|本期目录/Table of Contents|

[1]周永利,王建明.降雨诱发含后缘裂缝岩质边坡失稳机制研究[J].中国安全生产科学技术,2019,15(4):103-108.[doi:10.11731/j.issn.1673-193x.2019.04.016]
 ZHOU Yongli,WANG Jianming.The research on instability mechanism of rock slope with trailing edge cracks induced by rainfall[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(4):103-108.[doi:10.11731/j.issn.1673-193x.2019.04.016]
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降雨诱发含后缘裂缝岩质边坡失稳机制研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年4期
页码:
103-108
栏目:
职业安全卫生管理与技术
出版日期:
2019-04-30

文章信息/Info

Title:
The research on instability mechanism of rock slope with trailing edge cracks induced by rainfall
文章编号:
1673-193X(2019)-03-0103-06
作者:
周永利1王建明2
(1. 神华准格尔能源有限责任公司,内蒙古 鄂尔多斯 010300;2. 中国矿业大学(北京) 力学与建筑工程学院,北京 100083)
Author(s):
ZHOU Yongli1WANG Jianming2
(1. Shenhua Zhungeer Energy Co. Ltd, Inner Mongolia Ordas 010300, China;2. School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China)
关键词:
裂缝扩展突变理论裂缝水压岩质边坡
Keywords:
crack propagation catastrophe theory fractured water pressure rock slope
分类号:
X936; TD824
DOI:
10.11731/j.issn.1673-193x.2019.04.016
文献标志码:
A
摘要:
为探讨降雨诱发边坡失稳机制,以突变理论为基础,综合考虑边坡滑体后缘裂缝静水压力、滑动面水压力和水致弱化的影响,推导了坡体突变失稳的力学判据。研究结果表明:降雨作用下岩质边坡失稳与后缘裂缝充水高度、水致弱化函数、滑体几何-力学参数有关;裂缝与滑动面导通后,坡体发生突变失稳的必要条件为水致弱化段长度远大于弹性段长度;裂缝充水高度d越大,水致弱化函数f(ω)越小,发生失稳可能性越大。
Abstract:
To investigate the mechanism of rainfall induced slope instability, based on the catastrophe theory, which the influences of hydrostatic pressure, water pressure of sliding surface and water induced weakening on the crack at the back edge of the slope sliding body are comprehensively considered. the mechanical criterion for sudden failure of slope is derived.Results show that the instability of rock slope under rainfall is related to the waterfilling height of the trailing edge crack, the waterinduced weakening function and the geometricmechanical parameters of the sliding body. After the crack penetrated with weak intercalation, it is necessary for the catastrophe instability of the slope that the length of the weakening section of the waterinduced damage is much larger than the length of the elastic section. The larger the crack filling height d, the smaller the waterinduced weakening function f(ω), the greater the possibility of instability.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2019-02-21
基金项目: 国家重点研发计划(2016YFC0801602);国家重点研发计划(2017YFC1503103)
作者简介: 周永利,硕士,主要研究方向为科技创新、知识产权管理。
通信作者: 王建明,博士研究生,主要研究方向为边坡稳定性、地下采矿工程。
更新日期/Last Update: 2019-05-09