摘要
煤层顶板涌(突)水问题一直是威胁华北型煤田开采主要水患之一,龙王沟煤矿就一直受到煤层顶板水害困扰。其煤层顶板的山西组水和下石盒子组水,局部富水,一旦发生涌突水,将造成极其严重的后果,因此顶板涌(突)水问题得到重视。采用“三图-双预测法”对龙王沟煤矿煤层顶板涌(突)水条件进行评价,在对其煤层顶板充水含水层的富水性和开采顶板冒落的安全性进行分区的基础上,运用多源地学信息复合叠加原理,将6^(#)煤顶板综合安全性划分为三个区,其中Ⅰ区危险性相对较大,Ⅱ区涌水危险性较小,Ⅲ区为相对安全区。最终预测出开采6^(#)煤层顶板正常涌水量为173.754m^(3)/h,为煤矿制定防治水措施提供了科学依据。经过近几年的生产实践,验证了预测结果的准确性,为煤矿安全生产提供技术支撑意义重大。
Coal roof water inrush(bursting)issue is always one of main water inundations threatening North China type coalfield exploitation.The Longwanggou coalmine is one of injured parties.Its coal roof Shanxi and Xiashihezi formations water,locally water-rich,once roof water inrush(bursting)happened will cause extremely serious consequences.Thus,enough importance has been attached to it.In this study the“three maps-double predictions”method has been used to assess roof water inrush(bursting)condition of the coalmine.On the basis of coal roof water filling aquifer water yield property and roof caving safety zoning,using multi-source geo-science information composite stacking principle has partitioned coal No.6 roof integrated safety into three regions,in which,Region Ⅰ has relatively larger hazard,Region Ⅱ less water inrush hazard,Region Ⅲ is relatively safe area.Finally predicted mining coal No.6 roof normal water inflow is 173.754 m^(3)/h,thus provided scientific basis for coalmine water control measures drafting.The productive practices in recent years have validated predicted results accuracy,and provided significant technological support for coalmine production safety.
作者
卢玲敏
Lu Lingmin(The Second Hydrogeological Exploration Team,CNACG,Xingtai,Hebei 054000)
出处
《中国煤炭地质》
2020年第S01期44-48,共5页
Coal Geology of China
关键词
“三图-双预测法”
顶板涌(突)水条件
龙王沟煤矿
“three maps-double predictions”method
roof water inrush(bursting)condition
Longwanggou coalmine
