Method for quickly judging underground coal mine disaster accident based on tracer gas
A technology for tracing gas and accidents, applied in mining equipment, mining equipment, earthwork drilling and mining, etc., can solve the problems of undiscovered underground disasters and accidents, and achieve the effect of preventing further expansion
Active Publication Date: 2017-01-04
NORTH CHINA INST OF SCI & TECH
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Problems solved by technology
[0005] At present, researchers have not found a system or method to quickly identify underground disaster accidents and quickly predict the type and severity of disaster accidents, and use them to guide rescue and secondary disaster prevention
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can understand the present invention.
[0024] Such as figure 1 As shown, a tracer gas release pipeline 4 is installed at the air inlet of the air inlet lane 2 of the working face 1, and the length of the release pipeline 4 at the air inlet lane 2 of the working face is at least 5m; Gas release device 6, pressure stabilizing device 7, flow control device 8, sensors are installed at the end of release pipeline 4 9. Set the tracer gas collection pipeline 5 at the air outlet of the air return lane 3 on the working face 1, and the length of the collection pipeline 5 in the air return lane 3 is at least 5m; set sensors at the front end and the tail end of the collection pipeline 5 respectively 11 and a tracer gas detection device 10; the sensor 9. Sensor 11 is connected to the gas detection device 10; the ga...
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The invention provides a method for quickly judging an underground coal mine disaster accident based on tracer gas. Compared with the traditional method that the type and serious situation of a disaster cannot be judged quickly and accurately after an underground disaster occurs, the quick judgment of the disaster accident at the initial period of the underground disaster accident and quick prediction of an accident type, the serious situation of a disaster and all parameters of a disaster site not only can prevent further expansion of the disaster, but also can be greatly helpful for timely rescue in the accident, disaster avoiding of underground personnel and control measures taken after the disaster; and the underground disaster accident can be judged quickly and the accident type and the serious situation of the disaster can be predicted quickly through the volume dose and the concentration change of the tracer gas and the wind flow rate and the wind speed change in a roadway.
Description
technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a method for rapidly identifying catastrophic accidents in underground coal mines based on tracer gas. Background technique [0002] my country's coal mine safety status is not optimistic. Most of the coal seams mined in my country's coal mines have high gas content, low air permeability and complex geological structure. It is not easy to drain gas before mining, but during mining, the amount of gas released is large. The improvement of the degree of mining reduction has led to more complex and changeable changes in the stress field, coal and rock mass fissure field, and gas flow field induced by mining. Under certain conditions, it is easy to induce coal and gas outbursts and sudden gas gushing phenomena. cause gas accidents. At the same time, water damage and roof caving also occur from time to time. [0003] The control of mine disasters and the reduction of the risk...
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IPC IPC(8): E21F17/18E21F11/00
CPCE21F11/00E21F17/18
Inventor 张景钢宋扬孙春峰金庆利王栋
Owner NORTH CHINA INST OF SCI & TECH