摘要
研究了长壁采煤上覆岩层运动中层间脱开的条件、存在过程及其与岩层结构和采矿条件的关系．以理论分析、相似模拟和数值仿真为基础，提出了产生离层的覆岩结构类型，离层起始条件、扩展条件和离层量的预测方法．进一步提出了层间注浆的作用机理．
Bed separation and existing period in the overburden in longwall mining are studied.The relationship between the separation and structure of rock mass as well as mining conditions is given.Based on theoretical analysis,simulation using equivalent materials,numeric simulation,the tectonic type of overburden with evidence of bed separation,the initial conditions for bed separation,conditions for propagation and method for prediction of the amount of bed separation are proposed.The mechanism for injection of grouts into the space between layers is described.This research is of important significance to roof control over a large area and to protection of surface buildings.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1996年第6期576-581,共6页
Journal of China Coal Society
基金
国家自然科学基金
关键词
层岩移动
离层
层间注浆
覆岩
采煤
长壁开采
rock movement,bed separation,roof control,grout injection into space between layers
