富水软弱地层地铁隧道浅埋暗挖施工技术

Shallow Tunnel Construction Technology in Watery & Weak Straum

1. China Highway Planning and Design Institute(HPDI) Consultants, INC, Beij ing 100010 China;
2. Reaserch Center of Tunneling and Underground Engineering, Northern Jiaotong University, Beijing 100044 China;
3. Consultant Ld. Co of Shaoxing Construction Project, Zhejiang Shaoxing 312030 China

摘要: 浅埋暗挖法在深圳地铁一期工程2 3标区间隧道施工中成功运用,其中地表降水、旋喷止水帷幕、天桥基础托换和地质超前预报等技术都在含砂、含水、软土地层中成功实施,隧道顺利通过富水软弱含砂地层及两座人行天桥,施工进度、安全性和施工质量都得到保证,并有效地控制了地表沉降,取得了很好的经济效益。对各项技术措施、施工工艺及技术难点进行了分析,指出该技术在富水软弱地层中广阔的应用价值和前景。
- 浅埋暗挖法 /
- 地表降水 /
- 旋喷止水帷幕 /
- 地质超前预报 /
- 基础托换
Abstract: STCM is used successfully in 23 Lot of Shenzhen Metro Phase Ⅰ Project and many technics have implemented in water, sandy & weak stratum, such as ground precipi tation, jet grouting waterproof purdah, geologic pre-predict, base substitute and so on. Tunnel passed two overbridge and sandy stratum safely with quick excav ating speed, good quality, small ground settlement and large economy benefit. Each measure, technics and difficulty of this project are introduced,and it is shown that STCM has a wide apply fonground in water sandy and weak stratum.
- shallow tunnel construction method(STCM) /
- ground precipitation /
- jet grouting wat erproof purdah /
- geologic pre-predict /
- base substitute