摘要
王家岭煤矿在12km长的平硐开拓过程中揭露整个奥陶系灰岩,但出水量及出水点均不如震旦系花岗岩及寒武系灰岩多,与华北地区的普遍情况相反。同时,区内的水文地质补勘资料也显示其q=0.000 4～0.031L/(m.s),表明了奥陶系灰岩含水层的富水性弱,分析原因为:①区域内补给源变弱,矿区不在强径流带上,边界多为隔水边界,地下水系统处于半封闭状态;②构造及地形造成水易流失而不易被保留;③奥灰岩溶隙发育形态及岩性组合减缓阻碍地下水径流。
During the opening-out of a 12km long adit in the Wangjialing coalmine,whole Ordovician limestone section has disclosed.But contrary with common situation in North China area,its water yield and exit points are all inferior to that of Sinian granite and Cambrian limestone.Meanwhile,hydrogeological supplementary exploration data are also revealed its q=0.0004～0.031L/（m·s）,showing its weak water yield property.Analyzed causations have： ① recharging source in the area is weak,mine area not on strong runoff belt,groundwater system semi-enclosed;② structures and landform are easy to cause water running off,not retaining;③ Ordovician limestone karstic fracture development configuration and lithologic combination slow down or block the groundwater runoff.
出处
《中国煤炭地质》
2010年第12期38-41,共4页
Coal Geology of China
关键词
王家岭煤矿
奥陶系灰岩
弱富水性
Wangjialing coalmine
Ordovician limestone
weak water yield property
