Water nail drainage system for railway roadbed slope and construction method of system

Abstract

The invention discloses a water nail drainage system for a railway roadbed slope and a construction method of the system. The water nail drainage system comprises water nails formed by covering a PVC (polyvinyl chloride) pipe or a PE (polyethylene) pipe with a capillary permeable drainage tape layer, cocks and tees that connect the water nails and a water collection pipe, water nail connectors each connecting two water nails, and elbows each mounted at a water outgoing end of one water collection pipe or one water nail. The system overcomes the defects of ease of blockage and low efficiency in a traditional drainage material and successfully solves the problems of water collection and drainage in soil. The construction method comprises: testing the nail, setting out, drilling, mounting, and connecting the water collection pipe. The existing roadbed slope is drilled, the water nails are placed in the drilled holes, comprehensive full-length drainage is achieved, long-term drainage efficiency is high, construction is fast, and silt entrainment prevention and blockage prevention are featured. This system can be constructed in narrow space and under railway train operation conditions, construction speed is high, and economic benefit is high.

Description

technical field [0001] The invention relates to a drainage system for a roadbed slope, in particular to a water nail drainage system for a railway roadbed slope, and also relates to a construction method of the drainage system. Background technique [0002] Geological disasters (landslides, collapses, debris flows, ground subsidence, etc.) of railway embankment slopes have seriously affected the safety and normal operation of railways, which are lifeline projects. According to statistics, more than 99% of geological disasters are related to water activities. For geotechnical structures, especially the fill behind slopes and retaining walls, if a large amount of water that exists or infiltrates into the soil cannot be removed quickly and effectively, landslides and retaining wall collapses will often result. Especially in rainy weather, a large amount of rainwater seeps into the soil, and the water treatment is more urgent. It needs to be drained in a timely and effective ma...

AI Technical Summary

Problems solved by technology

Soil particles sink under the action of head pressure and gravity and enter the drainage pipe together with the water, which can easily lead to soil loss and blockage of the drainage pipe. Holes clogged, rendering drainpipes ineffective

Actual investigations and observations have shown that most of the conventional drainage holes buried in structures such as slopes, retaining walls, and roadbeds have become clogged or even completely lost their drainage function after being used for a long time.

[0004] Chinese invention patent "drainage method" (patent number: ZL97115515.1) and Chinese invention patent "drainage method and drainage pipe used in this method" (patent number: ZL99126199.2), the existing problems are: railway embankment slope Traditional drainage materials are easy to block, low efficiency, high traffic density, short construction time and narrow construction space

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