DYNAMIC MECHANISM OF WATER INRUSH FROM FLOOR OF MINING FACE
HU Weiyue1，YIN Shangxian2
(1. Xi¢an Branch of China Coal Research Institute，Xi¢an，Shaanxi 710054，China； 2. Northern China University of Science and Technology，Beijing 065201，China)
Abstract：Stress distribution and its change regulation in floor rock mass of mining face with mining progress are analyzed in theory and the theory analysis results are proved by vertical stress in roof and floor of mining face which are measured and detected in boreholes with mining process. The change regulation of rock permeability in floor of mining face are tested in boreholes with mining progress. The relationships among mining，rock stress and water inrush from floor of mining face are studied. It is understood that there is a 0–20 m distance tensile stress area in floor rock of mining face and this area process with mining progress. The permeability of rock mass in tensile stress area is much bigger than other parts and it is easier to induce water inrush from floor of mining face.
虎维岳，尹尚先. 采煤工作面底板突水灾害发生的采掘扰动力学机制[J]. 岩石力学与工程学报, 2010, 29(S1): 3344-3349.
HU Weiyue1，YIN Shangxian2. DYNAMIC MECHANISM OF WATER INRUSH FROM FLOOR OF MINING FACE. , 2010, 29(S1): 3344-3349.
