CAJ | 학술논문

2006年1月27日，贵州省威宁县猴场镇腰岩脚发生崩塌。腰岩脚高陡坡为软弱基座型，上覆硬岩为碳酸盐岩，下伏软岩中有近水平可采煤层。基于灾害特征及过程分析，建立了崩塌发生机制概念模型，即高陡斜坡中因强烈岩溶作用发育有深切溶蚀裂缝和水平溶洞，形成高陡岩墙，坡体深部煤层向坡面过度回采，导致岩墙下部应力集中过大而发展为破坏。基于MIDAS ／GTS 分析软件量化分析了崩塌发生机理及过程，并进一步分析了不同采空率下回采工作面距离陡崖面的临界安全距离，可为类似条件下煤矿开采提供参考依据。
2006년1월27일，귀주성위저현후장진요암각발생붕탑。요암각고두파위연약기좌형，상복경암위탄산염암，하복연암중유근수평가채매층。기우재해특정급과정분석，건립료붕탑발생궤제개념모형，즉고두사파중인강렬암용작용발육유심절용식렬봉화수평용동，형성고두암장，파체심부매층향파면과도회채，도치암장하부응력집중과대이발전위파배。기우MIDAS ／GTS 분석연건양화분석료붕탑발생궤리급과정，병진일보분석료불동채공솔하회채공작면거리두애면적림계안전거리，가위유사조건하매광개채제공삼고의거。
On January 27,2006,a rockfall happened at Yaoyanjiao of Houchang town in Weining county, Guizhou province.Yaoyanjiao high-steep slope has overlying strata covered by carbonate and underlain with soft rock.It also has nearly horizontal coal seams.Based on the analysis of disaster characteristic and process,the conceptual model of generation mechanism is established.There are several deep dissection dissolution cracks and horizontal caves caused by intense karst in high-steep slope.High-steep dyke is therefore formed in high-steep slope.The excessive mining of coal seam from the deep of slope body to slope surface has resulted in high stress concentration in the lower part of dyke and developed into failure.Quantitative analysis of generation mechanism and process is conducted by the employment of MIDAS /GTS software.Further analysis of critical safe distance of mining face from cliff face is done at different recovery ratios.The results can provide reference for analogous conditions of coal mining.