PHYSICAL SIMULATION STUDY OF PRINCIPAL STRESS DIFFERENCE EVOLUTION LAW OF SURROUNDING ROCK OF DEEP MINE ROADWAYS
NIU Shuangjian1，JING Hongwen2，YANG Dafang3
(1. School o f Energy Science and Engineering，Henan Polytechnic University，Jiaozuo，Henan 454003，China；2. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221008，China；3. School of Civil Engineering，Henan Polytechnic University，Jiaozuo，Henan 454003，China)
Abstract：In the engineering background of a failure deep mine roadways of in Shandong Yuncheng Mine，its excavation unloading whole process is physically simulated by the large scale(1.0 m×1.0 m×1.0 m) three-dimension test system. The failure patterns and range of surrounding rock of deep mine roadways with no support are obtained by the method of model thin section. Using the independent development testing elements for three-dimensional stress，the actual loading-unloading stress paths and stress states of surrounding rock in different depths of deep mine roadways are revealed，and the evolution law of deviatoric stress inside and outside of the broken rock zone are mainly studied. Based on the results of the failure patterns and range of surrounding rock，the evolution mechanism of deviatoric stress is initial explored.
牛双建1，靖洪文2，杨大方3. 深井巷道围岩主应力差演化规律物理模拟研究[J]. 岩石力学与工程学报, 2012, 31(s2): 3811-3820.
NIU Shuangjian1，JING Hongwen2，YANG Dafang3. PHYSICAL SIMULATION STUDY OF PRINCIPAL STRESS DIFFERENCE EVOLUTION LAW OF SURROUNDING ROCK OF DEEP MINE ROADWAYS. , 2012, 31(s2): 3811-3820.
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2012, Vol. 31 
