长江科学院院报 ›› 2017, Vol. 34 ›› Issue (2): 94-98.DOI: 10.11988/ckyyb.20161264

• 防渗、反滤及排水 • 上一篇    下一篇

岸坡水平排水孔现场试验及地下水监测成果分析

盛小涛1,顾缬琴2,定培中1,李少龙1,朱国胜1,严敏1   

  1. 1.长江科学院 水利部岩土力学与工程重点实验室,武汉 430010;
    2.长江航道规划设计研究院 工程检测中心,武汉 430011
  • 收稿日期:2016-05-28 修回日期:2016-08-11 出版日期:2017-02-01 发布日期:2017-02-08
  • 作者简介:盛小涛(1987-),男,湖北黄冈人,工程师,硕士,主要从事渗流及地下水环境研究,(电话)027-82820385(电子信箱)shengxiaotao@163.com。

Horizontal Drainage Holes in Bank Slope: In-situ Test and Groundwater Monitoring

SHENG Xiao-tao1 , GU Xie-qin2, DING Pei-zhong1, LI Shao-long1, ZHU Guo-sheng1, YAN Min1   

  1. 1.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010, China;
    2.Engineering Quality Inspection Center,Changjiang Waterway Planning Design and Research Institute, Wuhan 430011, China
  • Received:2016-05-28 Revised:2016-08-11 Online:2017-02-01 Published:2017-02-08

摘要: 为研究岸坡水平排水孔技术的排水效果,在长江中游航道江陵高滩守护工程中布置水平排水孔现场试验段。在布置盲沟等传统排水措施基础上,增设不同深度的采用可拆换式过滤体的水平排水孔,与仅采用传统排水措施的工程比较排水效果,检验水平排水技术的有效性与可操作性。监测成果表明,岸坡内水位与长江水位变化关系密切:在江水位上涨阶段,江水流向岸坡,与岸坡地下水形成补给关系;然而在江水位下降阶段,岸坡地下水流向长江,形成排泄关系。增加水平排水孔后,岸坡排水效果要优于仅采用常规盲沟试验段的排水效果,孔深为15 m方案的排水效果要优于孔深为8 m的排水效果。研究表明岸坡水平排水孔起到了较好的排水减压作用。

关键词: 水平排水孔, 岸坡, 地下水, 可拆换式过滤体, 现场试验

Abstract: In the aim of investigating the drainage effect of horizontal drainage holes in bank slope, in-situ tests were carried out on a bank slope of Yangtze River through arranging horizontal drainage holes of different depths with replaceable filter. The drainage effects were compared with that of blind ditch to validate the effectiveness and operability of drainage holes. Results of water level monitoring suggest that the water level in bank slope is closely related with that of the Yangtze River when river water level rises, groundwater of bank slope is recharged; whereas when river water level declines, groundwater of bank slope discharges to the river. We conclude that horizontal drainage holes have good effect in drainage and pressure reduction. The drainage effect of bank slope in the presence of drainage holes is better than that of conventional blind ditch; and the effect of drainage holes of 15m depth is superior to that of 8m depth.

Key words: horizontal drainage hole, bank slope, groundwater, replaceable filter, in-situ test

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