魏云杰, 褚宏亮, 庄茂国, 王灿峰, 柏永岩. 2016: 四川省峨眉山市王山-抓口寺滑坡成因机理研究. 工程地质学报, 24(3): 477-483. DOI: 10.13544/j.cnki.jeg.2016.03.018
    引用本文: 魏云杰, 褚宏亮, 庄茂国, 王灿峰, 柏永岩. 2016: 四川省峨眉山市王山-抓口寺滑坡成因机理研究. 工程地质学报, 24(3): 477-483. DOI: 10.13544/j.cnki.jeg.2016.03.018
    WEI Yunjie, CHU Hongliang, ZHUANG Maoguo, WANG Canfeng, BAI Yongyan. 2016: FORMATION MECHANISM OF WANGSHAN-ZHUAKOUSHI LANDSLIDE IN EMEI CITY, SICHUAN PROVINCE. JOURNAL OF ENGINEERING GEOLOGY, 24(3): 477-483. DOI: 10.13544/j.cnki.jeg.2016.03.018
    Citation: WEI Yunjie, CHU Hongliang, ZHUANG Maoguo, WANG Canfeng, BAI Yongyan. 2016: FORMATION MECHANISM OF WANGSHAN-ZHUAKOUSHI LANDSLIDE IN EMEI CITY, SICHUAN PROVINCE. JOURNAL OF ENGINEERING GEOLOGY, 24(3): 477-483. DOI: 10.13544/j.cnki.jeg.2016.03.018

    四川省峨眉山市王山-抓口寺滑坡成因机理研究

    FORMATION MECHANISM OF WANGSHAN-ZHUAKOUSHI LANDSLIDE IN EMEI CITY, SICHUAN PROVINCE

    • 摘要: 2015年6月14日,受连续强降雨影响,峨眉山市九里镇兴阳村王山-抓口寺不稳定斜坡发生滑动,威胁27户52人的安全,由于当地政府提前组织人员紧急撤离,滑坡未造成人员伤亡,直接经济损失约为500万元,间接经济损失3000余万元。通过现场调查和模拟计算,结果表明:(1)滑坡稳定性受凝灰岩夹层控制,受早期采矿开挖和512汶川地震影响,岩体结构破碎,其稳定性处于临界状态,属于滑移-拉裂型; (2)降雨是导致滑坡形成的直接因素,降雨入渗后并转化为地下水,沿凝灰岩夹层上层面流动,滑坡稳定性系数逐渐降低,在重力作用下发生失稳破坏; (3)通过现场调查和分析,总结了滑坡应急避险成功经验及措施。

       

      Abstract: On June 14, 2015, an unstable slope in Xingyang village Jiuli town Ermeishan city begun to slide after continuous rainfall. It was named as Wangshan-zhuakousi landslide. It threatened more than 52 people and their property. It also caused a direct economic loss of about 5million RMB, and an indirect economic loss of more than 30million RMB. Due to timely and effective emergency evacuation by the local government organization, the landslide had no casualties. On the basis of field investigation and simulation calculation, the conclusions are as follows:(1)the landslide is belonged to the slip-cracking type. Its stability is governed by tuff interlayers. In meanwhile, the rock mass structure of landslide was crushed by the early mining excavation and 512 Wenchuan earthquake, which made the stability of landslide in critical condition.(2)Rainfall was the direct triggering factor of landslide formation. The rainfall mainly infiltrated the rock mass and became the groundwater which flowed along the tuff layer. With its weight increasing, stability coefficient of landslide was gradually reduced until high-speed landslide happened.(3)According to the characteristics of landslide in basalt area, the corresponding landslide emergency safety measures are summarizes.

       

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