工程地质学报2016，Vol.24Issue(5)：768-774,7.DOI:10.13544/j.cnki.jeg.2016.05.006
山区平缓采动斜坡裂缝成因机制研究
GENETIC MECHANISM OF MINING CRACKS OF GENTLY INCLINED SLOPE IN MOUNTAINS
摘要
Abstract
The mining slope in mountains area of southwestern China has some common characteristics.They include high and steep terrain,“hard stratum over soft stratum”slope structures,gently inclined strata,well-developed joints with high dip angle,and strong mining activities beneath the slope.The slope has not obvious movement basin.The slope cracks caused by underground mining are large and corresponding to the mined-out area. It has a complicated formation mechanism.This article takes the case of Jieniangping deformable rock mass in Guizhou province.It analyses the genetic mechanism of slope cracks using numerical simulation.Result shows that slope occurs cracks along joints and all the way to surface.Due to the impact of high and steep terrain and underground mining,the cracks continues to expand with repeated mining.The slope has a toppling failure trend toward surface.It proposes that slope deformation process includes three stages:mining disturbance,the tension at the crest,deformation increase through numerical simulation.Due to repeated mining in multi-coal strata,slope deformation has experienced four stages, namely initial deformation stage, constant deformation stage and accelerated deformation stage and stable deformation.关键词
平缓斜坡/重复采动/采动裂缝/成因机制Key words
Gently inclined slope/Repeated mining/Mining cracks/Genetic mechanism分类
天文与地球科学引用本文复制引用
史文兵,黄润秋,赵建军,巨能攀,向喜琼..山区平缓采动斜坡裂缝成因机制研究[J].工程地质学报,2016,24(5):768-774,7.基金项目
国家自然科学基金（No．41372306），贵州省地质灾害监测预警与知识平台建设项目（Z117238）资助． （）
