土工基础

土工基础 ›› 2022, Vol. 36 ›› Issue (2): 139-144.

• 工程实录 • 上一篇    下一篇

桂林市某山危岩破坏机制及治理

谭明灿1，刘之葵1，李善梅1，何添杰1，席丹妮1，倪喆1 ， 王翔2   

  1. （1.桂林理工大学 土木与建筑工程学院，广西桂林  541004；2.广西地质环境监测站，广西桂林  541004）
  • 收稿日期:2020-11-20 修回日期:2020-11-30 出版日期:2022-04-30 发布日期:2022-04-26
  • 通讯作者: 刘之葵(1968-)，男，博士，教授，博士生导师，研究方向为岩土工程。
  • 作者简介:谭明灿(1994-)，男，硕士生，研究方向为岩土工程。
  • 基金资助:
    国家自然科学基金项目(41867039)；广西自然科学基金项目(2018GXNSFAA138139，2017GXNSFAA198238)；广西高等学校高水平创新团队及卓越学者计划项目(桂教人201738-2)；南方石山地区矿山地质环境修复工程技术创新中心资助项目（CXZX2020-002）

The Rockfall Failure Modes and Mitigations in Guilin

TAN Mingcan1, LIU Zhikui1, LI Shanmei1, HE Tianjie1, XI Danni1, NI Zhe1， WANG Xiang2   

  1. (1.School of Civil and Architectural Engineering, Guilin University of Technology, Guilin 541004；
    2.Guilin Station, Guangxi Geological Environment Monitoring Station, Guilin 541004)
  • Received:2020-11-20 Revised:2020-11-30 Online:2022-04-30 Published:2022-04-26

摘要： 桂林市因独特地形地貌形成受人瞩目的自然景观，但也因此产生多种地质灾害。以桂林市某山危岩崩塌预测区为例，研究该地区危岩形态、地形岩性、结构特征、破坏变形模式，分析其破坏机制，通过定量稳定性评价，将该地区危岩破坏分为滑移式、倾倒式、坠落式三种方式，运用RocFall软件对危岩崩塌落石运动进行数值模拟，对崩塌落石的运动轨迹、落石方向、弹跳高度进行模拟计算，提出采用静态爆破技术和被动防护网的治理措施。

关键词: 危岩体, 破坏, 形成机制, 稳定性分析, 治理方案

Abstract: While a spectacular natural landform has formed in Guilin due to the special karstic topographies, many geo-hazards have also encountered consequently. This paper presents the rock fall hazards evaluation methods in Guilin area. The potentially dangerous rock cliff formation, lithology, tectonic formation and failure modes are evaluated and analyzed. Throughout the quantitative stability evaluation, the rock failure potentials in this area could be divided into three types: sliding, toppling and falling, the commercial Rocfall software was used to simulate the rock trajectory, direction of the rock fall and rebounded height. This paper provides the potential mitigation measures such as the static blasting and passive protective rockfall net.

Key words: dangerous rock mass, damage, formation mechanism, stability analysis, mitigation measures

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