高水位粉砂土层综合管廊基坑降水技术*
  • 作者: 陈雁云,王云锋,周春亮
论文摘要

高水位粉砂土层综合管廊基坑降水技术*

陈雁云,王云锋,周春亮

(中交路桥华东工程有限公司,上海 201210)

[摘要]泰州高港地区毗邻长江,水位较高,为粉砂及粉砂夹粉土地质,透水性强,降水施工对管廊基坑施工起到至关重要的作用。在止水帷幕条件下,分析降水出水量、土层涌水量与速度,控制降水效果,为基坑干作业提供良好场地。着重介绍降水选型、降水与土质关系、降水设计思路、降水计算分析、降水效果与降水措施优化,形成一套合理可靠的施工技术方案。

[关键词]综合管廊;基坑;设计;降水平衡

[中图分类号]TU753.1    [文献标识码]A    [文章编号]1002-8498(2021)08-00092-04

Dewatering Technology of Utility Tunnel Foundation Excavation Under High Water Level Silt Soil

CHEN Yanyun, WANG Yunfeng, ZHOU Chunliang

(CCCC Road & Bridge East China Engineering Co.,Ltd., Shanghai 201210, China)

Abstract: Gaogang District of Taizhou City is adjacent to the Yangtze River, where the water level is high, the soil layer is silt sand and silt sand mixed with silt, and the water permeability is strong. Dewatering construction plays a crucial role in the construction of pipe gallery foundation excavation. Under the condition of waterproof curtain, the water yield of dewatering, water inrush and velocity of soil layer are analyzed to control the effect of dewatering, so as to provide a good site for foundation excavation dry operation. The selection of dewatering, the relationship between dewatering and soil quality, the design idea of dewatering, the calculation and analysis of dewatering, the effect of dewatering and the optimization of dewatering measures are emphatically introduced, so as to form a set of reasonable and reliable construction technology scheme.

Keywords:utility tunnel; foundation excavation; design; dewatering equilibrium

*中交路建科技研发项目: 多舱变截面地下综合管廊现浇施工技术研究(ZJLJ-2020-17

[作者简介]陈雁云,工程师,Email: 806846713@qq.com

 

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