RESEARCH ON COUNTERMEASURE OF CONSTANT RESISTANCE AND LARGE DEFORMATION COUPLING SUPPORT OF RETURN AIR COURSE SOFT ROCK ROADWAY IN XINAN COAL MINE
SUN Xiaoming1，2，WANG Dong1，2，YANG Jun1，2，XU Huichen1，2，LIU Zongquan1，2，CHEN Feng1，2
(1. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，China；2. School of Mechanics and Civil Engineering，China University of Mining and Technology， Beijing 100083，China)
Abstract：To solve the destruction phenomena of non-linearity large deformation in the +535 m return air course soft rock roadway of Xinan coal mine，such as serious floor heave，side wall shrinking and roof sinking，situ engineering geomechanics analysis，indoor physical mechanic property research and three-dimensional numerical simulation were adopted. And a thorough study involving the deformation failure mechanism of the return air course soft rock roadway of Xinan coal mine was developed. The type of deformation mechanism of this soft rock roadway was confirmed and transferred successfully. The support form of constant resistance and large deformation bolt + metal net + floor anchor pipe + steel fiber reinforced concrete was proposed and used in practice successfully in Xinan coal mine. Practice was proved that the coupling technology based on constant resistance and large deformation bolt could effectively transfer the deformation mechanism，absorb the deformation energy accumulated in surrounding rock，cut off the plastic sliding force of floor heave and ensure the total safety of the roadway.
孙晓明1，2，王 冬1，2，杨 军1，2，徐慧臣1，2，刘宗权1，2，陈 峰1，2. 新安煤矿回风石门软岩巷道恒阻大变形耦合支护对策研究[J]. 岩石力学与工程学报, 2014, 33(S2): 4129-4139.
SUN Xiaoming1，2，WANG Dong1，2，YANG Jun1，2，XU Huichen1，2，LIU Zongquan1，2，CHEN Feng1，2. RESEARCH ON COUNTERMEASURE OF CONSTANT RESISTANCE AND LARGE DEFORMATION COUPLING SUPPORT OF RETURN AIR COURSE SOFT ROCK ROADWAY IN XINAN COAL MINE. , 2014, 33(S2): 4129-4139.
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2014, Vol. 33 
