城市地质
城市地質
성시지질
URBAN GEOLOGY
2015年
2期
61-66,78
,共7页
张志林%马涛%王秀丽%刘思源
張誌林%馬濤%王秀麗%劉思源
장지림%마도%왕수려%류사원
悬挂式帷幕%封底阻水%地下连续墙%地下水控制
懸掛式帷幕%封底阻水%地下連續牆%地下水控製
현괘식유막%봉저조수%지하련속장%지하수공제
deaden water purdah above aquifer baseboard%back cover deaden water%underground diaphragm wall%groundwater control
以北京地铁8号线永定门外站为例，提出悬挂式帷幕阻水条件下基坑排水量计算方法以及悬挂式帷幕阻水中存在的问题。介绍了3种结合悬挂式帷幕采取的封底阻水措施，即水下灌注混凝土封底，深孔注浆封底以及超高压旋喷桩封底，并分别探讨了其优缺点。提出了悬挂式帷幕阻水结合基坑底部封底阻水的最佳建议方案，以达到有效节约地下水资源、降低工程施工难度和工程造价之目的。
以北京地鐵8號線永定門外站為例，提齣懸掛式帷幕阻水條件下基坑排水量計算方法以及懸掛式帷幕阻水中存在的問題。介紹瞭3種結閤懸掛式帷幕採取的封底阻水措施，即水下灌註混凝土封底，深孔註漿封底以及超高壓鏇噴樁封底，併分彆探討瞭其優缺點。提齣瞭懸掛式帷幕阻水結閤基坑底部封底阻水的最佳建議方案，以達到有效節約地下水資源、降低工程施工難度和工程造價之目的。
이북경지철8호선영정문외참위례，제출현괘식유막조수조건하기갱배수량계산방법이급현괘식유막조수중존재적문제。개소료3충결합현괘식유막채취적봉저조수조시，즉수하관주혼응토봉저，심공주장봉저이급초고압선분장봉저，병분별탐토료기우결점。제출료현괘식유막조수결합기갱저부봉저조수적최가건의방안，이체도유효절약지하수자원、강저공정시공난도화공정조개지목적。
Taking the Beijing Metro Line 8 Yongding outside as an example, the calculation method of the foundation pit drainage quantity under the suspension type water stop curtain and the problems in the suspended water curtain stop water are put forward. Discuss the advantages and disadvantages of three kinds of pit bottom measures, namely, underwater concrete grouting and sealing, deep hole grouting and deep ultra high pressure rotary spraying how to improve the permeability of bottom layer of foundation pit in order to achieve the purpose of ‘back cover”. Putting forward the best suggestion of the suspension type curtain stop water combined with foundation pit bottom treatment, in order to achieve the purpose of saving groundwater resources, reducing the dififculty of construction and engineering construction cost.
