张天贵, 吴碧辉, 覃雯, 马飞. 2017: 三峡库区巫峡危岩体变形失稳特征及防治研究. 工程地质学报, 25(s1): 266-273. DOI: 10.13544/j.cnki.jeg.2017.s1.043
    引用本文: 张天贵, 吴碧辉, 覃雯, 马飞. 2017: 三峡库区巫峡危岩体变形失稳特征及防治研究. 工程地质学报, 25(s1): 266-273. DOI: 10.13544/j.cnki.jeg.2017.s1.043
    ZHANG Tiangui, WU Bihui, QIN Wen, MA Fei. 2017: DEFORMATION AND, INSTABILITY CHARACTERISTICS, AND PREVENTION, AND TREATMENT, OF THE, DANGEROUS ROCK, MASS IN, WUXIA GORGE, IN THREE, GORGES RESERVOIR. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 266-273. DOI: 10.13544/j.cnki.jeg.2017.s1.043
    Citation: ZHANG Tiangui, WU Bihui, QIN Wen, MA Fei. 2017: DEFORMATION AND, INSTABILITY CHARACTERISTICS, AND PREVENTION, AND TREATMENT, OF THE, DANGEROUS ROCK, MASS IN, WUXIA GORGE, IN THREE, GORGES RESERVOIR. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 266-273. DOI: 10.13544/j.cnki.jeg.2017.s1.043

    三峡库区巫峡危岩体变形失稳特征及防治研究

    DEFORMATION AND, INSTABILITY CHARACTERISTICS, AND PREVENTION, AND TREATMENT, OF THE, DANGEROUS ROCK, MASS IN, WUXIA GORGE, IN THREE, GORGES RESERVOIR

    • 摘要: 长江三峡库区地质条件复杂,巫山县巫峡峡口,主要分布地层为三叠系大冶组及嘉陵江组灰岩,其中长江北岸以反倾岩质库岸为主,在漫长的地质历史演化过程中,形成了多段稳定性差的岸坡及危岩,三峡水库蓄水后其稳定性进一步恶化。在三峡水库175m试验性蓄水后两个月后(2008年11月23日)龚家坊危岩发生38104m3崩塌,产生的涌浪高13m,严重威胁长江航道的安全。巫峡具有地形高差大、坡度陡、潜在崩滑体规模大、防治难度大的特点。本文通过对巫峡北岸龚家坊至独龙一段危岩体变形失稳特征进行研究的基础上,对稳定性差的库岸的防治措施进行研究探讨,对岸坡危岩综合整治具有一定的参考价值。

       

      Abstract: The geological conditions in the Three Gorges Reservoir area of the Yangtze River are complicated. The main distribution strata of the Wuxia Gorge narrows in Wushan County are the Triassic Daye Formation and the Jialingjiang Formation limestone, in which the north bank of the Yangtze River is dominated by the anti-dip rocky reservoir bank. In the long geological history of the evolutionary process, a number of bank slopes and dangerous rocks of poor stability have been formed, resulting in further deterioration of the stability of the Three Gorges reservoir after impoundment. On November 23, 2008(two months after the 175m experimental impoundment of the Three Gorges Reservoir), 380000m3 dangerous rock at Gongjiafang collapsed, generating a surge with a height of 13m, which was a serious threat to the safety of the Yangtze River channel. Wuxia Gorge is characterized by large terrain height difference, steep slope, large scale of the potential landslide body and difficult to control. Based on the study of the deformation and instability characteristics of a section of the dangerous rock mass between Gongjiafang and Dulong on the north bank of the Wuxia River, the prevention and control measures of the reservoir bank of poor stability were researched and discussed, providing a certain reference value for the comprehensive improvement of the dangerous rock slope.

       

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