防腐抗渗韧性井壁结构设计及其在新城金矿新主井施工中的应用  

Corrosion-resistant and anti-seeping shaft wall construction design and its application to the new main shaft construction of Xincheng Gold Mine

作　　者：程力 Cheng Li(Deep Mining Laboratory of Shandong Gold Group Co.,Ltd.;Shandong Key Laboratory of Deep-sea and Deep-earth Metallic Mineral Intelligent Mining)

机构地区：[1]山东黄金集团有限公司深井开采实验室 [2]山东省深海深地金属矿智能开采重点实验室

出　　处：《黄金》2022年第4期38-41,共4页Gold

基　　金：国家重点研发计划项目(2016YFC0600800)。

摘　　要：在深竖井设计施工过程中,高聚能、高温、高水压、破碎地层围岩等因素严重影响井壁稳定性,合理的井壁结构成为井筒安全施工的关键。针对新城金矿深竖井存在围岩破碎、高地应力、高承压水、高硫酸根离子和氯离子地下水的围岩条件,结合C40高性能防腐抗渗韧性新型混凝土及锚网梁支护方式,对1300 m以深井筒筒身的井壁结构进行优化调整,设计了2种韧性抗渗、抗腐蚀的新型井壁结构,并进行了现场应用。结果表明:防腐抗渗韧性井壁结构施工后,井筒深部施工现场未有新的岩爆情况发生,井壁抗冲击性较好,现场涌水量明显减少。研究成果为新城金矿新主井深部支护施工提供了技术支撑,也可为类似条件的深竖井开挖深部井筒围岩支护提供技术指导与借鉴。During the design and construction of deep shaft,factors such as high aggregation energy,high temperature,high water pressure,and broken strata wall rock seriously affect the stability of the shaft wall,and rational the shaft wall structure becomes the key to the safe construction of the shaft.In order to optimize the structure of the shaft body walls at the depth below 1300 m by using C40 high-performance corrosion-resistant anti-seeping ductile new concrete and bolt-mesh-beam support in the presence of wall rock fracture,high surface stress,highly pressurized water,high sulfate radical and chloridion groundwater in the deep shaft of Xincheng Gold Mine,two types of ductile and corrosion-resistant new shaft wall structures were designed and applied with good field performance.Results show that after employing the ductile corrosion-resistant and anti-seeping shaft wall structure,there were no new rockburst at the deep construction site of the shaft,the impact resistance of the shaft wall was better,and the amount of water surge at the site was significantly reduced.The research results provide technical support for the support construction deep in the new main shaft of Xincheng Gold Mine,and also provide technical guidance and reference for deep shaft wall rock support in deep shaft excavation under similar conditions.

关 键 词：井壁结构 C40混凝土 锚网梁 防腐 抗渗 韧性 堵水 

分 类 号：TD262[矿业工程—矿井建设]