煤矿安全2024，Vol.55Issue(2)：176-183,8.DOI:10.13347/j.cnki.mkaq.20222180
覆岩导水裂隙带发育高度动态演化规律研究
Study on dynamic evolution law of development height of overburden water-flowing fractured zone
摘要
Abstract
In order to study the dynamic evolution law of the development height of overburden water conducting fractured zone,taking 2-2 coal seam in Xiaobaodang Mining Area as the research object,the dynamic development height of water conducting frac-tured zone was studied by theoretical analysis,similar simulation experiment and case verification;a prediction method of dynamic development height of water-flowing fractured zone based on curvature deformation of overburden strata is proposed by using the theoretical formula of predicting the movement and deformation of upper strata with probability integral method.The research shows that the subsidence coefficient of the upper strata of the water-conducting fractured zone is a piecewise function related to the deflec-tion and the height of the lower free space.The curvature deformation of the upper strata is the key factor to determine the develop-ment height of the water-conducting fractured zone.The development height of water-flowing fractured zone is related to the ad-vance length of working face;the theoretical prediction of the development height of the water conducting fractured zone in 2-2 coal seam of Xiaobaodang Mining Area is 160.8 m,the development height of the similar simulation experiment is 155 m,and the devel-opment height of the field measurement is 152.01-175.57 m.关键词
导水裂隙带/动态演化/下沉系数/曲率变形/概率积分法Key words
water-conducting fractured zone/dynamic evolution/subsidence factor/curvature deformation/probability integral method分类
矿业与冶金引用本文复制引用
赵兵朝,冯杰,赵阳,侯恩科,马云祥,冯欣怡..覆岩导水裂隙带发育高度动态演化规律研究[J].煤矿安全,2024,55(2):176-183,8.基金项目
国家自然科学基金资助项目(51874230,52074208) （51874230,52074208）
