开采对底板岩体渗透性的影响  

INFLUENCE OF MINING ON FLOOR INFILTRATION COEFFICIENTS

作　　者：李兴高[1] 高延法[2] 

机构地区：[1]北方交通大学土建学院,北京100044 [2]山东科技大学矿压研究所,泰安271019

出　　处：《岩石力学与工程学报》2003年第7期1078-1082,共5页Chinese Journal of Rock Mechanics and Engineering

摘　　要：受奥灰水威胁,煤层“带压开采”的关键是必须搞清底板岩体的破坏机理,确定底板岩体的破坏深度。而确定底板岩体的破坏深度通常是依据其渗透性的改变进行的。底板岩体渗透性的改变和底板岩体的应力场密切相关。利用现场实测数据、岩石力学参数和位移反分析的方法,确定了赵各庄矿1237工作面的底板应力场,进而确定了底板岩体的渗透系数,最后,具体分析了底板应力场和渗透系数的关系。The key of mining the coal seam threatened by confined water in Ordovician limestone is the understanding of the failure mechanism of floor rockmass and determination of affecting depth by mining. The affecting depth is usually acquired according to the change of permeability in floor rockmass. The permeability of the floor rockmass is closely related to the stress field of floor rockmass. Based on in-situ measured data, mechanical parameters of rock and method of displacement back analysis, the floor stress field of coal face No. 1237 in Zhaogezhuang Mine is firstly given, then the permeability coefficients of floor rockmass is computed, and lastly the relationship between stress field and permeability coefficients is determined.

关 键 词：采矿工程 底板 渗透性 位移反分析 岩石力学 位移 

分 类 号：TD313[矿业工程—矿井建设]