| 水力作用下岩质斜坡破坏机制和稳定性分析研究现状 |
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| 引用本文： | 刘新荣,熊飞,李滨,杨忠平,周小涵.水力作用下岩质斜坡破坏机制和稳定性分析研究现状[J].中国岩溶,2020,39(4):547-558. |
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| 作者姓名： | 刘新荣 熊飞 李滨 杨忠平 周小涵 |
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| 作者单位： | 1.重庆大学土木工程学院/重庆大学库区环境地质灾害防治国家地方联合工程研究中心/重庆大学煤矿灾害动力学与控制国家重点实验室 |
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| 基金项目： | 国家重点研发计划(2018YFC1504802) |
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| 摘 要： | 基于国内外研究现状和岩质滑坡案例，总结出岩质滑坡的水力致灾机制，归纳考虑水力作用下的岩质斜坡主要失稳破坏模式，评述了岩质斜坡稳定性分析方法。岩质滑坡的水力致灾机制主要由于水对滑体产生的静水压力（岩体侧面的推力、滑面的扬压力和岩体的浮力）和动水压力（向坡外的渗透力）作用。从渗流—应力耦合的角度可较全面评价水渗流对坡体稳定性的影响。斜坡的岩体结构决定了水力作用方式和坡体的失稳破坏形式，考虑水力作用下的岩质斜坡失稳破坏形式主要有:顺层滑动、平推式滑动、楔形体滑移和危岩的崩塌。对于水力作用下岩质斜坡的稳定性分析方法主要有极限平衡法、有限元强度折减法、基于断裂力学的危岩稳定性分析法和渗流—应力耦合模型分析法，其中前两种方法应用较为广泛。
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| 关 键 词： | 岩质滑坡 水力作用 致灾机制 滑坡模式 稳定性分析 |
Current situation of research on failure mechanism and stability of rock slopes under hydraulic action |
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| LIU Xinrong,XIONG Fei,LI Bin,YANG Zhongping,ZHOU Xiaohan.Current situation of research on failure mechanism and stability of rock slopes under hydraulic action[J].Carsologica Sinica,2020,39(4):547-558. |
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| Authors: | LIU Xinrong XIONG Fei LI Bin YANG Zhongping ZHOU Xiaohan |
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| Institution: | 1.School of Civil Engineering， Chongqing University/National Joint Engineering Research Center of Geohazards Prevention in The Reservoir Area（Chongqing）， Chongqing University/State Key Laboratory of Coal Mine Disaster Dynamics and Control， Chongqing University2.School of Civil Engineering， Chongqing University/National Joint Engineering Research Center of Geohazards Prevention in The Reservoir Area（Chongqing）， Chongqing University3.Institute of Geomechanics， CAGS |
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| Abstract: | Water is one of the important factors triggering landslides， and its physical， chemical and mechanical effects on rock mass determine the slope stability. Based on the current domestic and foreign research status and study cases of rock-slope landslides， this paper summarizes the hydraulic hazard-causing mechanism and the main failure models of rock-slope failure， and reviews the analysis methods of rock slope stability considering hydraulic action. It is generally accepted that the hydrostatic pressure generated by water to the sliding body （push of the rock mass side， uplift pressure of the sliding surface and buoyancy of rock mass） and hydrodynamic pressure （penetration outward the slope） are the main mechanisms of hydraulically induced rock-slope landslides. From the perspective of seepage flowing-stress coupling， the influence of water seepage on slope stability can be comprehensively evaluated. The rock mass structure of the slope determines the hydraulic action mode and the failure mode of the slope. The main forms of instability failure of rock slopes considering hydraulic action include bed slip， horizontal sliding， wedge sliding and perilous rock collapse. The stability analysis methods for rock slopes under hydraulic action mainly include the limit equilibrium method， the finite element strength reduction method， the perilous rock stability analysis method based on fracture mechanics， and the seepage-stress coupling model analysis method， among which the first two methods are widely used. |
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