The Mining Technique Research Under The Villages Of Pan-jiang Coal Mineral Area

The geography is very complicated in Pan-jiang mineral area ,there are lots of high mountains and deep valley , and there are also many villages of different scale in the scope of every coal mine. The coal under the villages is up to 1. 9 hundred millions ton . With the influence of farmland distribution , employment and residence , it is impossible to move these villages , so the mining under the villages is an important factor which obstructs the development of Pan-jiang coal mining area .This paper takes the mining under the Da-baiyan village of the second horizon in Shan-jiaoshu southern mining area as example , bases on the geology data and the observing data of earth surface sinking in the mined region .analysis the influence on the buildings and the possibility of causing geology disaster using "three bottom mining rule" theory .discuss the possibility and method of mining under the villages. The comprehensive mechanized mining technique of aligning the long wall retreat type filling with coal . rock and gypsum is also proposed, which is different from the traditional filling with water and sands , so the problem of mining under the villages can be resolved by this technique in Gui-zhou mountain area where lack the moving opportunity.