山西省两渡煤业二采区10^(#)煤层底板突水危险性评价  

Evaluation on the Risk of Water Inrush from the Floor of No.10 Coal Seam in Liangdu Coal Industry in Shanxi Province

作　　者：武新艳 郭志娟 马红卫[1] Wu Xinyan;Guo Zhijuan;Ma Hongwei(The Fourth Hydrogeological Exploration Team,CNACG,Handan,Hebei 056001)

机构地区：[1]中国煤炭地质总局第四水文地质队,河北邯郸056001

出　　处：《中国煤炭地质》2022年第S01期63-66,99,共5页Coal Geology of China

摘　　要：两渡煤业大部区域10^(#)煤层带压开采问题突出。采用五图双系数法,对两渡煤业二采区10^(#)煤层底板突水危险性进行了评价预测。在收集井田水文地质条件的基础上,通过分析底板破坏深度、底板保护层厚度、底板隔水层水头压力、有效保护层厚度等突水影响因素,以“突水系数”为主要评价指标,结合“带压系数”,配合“三级判别”,划分了4个带压开采区:非直通式相对安全区(二采区中北部)、非直通式相对危险区(二采区中部)、非直通式危险区(二采区东南部)、直通式危险区(构造发育地段),为带压安全开采提供技术支撑。The problem of mining under pressure in the No.10 coal seam in most areas of Liangdu Coal Industry is prominent.In this paper,the five figures and double coefficients method is used to evaluate and predict the water inrush risk of the No.10 coal seam floor in the second mining area of Liangdu Coal Industry.On the basis of collecting the hydrogeological conditions of the well field,by analyzing the floor damage depth,floor protection layer thickness,water pressure of floor aquiclude,effective protection layer thickness and other factors affecting water inrush,the“water inrush coefficient”is used as the main evaluation index and combined The“coefficient of pressure”,in conjunction with the“three-level discrimination”,divides four pressure mining areas:non-through-type relative safety zone,non-through-type relative dangerous area,non-through-type dangerous area,and through-type dangerous area,which are under pressure provide technical support for safe mining.

关 键 词：五图双系数法 底板突水 带压开采 评价分区 

分 类 号：TD745[矿业工程—矿井通风与安全]