摘要
在岩层控制的关键层理论基础上,运用RFPA2000软件,模拟了综放采动覆岩的冒落过程,得到了采动覆岩的破断垮落规律和围岩支承压力的动态分布规律,进而得到了综放采空区的支承压力分布情况。采空区的破碎冒落覆岩可划分为3个区,即自然堆积区、结构支撑区和压实稳定区,这对老塘破碎岩体压实状态描述及渗流特性分析具有重要的参考价值。
Based on the key layer theory,the falling process of the overlying rocks in fully-mechanized top-coal caving stope is simulated using the RFPA2000 software. The dynamic distribution patterns of the caving of theoverlaying rocks and the abutment pressure in surrounding rocks are analyzed. The distribution of the abutment pressure in the goaf is obtained by numerical simulation for the first time. According to the calculated results,the cracked rocks in the goaf can be divided into three areas,namely,natural accumulation area,structure supporting area and steady compaction area. The findings are of important value for describing the compaction state and analyzing the seepage features of the cracked rock in the goaf.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第7期1122-1126,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重点项目(50134040)资助课题。
关键词
矿业工程
采场
覆岩移动
支承压力
数值模拟
minimg engineering,fully-mechanized top-coal caving mining,overlying rock movement,abutment pressure,numerical simulation
