地下水活动对采空区覆岩移动影响机理分析  

Impact mechanism of groundwater flow on overlying strata movement in the goaf

作　　者：王云广[1] 张子月[2] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]河南理工大学测绘与国土信息工程学院,河南焦作454000

出　　处：《南水北调与水利科技》2015年第4期742-746,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：河南理工大学创新型科研团队(T 2013-1)

摘　　要：目前在采煤覆岩移动研究方面较少考虑地下水活动的影响,但地下水流失也能引发显著的覆岩移动,且两者在某些区域可共同存在。通过分析采空区覆岩移动的基本形式及含水覆岩层内水通过裂隙时对覆岩的作用等,阐述了地下水活动对采空区覆岩移动的影响机理,认为一定条件下含水覆岩层内的水活动对采空区覆岩移动具有"帮助"作用,在其长时间作用下可引发更大范围、更大程度的覆岩移动变形或局部突发性塌陷。T he current research on t he overlying strata movement in the coal mine goaf rarely considers the influence of groundw-ater flow; however, groundwater loss can result in strata movement and both factors occur simult aneously in some area. In t his paper, the basic form of overlying strat a movement and t he effects of groundw ater flow in t he water-bearing stratum passing through the fracture on the strata w ere analyzed, and the impact mechanism of groundw ater flow on the overlying strata move-ment in the goaf was discussed. The f indings suggested that groundw ater flow can “ help” t he overlying st rata movement under certain conditions, and long-time groundw ater flow can cause the overlying strata movement with larger area and degree and lead to locally sudden collapse.

关 键 词：地下水 采空区 覆岩 移动变形 影响机理 分析 

分 类 号：P641[天文地球—地质矿产勘探]