沉降式泵站基坑地下水渗涌防治与排水系统优化研究

Research on Prevention and Control of Groundwater Seepage and Drainage System Optimization in Foundation Pits of Sedimentation Pump Stations

摘要

沉降式泵站应用较多，结构紧凑、运行稳定、水泵吸水条件较好。此类泵站大多处在低洼或者近河沟的地方，机房底板长时间处于地下水位之下，基坑周围水压力一直存在。当地层裂隙发育、砂砾层透水性强、防水节点老化时，地下水就会向机房内部集中渗涌。渗涌水会破坏运行环境，也会使结构耐久性下降，产生设备腐蚀、基础空鼓、局部沉陷等危险。针对此问题，单纯依靠集水坑抽排不能达到长期稳定的治理效果，应该把渗流控制、防渗修复、排水组织、运行监测纳入一个系统，提高泵站的安全运行水平。

Abstract

Submerged pump stations are widely used due to their compact structure, stable operation, and good water suction conditions for pumps. Most of these pump stations are located in low-lying areas or near rivers and ditches, where the bottom plate of the pump room is constantly below the groundwater level, and water pressure persists around the foundation pit. When the strata fractures are developed, the permeability of the gravel layer is strong, and the waterproof joints are aged, groundwater will seep and gush into the interior of the pump room. The seepage water will damage the operating environment, reduce the durability of the structure, and pose risks such as equipment corrosion, foundation hollowing, and local subsidence. To address this issue, relying solely on sump pumping and drainage cannot achieve long-term stable control effects. Instead, seepage control, anti-seepage repair, drainage organization, and operation monitoring should be integrated into a system to improve the safe operation level of the pump station.

关键词

沉降式泵站 / 基坑渗涌 / 地下水控制 / 排水系统 / 防渗治理

Key words

subsiding pump station / foundation pit seepage and inrush / groundwater control / drainage system / anti-seepage treatment

参考文献

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