CN104897213A - Sensor for monitoring waste rock pressure and gas parameter in goaf - Google Patents
Sensor for monitoring waste rock pressure and gas parameter in goaf Download PDFInfo
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- CN104897213A CN104897213A CN201510334125.2A CN201510334125A CN104897213A CN 104897213 A CN104897213 A CN 104897213A CN 201510334125 A CN201510334125 A CN 201510334125A CN 104897213 A CN104897213 A CN 104897213A
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Abstract
The invention discloses a sensor for monitoring waste rock pressure and a gas parameter in a goaf. The sensor comprises sensors, an optical cable, a cable, and a computer. Each sensor is composed of an explosion-proof housing, a distributed fiber, a pressure cushion, and a pressure-frequency converter. The pressure cushion converts goaf inbreak waste rock and fissure zone pressure into liquid pressure in the pressure cushion and pressure is converted into a corresponding electric signal by a converter. Then, the electric signal is transmitted to a frequency instrument through the cable in order that the goaf inbreak waste rock and fissure zone pressure is tested. The sizes of the sensors are selected according to the lumpiness of the goaf waste rock. In order to prevent the waste rock from falling to impact the sensor, the sensors are covered with float coal or waste rocks. The sensors are uniformly arranged in the goaf. The optical cable and the cable are protected by steel pipes. The sensors may effectively monitor the gas composition, concentration, and temperature in the goaf, provide accurate data for prevention of fire hazards and gas explosion in the goaf, and effectively monitor the goaf inbreak waste rock and and fissure zone pressure, and contribute to the research of a overlying strata motion rule.
Description
Technical field
The present invention relates to a kind of sensor of monitoring goaf spoil pressure and gas parameter, be mainly applicable to goaf spoil pressure and gas componant, concentration and temperature monitoring.
Background technology
The generation that coal mine gob spoil pressure monitoring moves to overlying strata and evolution are studied significant, the evolutionary process of reliable Monitoring Data research and analysis Stope roof caving zone, fissure zone and warp damage can be provided, contribute to controlling Stope roof disaster and the analysis of water flowing fractured zone development height simultaneously; The gas componant in goaf, concentration and temperature monitoring are the necessary means remaining coal nature and gas explosion in control goaf.
Colliery seam mining mainly adopts whole caving method to roof control, and namely exploit after the advance of the face, roof strata is directly caving in goaf, is formed " three bands " in overlying strata; Stope overlying strata characteristics of motion field test research main path is the monitoring to face pressure, to overburden of the goaf prospecting by boring or physical prospecting; Coal goaf gas-monitoring commonly uses beam tube system, and namely utilize gas componant under infrared technology monitor well, but there is poor real, measuring distance is limited, the defect such as can not to locate.
For feature and the limitation of installations and facilities and the weak point at present of coal mine gob gas and pressure, patent applicant devises a kind of sensor of monitoring goaf spoil pressure and gas parameter.
Summary of the invention
In order to overcome the deficiency existing for existing coal mine gob gas and pressure monitoring device, the invention reside in and provide a kind of coal mine gob gas and pressure monitoring sensor and monitoring system, for the field test research stope overlying strata characteristics of motion and goaf gas componant, concentration and temperature monitoring provide a kind of means.
For achieving the above object, technical scheme of the present invention is:
Monitor a sensor for goaf spoil pressure and gas parameter, be made up of sensor, optical cable, cable, computing machine.
Sensor is made up of anti-riot shell, distribution type fiber-optic, pressure cushion, pressure-frequency converter respectively.
Anti-riot shell has steel plate to make, and vertical direction is divided into upper plate, middle plate and lower plate, adopts Plate Welding at upper plate and middle panel area, in both sides and upper plate perforate respectively, adopts quality of rubber materials to be connected at middle plate and lower panel area; Installing optical fibres between upper plate and middle plate, setting pressure pillow and pressure-frequency converter between middle plate and lower plate.
Fiber-optic monitoring goaf gas componant, concentration and temperature in sensor, optical fiber relies on the controller on ground to realize transmitting illuminant, signal accepts and signal transacting.
Erecting dense individual props spoil and fissure zone partial pressure are changed into the fluid pressure in pillow by pressure cushion, by converter, pressure-frequency converter are converted to corresponding electric signal, then test erecting dense individual props spoil and fissure zone pressure by cable transmission to frequency recorder; Erecting dense individual props spoil and fissure zone pressure, by the fluid pressure variation monitoring stope overlying strata motion conditions of pressure cushion.
The size of sensor selects the specification of sensor according to goaf spoil lumpiness size, in order to prevent and treat spoil inbreak shock transducer, with float coal or spoil covering sensor, sensor is evenly arranged in goaf, optical cable and cable external application water pipe precaution.
Advantageous Effects of the present invention is: sensor can effectively monitor goaf gas componant, concentration and temperature, can be control goaf fire or gas explosion accurate data; Sensor effectively can monitor erecting dense individual props spoil and fissure zone pressure, is of value to the research stope overlying strata characteristics of motion.
Accompanying drawing explanation
Fig. 1 goaf gas and pressure monitoring floor plan schematic diagram
Fig. 2 goaf gas and pressure monitoring facade arrange schematic diagram
Fig. 3 goaf gas and pressure monitor system schematic diagram
Floor map on Fig. 4 sensor
Fig. 5 sensor lower plane schematic diagram
Fig. 6 sensor diagrammatic cross-section
Schematic diagram on the left of Fig. 7 sensor
Fig. 8 sensor right side schematic view
In figure: the spoil 6-haulage drift 7-fissure zone rock of 2-force piece 3-sensor 4-optical cable 5-goaf, 1-return aircourse
Embodiment
A kind of sensor of monitoring goaf spoil pressure and gas parameter, be made up of sensor (3), optical cable (3-1d), cable (3-1e), computing machine, wherein sensor (3) is made up of anti-riot shell (3-1), distribution type fiber-optic (3-1a), pressure cushion (3-1b), pressure-frequency converter (3-1c) respectively.
The installation of sensor: advancing working face support (2) time sensor (3) is placed on support (2) rear, in order to prevent and treat spoil inbreak shock transducer (3), with float coal or spoil covering sensor (3); Optical cable (3-1d) and cable (3-1e) install steel pipe outward, all the other optical cables (3-1d) and cable (3-1e) are placed on force piece (2) below, along with installing and lay optical cable (3-1d) and cable (3-1e) in advance of the face process successively, install next row sensor (3), the quantity of sensor (3) requires to determine according to Monitoring Design simultaneously.
Pressure monitoring: erecting dense individual props spoil (5) and fissure zone (7) pressure are changed into the fluid pressure in pressure cushion (3-1b) by the pressure cushion (3-1b) in sensor (3), be converted to corresponding electric signal by pressure-frequency converter (3-1c), then be transferred to frequency recorder test erecting dense individual props spoil (5) and fissure zone (7) pressure by cable (3-1e); Erecting dense individual props spoil (5) and fissure zone (7) pressure pass through the fluid pressure variation monitoring stope overlying strata motion conditions of pressure cushion (3-1b), sensor (3) effectively can monitor erecting dense individual props spoil (5) and fissure zone (7) pressure, is of value to the research stope overlying strata characteristics of motion.
Gas componant, concentration and temperature monitoring: the distribution type fiber-optic (3-1a) in sensor (3) monitors goaf gas componant, concentration and temperature, distribution type fiber-optic (3-1a) relies on the controller on ground to realize transmitting illuminant, signal accepts and signal transacting.Sensor (3) can effectively monitor goaf gas componant, concentration and temperature, can provide accurate measurements data for control goaf fire or gas explosion;
The above; be only the specific embodiment of the present invention; but the protection domain of invention is not limited thereto; any engineering technical personnel being familiar with the art are in technical scope of the present invention; some conversion can be done; as explosion-resistant enclosure form, pressure cushion become other pressure and transmit form, change fiber deployment form etc., all should as infringement protection scope of the present invention, therefore protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. monitor a sensor for goaf spoil pressure and gas parameter, be made up of sensor, optical cable, cable, computing machine, it is characterized in that:
1. sensor is made up of anti-riot shell, distribution type fiber-optic, pressure cushion, pressure-frequency converter respectively;
2. anti-riot shell has steel plate to make, and vertical direction is divided into upper plate, middle plate and lower plate, adopts Plate Welding at upper plate and middle panel area, in both sides and upper plate perforate respectively, adopts quality of rubber materials to be connected at middle plate and lower panel area; Installing optical fibres between upper plate and middle plate, setting pressure pillow and pressure-frequency converter between middle plate and lower plate;
3. fiber-optic monitoring goaf gas componant, concentration and temperature in sensor, optical fiber relies on the controller on ground to realize transmitting illuminant, signal accepts and signal transacting;
4. erecting dense individual props spoil and fissure zone partial pressure are changed into the fluid pressure in pillow by pressure cushion, by converter, pressure-frequency converter are converted to corresponding electric signal, then test erecting dense individual props spoil and fissure zone pressure by cable transmission to frequency recorder; Erecting dense individual props spoil and fissure zone pressure, by the fluid pressure variation monitoring stope overlying strata motion conditions of pressure cushion;
5. the size of sensor selects the specification of sensor according to goaf spoil lumpiness size, in order to prevent and treat spoil inbreak shock transducer, with float coal or spoil covering sensor, sensor is evenly arranged in goaf, optical cable and cable external application water pipe precaution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510334125.2A CN104897213A (en) | 2015-06-16 | 2015-06-16 | Sensor for monitoring waste rock pressure and gas parameter in goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510334125.2A CN104897213A (en) | 2015-06-16 | 2015-06-16 | Sensor for monitoring waste rock pressure and gas parameter in goaf |
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| CN104897213A true CN104897213A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510334125.2A Pending CN104897213A (en) | 2015-06-16 | 2015-06-16 | Sensor for monitoring waste rock pressure and gas parameter in goaf |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026001A (en) * | 2018-09-25 | 2018-12-18 | 中国矿业大学 | A kind of drawing coal technology and parameter regulation means and device improving top coals' recovery ratio |
| CN110470273A (en) * | 2019-09-19 | 2019-11-19 | 河南理工大学 | A kind of back sinking measurement ball monitoring method based on pressure difference |
| CN114858128A (en) * | 2022-04-22 | 2022-08-05 | 中煤科工生态环境科技有限公司 | Monitoring design method and device for overburden rock three-zone residual settlement in mining subsidence area |
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| JP2000097737A (en) * | 1998-09-28 | 2000-04-07 | Babcock Hitachi Kk | Rock fall and collapse monitor system |
| CN102928144A (en) * | 2012-10-14 | 2013-02-13 | 中国矿业大学 | System for monitoring gob stress in real time and overlying strata breakage judgment method |
| CN103437814A (en) * | 2013-07-23 | 2013-12-11 | 新疆大学 | Gob-side entry retaining mine ground pressure monitoring system |
| CN203415086U (en) * | 2013-07-24 | 2014-01-29 | 西安科技大学 | High-density networked wireless monitoring device for temperature field of mined-out area |
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2015
- 2015-06-16 CN CN201510334125.2A patent/CN104897213A/en active Pending
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| JP2000097737A (en) * | 1998-09-28 | 2000-04-07 | Babcock Hitachi Kk | Rock fall and collapse monitor system |
| CN102928144A (en) * | 2012-10-14 | 2013-02-13 | 中国矿业大学 | System for monitoring gob stress in real time and overlying strata breakage judgment method |
| CN103437814A (en) * | 2013-07-23 | 2013-12-11 | 新疆大学 | Gob-side entry retaining mine ground pressure monitoring system |
| CN203415086U (en) * | 2013-07-24 | 2014-01-29 | 西安科技大学 | High-density networked wireless monitoring device for temperature field of mined-out area |
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| 冯英华: "松散岩体在采空区内应力状态的数值模拟研究", 《淮南职业技术学院学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026001A (en) * | 2018-09-25 | 2018-12-18 | 中国矿业大学 | A kind of drawing coal technology and parameter regulation means and device improving top coals' recovery ratio |
| CN109026001B (en) * | 2018-09-25 | 2024-01-23 | 中国矿业大学 | Coal caving process for improving top coal caving rate and parameter adjusting method and device |
| CN110470273A (en) * | 2019-09-19 | 2019-11-19 | 河南理工大学 | A kind of back sinking measurement ball monitoring method based on pressure difference |
| CN110470273B (en) * | 2019-09-19 | 2021-07-09 | 河南理工大学 | Roadway roof subsidence measuring ball monitoring method based on pressure difference |
| CN114858128A (en) * | 2022-04-22 | 2022-08-05 | 中煤科工生态环境科技有限公司 | Monitoring design method and device for overburden rock three-zone residual settlement in mining subsidence area |
| CN114858128B (en) * | 2022-04-22 | 2023-10-27 | 中煤科工生态环境科技有限公司 | Method and device for monitoring and designing three-zone residual settlement of overburden rock in mining subsidence area |
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Application publication date: 20150909 |
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