深厚富水地层深基坑新型止水封底帷幕的设计与施工  

Designing and Construction of New Type of Water Stop Bottom Curtain for Deep Foundation Pit in Thick Stratum with Abundant Water

作　　者：刘伟 LIU Wei(Shen Kan Engineering&Technology Corporation,MCC,Shenyang 110169,China)

机构地区：[1]中冶沈勘工程技术有限公司,辽宁沈阳110169

出　　处：《矿业安全与环保》2018年第5期83-86,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51178457);中冶沈勘科技项目(KJYF2014-001)

摘　　要：为减少地下水资源的过度开采、降低抽取地下水对周边环境的不利影响,提出在深厚富水地层的深基坑工程设置带有抗浮锚杆的全封闭止水帷幕技术方案;应用静力平衡和渗流稳定条件进行了封底止水帷幕的力学特性分析,提出该型深基坑封底结构实用设计方法,并结合其工程特性提出施工方法和施工控制参数。工程应用实践表明,提出的设计和施工方法可行。In order to reduce excessive exploitation of groundwater resources and reduce the adverse effects of groundwater extraction on surrounding environment,a technical scheme was put forward that set a whole closed curtain with anti-floating anchor in deep foundation pit in thick stratum with abundant water.The static equilibrium and seepage stability conditions were used to analyze the mechanical characteristics of the water stop bottom curtain.The practical design method of the bottom sealing structure of the deep foundation pit was presented.Combined with its engineering characteristics,the construction method and construction control parameters were proposed.The engineering practice shows that the proposed design and construction method are feasible.

关 键 词：深厚富水地层 深基坑 抗浮锚杆 封底帷幕 渗流稳定性 旋喷桩 

分 类 号：TU753[建筑科学—建筑技术科学] TD745[矿业工程—矿井通风与安全]