|
|
|
| CLASSIFICATION OF FAILURE MODES AND CONTROLLING MEASURES FOR SURROUNDING ROCK OF LARGE-SCALE CAVERNS WITH HIGH GEOSTRESS |
| DONG Jiaxing1，2，XU Guangli2，LI Zhipeng2，SONG Shengwu3，ZHANG Shishu3， XIAO Pingxi3，ZHANG Fangtao2，SHEN Yanjun4 |
(1. Faculty of Electric Power Engineering，Kunming University of Science and Technology，Kunming，Yunnan 650500，China；
2. Engineering Research Center of Rock and Soil Drilling and Excavation and Protection of Ministry of Education，China
University of Geosciences，Wuhan，Hubei 430074，China；3. PowerChina Chengdu Engineering Corporation Limited，
Chengdu，Sichuan 610072，China；4. School of Architecture and Civil Engineering，Xi?an University of
Science and Technology，Xi?an，Shaanxi 710054，China) |
|
|
|
|
Abstract Rockburst，collapse，large deformation of shotcrete layers after support，rock cracks and other damage phenomena appeared in the underground caverns of Jinping I，Houziyan and other large hydropower projects during construction. Systematic researches have seldom been performed on the deformation and instability modes of surrounding rock and the controlling measures. Based on the collected geological and design data，the geophysical surveying，the monitored data and the field investigation in underground caverns of Dagangshan，1st stage of Jinping，Houziyan，Guandi and other typical hydropower projects during construction，the failures of surrounding rock are divided into 3 modes：the rock structure controlled and gravity-driven mode；the stress-driven mode and the mixed mode according the controlling factors. The failure modes can also be divided into 16 basic modes according to the main project sites where instability occurs in 5 areas of the caverns. The proposed controlling measures were used in Houziyan project to show their feasibility and effectiveness.
|
|
Received: 16 June 2014
|
|
|
|
| [1] 国家能源局. 水电发展“十二五”规划(2011～2015年)[R]. 国加能源局，2012.(National Energy Adminstration. Hydropower development in the 12th five-year plan(in 2011–2015)[R]. Beijing：National Energy Administration，2012.(in Chinese))
[2] 宋胜武，冯学敏，向柏宇，等. 西南水电高陡岩石边坡工程关键技术研究[J]. 岩石力学与工程学报，2011，30(1)：1–22.(SONG Shengwu，FENG Xuemin，XIANG Boyu，et al. Research on key technologies on high and steep rock slopes of hydropower engineering in Southwest China[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：1–22.(in Chinese))
[3] 魏志云，徐光黎，申艳军，等. 大岗山水电站地下厂房区辉绿岩脉群发育特征及稳定性状况评价[J]. 工程地质学报，2013，21(2)：206–215.(WEI Zhiyun，XU Guangli，SHEN Yanjun，et al. Characteristics and stability evaluations of diabase dikes group surrounding underground caverns of Dagangshan hydropower station[J]. Journal of Engineering Geology，2013，21(2)：206–215.(in Chinese))
[4] 黄润秋，黄 达，段绍辉，等. 锦屏Ⅰ级水电站地下厂房施工期围岩变形开裂特征及地质力学机制研究[J]. 岩石力学与工程学报，2011，30(1)：23–35.(HUANG Runqiu，HUANG Da，DUAN Shaohui，et al. Geomechanics mechanism and characteristics of surrounding rock mass deformation failure in construction phase for underground powerhouse of Jinping I hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：23–35.(in Chinese))
[5] 王思敬，杨志法，刘竹华. 地下工程岩体稳定性分析[M]. 北京：科学出版社，1984：73–89.(WANG Sijing，YANG Zhifa，LIU Zhuhua. Stability analysis of rock mass in underground engineering[M]. Beijing：Science Press，1984：73–89.(in Chinese))
[6] HOEK E，BROWN E T. 岩石地下工程[M]. 连志升，田良灿，王维德，等译. 北京：冶金工业出版社，1986：148–195.(HOEK E，BROWN E T. Underground excavations in rock[M]. Translated by LIAN Zhisheng，TIAN Liangcan，WANG Weide，et al ed. Beijing：Metallurgical Industry Press，1986：148–195.(in Chinese))
[7] MARTIN C D，KAISER P K，MCCREATH D R. Hoek-Brown parameters for predicting the depth of brittle failure around tunnels[J]. Canadian Geotechnical Journal，1999，36(1)：136–151.
[8] 蔡 明，赵星光，KAISER P K. 论完整岩体的现场强度[J]. 岩石力学与工程学报，2014，33(1)：1–13.(CAI Ming，ZHAO Xingguang，KAISER P K. On field strength of massive rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(1)：1–13.(in Chinese))
[9] 向天兵，冯夏庭，江 权，等. 大型洞室群围岩破坏模式的动态识别与调控[J]. 岩石力学与工程学报，2011，30(5)：871–883.(XIANG Tianbing，FENG Xiating，JIANG Quan，et al. Failure mode dynamic recognition and control for surrounding rock of large-scale cavern group[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(5)：871–883.(in Chinese))
[10] 吴文平，冯夏庭，张传庆，等. 深埋硬岩隧洞围岩的破坏模式分类与调控策略[J]. 岩石力学与工程学报，2011，30(9)：1 782–1 802. (WU Wenping，FENG Xiating，ZHANG Chuanqing，et al. Cation of failure mode sans controlling measures for rock of deep tunnel in hard rock[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(9)：1 782–1 802.(in Chinese))
[11] 卢 波，丁秀丽，邬爱清，等. 高应力硬岩地区岩体结构对地下洞室围岩稳定的控制效应研究[J]. 岩石力学与工程学报，2012，31(增2)：3 831–3 846.(LU Bo，DING Xiuli，WU Aiqing，et al. Study of influence of rock structure on surrounding rock mass stability of underground caverns in hard rock region with high geostress[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.2)：3 831–3 846.(in Chinese))
[12] 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]. 岩石力学与工程学报，2009，28(11)：2 167–2 175.(LI Zhongkui，ZHOU Zhong，TANG Xuefeng，et al. Stability analysis and consideration 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))
[13] 黄书岭，王继敏，丁秀丽，等. 基于层状岩体卸荷演化的锦屏I级地下厂房洞室群稳定性与调控[J]. 岩石力学与工程学报，2011，30(11)： 2 203–2 216.(HUANG Shuling，WANG Jimin，DING Xiuli，et al. Stability and control for underground caverns of Jingping I hydropower station based on unloading evolution of layered rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(11)：2 203–2 216. (in Chinese)) |
|
|
|
2014, Vol. 33 
