宁武煤田水文地质条件探查及防治水技术  

Exploration of Hydrogeological Conditions and Water Control Technology in Ningwu Coalfield

作　　者：张超 ZHANG Chao(Shanxi Ningwu Yushupo Coal Industry Co.,Ltd.,Ningwu 036700,China)

机构地区：[1]山西宁武榆树坡煤业有限公司,山西宁武036700

出　　处：《煤》2025年第1期100-103,共4页Coal

摘　　要：宁武煤田5号煤底板隔水层厚度较小,局部受奥灰水威胁较大,构造复杂。为探明其水文地质条件并评价其带压开采可行性及安全性,采用工程与测试相结合的方式,从隔水层厚度、岩性、力学性质、地应力等角度分析隔水层渗透性、阻水性及突水系数,提出了防治水措施并进行了现场应用。结果表明:5号煤底板隔水层属于砂泥岩复合型,抗水压能力和隔水能力中等,突水临界指数、透水率、渗透系数、突水系数均在安全范围内,带压开采安全性较高。在5106工作面进行了针对性物探及注浆加固防治水治理,实现了工作面安全高效开采,为类似条件下煤层开采提供了指导与借鉴。The thickness of the waterproof layer on the 5th coal seam floor in Ningwu Coalfield is relatively small,and it is locally threatened by Ordovician limestone water.The structure is complex.In order to explore its hydrogeological conditions and evaluate the feasibility and safety of pressurized mining,a combination of engineering and testing was used to analyze the permeability,water resistance,and water inrush coefficient of the waterproof layer from the perspectives of thickness,lithology,mechanical properties,and geostress.Water prevention and control measures were proposed and applied on site.The results show that the waterproof layer of the 5th coal seam floor belongs to the sand mudstone composite type,with moderate water resistance and waterproof ability.The critical index,permeability,and coefficient of water inrush are all within the safe range,and the safety of pressurized mining is relatively high.Targeted geophysical exploration and grouting reinforcement were carried out in the 5106 working face to prevent and control water,achieving safe and efficient mining of the working face,providing guidance and reference for coal seam mining under similar conditions.

关 键 词：带压开采 隔水层 防治水措施 注浆加固 

分 类 号：P641.461[天文地球—地质矿产勘探] TD745.2[天文地球—地质学]