辽宁工程技术大学学报（自然科学版）Issue(2)：181-184,4.
大采高采场上覆岩层运移规律数值模拟
Movement law of overlying rock in large mining height face by simulation
摘要
Abstract
For the mining height mining overburden structure and migration rule, for big mining height of high yield and high efficiency mining provides theory basis, through 3 DEC numerical simulation software, to 6.2 m in sihe coal mine large mining height the occurrence characteristics of rock engineering background, we establish mining height of 2.2 m, 3.2 m, 4.2 m, 5.2 m, 6.2 m of the numerical model to study the different mining height on the overlaying strata breaks down fall characteristics. The results show that mining height is low, with the increase of mining height, the hulking coefficient increased, falling height also increased, but when mining height increases to 5.2 m, with the increase of the hulking coefficient, take down height but almost the same. Mining height of 2.2 m, the largest amount of abscission layer 1 m, with the increase of mining height, overburden bed separation grouting quantity basic sharply increase, when mining height more than 4.2 m, overburden bed separation grouting increased rapidly, when mining height are increased to 6.2 m, the overburden bed separation grouting quantity achieved 3.05 m. With the increased amount of overburden bed separation grouting, the basic roof easily when instability caused by impact load to stents, increase the dynamic load coefficient, great influence mining height in support of longitudinal and transverse stability.关键词
大采高/上覆岩层/3DEC/碎胀系数/冒落高度/离层量/支架/动载系数Key words
height mining/ overburden/ 3DEC/ hulking coefficient/ falling height/ size of bed separations/ support/ dynamic load coefficient分类
天文与地球科学引用本文复制引用
孙占国..大采高采场上覆岩层运移规律数值模拟[J].辽宁工程技术大学学报（自然科学版）,2012,(2):181-184,4.基金项目
河北省自然科学基金资助项目(E2011208036) （E2011208036）
