Analysis on supporting principle and its application of powered support in large inclined fully mechanized face based on balance of rigid and flexible combined overturning moment
WANG Guofa1，2，XU Yajun1，2，LI Dingyi1，2
(1. Coal Mining Technology Department，Tiandi Science and Technology Co.，Ltd.，Beijing 100013，China； 2. China Coal Research Institute，Mining Design Institute，Beijing 100013，China)
Based on the characteristics of powered support instability，the attitude instability of powered support and its control method had been studied particularly. This paper presented a 3D supporting mechanism from the balance of overturning moment considering self-supporting，adjacent-pulling，bottom-pushing and top-pressing of powered support and gave the concept of rigid-flexible compositing coefficient. The instability condition of powered support was calculated by the methods of overturning moment and the support regulating ability was evaluated by rigid-flexible compositing coefficient. According to the static equilibrium condition，the matrix equations of powered support in sliding and overturning attitude instability were established. On this foundation，the paper quantitatively analyzed the support stability and its regulating ability in large dip angle coal seam，established the stability coupled equation between supports and surrounding rocks，and concluded the basic conditions for maintaining the stability of powered shield support in large dip angle mining face.
王国法1，2，徐亚军1，2，李丁一1，2. 大倾角综采工作面液压支架刚柔组合倾覆力矩平衡的支护原理及其应用[J]. 岩石力学与工程学报, 2018, 37(S2): 4125-4133.
WANG Guofa1，2，XU Yajun1，2，LI Dingyi1，2. Analysis on supporting principle and its application of powered support in large inclined fully mechanized face based on balance of rigid and flexible combined overturning moment. , 2018, 37(S2): 4125-4133.
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2018, Vol. 37 
