Study on Water-saving Coal Mining Technology Based on Grouting in Overburden Abscission Layer
Yushen mining area is vast and rich in coal resources,which is an important component of the national key coal base in northern Shaanxi.Continuous high-intensity coal mining has caused damage to groundwater resources and damaged the fragile local ecological environment.Aim at the characteristics of poor water resources and fragile ecological environment in arid and semi-arid regions of Yushen mining area,taking Guojiatan coal mine in the area as the key research object.Through studying the mining conditions,geological and hydrogeological characteristics of coal mine,it is put forward that on the basis of slice mining and limiting the development height of water flowing fractured zone,by grouting into overburen bed-separation to mainly fill and control the stability of upper aquifer,combined with roof aquiclude reconstruction(reinforcement),caving zone and water flowing fractured zone plugging with grouting,dynamic monitoring of coal mining under water containing effect and other technologies of coal mining under water containing integration technology system,and predicting the effect of water-preserved mining in the experimental demonstration area.
coal mining under water containinggrouting into overburen abscission layerslice miningYushen coal mining area
万方数据
维普
