深厚覆盖层结构面及软弱夹层诊断与定位——以金沙江下游乌东德水电站坝址为例

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摘要深厚覆盖层是一种特殊工程地基。其结构松散、岩性不连续、成因类型及岩土体结构组成复杂、物理力学性质呈非均质性分布。深厚覆盖层中的结构面、软弱夹层呈非连续性分布，给分层带来困难，是目前尚未解决的热点工程地质问题。结合乌东德水电站坝址深厚覆盖层分层进行实测试验，依据孔间电磁波Color-CT成像结果，揭示出深厚覆盖层内保存有完好的软弱夹层地质事件证据。以孔间Color-CT成像为研究对象，采用非线性计算岩土体吸收系数，将岩土体结构面进行阈值划分，把不同结构面区域标定出来，最终通过面积、位置参数、形状等特征划分出软弱夹层区域，定位出孔间剖面内软弱夹层个体数量和空间分布。

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关键词 ：水利工程, 金沙江下游, 软弱夹层, 深厚覆盖层, 孔间Color-CT成像, 电站坝基

Abstract：Deep overburden layer is a special engineering foundation. It is distributed non-uniformly in loose structure，lithologic discontinuity，genetic type and rock-soil structure，physico-mechanical properties. The structure plane in deep overburden and weak intercalated layers distribute discontinuously，which make it difficult to identify those layers. It is currently an unsolved hotspot problem of engineering geology. Field experiments to identify the deep overburden layers were implemented at Wudongde hydropower station. The geological evidence is revealed that the intact weak intercalated layers are preserved in the deep overburden layer based on cross-well electromagnetic wave Color-CT imaging findings. Through the study of cross-well Color-CT images，the threshold values are selected for separating the structure planes of rock and soil mass and the regions of different structure planes are calibrated，using the nonlinear calculation of the absorption coefficients of rock and soil mass. Finally，the weak intercalated layer regions are located based on the feature parameters of area，location and shape. The quantity and spatial distribution of the weak intercalated layers in the cross-section between holes are defined.

Key words： hydraulic engineering downstream of Jinsha River weak intercalated layers deep overburden layer cross-well Color-CT imaging dam foundation of power station

收稿日期: 2012-07-11

引用本文:

黎华清1，甘伏平1，陈玉玲1，程展林2，饶锡保2，肖国强2. 深厚覆盖层结构面及软弱夹层诊断与定位——以金沙江下游乌东德水电站坝址为例[J]. 岩石力学与工程学报, 2013, 32(s2): 3486-3492.
LI Huaqing1，GAN Fuping1，CHEN Yuling1，CHENG Zhanlin2，RAO Xibao2，XIAO Guoqiang2. DIAGNOSING AND LOCATING OF DEEP OVERBURDEN STRUCTURAL PLANE AND WEAK INTERCALATED LAYERS TAKING WUDONGDE HYDROPOWER STATION DAM SITE AT DOWNSTREAM OF JINSHA RIVER FOR EXAMPLE. , 2013, 32(s2): 3486-3492.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/3486

[1]	黎华清，徐远光，甘伏平，等. 孔间电磁波CT法在左江电站火成岩坝基风化结构评价中的应用[J]. 岩土力学，2010，31(增1)：430-434.(LI Huaqing，XU Yuanguang，GAN Fuping，et al. Application of cross-well electromagnetic wave CT technique to evaluating weathered igneous rock dam structure of Zuojiang River power station[J]. Rock and Soil Mechanics，2010，31(Supp.1)：430-434.(in Chinese)) " target="_blank">
[2]	王思敬，李国和. 金沙江流域区域地壳稳定性分区与定量评价[J].工程地质学报，1998，6(4)：289-300.(WANG Sijing，LI Guohe. Quantitative assessment and zonation of regional crustal stability in the Jinsha River Basin[J]. Journal of Engineering Geology，1998，6(4)：289-299.(in Chinese))
[3]	谷德振，黄鼎成. 岩体结构的分类及其质量系数的确定[J]. 水文地质工程地质，1979，(2)：8-13.(GU Dezhen，HUANG Dingcheng. The rock mass structure classification and quality coefficient[J]. Hydrogeology and Engineering Geology，1979，(2)：8-13.(in Chinese)) " target="_blank">
[4]	周维垣. 岩土体工程结构的稳定性[J]. 岩石力学与工程学报，2010，29(9)：1 729-1 753.(ZHOU Weiyuan. Structure stability of rock mass engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(9)：1 729-1 753.(in Chinese)) " target="_blank">
[5]	赵然惠，周瑞光，孙广忠. 软弱结构面的工程力学效应[J]. 工程勘察，1981，(6)：56-59.(ZHAO Ranhui，ZHOU Ruiguang，SUN Guangzhong. The engineering mechanics effect of the weak structure[J]. Geotechnical Investigation and Surveying，1981，(6)：56-59.(in Chinese)) " target="_blank">
[6]	王仁坤，林鹏，周维垣. 复杂地基上高拱坝开裂与稳定研究[J]. 岩石力学与工程学报，2007，26(10)：1 951-1 958.(WANG Renkun，LIN Peng，ZHOU Weiyuan. Study on cracking and stability problems of high arch dams on complicated foundations[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：1 951-1 958.(in Chinese)) " target="_blank">
[7]	吴世泽，严福章，梅应堂. 金沙江乌东德水电站区热水塘断层活动性研究[J]. 工程地质学报，2005，13(4)：455-460.(WU Shize，YAN Fuzhang，MEI Yingtang. Activities of the reshuitang fault at the damsite region of the Wudongde hydropower station on the Jinsha River[J]. Journal of Engineering Geology，2005，13(4)：455-460.(in Chinese))
[8]	徐永辉，杨达源，陈可锋，等. 金沙江金坪子堆积体地貌过程与稳定性研究[J]. 工程地质学报，2007，15(2)：169-173.(XU Yonghui，YANG Dayuan，CHEN Kefeng，et al. Geomorphologic evolution and stability of Jinpingjis debris deposits at Wudongde valley of Jinsha River[J]. Journal of Engineering Geology，2007，15(2)：169-173.(in Chinese))
[9]	李会中，翁金望，王团乐. 乌东德水电站坝址岩体变形试验与地质分析[J]. 人民长江，2008，39(19)：1-5.(LI Huizhong，WENG Jinwang，WANG Tuanle. Deformation test and geologic analysis of rock mass at dam site of Wudongde hydropower station[J]. Yangtze River，2008，39(19)：1-5.(in Chinese)) " target="_blank">
[10]	赵凯华，钟锡华. 光学(下册)[M]. 北京：北京大学出版社，1984：223-228.(ZHAO Kaihua，ZHONG Xihua. Optics(2nd volume)[M]. Beijing：Peking University Press，1984：223-228.(in Chinese)) " target="_blank">
[11]	黎华清，陈滋康. 跨孔电磁波多频CT成像技术在岩溶地区的应用研究[R]. 桂林：中国地质科学院岩溶地质研究所，1996.(LI Huaqing，CHEN Zikang. Cross-well electromagnetic wave frequency CT imaging technique application in karst area of Guilin[R]. Guilin：Chinese Academy of Geological Sciences Institute of Karst Geology，1996.(in Chinese)) " target="_blank">
[12]	唐川，黄润秋，黄达，等. 金沙江美姑河牛牛坝水电站库区泥石流对工程影响分析[J]. 工程地质学报，2006，14(2)：145-151. (TANG Chuan，HUANG Runqiu，HUANG Da，et al. Impacts of debris flows on the resereoir of a hydropower station in the Meigu River of Jinshajiang[J]. Journal of Engineering Geology，2006，14(2)：145-151.(in Chinese))
[13]	殷跃平，张加桂，陈宝荪，等. 三峡库区巫山移民新城址松散堆积体成因机制研究[J]. 工程地质学报，2000，8(3)：265-271.(YIN Yueping，ZHANG Jiagui，CHEN Baosun，et al. Formationg mechanism of large-scale loose sediment at the relocation sites of Wushan County on the Three-Gorges[J]. Journal of Engineering Geology，2000，8(3)：265-271.(in Chinese))
[14]	王治华. 金沙江下游的滑坡和泥石流[J]. 地理学报，1999，54(2)：142-149.(WANG Zhihua. Landslides and debris flows in the lower reach of the Jinsha River[J]. Acta Geographica Sinica，1999，54(2)：142-149.(in Chinese)) " target="_blank">
[15]	刘衡秋，胡瑞林，曾如意. 云南虎跳峡两家人松散堆积体的基本特征及成因探讨[J]. 第四纪研究，2005，25(1)：100-106.(LIU Hengqiu，HU Ruilin，ZENG Ruyi. Analysis of the basic features and the formation mechanism of Liangjiaren loose deposits in Tiger-Leaping- Gorge，Yunnan[J]. Quaternary Sciences，2005，25(1)：100-106.(in Chinese))
[16]	杨天俊. 深厚覆盖层岩组划分及主要工程地质问题[J]. 水利发电，1998，(6)：17-19.(YANG Tianjun. Classification of deep and thick overlying rock group and their main engineering geological problems[J]. Water Power，1998，(6)：17-19.(in Chinese)) " target="_blank">