Analysis of seepage causes for newly constructed bottom outlet and treatment

TANG Bangjun; HU Yan

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Analysis of seepage causes for newly constructed bottom outlet and treatment

更新时间：2026-07-02

- Analysis of seepage causes for newly constructed bottom outlet and treatment
- Vol. 0, Issue 1, (2026)
- 作者机构：
  
  1. 黄山市水利水电建设管理站,安徽,黄山,245000
  2. 黄山区水利局,安徽,黄山,245700
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV54
- Online First：11 March 2026，
  
  Published：11 March 2026
- 稿件说明：
移动端阅览
唐邦俊, 胡燕. 新建放水底涵渗水原因分析与处置[J]. 大坝与安全, 2026, 0(1): 69-.

TANG Bangjun, HU Yan. Analysis of seepage causes for newly constructed bottom outlet and treatment[J]. 2026, 0(1).
唐邦俊, 胡燕. 新建放水底涵渗水原因分析与处置[J]. 大坝与安全, 2026, 0(1): 69-. DOI：

TANG Bangjun, HU Yan. Analysis of seepage causes for newly constructed bottom outlet and treatment[J]. 2026, 0(1). DOI：

摘要

某水库采用非开挖定向钻拉管新建放水底涵，但在恢复下闸蓄水后的试运行阶段便发生了渗水问题。现场开挖分析认为，渗水原因主要是施工过程管控不规范和PE管抗外压强度不足，在超PE管强度的外压下，PE管破损并发生空瘪后出现渗水问题。由此对非开挖定向钻拉管新建放水底涵在水库除险加固中的适用性进行思考分析，结合该项技术在其他水库的应用，认为采用非开挖定向钻法在水库除险加固中新建底涵是可行的，但仍需不断完善设计，规范施工。

Abstract

A reservoir employed trenchless horizontal directional drilling pipe installation method to construct a new bottom outlet. However

seepage issues emerged during the trial operation phase after the water storage resumed. Field excavation analysis indicated that the primary causes of seepage were non- standardized construction process control and insufficient pressure resistance of the PE pipe. PE pipe ruptured and collapsed when the external pressure exceeding the PE pipe′s strength

resulting in seepage. Based on this case

applicability of trenchless horizontal directional drilling pipe installation method constructing new bottom outlet is discussed. Considering its application to other reservoirs

it is concluded that trenchless horizontal directional drilling is feasible for constructing new bottom outlet in reservoir reinforcement projects

while continuous improvements in design and standardized construction practices are essential.

关键词

Keywords

references

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