 2014-03-19 安徽理工大学 Coal seam gas pressure, gas flow and crustal stress monitoring device and monitoring method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517342A1 (en) * 1975-04-19 1976-10-28 Bergwerksverband Gmbh MEASURING PROBE
CN102242629A (en) * 2010-05-14 2011-11-16 淮南矿业(集团)有限责任公司 Coal bed gas pressure detection system
CN102230375A (en) * 2011-06-10 2011-11-02 中国矿业大学 Method and device for monitoring coal bed gas parameter in real time
CN102680187A (en) * 2012-05-25 2012-09-19 中国矿业大学 Method and equipment for checking sealing quality of gas extraction drilled holes
CN103644940A (en) * 2013-12-11 2014-03-19 安徽理工大学 Coal seam gas pressure, gas flow and crustal stress monitoring device and monitoring method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106057061A (en) * 2016-08-17 2016-10-26 西安科技大学 Laboratory simulation system and method for coal mine gas extraction boring leakage position detection
CN106057061B (en) * 2016-08-17 2018-07-17 西安科技大学 Coal mine gas extraction drill hole Gas leak position testing laboratory's simulation system and method
CN107101787A (en) * 2017-05-26 2017-08-29 中国矿业大学 A kind of mash gas pumping drilling device for detecting sealability and detection method
CN107101787B (en) * 2017-05-26 2019-07-26 中国矿业大学 A kind of mash gas pumping drilling device for detecting sealability and detection method
CN113107466A (en) * 2021-04-08 2021-07-13 煤炭科学研究总院 Gas extraction drilling and hole sealing quality detection device and using method thereof
CN113107460A (en) * 2021-04-08 2021-07-13 煤炭科学研究总院 Intelligent monitoring device for gas extraction drill hole and using method thereof
CN113107466B (en) * 2021-04-08 2022-04-08 煤炭科学研究总院有限公司 Gas extraction drilling and hole sealing quality detection device and using method thereof
CN113107460B (en) * 2021-04-08 2022-04-29 煤炭科学研究总院有限公司 Intelligent monitoring device for gas extraction drill hole and using method thereof

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Application publication date: 20151202