采矿与安全工程学报2011，Vol.28Issue(2)：252-257,6.
深部开采复合顶板离层稳定性判别
Discrimination of Stability Between Layers of Compound Roof in Deep Mining
摘要
Abstract
In this paper, we study the mechanical mechanism, analyze the stability discrimination standards, and discuss the distribution of shear stress, normal stress, and tensional stress of structural plane of the compound roof under different conditions.The result shows that the main cause of bed separation of the structural plane is the normal tensional stress in the middle part.So the action sphere of the normal tensional stress can be considered as bed separation range and as the discrimination standard of the bed separation.The distribution of interlayer separation of bed separation is related to separation size of the structural surface and makes the bed separation tend to be uniformed.关键词
结构面法向拉应力/结构面分离范围/结构面分离稳定性/离层分布/离层临界值Key words
normal tensile stress/ separation range of construction surface stability of construction surface separation/ distribution of interlayer separation/ critical value of interlayerseparation分类
矿业与冶金引用本文复制引用
吴德义,闻广坤,王爱兰..深部开采复合顶板离层稳定性判别[J].采矿与安全工程学报,2011,28(2):252-257,6.基金项目
国家自然科学基金项目(50974001) （50974001）
安徽省科技攻关计划重大科技专项项目(08010302061) （08010302061）
