CN204552819U - Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system - Google Patents
Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system Download PDFInfo
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- CN204552819U CN204552819U CN201520164732.4U CN201520164732U CN204552819U CN 204552819 U CN204552819 U CN 204552819U CN 201520164732 U CN201520164732 U CN 201520164732U CN 204552819 U CN204552819 U CN 204552819U
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- steel pipe
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- seamless steel
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Abstract
The utility model discloses a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system, it comprises stope gas sample instrument and monitoring base station, stope gas sample instrument comprises movable sleeve pipe, top tray and lower tray, movable sleeve pipe is connected together by upper and lower two seamless steel pipes and is formed, by the rectangular-shaped breach of arranged outside at upper seamless steel pipe and lower seamless steel pipe, and two rectangular-shaped breach point-blank, sampling steel pipe is laid with in rectangular-shaped breach, the inside of sampling steel pipe is divided into three sealed cavities in interval from bottom to top uniformly, one group of monitoring line is laid with in each sealed cavity, monitoring line is connected with base station, can gas and temperature value in Real-Time Monitoring goaf, the length of lower tray is greater than the length of top tray, can increase the stability of gas sample instrument, and improve the accuracy rate measured, the utility model is simple, device reliability is strong.
Description
Technical field
The utility model belongs to coal mine gas and coal spontaneous combustion coupling disaster Prevention Technique field, is specifically related to a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system.
Background technology
Along with the exploitation that China is intensive to energy high strength, superficial part resource reduces day by day, and domestic and international mine enters deep resource mining phase in succession.The mechanical characteristics of deep coal and rock is more complicated, and coal petrography crushing is large, for spontaneous combustion of coal provides good oxygen, accumulation of heat condition; Simultaneously, along with the increase of mining depth, pit mining gas flowing in coal layer and geothermal gradient also sharply increase, the existence of high methane content band and methane accumulation band and motion, it is the key factor of mine generation gas explosion, pyrophoricity accident, and coal spontaneous combustion to be gas explosion provide burning things which may cause a fire disaster condition, the coupling symbiotic of two kinds of disasters, become the universal pattern that mine severe and great casualty occurs.
Determine that coupling disaster deathtrap is the key of this kind of diaster prevention and control, and coupling disaster has spatiality, monitor owing to lacking effective monitoring means to its space multistory regularity of distribution, can not well guide field diaster prevention and control work.At present, also directly do not monitor goaf space gases and Temperature Distribution instrument and equipment, be all carry out pipe laying observation on two crossheading directions in the past, and produce simple change curve with Excel, can not show goaf coupling disaster distribution from space multistory.
Utility model content
The purpose of this utility model is to provide a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system, can real-time collecting goaf space gases and temperature value by this system, utilize monitored data to obtain stope gas and coal spontaneous combustion coupling disaster space multistory distribution.
Its technical solution comprises:
A kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system, it comprises stope gas sample instrument and monitoring base station, described stope gas sample instrument comprises movable sleeve pipe, be positioned at the top tray of described cannula tip and be positioned at the lower tray of described casing shoe, described movable sleeve pipe is connected together by upper and lower two seamless steel pipes and is formed, the outside of described upper seamless steel pipe and lower seamless steel pipe is provided with a rectangular-shaped breach, article two, rectangular-shaped breach point-blank, sampling steel pipe is laid with in described rectangular-shaped breach, described sampling steel pipe is hollow-core construction, in the inside of described sampling steel pipe, interval is divided into three sealed cavities uniformly from bottom to top, one group of monitoring line is laid with in described each sealed cavity, often group monitoring line is all made up of the beam tube be fixed together and thermometric line,
The length of described lower tray is greater than the length of top tray, and described movable inside pipe casing is provided with spring, and described lower tray is provided with pressure sensor, and the top of described spring withstands in described top tray, and bottom withstands on described pressure sensor;
Described monitoring base station is divided into for the base station one of monitoring pressure and the base station two for monitoring gas sample and temperature, and described pressure sensor is connected to described base station one, and described monitoring line is connected to described base station two.
As a preferred version of the present utility model, the internal diameter 6mm larger than the internal diameter of lower seamless steel pipe of upper seamless steel pipe, when work plane is pressed, top tray forced compression spring, also the relative motion that rubs can be there is, the experimental data standard more of this internal diameter difference analog monitoring between upper seamless steel pipe and lower seamless steel pipe.
As another preferred version of the present utility model, above-mentioned spring is high-strength spring, to adapt to larger pressure.
The utility model is by the rectangular-shaped breach of arranged outside at upper seamless steel pipe and lower seamless steel pipe, and two rectangular-shaped breach point-blank, sampling steel pipe is laid with in rectangular-shaped breach, the inside of sampling steel pipe is divided into three sealed cavities in interval from bottom to top uniformly, one group of monitoring line is laid with in each sealed cavity, monitoring line is connected with base station, can gas and temperature value in Real-Time Monitoring goaf; The length of lower tray is greater than the length of top tray, the stability of gas sample instrument can be increased, ensure that stope gas sample instrument erectility is the important guarantee ensureing to measure accuracy, in use, upper and lower seamless steel pipe slides by under the pressure effect of ore deposit, and spring can compress, by the change of pressure sensor readings, judge the erectility of instrument, if the pressure data disappearance obtained or appearance are extremely, then judge that this measuring point is as invalid measuring point.
The utility model changes tradition and measures the pattern in goaf by pipe laying after two crossheadings and hydraulic support, the stope gas sample instrument of design can be needed directly to be placed in goaf according to layout, thus can real-time collecting goaf gas and temperature information; And stope gas sample instrument can directly measure space, goaf differing heights as required; The utility model is simple, device reliability is strong, technique is relatively simple, has certain compliance, have practicality widely to different coal working thickness.
The utility model easy construction is easy, technique is relatively simple, manually settles sampling instrument to goaf by the gap of hydraulic support, can realize the method observation of layouting along work plane completely, have good compliance to coal seam thickness fully mechanized coal face in 6m.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the utility model:
Fig. 1 is the utility model monitoring system structural representation;
Fig. 2 is the top view of lower seamless steel pipe;
Fig. 3 is the rectangular-shaped barbed portion structural representation of lower seamless steel pipe;
In figure, 1-base station one; 2-base station two; 3-pressure sensor circuit; 4-monitoring line; 5-top tray; 6-lower tray; 7-displacement transducer; 8-samples steel pipe; 9-spring; 10-lower seamless steel pipe; 11-pressure sensor; 12-rectangular-shaped breach.
Detailed description of the invention
The utility model discloses a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system, in order to make advantage of the present utility model, technical scheme clearly, clearly, below in conjunction with specific embodiment, the utility model being described further.
As shown in Figure 1 to Figure 3, the utility model monitoring system comprises stope gas sample instrument and monitoring base station, as can be seen from Figure 1, the main body of stope gas sample instrument to be connected together the sleeve pipe formed by two upper seamless steel pipes varied in size and lower seamless steel pipe 10, and the top of this sleeve pipe is installed on top tray 5, bottom is lower tray 6, goaf overburden pressure directly acts in top tray 5, the inside of sleeve pipe is provided with spring 9, be preferably high strong spring, to adapt to the different pressures of overlying rock, in lower tray, namely sleeve bottom is provided with pressure sensor 11, monitoring base station is connected to by pressure sensor circuit 3,
Rectangular-shaped breach 12 is provided with in the outside of upper seamless steel pipe and lower seamless steel pipe, sampling steel pipe 8 can be installed in its inside, sampling steel pipe 8 inside is hollow-core construction, mainly in order to lay monitoring line therein, this sampling steel duct is provided with three groups of monitoring lines 4 uniformly along interval in short transverse, often group monitoring line is all made up of the beam tube be fixed together and thermometric line, often group monitoring line is all connected to monitoring base station, three apertures are provided with uniformly at sampling steel duct interval, pass through for monitoring line, first one group of monitoring line of sampling steel pipe top is installed, it is through the bottom of sampling steel pipe, the top of sampling steel pipe is penetrated by aperture, penetrate the monitoring line of middle part and bottom more successively, after installation, aperture resin material is sealed, form sealed cavity, each aperture is all by resin material sealing formation sealed cavity, beam tube and thermometric line are connected respectively in monitoring base station, the preferred thermometric line of the utility model is armored temperature measuring line, beam tube is armouring polyvinyl bundle tube for mine.
The utility model monitoring base station is divided into two, base station 1 and base station 22 respectively, base station 1 is connected with pressure sensor 11 and displacement transducer 7, for monitoring pressure and displacement information, base station 22 is connected with beam tube and thermometric line, for monitoring stope goaf gas concentration, i.e. spontaneous combustion index gas and methane gas concentration.
The length of lower tray 6 is greater than the length of top tray 5, the stability of gas sample instrument can be ensured, ensure that stope gas sample instrument erectility is the important guarantee ensureing to measure accuracy, in use, upper and lower seamless steel pipe slides by under the pressure effect of ore deposit, and spring can compress, by the change of pressure sensor readings, judge the erectility of instrument, if the pressure data disappearance obtained or appearance are extremely, then judge that this measuring point is as invalid measuring point.
Utilize the monitoring method of the utility model monitoring system to goaf gas and coal spontaneous combustion coupling disaster system as follows:
The first step, is divided in the middle part of work plane top, work plane and work plane bottom three part, at the advance of the face to 1/2 First Weighting Interval of Main L by work plane
0time, move towards 5 goaf measuring points are selected in direction along work plane in goaf, include two measuring points of three measuring points of the air return way side of work plane and the air intake crossheading side of work plane; Manually be placed in goaf by stope gas sample instrument by hydraulic support gap, three measuring points of air return way side, the spacing between adjacent measuring point is 1/8L, and wherein L is that work plane moves towards width, and the spacing between two measuring points of air intake crossheading side is 1/4L;
Second step, all stope gas sample instrument are connected to crossheading base station respectively by data wire and armouring beam tube, armored temperature measuring line, and wherein measuring point pressure and displacement information are recorded in base station one, and gas and record measuring point temperature are got in base station two;
3rd step, continues to advance L at work plane
0time, goaf top plate is in press gap, and now ore deposit pressure is relatively little, is beneficial to measuring point and is arranged vertically, and takes identical mode to arrange row's measuring point and a stope sampling instrument in same position, and is connected to crossheading base station respectively;
4th step, screens effective measuring point according to crossheading pressure change numerical value, and records pressure sensor numerical value, displacement transducer sedimentation value, generally can gather once for two days, when running into the comparatively slow or gas exceptions area of face propulsion speed, can gather once for one day, or collection in a day twice; Gather gas sample air bag to collect, and record the numerical value of point position sensor when collecting gas in time, gas sample is taken in time to ground assay;
5th step, collects displacement data, gas sample data and temperature data by base station, both data is averaged, and utilizes mathematical analysis software and bi-cubic interpolation technology, calculates according to the following formula:
In formula, S
efor coupling disaster distributed area,
for meeting the O that disaster occurs
2cONCENTRATION DISTRIBUTION district, S
tfor meeting the humidity province that disaster occurs,
for flammable can quick-fried gas density distributed area; Wherein,
value be 8%,
obtain the distribution of plane coupling disaster;
6th step, by Computerized three-dimensional reconstruction software, the space multistory that reconstruct obtains gas and coal spontaneous combustion coupling disaster distributes.
Claims (3)
1. a colliery stope gas and coal spontaneous combustion coupling disaster monitoring system, it comprises stope gas sample instrument and monitoring base station, described stope gas sample instrument comprises movable sleeve pipe, be positioned at the top tray of described cannula tip and be positioned at the lower tray of described casing shoe, it is characterized in that: described movable sleeve pipe is connected together by upper and lower two seamless steel pipes and formed, the outside of described upper seamless steel pipe and lower seamless steel pipe is provided with a rectangular-shaped breach, article two, rectangular-shaped breach point-blank, sampling steel pipe is laid with in described rectangular-shaped breach, described sampling steel pipe is hollow-core construction, in the inside of described sampling steel pipe, interval is divided into three sealed cavities uniformly from bottom to top, one group of monitoring line is laid with in described each sealed cavity, often group monitoring line is all made up of the beam tube be fixed together and thermometric line,
The length of described lower tray is greater than the length of top tray, and described movable inside pipe casing is provided with spring, and described lower tray is provided with pressure sensor, and the top of described spring withstands in described top tray, and bottom withstands on described pressure sensor;
Described monitoring base station is divided into for the base station one of monitoring pressure and the base station two for monitoring gas sample and temperature, and described pressure sensor is connected to described base station one, and described monitoring line is connected to described base station two.
2. colliery according to claim 1 stope gas and coal spontaneous combustion coupling disaster monitoring system, is characterized in that: the internal diameter 6mm larger than the internal diameter of lower seamless steel pipe of described upper seamless steel pipe.
3. colliery according to claim 1 stope gas and coal spontaneous combustion coupling disaster monitoring system, is characterized in that: described spring is high-strength spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164732.4U CN204552819U (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164732.4U CN204552819U (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system |
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| Publication Number | Publication Date |
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| CN204552819U true CN204552819U (en) | 2015-08-12 |
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| CN201520164732.4U Expired - Fee Related CN204552819U (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775849A (en) * | 2015-03-23 | 2015-07-15 | 山东科技大学 | System and method for monitoring gas and coal spontaneous combustion coupling disasters on coal mine stope |
-
2015
- 2015-03-23 CN CN201520164732.4U patent/CN204552819U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775849A (en) * | 2015-03-23 | 2015-07-15 | 山东科技大学 | System and method for monitoring gas and coal spontaneous combustion coupling disasters on coal mine stope |
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| 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: 20150812 Termination date: 20160323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |