A clear understanding of influencing factors of mine water d
Date:2013-11-26 Hits:
Influence factors of mine water disasters include natural and human factors. Have a deep understanding of the flood factors on coal mine, to take effective measures to prevent the flood. Each coal people should have a clear understanding of factors of flood.
Natural factors: rainfall, topography, surface water, surrounding rock properties, geological structure. Precipitation determines the entire mining area water abundance degree.
Topographic effects on the flow of water and groundwater recharge. Surface water is not only will affect the water rich groundwater will also directly crushing into mine.
Properties of surrounding rock roadway can be divided into: aquifer and aquifuge, water more thick, more developed across the crack, the water is more strong, the aquifer water pressure is greater, the greater possibility of water. Thickness of water resisting layer is thicker, the better the ability of water resistance, less possibility of damage.
The geological structure in rock fissure, fault, joint are the dominant surface water, water karst collapse column is an important water conducting channel, prone to major water inrush.
The artificial factors are: old empty water, water drilling, mining damage, long-term drainage.
The old empty water is difficult to detect, prone to sudden water inrush. Drilling such as bad or closed in the tunneling process, loose circle in the roadway surrounding will, will cause the aquifer water into the tunnel. Coal face roof will produce water flowing fractured zone, the bottom will produce failure, the failure zone once communication aquifer, will cause the water inrush accident. Long term mine drainage can also make water filling mine changes.
------分隔线----------------------------
- Link
-