|本期目录/Table of Contents|

[1]李庶林,赵睿鸣,彭府华,等.基于强度折减法的高陡边坡滑坡治理稳定性分析[J].建筑科学与工程学报,2020,37(01):120-126.[doi:10.19815/j.jace.2018.07090]
　LI Shu-lin,ZHAO Rui-ming,PENG Fu-hua,et al.Stability Analysis of Treatment of High-steep Slope Landslide Based on Strength Reduction Method[J].Journal of Architecture and Civil Engineering,2020,37(01):120-126.[doi:10.19815/j.jace.2018.07090]
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基于强度折减法的高陡边坡滑坡治理稳定性分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年01期
页码:
120-126
栏目:
出版日期:
2020-01-30

文章信息/Info

Title:
Stability Analysis of Treatment of High-steep Slope Landslide Based on Strength Reduction Method
文章编号:
1673-2049(2020)01-0120-07
作者:
李庶林1,赵睿鸣1,彭府华2,陈东霞1
(1. 厦门大学 建筑与土木工程学院,福建 厦门 361005; 2. 长沙矿山研究院,湖南 长沙 410012)
Author(s):
LI Shu-lin1, ZHAO Rui-ming1, PENG Fu-hua2, CHEN Dong-xia1
(1. School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2. Changsha Institute of Mining Research, Changsha 410012, Hunan, China)
关键词:
露天矿;  高陡边坡;  稳定性分析;  滑坡治理;  强度折减法;  数值模拟
Keywords:
open-pit;  high-steep slope;  stability analysis;  landslide treat;  strength reduction method;  numerical simulation
分类号:
TU413
DOI:
10.19815/j.jace.2018.07090
文献标志码:
A
摘要:
针对三道庄露天矿观礼台下方发生的高陡边坡滑坡进行了稳定性分析,并论证了滑坡治理工程的效果。在实地勘探、实验室测试的基础上得到岩土体强度参数等数据,建立原始边坡有限元模型,再加入预应力锚索、锚杆、抗滑桩、挡土墙、灌浆浇筑等支护措施,基于强度折减法建立治理后边坡有限元模型,得出数值模拟结果。对比分析了边坡滑坡处理前后安全系数、塑性应变、位移、构件内力。结果表明:原始边坡安全系数为1.175,应变主要集中于边坡外部碎石、块石松散堆积体与内部中风化片岩交界处,滑移带位置浅; 边坡较易发生局部破坏,整体性及稳定性差; 经治理加固后,预应力锚索、抗滑桩等支护结构充分发挥加固作用,将外部松散堆积体与内部中风化片岩有效固定在一起; 边坡整体性提升,安全系数上升至1.452,边坡滑移带整体位置由浅入深,主要位于中风化片岩内,破坏类型转变为不易发生的整体破坏; 三道庄露天矿边坡下方高陡边坡治理工程效果良好,边坡稳定性得到显著改善。
Abstract:
The stability of the high-steep slope landslide under the observation platform of Sandaozhuang open-pit was analyzed, and the effect of the landslide treatment project was demonstrated. On the basis of field exploration and laboratory test, the strength parameters of rock and soil were obtained, and the original finite element model of slope was established. Then based on the strength reduction method, the supporting measures such as prestressed anchor cable, anchor bolt, anti-slide pile, retaining wall and grouting were added to establish the finite element model of the slope after treatment, and the numerical simulation results were obtained. The results of slope safety factor, plastic strain, displacement and internal force of components before and after landside treatment were compared and analyzed. The results show that the safety factor of the original slope is 1.175, and the strain is mainly concentrated at the junction of the gravel outside the slope, the loose accumulation of block stone and the moderately weathered schist inside, and the slip zone is shallow. The slope is easy to be damaged locally, with poor integrity and stability. After treatment and reinforcement, the prestressed anchor cable, anti-slide pile and other supporting structures give full play to the reinforcement effect, and effectively fix the external loose accumulation body and the internal moderately weathered schist together. The slope integrity is improved, the safety factor is increased to 1.452, the overall position of the slope slip zone is from shallow to deep, mainly located in the moderately weathered schist, and the failure type is changed into the overall failure that is not easy to occur. The high-steep slope under the slope of Sandaozhuang open-pit has achieved good results, and the slope stability has been significantly improved.

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备注/Memo

备注/Memo:
收稿日期:2019-04-21
基金项目:国家自然科学基金项目(51674218)
作者简介:李庶林(1963-),男,江西九江人,教授,工学博士,E-mail:shulin.li@163.com。
更新日期/Last Update: 2020-01-13