EXPERIMENTAL RESEARCH ON GOB-SIDE ENTRY RETAINING SUPPORTED BY FILLING TWO MATERIALS
CHENG Yunhai1，2，JIANG Fuxing2，LI Haiyan3
(1. Key Laboratory of Safety and High-efficiency Mining of Ministry of Education，Anhui University of Science and Technology，Huainan，Anhui 232001，China；2. College of Civil and Environmental Engineering，University of Science and
Technology Beijing，Beijing 100083，China；3. Geotechnical and Structural Engineering Research Center，
Shandong University，Jinan，Shandong 250061，China)
Abstract：Gob-side entry retaining by filling has two shortcomings in high stress or encountering overlying strata violent movement，i.e. rigid material filling easily lead to packing wall stress concentration，even fractured or failure，caused fire or CO，CH4 leakage，and flexible material filling easily lead to roof cave-sink too large and even the occurrence of roof fall. In order to solve the problems，filling method was improved in Huaheng coal mine. Based on the study on the overburden stratum movement process and structure morphological characteristics above gob-side entry retaining，we calculated the amount of compression of the filling body，and two strength grades of roadway supports of gob-side entry retaining were design：the upper filler is high expansion to firmly seal the gap，and adapting impact load of the main roof movement；the lower filler strength support specific roof. Based on mechanical model established，the lower filler strength is calculated；Based on structure model established，the lower filler strength is calculated. Mineral pressure observation showed that the design of gob-side entry retaining met the application requirements.
[1] 钱鸣高，刘听成. 矿山压力及其控制[M]. 北京：煤炭工业出版社，1984：32–87.(QIAN Minggao，LIU Tingcheng. Ground pressure and strata control[M]. Beijing：China Coal Industry Publishing House，1984：32–87.(in Chinese))
[2] 宋振骐. 实用矿山压力[M]. 徐州：中国矿业大学出版社，1988：41–78.(SONG Zhenqi. Practical ground pressure[M]. Xuzhou：China University of Mining and Technology Press，1988：41–78.(in Chinese))
[3] 岑传鸿. 顶板灾害防治[M]. 徐州：中国矿业大学出版社，1994：41–78.(CEN Chuanhong. Roof disaster prevention[M]. Xuzhou：China University of Mining and Technology Press，1984：41–78.(in Chinese))
[4] 柏建彪，周华强，侯朝炯，等. 沿空留巷巷旁支护技术的发展[J]. 中国矿业大学学报，2004，33(2)：183–187.(BAI Jianbiao，ZHOU Huaqiang，HOU Chaojiong，et al. Development of support technology beside roadway in goaf-side entry retaining for next sublevel[J]. Journal of China University of Mining and Technology，2004，33(2)：183–187.(in Chinese))
[5] 姜福兴. 采场支架冲击载荷的动力学分析[J]. 煤炭学报，1994，19(6)：649–658.(JIANG Fuxing. Dynamic analysis of impack load on the support in the workings[J]. Journal of China Coal Society，1994，19(6)：649–658.(in Chinese))
[6] 张东升，茅献彪，马文顶. 综放沿空留巷围岩变形特征的试验研究[J]. 岩石力学与工程学报，2002，21(2)：331–334.(ZHANG Dongsheng，MAO Xianbiao，MA Wending. Testing study on deformation features of surrounding rocks of gob-side entry retaining in fully- mechanized coal face with top-coal caving[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(2)：331–334.(in Chinese))
[7] 蒋金泉. 采场围岩应力与运动[M]. 北京：煤炭工业出版社，1993：15–75.(JIANG Jinquan. Rock strata stress and movemengt around longwall face[M]. Beijing：China Coal Industry Publishing House，1993：15–75.(in Chinese))
[8] 姜福兴，张兴民，杨淑华. 长壁采场覆岩空间结构探讨[J]. 岩石力学与工程学报，2006，25(5)：979–985.(JIANG Fuxing，ZHANG Xingmin，YANG Shuhua. Discussion on overlying strata spatial structures of longwall in coal mine[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(5)：979–985.(in Chinese))
[9] 成云海，姜福兴，张兴民，等. 微震监测揭示的“C”型采场空间结构及应力场[J]. 岩石力学与工程学报，2007，26(1)：102–107. (CHENG Yunhai，JIANG Fuxing，ZHANG Xingmin，et al. “C” letter type strata spatial structure and mining pressure in longwall face monitored by microseismic monitoring techniques[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(1)：102–107.(in Chinese))
[10] 李术才，王汉鹏，钱七虎，等. 深部巷道围岩分区破裂化现象现场监测研究[J]. 岩石力学与工程学报，2008，27(8)：1 545–1 553.(LI Shucai，WANG Hanpeng，QIAN Qihu，et al. In-situ monitoring research on zonal disintegration of surrounding rock mass in deep mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(8)：1 545–1 553.(in Chinese))
[11] 康红普，林 健，张冰川. 小孔径预应力锚索加固困难巷道的研究与实践[J]. 岩石力学与工程学报，2003，22(3)：387–390.(KANG Hongpu，LIN Jian，ZHANG Bingchuan. Study on small borehole pretensioned cable reinforcing complicated roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(3)：387–390. (in Chinese))
[12] 翟英达，康立勋，朱德仁. 面接触块体结构的力学特性研究[J]. 煤炭学报，2003，28(3)：241–245.(ZHAI Yingda，KANG Lixun，ZHU Deren. Research on mechanics property of plane contact block structure[J]. Journal of China Coal Society，2003，28(3)：241–245. (in Chinese))
[13] 刘泉声，张 华，林 涛. 煤矿深部岩巷围岩稳定与支护对策[J]. 岩石力学与工程学报，2004，23(21)：3 732–3 737.(LIU Quansheng，ZHANG Hua，LIN Tao. Study on stability of deep rock roadways in coal mines and their support measures[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(21)：3 732–3 737.(in Chinese))
2012, Vol. 31 
