富水大厚度流沙层立井井筒施工技术研究  

Research on Shaft Construction Technology in Water Rich and Thick Quicksand Layer

作　　者：陶银柱 TAO Yinzhu(Tongguan Mine Construction Co.,Ltd.of Tongling Nonferrous Metals Group,Tongling,Anhui,244100,China)

机构地区：[1]铜陵有色金属集团铜冠矿山建设股份有限公司,安徽铜陵244000

出　　处：《工程建设（维泽科技）》2022年第9期158-161,共4页Engineering Construction

摘　　要：2020年11月6日哈萨克斯坦VCM立井井筒在井颈段开挖时,突遇涌水量约32m3/h,厚度约13m的流沙层。针对此类富水大厚度流沙层,常用冻结法或高压旋喷法进行治理,但VCM立井地处哈萨克斯坦,地表最低温度约零下40℃,且0--12m井颈和永久风道已经形成。综上选择置换注浆和短掘短砌施工技术,历经6个月,成功穿过该流沙层;实现了复杂水文地质条件下的快速掘进,提高了施工进度,为项目创造了效益。文中根据实际施工情况,对此类富水大厚度流沙层安全快速施工进行了分析总结,为以后类似工程提供参考和借鉴作用。On November 6,2020,when the VCM shaft in Kazakhstan was excavated in the neck section,it suddenly encountered a quicksand layer with a water inflow of about 32m3/h and a thickness of about 13m.For this kind of water rich and thick quicksand layer,freezing method or high-pressure rotary jet method are commonly used for treatment,but VCM shaft is located in Kazakhstan,the minimum surface temperature is about minus 40℃,and 0-12m shaft neck and permanent air duct have been formed.To sum up,the replacement grouting and short excavation and short masonry construction technology were selected,and it took 6 months to successfully cross the quicksand layer;It realizes rapid excavation under complex hydrogeological conditions,improves the construction progress,and creates benefits for the project.According to the actual construction situation,this paper analyzes and summarizes the safe and rapid construction of this kind of water rich and thick quicksand layer,so as to provide reference for similar projects in the future.

关 键 词：富水 大厚度 流沙层 置换注浆技术 浆液 短掘短砌 

分 类 号：TD7[矿业工程—矿井通风与安全]