采空区残余沉降对深挖边坡稳定性的影响

范永丰; 罗锦; 徐衍; 郭庆彪; 万战胜

doi:10.3724/j.gyjzG22090705

采空区残余沉降对深挖边坡稳定性的影响

doi: 10.3724/j.gyjzG22090705

范永丰¹,
罗锦^2, ,,
徐衍³,
郭庆彪²,
万战胜⁴

1. 河南省新融高速公路建设有限公司, 河南洛阳 471000;
2. 安徽理工大学空间信息与测绘工程学院, 安徽淮南 232001;
3. 安徽理工大学地球与环境学院, 安徽淮南 232001;
4. 河南省交通规划设计研究院股份有限公司, 郑州 450000

基金项目:

国家自然科学基金项目（51904008）；河南省交通运输厅科技项目（2019J-2-15）。

详细信息

作者简介:
范永丰，博士，教授级高级工程师，主要从事工程管理研究工作，1219849241@qq.com。

通讯作者:
罗锦，博士研究生，主要从事矿山开采沉陷和岩层控制研究工作，Luo1395996229@163.com。

计量
- 文章访问数: 31
- HTML全文浏览量: 2
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2022-09-07
- 网络出版日期: 2024-05-29

Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes

1. Henan Xinrong Expressway Construction Co., Ltd., Luoyang 471000, China;
2. School of Spatial Informatics and Geomatics Engineering, Anhui University of Sciences and Technology, Huainan 232001, China;
3. School of Earth and Environment, Anhui University of Sciences and Technology, Huainan 232001, China;
4. Henan Provincial Communications Planning & Design Institute Co., Ltd., Zhengzhou 450000, China

摘要

摘要: 采空区残余沉降对高速公路的稳定性会有很大的影响，为分析高速公路下采空区残余沉降对高陡边坡稳定性的影响，设计了多组试验方案，对高陡边坡的稳定性进行分析。通过完成深挖边坡稳定性优化研究，得出坡角是影响边坡稳定性的主要因素，其次为坡高、岩体的内摩擦角、黏聚力和岩体的重度。以实际工程为例分别得出了黏聚力、内摩擦角与边坡安全系数的关系式以及同时减小黏聚力、内摩擦角时边坡安全系数的计算式。结果证明：采空区残余沉降严重影响深挖边坡的稳定性。残余沉降等效模拟可为采空区残余沉降对边坡稳定性的影响评定提供参考。
- 边坡稳定性 /
- 强度折减 /
- 参数敏感性 /
- 残余沉降 /
- 等效模拟
Abstract: The residual settlement in goafs has a great influence on the stability of expressways. To analyze the influence of residual settlement in goafs under expressways on the stability of high and steep slopes, several test schemes were designed and stabillty analysis of high and steep slopes was performed. By the optimization study for the stability of deeply excavated slopes, it was concluded that the slope angle was the main factor affecting the stability of slopes, followed by the slope height, the internal friction angle and cohesion of rock masses, and the gravity densities of rock masses. The relational formulas between cohesion and slope safety factors, internal friction angle and slope safety factors were obtained, and the safety factor formula of slopes in simultaneous reduction of cohesion and internal friction angle was also obtained. The result showed that the residual settlement in goafs seriously affected the stability of deeply excavated slopes. The equivalent simulations of residual settlement could provide reference to influence evaluation of residual settlement on stability of deeply excavated slopes in goafs.
- slope stability /
- strength reduction /
- parameter sensitivity /
- residual settlement /
- equivalent simulation

HTML全文

参考文献(16)

[1]	吕爱钟,贾晓阳.边坡危险滑动面及稳定安全系数的力学解析方法[J].工程地质学报:2022, 30(1):110-116.
[2]	李永钊,潘本金,惠军武,等.深挖方路堑边坡三同步施工技术[J].公路, 2020, 65(9):347-352.
[3]	胡江,张吉康,余梦雪,等.深挖方膨胀土渠道边坡变形特征分析与预测[J].水利水运工程学报, 2021(4):1-9.
[4]	FELLENIUS W. Calculation of the stability of earth dams[C]//Transactions of the 2nd international Congress on Large Dams. Washington:International Commission on Large Dams, 1936:445-459.
[5]	湛正刚,程瑞林,孙卫,等.水库区大型堆积体灾变分析及对策研究[J].岩土工程学报, 2022, 44(1):194-200 , 208.
[6]	周博,汪华斌,江彬,等.基于FEM和滑移线场理论的深挖路堤稳定性分析[J].武汉大学学报(工学版), 2018, 51(12):1072-1079.
[7]	胥孝川,王忠康,叶鲁青,等.基于二级层次分析的模糊综合评判法评价露天矿边坡稳定性[J].矿业研究与开发, 2022, 42(5):76-81.
[8]	王瑞鹏,王金安.西露天矿边坡失稳影响因素分析[J].矿业研究与开发, 2022, 42(1):64-70.
[9]	杨婷婷,杨永森,邱流潮.基于物质点法的土体流动大变形过程数值模拟[J].工程地质学报, 2018, 26(6):1463-1472.
[10]	叶帅华,张玉巧,房光文.黄土深挖方边坡的稳定性影响因素及其变形规律[J].兰州理工大学学报, 2021, 47(3):120-126.
[11]	赵尚毅,郑颖人,张玉芳.极限分析有限元法讲座:Ⅱ有限元强度折减法中边坡失稳的判据探讨[J].岩土力学, 2005(2):332-336.
[12]	宋二祥.土工结构安全系数的有限元计算[J].岩土工程学报, 1997(2):4-10.
[13]	栾茂田,武亚军,年廷凯.强度折减有限元法中边坡失稳的塑性区判据及其应用[J].防灾减灾工程学报, 2003(3):1-8.
[14]	王强,付厚利,秦哲,等.基于正交改进和Geo-slope边坡稳定性因素敏感性分析[J].金属矿山, 2017(12):130-135.
[15]	郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报, 2004(19):3381-3388.
[16]	俞顺,郭庆彪,车安刚,等.武云高速建设场地残余沉降及治理对策研究[J].煤炭工程, 2018, 50(3):126-130.