巷道掘进过程中涌水灾害预注浆治理研究  

A Research on Pre-Grouting Treatment for Water Inrush Disasters During Tunnel Excavation

作　　者：潘善波 PAN Shanbo(Guangxi Xishan Mining Co.,Ltd.,Chongzuo,Guangxi 532315,China)

机构地区：[1]广西锡山矿业有限公司,广西崇左532315

出　　处：《中国锰业》2024年第3期64-68,共5页China Manganese Industry

摘　　要：随着某矿山开采深度的增加,矿井巷道面临涌水灾害的严峻挑战,对施工安全和生产效率构成了严重的影响。针对该问题,研究通过深入分析,确定涌水的主因系灰岩与隔水层接触界面的水溶蚀作用及地表降水的补给。根据工程地质和水文地质条件,设计了一套预注浆方案,包括注浆方式的选择、加固厚度的确定、注浆材料的选用、浆液扩散半径、终孔间距和注浆段长度的计算。在注浆孔布置、注浆液配制和注浆施工流程方面进行了详细的设计和规划。实际施工中,采用了双液注浆技术,并根据地层吸浆能力动态调整注浆参数。治理结果显示,超前预注浆技术显著减小了涌水量,从280 m^(3)/h减小至50 m^(3)/h,减幅达到82.1%,有效确保了巷道的安全与稳定,为类似矿山施工中的涌水问题提供了借鉴和指导。With the increase of mining depth in a certain mine,mine tunnels face severe challenges posed by water inrush disasters,which have a serious impact on construction safety and production efficiency.The study determined through in-depth analysis that the main causes of water inrush include the water dissolution effect at the contact interface between the limestone and the aquifer,as well as the replenishment of surface precipitation.Based on engineering geology and hydrogeological conditions,the study designed a pre-grouting scheme,including the selection of grouting method,determination of reinforced thickness,selection of grouting materials,calculation of grouting diffusion radius,final hole interval,and grouting section length.Detailed design and planning have been carried out in terms of grouting hole layout,grouting fluid configuration,and grouting construction process.In actual construction,dual-liquid grouting technology was adopted,and grouting parameters were dynamically adjusted based on the suction capacity of the formation.The governance results showed that pre-grouting technology significantly reduced the water inflow from 280 m^(3)/h to 50 m^(3)/h,a decrease of 82.1%,ensuring the safety and stability of the tunnel,and providing reference and guidance for water inflow issues in similar mine construction.

关 键 词：巷道涌水 预注浆技术 注浆孔布置 注浆材料 注浆液配制 

分 类 号：TD743[矿业工程—矿井通风与安全]