STUDY OF DISTRIBUTION CHARACTERISTICS OF IN-SITU STRESSES FOR HUOZHOU MINING AREA
WANG Lianguo1，LU Yinlong1，YANG Xinhua2，GAO Feng1，ZHANG Hualei1， LI Hailiang1，YANG Feng1
(1. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221008，China；2. Huozhou Coal-electricity Group Co.，Ltd.，Huozhou，Shanxi 031400，China)
Abstract：In-situ stress is formed in rock mass with complex origin and experienced a prolonged geological period，and there are many influencing factors. And in-situ stress is one of the important influencing factors to the deep laneway rock stability in coal mines. The field measurement is systematically carried out by boring stress-relief method with hollow inclusion triaxial strain gauge in primary mineable coal bed of Huozhou mining area and actual survey ground stress data at different positions and depths are achieved. Distribution law of in-situ stress field is obtained by systematically analyzing testing data. It shows that crust of earth in Huozhou mining area is effected by horizontal tectonic stress field. By using FLAC3D program，the model is established to analyze the laneway stability of different orientations based on in-situ stresses and detailed engineering geological condition. Using obtained research results and the maximum horizontal stress theory to study working area of Tuanbai coal mine No.8，the coal roadway roof stability performance is mostly effected by the maximum horizontal stress. The result is helpful to determine mining stope tendency and to choose the calculation parameters of coal roadway supporting design strength. The conclusion has important significance for the safety and high effective product in coal mines.
王连国，陆银龙，杨新华，高峰，张华磊，李海亮，杨峰. 霍州矿区地应力分布规律实测研究[J]. 岩石力学与工程学报, 2010, 29(S1): 2768-2774.
WANG Lianguo1，LU Yinlong1，YANG Xinhua2，GAO Feng1，ZHANG Hualei1， LI Hailiang1，YANG Feng1. STUDY OF DISTRIBUTION CHARACTERISTICS OF IN-SITU STRESSES FOR HUOZHOU MINING AREA. , 2010, 29(S1): 2768-2774.
