|
|
|
| CONSTRUCTION BEHAVIOR AND STABILITY ANALYSIS OF BEDDED AND CATACLASTIC SURROUNDING ROCKS OF RELOADING CHAMBER WITH LARGE CROSS-SECTION |
| (Institute of Mining Technology，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China) |
|
|
|
|
Abstract With the rapid development of mining，the large-scale equipment enters the underground coal mine. It is inevitable to excavate chamber with large cross-section in the deep，bedded and cataclastic surrounding rocks and the special problems of engineering geology will be much more obvious. Reloading chamber with large cross-section(the span is 9.9 m，the wall is 9.45 m) is constructed in bedded and cataclastic surrounding rocks in Qipanjing coal mine，which is difficult to construct and similar projects are few. According to the characteristics of surrounding rocks，the construction sequence，the failure rule of high wall and the effect of support elements are studied by the three-dimensional small model；the construction process and the spatial dynamic change of surrounding rocks are really reappeared by the three-dimensional big model. The optimized construction scheme and the reasonable staggered distance of the section construction are chosen. The theoretical analysis shows that the failure mechanisms of high walls are different；the horizontal stress release leads to the rib spalling and stripping of high wall；the concept of load-bearing wall is put forward. The study results can provide reference to the design，construction and study for similar projects.
|
|
Received: 17 March 2010
|
|
|
|
| [1] 朱维申，何满潮. 复杂条件下围岩稳定性与岩体动态施工力学[M]. 北京：科学出版社，1996.(ZHU Weishen，HE Manchao. Stability of rock caverns in complex condition and mechanics of rock dynamic construction[M]. Beijing：Science Press，1996.(in Chinese))
[2] 董方庭. 巷道围岩松动圈支护理论及应用研究[M]. 北京：煤炭工业出版社，2001.(DONG Fangting. The supporting theory based on broken rock zone and its application technology[M]. Beijing：China Coal Industry Publishing House，2001.(in Chinese))
[3] 刘长武，禇秀生. 软岩巷道锚注加固原理及应用[M]. 徐州：中国矿业大学出版社，2001.(LIU Changwu，ZHE Xiusheng. Mechanism and application of bolting-grouting reinforcement in soft rock roadway[M]. Xuzhou：China University of Mining and Technology Press，2001.(in Chinese))
[4] 何满潮，李春华，王树仁. 大断面软岩硐室开挖非线性力学特性数值模拟研究[J]. 岩土工程学报，2002，24(4)：483–486.(HE Manchao，LI Chunhua，WANG Shuren. Research on the nonlinear mechanics characters of large section cavern excavation within soft rock by numerical simulation[J]. Chinese Journal of Geotechnical Engineering，2002，24(4)：483–486.(in Chinese))
[5] 朱维申，李术才，程 峰. 能量耗散模型在大型地下洞群施工顺序优化分析中的应用[J]. 岩土工程学报，2001，23(3)：333–336.(ZHU Weishen，LI Shucai，CHENG Feng. Application of energy dissipation model to optimization of construction order for large underground caverns[J]. Chinese Journal of Geotechnical Engineering，2001，23(3)：333–336.(in Chinese))
[6] 朱维申，孙爱花，王文涛，等. 大型硐室群高边墙位移预测和围岩稳定性判别方法[J]. 岩石力学与工程学报，2007，26(9)：1 729– 1 736.(ZHU Weishen，SUN Aihua，WANG Wentao，et al. Study on prediction of high wall displacement and stability judging method of surrounding rock for large cavern groups[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(9)：1 729–1 736.(in Chinese))
[7] 陈秀铜，李 璐. 大型地下厂房洞室群围岩稳定分析[J]. 岩石力学与工程学报，2008，27(增1)：2 864–2 872.(CHEN Xiutong，LI Lu. Stability analysis of surrounding rock of large underground powerhouse cavern group[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2 864–2 872.(in Chinese))
[8] 张 明，孙思奥，李仲奎. 地下厂房布置优化及施工过程的显式有限差分法数值模拟[J]. 岩石力学与工程学报，2008，27(增2)：3 760–3 767.(ZHANG Ming，SUN Si¢ao，LI Zhongkui. Numerical simulations of layout optimization and construction process of underground powerhouse with explicit finite difference method[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 760– 3 767.(in Chinese))
[9] 余伟健，高 谦，韩 阳，等. 不稳定围岩开挖与让压支护的优化设计及数值分析[J]. 煤炭学报，2008，33(1)：11–16(YU Weijian，GAO Qian，HAN Yang，et al. Optimization design and numerical analysis of excavation and yield supporting for unstable surrounding rock[J]. Journal of China Coal Society，2008，33(1)：11–16.(in Chinese))
[10] 吕 明，GRΦV E，DAHLE H，等. 高地应力岩体特殊照明峒室围岩支护设计[J]. 岩石力学与工程学报，2008，27(1)：35–41.(LU Ming，GRΦV E，DAHLE H，et al. Rock support design for special lighting caverns in high in-situ stress rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：35–41.(in Chinese))
[11] 陈卫忠，李术才，朱维申，等. 急倾斜层状岩体中巨型地下洞室群开挖施工理论与优化研究[J]. 岩石力学与工程学报，2004，23(19)：3 281–3 287.(CHEN Weizhong，LI Shucai，ZHU Weishen，et al. Excavation and optimization theory for giant underground caverns constructed in high dipping laminar strata[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 281–3 287.(in Chinese))
[12] 伍国军，陈卫忠，戴永浩，等. 浅埋大跨公路隧道施工过程和支护优化的研究[J]. 岩土工程学报，2006，28(9)：1 118–1 123.(WU Guojun，CHEN Weizhong，DAI Yonghao，et al. Study on excavation sequences and support optimization for shallow-buried and large- spanned tunnels[J]. Chinese Journal of Geotechnical Engineering，2006，28(9)：1 118–1 123.(in Chinese))
[13] 贾善坡，陈卫忠，于洪丹，等. 泥岩大变形隧道盾构施工法的围岩稳定性分析[J]. 岩石力学与工程学报，2007，26(增2)：3 897– 3 903.(JIA Shanpo，CHEN Weizhong，YU Hongdan，et al. Analysis of surrounding rock stability of mudstone large-deformation tunnel excavated by shield construction method[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：3 897–3 903.(in Chinese))
[14] 宋卫东，陈瑞宏，杜建华，等. 北京地铁10号线国贸—双井区间土压平衡盾构施工数值模拟研究[J]. 岩石力学与工程学报，2008，27(增2)：3 401–3 407.(SONG Weidong，CHEN Ruihong，DU Jianhua，et al. Numerical analysis of earth pressure balance shield tunneling at Guomao—Shuangjing interzone of Beijing subway line No.10[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 401–3 407.(in Chinese))
[15] 周丁恒，曹力桥，马永峰，等. 四车道特大断面大跨度隧道施工中支护体系力学性态研究[J]. 岩石力学与工程学报，2010，29(1)：140–148.(ZHOU Dingheng，CAO Liqiao，MA Yongfeng，et al. Research on construction behaviors of support system in four-lane ultra large-span tunnel with super-large cross-section[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(1)：140–148.(in Chinese))
[16] 康天合，郜进海，潘永前. 薄层状碎裂顶板综采切眼锚固参数与锚固效果[J]. 岩石力学与工程学报，2004，23(增2)：4 930– 4 935.(KANG Tianhe，GAO Jinhai，PAN Yongqian. Anchoring parameters and effect on thin-bedded and cataclastic roof of starting cut for fully mechanized mining[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(Supp.2)：4 930–4 935.(in Chinese))
[17] 郜进海，康天合，靳钟铭，等. 巨厚薄层状顶板回采巷道围岩裂隙演化规律的相似模拟实验研究[J]. 岩石力学与工程学报，2004，23(19)：3 292–3 297.(GAO Jinhai，KANG Tianhe，JIN Zhongming，et al. Similar simulation study on crack development law of surrounding rocks of roadway with great-thick thin-bedded top roof[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 292–3 297.(in Chinese)) |
|
|
|
2010, Vol. 29 
