大型尾水调压室穹顶开挖支护力学与变形特征研究

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Abstract The surge tank at tailrace of Jinping I hydropower station is composed of two vertical cylindrical wells of large-diameter at the location of high stress and complex geological configurations with two large scale faults and multiple sets of joints. It was difficult to cavern out the domes and setup supporting structures at the top of cylindrical wells. Engineering practice and theoretical research show that the methods of excavation and the parameters of supporting are the key factors influencing the stress distribution and deformation at the crest of the dome of the tailrace surge tank. Lamprophyre veins and fault f14 were found to exist above the dome of tailrace surge tank #1 through in-situ investigations. The deformation and failure mechanisms of surrounding rock of the tailrace surge tank are studied through mechanical analysis，in-situ monitoring and 3D numerical simulation. The deformational and mechanical characteristics of the dome rocks during excavation process were studied. Some advices on the excavation and support for the tailrace surge tank are thus presented as the technical supports for its excavation and design of the support.

Key words： hydraulic engineering tailrace surge tank fault dome surrounding rock mass mechanical and deformation characteristics

Received: 09 October 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I7/1398

[1]	周钟，汤雪峰，廖成钢，等. 雅砻江锦屏一级水电站地下厂房洞室群稳定与支护、厂房主要结构设计报告[R]. 成都：中国水电顾问集团成都勘测设计研究院，2007.(ZHOU Zhong，TANG Xuefeng，LIAO Chenggang，et al. Report on the surrounding rock mass stability and support，main structures design for the underground powerhouse group caverns of Jinping I hydropower project located on Yalongjiang River[R]. Chengdu：HydrocChina Chengdu Engineering Corporation，2007.(in Chinese)) " target="_blank">
[2]	周钟，巩满福，侯东奇，等. 四川省雅砻江锦屏一级水电站地下厂房洞室群稳定与支护设计报告(4)[R]. 成都：中国水电顾问集团成都勘测设计研究院，2008.(ZHOU Zhong，GONG Manfu，HOU Dongqi，et al. Report on the surrounding rock mass stability and support design for the underground powerhouse group caverns construction of Jinping I hydropower project located on Yalongjiang River(No.4)[R]. Chengdu：HydrocChina Chengdu Engineering Corporation，2008.(in Chinese)) " target="_blank">
[3]	中国水电顾问成都勘测设计研究院. 锦屏一级水电站地下厂房洞室群围岩质量物探检测阶段成果报告[R]. 成都：中国水电顾问集团成都勘测设计研究院，2009.(HydroChina Chengdu Engineering Corporation. Interim report of geophysical prospecting results of surrounding rock quality of the underground powerhouse of Jinping I hydropower station[R]. Chengdu：HydroChina Chengdu Engineering Corporation，2009.(in Chinese)) " target="_blank">
[4]	侯东奇，廖成刚，冯梅，等. 锦屏一级水电站地下厂房下游拱围岩变形开裂破坏成因分析与加固措施研究[J]. 水力发电学报，2012，31(5)：229-235.(HOU Dongqi，LIAO Chenggang，FENG Mei，et al. Study on deformation and damage causes and reinforcement measures of rock mass surrounding the downstream arch of underground powerhouse for Jinping I hydropower[J]. Journal of Hydroelectric Engineering，2012，31(5)：229-235.(in Chinese)) " target="_blank">
[5]	胡香伟，张开雄. 锦屏一级水电站尾水调压室穹顶施工技术[J]. 隧道建设，2008，28(6)：704-706.(HU Xiangwei，ZHANG Kaixiong. Construction technology for vault of tailrace surge chamber of Jinping I Hydropower Station[J]. Tunnel Construction，2008，28(6)：704-706.(in Chinese))
[6]	黄辉. 锦屏一级电站尾水调压室大角度上仰孔锚索施工[J]. 探矿工程，2009，36(2)：55-58.(HUANG Hui. Construction of anchor cable with large-angle upward hole in tailrace surge tank of Jinping hydropower station[J]. Exploration Engineering，2009，36(2)：55-58.((in Chinese))
[7]	刘涌江，杨静. 预应力锚索加固花岗岩类土质高边坡的现场测试研究[J]. 岩石力学与工程学报，2011，30(增1)：2 924-2 930.(LIU Yongjiang，YANG Jing. Field test study of granite soil high slope reinforced by prestressed cables[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：2 924-2 930.(in Chinese))
[8]	赵晓燕，张京伍，梁瑶，等. 花岗岩类土质边坡主被动组合锚固设计方法[J]. 岩石力学与工程学报，2013，32(3)：633-639.(ZHAO Xiaoyan，ZHANG Jingwu，LIANG Yao，et al. Design method for combined active/passive anchoring for granide soil slope[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(3)：633-639.(in Chinese))
[9]	孙钧. 岩石流变力学及其工程应用研究的若干进展[J]. 岩石力学与工程学报，2007，26(6)：1 081-1 106.(SUN Jun. Rock rheology mechanics and its advance in engineering applications[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：1 081-1 106.(in Chinese))
[10]	孙钧. 岩土材料流变及其工程应用[M]. 北京：中国建筑工业出版社，1999：4-42.(SUN Jun. Rock and soil rheology and its engineering applications[M]. Beijing：China Architecture and Building Press，1999：4-42.(in Chinese)) " target="_blank">
[11]	刘鸿，周德培. 压力分散型锚索内力变化规律试验研究[J]. 岩土力学，2012，33(4)：1 040-1 045.(LIU Hong，ZHOU Depei. Experiment research on change law of internal force of dispersed pressure anchor cable[J]. Rock and Soil Mechanics，2012，33(4)： 1 040-1 045.(in Chinese))
[12]	王克忠，李忠奎，包中坚. 水电站地下厂房层状围岩现场监测及稳定性研究[J]. 岩石力学与工程学报，2007，26(10)：2 148-2 152. (WANG Kezhong，LI Zhongkui，BAO Zhongjian. Study of site monitoring and stability of layered surrounding rocks of underground powerhouses of hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：2 148-2 152.(in Chinese))
[13]	张春生，刘宁，朱焕春，等. 锦屏深埋大理岩破裂扩展时间效应与控制效果评价[J]. 岩石力学与工程学报，2013，32(10)：1 964- 1 972.(ZHANG Chunsheng，LIU Ning，ZHU Huanchun，et al. Time-dependent behavior of crack propagation and evaluation of control effect of Jinping deep marble[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(10)：1 964-1 972.(in Chinese)) " target="_blank">
[14]	李仲奎，周钟，汤雪峰，等. 锦屏一级水电站地下厂房洞室群稳定性分析与思考[J]. 岩石力学工程学报，2009，28(11)：2 167- 2 175.(LI Zhongkui，ZHOU Zhong，TANG Xuefeng，et al. Stability analysis and considerations of underground powerhouse caverns group of Jinping I hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(11)：2 167-2 175.(in Chinese))
[15]	张雄，陈胜宏. 预应力锚索内锚段复合单元模型研究[J]. 岩土力学，2012，33(3)：933-938.(ZHANG Xiong，CHEN Shenghong. Composite element model research on inner anchoring section of prestressed anchor cable[J]. Rock and Soil Mechanics，2012，33(3)：933-938.(in Chinese))
[16]	徐前卫，尤春安，朱合华. 预应力锚索的三维数值模拟及其锚固机理分析[J]. 地下空间与工程学报，2005，1(1)：214-222.(XU Qianwei，YOU Chun?an，ZHU Hehua. Research on 3D numerical simulation of prestressed anchor cable and its anchoring mechanism[J]. Chinese Journal of Underground Space and Engineering，2005，1(1)：214-222.( in Chinese))
[17]	温进涛，朱维申，李术才. 锚索对结构面的锚固抗剪效应研究[J]. 岩石力学与工程学报，2003，22(10)：1 699-1 703.(WEN Jintao，ZHU Weishen，LI Shucai. Research on anchoring and shearing effect of anchoring cable[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(10)：1 699-1 703.(in Chinese))