Prevention and control of water inrush disaster in

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As we all know, "water, fire, gas, dust and roof" disasters are the five major disasters in coal mine production. Among them, water disaster has always been an important factor restricting the long-term development of coal resources development. With the development and extension of the underground rock stratum, the dynamic balance of the underground aquifer level is destroyed, inducing and strengthening the water, resulting in the deterioration of the underground mining environment,

often encounter the sudden ferocious seepage phenomenon, resulting in equipment flooding and casualties. Therefore, how to identify water hazards and take preventive measures according to the hydrogeological characteristics of the mining area is a very important topic

water sources and causes of water disasters

among the four water sources that cause coal mines, rainstorm, surface water, groundwater and old pit water, groundwater (pore water, fissure water, karst water) causes the highest frequency and the most serious harm. Underground karst water is particularly serious

it is understood and learned in detail that different water sources have different water source pressures that cause water disasters. In northern China, most of them are sudden floor karst water inrush; In the South and southwest regions, the water inrush pressure acting on the roof and floor of the coal seam is small, and the mine water inrush is mostly slow water inrush

the causes of water disasters in coal mines can be divided into natural geological factors and human factors. Geological factors include: old cellars, old empty water, aquifers and fault water diversion. Among them, the old gob ponding refers to the ponding in the old goaf and old roadway of the production mine. This kind of water exists around the mining face, which can form a large area of ponding area, and can also be distributed in a sporadic form. First of all, it must be reasonable to confirm the size tolerance of plastic parts formed by different plastics. Although the water volume of the water body is not very large, it has great suddenness because of its fast flow, especially when the mining area has been mined for many years, and mining down the mountain, Most of the upper coal seams have been mined out, which is easy to form old ponding

human factors mainly refer to some coal mines, over layer and over boundary mining, and imperfect waterproof system, resulting in serious water disasters

prevention and control measures for coal mine water disasters

the prevention and control of coal mine water disasters should adhere to the policy of "prediction and prediction, doubt must be explored, treatment first and then excavation", and implement the comprehensive prevention and control of "prevention, blocking, drainage, drainage and interception"

strengthen hydrogeological exploration

hydrogeological exploration before well construction is the compass of the whole coal mine production. However, some coal mines have to borrow money to make arbitrary changes in the depth of boreholes, or reduce the number of boreholes, and there are certain limitations in field data collection and data processing, which ultimately leads to the low level of detail and reliability of these coal mine hydrogeological data, especially some geological data do not have any impact on the relevant surface water The influence of karst water on mining is fully evaluated, and even the hydrogeological boundary is not clear, and there are large errors in the prediction of mine water inflow and other factors will bring great hidden dangers to mine safety production. Therefore, it is necessary to strengthen the hydrogeological exploration before the construction of the well, especially for the mine with complex geological structure

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