A seepage-enhancing siphon drainage system for low-permeability soil slopes

Abstract

The invention relates to the technical field of drainage of low-permeability geotechnical engineering, in particular to a permeation increase siphon drainage system for a low-permeability soil slope. The permeation increase siphon drainage system is especially suitable for engineering drainage of low-permeability-coefficient water-rich strata. The permeation increase siphon drainage system is composed of a water-permeable concrete fracturing injection system and a siphon drainage system body. For the loess slope with low permeability and collapsibility, water-permeable concrete is pressed into the loess slope with low permeability, a high-permeability network channel is formed, and the range of influence that a cone of depression is generated by a single siphon drainage hole is widened. By means of a high-permeability water-permeable network, the drainage efficiency is increased; based on the high-lift siphon principle, redundant underground water in the slope is automatically and efficiently drained in real time, the underground water level of the slope can be controlled to be blow the safety water level, and no external power is needed; and the beneficial effects of being low in manufacturing cost and high in efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of low-permeability soil drainage, in particular to a drainage method for forming a high-permeability network by pressing in permeable materials, and is especially suitable for drainage of foundations and side slopes composed of low-permeability soil. Background technique [0002] In the field of foundation treatment and landslide prevention and control, the timely discharge of groundwater contained in the soil is the key to the success of engineering treatment. However, for soils with very low permeability, the drainage process often takes a long time, which greatly affects the progress of the project. Increasing the drainage of low-permeability soils per unit time has become the main way to solve this problem. [0003] At present, in the field of foundation treatment, sand wells and plastic drainage plates are commonly used as drainage channels, and the pore water pressure is increased by means of surcharg...

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Problems solved by technology

[0004] Aiming at the shortcomings of the siphon drainage method in the prior art, such as low drainage efficiency in low-permeability soil, small influence range, and the need for a large amount of manpower and material resources, the technical problem to be solved by the patent of the present invention is to use permeable materials to pressurize the low-permeability soil. Split into a network to form a highly permeable water-permeable network

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