雅鲁藏布江街需水电站巨型危岩体基本特征及防治措施
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摘要
高位危岩体对水电工程的施工安全和正常运营具有显著影响,尤其是规模较大且位于开挖线以外的大型危岩体,大型设备难以到达且加固难度较大,其治理方案对地质勘探提出更高要求。雅鲁藏布江上游河谷深切,边坡高陡,在街需水电站左坝肩发育一大型危岩体,约37.5万方,通过查明危岩体的赋存边界、连通状态、等效参数,采用定性和定量方法综合确定危岩体整体和局部稳定性、失稳方式,并提出了针对性的治理措施,这对巨型危岩评价思路和防治措施,具有一定指导意义。
Large dangerous rock mass located outside excavation line in hydropower project construction has a significant impact on its safety and operation. It?s difficult to reach and to reinforce them,and which put forward higher requirements to geological exploration. There are deep valley,high and steep slopes on the upstream of the Yarlu Zangbo River,and there is a large dangerous rock mass,about 37.5×104 m3,in the left dam abutment of Jiexu hydropower station. By finding out occurrence boundary of the rock mass,connected state,equivalent parameters,the qualitative and quantitative methods are used to determine the overall and local stability of dangerous rock mass,buckling mode,and the corresponding control measures are put forward. It has certain guiding significance to the giant dangerous rock evaluation idea and the prevention measures.
Large dangerous rock mass located outside excavation line in hydropower project construction has a significant impact on its safety and operation. It?s difficult to reach and to reinforce them,and which put forward higher requirements to geological exploration. There are deep valley,high and steep slopes on the upstream of the Yarlu Zangbo River,and there is a large dangerous rock mass,about 37.5×104 m3,in the left dam abutment of Jiexu hydropower station. By finding out occurrence boundary of the rock mass,connected state,equivalent parameters,the qualitative and quantitative methods are used to determine the overall and local stability of dangerous rock mass,buckling mode,and the corresponding control measures are put forward. It has certain guiding significance to the giant dangerous rock evaluation idea and the prevention measures.
引文
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[11]寿冀平,韩祥银,靳丰山,等.济南燕翅山危岩体稳定性评价及防治对策[J].水文地质工程地质,2005,(3):108–110.(SHUO Jipin,HAN Xiangyin,QI Fengshan,et al.Stability evaluation and prevention measures on the Yanchishan unstable rock mass in Jinan[J].Hydrogeology and Engineering Geology,2005,(3):108–110.(in Chinese))
[12]黄润秋,许模,陈剑平,等.复杂岩体结构精细描述及其工程应用[M].北京:科学出版社,2004:56–206.(HUANG Runqiu,XU Mo,CHEN Jianpin,et al.Complex fine description of rock mass structure and its engineering application[M].Beijing:Science Press,2004:56–206.(in Chinese))
[13]张倬元.滑坡防治工程的现状与发展展望[J].地质灾害与环境保护,2000,11(2):89–97.(Zhang Zhuoyuan.The present status,technical advance and development trends of landslide remedial measures[J].Journal of Geological Hazards and Environment Preservation,2000,11(2):89–97.(in Chinese))
[14]夏元友,朱瑞赓.黄石市板岩山危岩体防治方案决策分析[J].岩石力学与工程学报,2000,19(4):498–500.(XIA Yuanyou,ZHU Ruigeng.Analysis of control decision-making of unstable rockmass in banyan mountain,Huangshi City[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(4):498–500.(in Chinese))
[2]李明,陈洪凯,叶四桥,等.重庆市洪崖洞危岩发育机制[J].中国地质灾害与防治学报,2008,19(2):1–6.(LI Ming,CHEN Hongkai,YE Siqiao,et al.Failure mechanism of Hongyadong dangerous rock mass,Chongqing[J].The Chinese Journal of Geological Hazard and Control,2008,19(2):1–6.(in Chinese))
[3]胡显明,晏鄂川,杨建国,等.巫溪南门湾危岩体稳定性分区研究[J].工程地质学报,2011,19(3):397–402.(HU Xianming,YAN Echuan,YANG Jiangn,et al.Stability assessment of unstable rock blocks at Nanmenwan in Wuxi County[J].Journal of Engineering Geology,2011,19(3):397–402.(in Chinese))
[4]陈洪凯,唐红梅.危岩主控结构面强度参数计算方法[J].工程地质学报,2008,16(1):37–41.(CHEN Hongkai,TANG Hongmei.Method for calculating strength parameters of structural planes controlling the rock block stability[J].Journal of Engineering Geology,2008,16(1):37–41.(in Chinese))
[5]陈洪凯,王蓉,唐红梅.危岩研究现状及趋势综述[J].重庆交通学院学报,2003,22(3):18–22.(CHEN Hongkai,WANG Rong,TANG Hongmei.Review on current situation to study and trend of dangerous rock mass[J].Journal of Chongqing Jiaotong University,2003,22(3):18–22.(in Chinese))
[6]王在泉,张黎明,贺俊征.岩石边坡工程块体系统稳定性预测、监测、控制[J].岩石力学与工程学报,2004,23(10):1 658–1 661.(WANG Zaiquan,ZHANG Liming,HE Junzheng.Stability prediction,monitoring and control of key block system in rock slope engineering[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(10):1 658–1 661.(in Chinese))
[7]HUANG R Q,LIU W H,ZHOU J P,et al.Experimental field study of movement characteristics of rock blocks falling down a slope[J].Journal of Earth Science,2010,21(3):330–339.
[8]AREF M,NEI L,ABDO S,et al.Causes of rockfalls in AiHuway-shah area,Yemen[J].Global Geology,2009,12(1):5–12.
[9]黄达,黄润秋,裴向军,等.溪洛渡水电站某危岩体稳定性及加固措施研究[J].岩土力学,2008,29(5):1 425–1 429.(HUANG Da,HUANG Runqiu,PEI Xiangjun,et al.Study on stability and reinforcement measures of an unstable rock masses of Xiluodu hydropower station[J].Rock and Soil Mechanic,2008,29(5):1 425–1 429.(in Chinese))
[10]刘传正,张明霞.长江三峡链子崖危岩体防治工程研究[J].岩石力学与工程学报,1999,18(5):497–502.(LIU Chuanzheng,ZHANG Mingxia.Research on the control engineering of Lianziya dangerous rockbody in the Three Gorges of Yangtze River[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(5):497–502.(in Chinese))
[11]寿冀平,韩祥银,靳丰山,等.济南燕翅山危岩体稳定性评价及防治对策[J].水文地质工程地质,2005,(3):108–110.(SHUO Jipin,HAN Xiangyin,QI Fengshan,et al.Stability evaluation and prevention measures on the Yanchishan unstable rock mass in Jinan[J].Hydrogeology and Engineering Geology,2005,(3):108–110.(in Chinese))
[12]黄润秋,许模,陈剑平,等.复杂岩体结构精细描述及其工程应用[M].北京:科学出版社,2004:56–206.(HUANG Runqiu,XU Mo,CHEN Jianpin,et al.Complex fine description of rock mass structure and its engineering application[M].Beijing:Science Press,2004:56–206.(in Chinese))
[13]张倬元.滑坡防治工程的现状与发展展望[J].地质灾害与环境保护,2000,11(2):89–97.(Zhang Zhuoyuan.The present status,technical advance and development trends of landslide remedial measures[J].Journal of Geological Hazards and Environment Preservation,2000,11(2):89–97.(in Chinese))
[14]夏元友,朱瑞赓.黄石市板岩山危岩体防治方案决策分析[J].岩石力学与工程学报,2000,19(4):498–500.(XIA Yuanyou,ZHU Ruigeng.Analysis of control decision-making of unstable rockmass in banyan mountain,Huangshi City[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(4):498–500.(in Chinese))