采矿与安全工程学报Issue(1)：54-58,5.DOI:10.13545/j.cnki.jmse.2015.01.009
重复采动影响下采场底板隔水层裂隙演化规律试验研究
Experimental research on fracture evolution law of water-resisting in coal seam floor during re-mining
摘要
Abstract
North China mining area is affected by limestone water of Taiyuan formation and Ordovi-cian at the bottom of the Permian coal series permo carboniferous coal. In order to analyze the load-transfer characteristics and failure mechanism of the water-resisting floor in response to the dual function of mine-induced stress and water pressure, confined water automatic loading system has been designed, and the failure process of the floor aquifuge fracture initiation, expansion and transfixion has been showed through physical simulation during re-mining. Thus, fracture distribution characteristics and formation mechanism have been presented at the different layers of floor, and through the dis-placement measurement system, the deformation rules and district characteristics have been drawn.关键词
重复采动/底板隔水层/物理模拟/裂隙演化/力学机制Key words
re-mining/water-resisting floor/physical simulation/fracture evolution/mechanical mechanism分类
矿业与冶金引用本文复制引用
付宝杰,涂敏..重复采动影响下采场底板隔水层裂隙演化规律试验研究[J].采矿与安全工程学报,2015,(1):54-58,5.基金项目
国家自然科学基金项目(51074004，51174002)；安徽省科技攻关计划项目(11010401015) （51074004，51174002）
