掘进巷道过断层破碎综合防治水技术研究  

Research on Comprehensive Water Control Technology for Fault Fracture in Tunnel Excavation

作　　者：崔志鹏 Cui Zhipeng(Shanxi Fenxi Zhengling Coal Industry Co.,Ltd.,Xiaoyi Shanxi 032303,China)

机构地区：[1]山西汾西正令煤业有限公司,山西孝义032303

出　　处：《山西化工》2024年第12期155-156,170,共3页Shanxi Chemical Industry

摘　　要：二采区回风大巷掘进揭露的DF21断层具有一定的富水性且与回采的7#煤层底板含水层间存在有水力联系,巷道过DF21断层期间面临有涌水量大甚至突水问题。为确保二采区回风大巷安全掘进,提出以底板超前注浆+巷道帷幕注浆为核心的防治水技术,并在过断层期间强化围岩支护,减少围岩变形量。通过注浆可隔断断层与底板含水层、巷道与断层间水力联系通道,从而为二采区回风大巷安全掘进创造良好条件。现场应用后,二采区回风大巷过DF21断层期间围岩淋水量控制在0.07 m^(3)/h以内,淋水量整体较小,不会影响巷道正常掘进。The DF21 fault exposed by the excavation of the return air roadway in the second mining area has a certain degree of water richness and there is a hydraulic connection between it and the water bearing layer of the 7#coal seam floor.During the passage of the roadway through the DF21 fault,there is a problem of large or even sudden water inflow.To ensure the safe excavation of the return air roadway in the second mining area,a water prevention and control technology with advanced grouting of the bottom plate and curtain grouting of the roadway as the core is proposed.During the fault crossing period,the surrounding rock support is strengthened to reduce the deformation of the surrounding rock.By injecting grout,the hydraulic connection channels between faults and bottom aquifers,as well as between tunnels and faults,can be separated,thus creating favorable conditions for safe excavation of the return air roadway in the second mining area.After on-site application,the amount of water seepage from the surrounding rock during the passage of the DF21 fault in the return air roadway of the second mining area was controlled within 0.07 m^(3)/h.The overall amount of water seepage was relatively small and would not affect the normal excavation of the roadway.

关 键 词：巷道掘进 断层 导水裂隙 注浆封堵 

分 类 号：TD74[矿业工程—矿井通风与安全]