(1. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China；2. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，
China)
Abstract：The surrounding rock of roadway in Tertiary thick coal seam in Qingshui coal mine of Shenyang is soft with high ground pressure. The tunnel had large deformation with 4 times reinforcement and much damaged support after excavation. The mechanisms of rock plastic flow，asymmetry deformation and failure and inharmonic deformation between support and rock are analyzed. The initial support with constant resistance and large deformation bolt can protect the support capacity of the anchorage zone. After the release of deformation energy by the extensional deformation of the constant resistance and large deformation bolt，the concentration stress is transferred to deep to utilize the strength of deep surrounding rock；then the stable loading plastic zone is formed. According to the characteristic of the mining roadway，the reinforced support is complementary with the strengthened roof，released stress sidewalls and supported side corner. The stability is dependent on the common load by support and surrounding rock. The new design containing anchor cable，constant resistance and large deformation bolt，steel band，injected pile is applied to successfully controlling the roadway at #205 working face in second mining area in southern mine. The theory is applied to controlling the stability of this kind of coal entry. The roof subsidence，sidewall shrinkage and floor heave reduced by 75%，60%，42%，respectively. The practice shows that the proposed method can control the deformation of the roadway with soft rock.
张国锋1，2，于世波1，2，李国峰1，2，霍君英1，2. 巨厚煤层三软回采巷道恒阻让压互补支护研究[J]. 岩石力学与工程学报, 2011, 30(8): 1619-1626.
ZHANG Guofeng1，2，YU Shibo1，2，LI Guofeng1，2，HUO Junying1，2. RESEARCH ON COMPLEMENTARY SUPPORTING SYSTEM OF CONSTANT RESISTANCE WITH LOAD RELEASE FOR THREE-SOFT MINING ROADWAYS IN EXTREMELY THICK COAL SEAM. , 2011, 30(8): 1619-1626.
何满潮，钱七虎. 深部岩体力学基础研究综述[C]// 第九届全国岩石力学与工程学术大会论文集. 北京：科学出版社，2006：49-62.(HE Manchao，QIAN Qihu. Summary of basic research on rock mechanics at great depth[C]// Proceedings of the 9th Rock Mechanics and Engineering Conference. Beijing：Science Press，2006：49-62.(in Chinese))
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2011, Vol. 30 
