文章编号：1004－5422(2022)01－0089－08

DOI:10.3969/j.issn.1004-5422.2022.01.015

基于UDEC的矿山开采区斜坡危险性评价

董建辉¹,李海军²,赵建军³,朱要强⁴

（1.成都大学建筑与土木工程学院，四川 成都 610106；2.中国建筑西南勘察设计研究院有限公司，四川 成都 610052；

3.成都理工大学 地质灾害防治与地质环境保护国家重点实验室，四川 成都 610059； 4.贵州省地质环境监测院，贵州 贵阳 550000）

摘　要：为了合理评价不稳定斜坡的危险性，在现场调研的基础上，采用UDEC离散元软件对贵州尖山营不稳定斜坡在不同工况下的稳定性系数及影响范围进行了计算.结果表明：该斜坡区域内采空区分布较广，在煤层采动作用下，山顶形成了多条地裂缝.得到该斜坡在天然工况下最大滑移距离为3.15 m，影响范围为4 512.3 m²；在暴雨工况下最大滑移距离为6.36 m，影响范围为9 345.8 m²；在暴雨+地震工况下最大滑移距离为243.4 m，影响范围为444 969.2 m²；主要威胁对象包括居民241人、建筑物131栋、公路、耕地及林地.在地质灾害危险性评价中，尖山营不稳定斜坡危险性较大.

关键词：不稳定斜坡； UDEC；危险性评价； 影响范围

中图分类号：TD802;P694      文献标志码：A 

Slope Hazard Assessment of Mining Area Based on UDEC

DONG Jianhui¹,LI Haijun²,ZHAO Jianjun³,ZHU Yaoqiang⁴

(1.School of Architecture and Civil Engineering,Chengdu University,Chengdu 610106,China;

2.China Architecture Southwest Exploration Design and Research Institute Co.,Ltd.,Chengdu 610052,China;

3.State Key Laboratory of Geological Disaster Prevention and Geological Environment Protection,

Chengdu University of Technology,Chengdu 610059,China;

4.Guizhou Geological Environment Monitoring Institute,Guiyang 550000,China)

Abstract：In order to evaluate the risk of unstable slope reasonably based on field investigation,the stability coefficient and instability range of unstable slope of Jianshanying in Guizhou under different working conditions were calculated by using UDEC discrete element software.The results show that the mined-out area is widely distributed in the slope area,and a few ground cracks are formed at the top of the mountain under the coal mining operation.The maximum slip distance of the slope under natural working condition is 3.15 m,and the influence range is 4512.3 m²;the maximum slip distance under working condition nith heavy rain is 6.36 m,and the influence range is 9345.8 mm²;the maximum slip distance under heavy rain + earthquake working condition is 243.4 m,and the influence range is 444 969.2 mm².The main gargets of the threat include 241 residents,131 buildings,roads,arable land and woodland.The evaluation of geological hazard shows that the unstable slope of Jianshanying is very dangerous.

Key words：unstable slope;UDEC;risk assessment;scope influence