Abstract:Aiming at the controlling problem of the large deformations in the roof and coal sides in the process of surrounding rock support in large section coal roadways of deep mine,combining with the field investigation,numerical simulation,theoretical analysis,field test and field monitoring,the deformation failure characteristics of surrounding rock are analyzed. Then,a surrounding rock controlling system for large section roadway called double-cable-truss(DCT) is put forward. The composition structure,controlling mechanism and supporting superiority of DCT,stress field distribution characteristics of surrounding rock and key supporting parameters,etc. are researched systematically. The research results are as follows:(1) The deformation characteristics of large section coal roadways of deep mine are of large displacement,high sensitivity coefficient,continuous deformation and strong pertinence of failure. (2) Thick load bearing layer and rundle anchor structure in the surrounding rock of roadway are formed when using the new double-cable-truss controlling system. It could improve tensile and shear strength and ensure the surrounding rock and supporting structure to be stable. (3) The simulation results show that the vertical and uniform prestressed belts to the roof or two sides can be formed by the DCT. The stress dispersion degree is low and the effect range is 3–5 m. (4) A typical successful case of DCT application to large section coal roadway of deep mine is introduced in detail. The research achievements are applied to Xingdong mining area,which have great theoretical and practical values to similar roadway supports.
严 红,何富连,徐腾飞. [J]. 岩石力学与工程学报, 2012, 31(11): 2248-2257.
YAN Hong,HE Fulian,XU Tengfei. STUDY OF DOUBLE-CABLE-TRUSS CONTROLLING SYSTEM FOR LARGE SECTION COAL ROADWAY OF DEEP MINE AND ITS PRACTICE. , 2012, 31(11): 2248-2257.
[1] 何满潮,谢和平,彭苏萍,等. 深部开采岩体力学研究[J]. 岩石力学与工程学报,2005,24(16):2 803–2 813.(HE Manchao,XIE Heping,PENG Suping,et al. Study of rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2 803–2 813.(in Chinese))
[2] 马念杰,侯朝炯. 采准巷道矿压理论及应用[M]. 北京:煤炭工业出版社,1995:184.(MA Nianjie,HOU Chaojiong. The underground pressure of sectional roadways and its application[M]. Beijing:China Coal Industry Publishing House,1995:184.(in Chinese))
[3] SANDY M P,GIBSON W,GAUDREAU D. Canadian and Australian ground support practices in high deformation environments[C]// Proceedings of the Fourth International Seminar in Deep and High Stress Mining. Perth:Quality Press,2007:297–311.
[4] 王卫军,李树清,欧阳广斌. 深井煤层巷道围岩控制技术及试验研究[J]. 岩石力学与工程学报,2006,25(10):2 102–2 107.(WANG Weijun,LI Shuqing,OUYANG Guangbin. Study on technique and test of surrounding rock control of deep shaft coal roadway[J]. Chinese Journal of Rock Mechanics and Engineering,2006,25(10):2 102– 2 107.(in Chinese))
[5] 肖同强,柏建彪,王襄禹,等. 深部大断面厚顶煤巷道围岩稳定原理及控制[J]. 岩土力学,2011,32(6):1 874–1 880.(XIAO Tongqiang,BAI Jianbiao,WANG Xiangyu,et al. Stability principle and control of surrounding rock in deep coal roadway with large- section and thick top-coal[J]. Rock and Soil Mechanics,2011,32(6):1 874–1 880.(in Chinese))
[6] 刘泉声,张 伟,卢兴利,等. 断层破碎带大断面巷道的安全监控与稳定性分析[J]. 岩石力学与工程学报,2010,29(10):1 954–1 962. (LIU Quansheng,ZHANG Wei,LU Xingli,et al. Safety monitoring and stability analysis of large-scale roadway in fault fracture zone[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(10):1 954–1 962.(in Chinese))
[7] 柴肇云,康天合,李义宝,等. 特厚煤层大断面切眼锚索支护的作用[J]. 煤炭学报,2008,33(7):732–737.(CHAI Zhaoyun,KANG Tianhe,LI Yibao,et al. Anchoring effect of extremely thick coal seam large section roadway for cable bolts supporting[J]. Journal of China Coal Society,2008,33(7):732–737. (in Chinese))
[8] 王金华. 千米深井煤巷围岩变形特征及其控制技术研究[博士学位论文][D]. 北京:中国矿业大学,2007.(WANG Jinhua. Study on the deformation characteristics of surrounding rock mass and supporting technology for 1 000 m depth coal roadway[Ph. D. Thesis][D]. Beijing:China University of Mining and Technology,2007.(in Chinese))
[9] 康红普,王金华,林 健. 高预应力强力支护系统及其在深部巷道中的应用[J]. 煤炭学报,2007,32(12):1 233–1 238.(KANG Hongpu,WANG Jinhua,LIN Jian. High pretensioned stress and intensive bolting system and its application to deep roadways[J]. Journal of China Coal Society,2007,32(12):1 233–1 238.(in Chinese))
[10] 刘 波,杨仁树,何满潮,等. 深部矿井锚拉支架设计理论及应用[J]. 岩石力学与工程学报,2005,24(16):2 875–2 881.(LIU Bo,YANG Renshu,HE Manchao,et al. Design principle for truss-bolt system and its application to deep coal mine roof reinforcement[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2 875–2 881.(in Chinese))
[11] LIU B,YUE Z Q,THAM L G. Analytical design method for a truss-bolt system for reinforcement of fractured coal mine roofs—illustrated with a case study[J]. International Journal of Rock Mechanics and Mining Sciences,2005,42(2):195–218.
[12] 樊克恭,蒋金泉. 弱结构巷道围岩变形破坏与非匀称控制机理[J]. 中国矿业大学学报,2007,36(1):54–59.(FAN Kegong,JIANG Jinquan. Deformation failure and non-harmonious control mechanism of surrounding rocks of roadways with weak structures[J]. Journal of China University of Mining and Technology,2007,36(1):54–59.(in Chinese))
[13] 何富连,杨绿刚,杨红增,等. 千米深井大跨度煤巷顶帮桁架联合控制技术[J]. 中国矿业,2011,20(3):65–68.(HE Fulian,YANG Lugang,YANG Hongzeng,et al. Combined control technology of large-span coal entry with top and side cable truss in kilometer deep mine[J]. China Mining Magazine,2011,20(3):65–68.(in Chinese))
[14] 赵洪亮,姚精明,何富连,等. 大断面煤巷预应力桁架锚索的理论与实践[J]. 煤炭学报,2007,32(10):1 061–1 065.(ZHAO Hongliang,YAO Jingming,HE Fulian,et al. Application of prestress truss cable in large cross section coal roadway[J]. Journal of China Coal Society,2007,32(10):1 061–1 065.(in Chinese))
[15] LI J P,HE F L,YAN H,et al. The caving and sliding control of surrounding rocks on large coal roadways affected by abutment pressure[J]. Safety Science,2012,50(4):773–777.
[16] 张 农,高明仕,许兴亮. 煤巷预拉力支护体系及其工程应用[J].矿山压力与顶板管理,2002,19(4):1–4.(ZHANG Nong,GAO Mingshi,XU Xingliang. Pretentioned supporting system of roadway and its engineering application[J]. Ground Pressure and Strata Control,2002,19(4):1–4.(in Chinese))
[17] 陆庭侃,刘玉洲,于海勇. 采区准备巷道层状复合顶板的离层和机制[J]. 岩石力学与工程学报,2005,24(增1):4 663–4 669.(LU Tingkan,LIU Yuzhou,YU Haiyong. Separation characteristics and mechanisms of laminated composite roof strata of long wall roadway[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(Supp.1):4 663–4 669.(in Chinese))
[18] 张 农,袁 亮. 离层破碎型煤巷顶板的控制原理[J]. 采矿与安全工程学报,2006,23(1):34–38.(ZHANG Nong,YUAN Liang. Control principle of separating and broken roof rock strata in roadway[J]. Journal of Mining and Safety Engineering,2006,23(1):34–38.(in Chinese))