Method for judging burst accident in early burst happening period rapidly and predicting gas discharge scale
A gas gushing and gas gushing volume technology, applied in the field of coal mine disaster relief, can solve the problems of wind flow disorder, unrealistic, damage, etc., to achieve the effect of control measures to help and prevent further expansion
Active Publication Date: 2015-01-14
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
These three methods can calculate the amount of gas emission after the outburst, but these methods are obtained after the accident, through the approximate calculation of the gas concentration sensor in the middle and long distance, and miss the accident rescue and the prevention of secondary disasters. time
[0006] In addition, it is difficult to quickly judge the scale of gas outburst during the outburst process. In addition to the large amount of gas gushing out, the wind flow near the outburst point is disturbed and the air volume is unstable, and the on-site equipment is seriously damaged by the gas gushing out and the thrown coal. , and the gas concentration is too high, power failure and other reasons, resulting in the gas concentration sensor near the outburst, stop working soon after the coal and gas outburst occurs
Therefore, it is often very difficult or even unrealistic to completely rely on the gas concentration sensor near the protruding point to conduct a statistical analysis of the gas emission.
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[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0037] see figure 1 , first use the central computer (personal workstation) to establish the prediction system software and place it in the early warning server; the real-time data monitored by the underground gas concentration sensor is transmitted to the early warning server through the monitoring data communication substation, and the data is analyzed in the early warning server to obtain The analysis results are displayed; the analysis results are displayed on the computer terminal through the local area network, and the alarm will alarm or give corresponding prompts depending on the situation.
[0038] see figure 2 , assuming that the excavation roadway has outstanding danger, the size of the excavation roadway, the section size of the uphill section and the wind speed up the mountain are known; gas concentration sensors are arranged at...
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The invention discloses a method for judging a burst accident in an early burst happening period rapidly and predicting gas discharge scale. The method comprises: a system used for judging the bust accident and predicting the gas discharge scale is provided, data detected by each gas sensor in the system are transmitted to a pre-caution server in real time through a monitoring data communication branch station, analysis is conducted to the detected data by the pre-caution server, and whether burst happens or not is judged; and when a burst happens according to the judgment, prediction is conducted to gas gushing amount of the burst, burst lasting time, gas countercurrent range and the like according to data detected by a second gas sensor and a fourth gas sensor or by a predicting mold. The method can judge the burst accident rapidly in the early happening period of a coal and gas burst accident and can predict the gas gushing amount, the burst lasting time and the gas countercurrent range rapidly, and therefore further enlargement of the accident is prevented, and meanwhile the method is pretty helpful for timely rescue to the accident, accident avoiding to under well staff, control measures after the accident and the like.
Description
technical field [0001] The invention relates to the technical field of coal mine disaster relief, in particular to a coal and gas outburst at the initial stage, which can quickly identify outburst accidents and quickly predict the amount of gas gushing out, the duration of the outburst, and the range of gas backflow (gas gushing scale and gas backflow range) Methods. Background technique [0002] Coal and gas outburst accidents are one of the most serious disasters in the production process of coal mines. my country is one of the countries with the most serious and harmful coal and gas outbursts in the world. During the outburst process, a large amount of pulverized coal and gas will be emitted, which can directly destroy the roadway support and facilities, damage the ventilation system, submerge personnel, and cause personnel and property losses. In addition, the protruding high-concentration gas may threaten the "safe" area under normal conditions during the process of di...
Claims
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IPC IPC(8): E21F17/18
Inventor 程国强胡千庭赵旭生谭云亮武文宾田静萍于海峰朱学亮
Owner SHANDONG UNIV OF SCI & TECH