Method of judging and identifying quickly burst accident and forecasting scale of gas discharge scale in early beginning stage of burst accident

Abstract

The invention discloses a method of judging and identifying quickly burst accident and forecasting the scale of a gas outburst for the outburst beginning. The method comprises seven sensors installed in the pit. Data gained by each gas sensor detecting is transmitted to an early-warning server through a monitoring-data communication station. The detected data is analyzed by the early-monitoring server. The early-warning server judges whether outburst occurs. When the detected data is judged as the outburst, gas gushing amount, duration, countercurrent scope and the like are forecasted according to the data detected by a second gas sensor and a forth gas sensor. The spreading scope of the outburst is judged according to a fifth gas sensor and a seventh gas sensor. The method has the advantages of forecasting quickly the burst accident, the gas gushing amount, the duration and the gas countercurrent scope on the beginning of the gas outburst, preventing the disaster from spreading further and being helpful for rescuing timely, avoiding disaster for the people in the pit and the control measures of the aftermath of the disaster.

Description

technical field [0001] The invention relates to a method for quickly identifying outburst accidents and rapidly predicting the scale of gas gushing in the early stage of coal and gas outburst. Background technique [0002] Coal and gas outburst accidents are one of the most serious disasters in the coal mine production process. my country is one of the countries with the most serious and most harmful coal and gas outbursts in the world. In the early stage of the outburst, a large amount of pulverized coal will be ejected, and a large amount of gas will be gushed out, which can directly wash away the roadway support and facilities, destroy the ventilation system, flood people, and cause loss of personnel and property. In addition, in the process of dispersing and discharging out of the mine, the prominent high-concentration gas may also threaten the "safe" area under normal conditions, resulting in secondary accidents such as gas explosion. [0003] Coal and gas outburst is ...

AI Technical Summary

Problems solved by technology

These three methods can calculate the amount of gas gushing out after the outburst, but these methods are obtained by approximate calculation of the mid-range and long-distance gas sensors after the accident, and the time for accident rescue and secondary disaster prevention is missed.

[0006] In addition, it is difficult to quickly judge the scale of gas outburst in the early stage of outburst. In addition to the large amount of gas gushing out, the air flow near the outburst is turbulent and the air volume is unstable. Severe, high gas concentration, power outage and other reasons cause the gas sensor near the outburst to 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 sensors near the protruding points to conduct statistical analysis on the gas emission.

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