Permeable Gravity Retaining Wall Structure Embedded with Crushed Stone Columns and Its Construction Method

Abstract

The invention discloses a water-permeable gravity type retaining wall structure with embedded gravel columns and a constructing method of the retaining wall structure. The retaining wall structure comprises a concrete wall body. The concrete wall body comprises a front side wall, a rear side wall, longitudinal walls and a base which are integrated through pouring in a cast-in-place mode. The frontside wall and the rear side wall are connected through longitudinal walls at intervals. The space defined by the base, the front side wall, the rear side wall and the longitudinal walls is filled with the embedded gravel columns. The space between the concrete wall body and a side slope soil body is filled with graded sand filter bed filling earth. The front side wall and the rear side wall are each provided with a drainage channel. The drainage channels communicate with the embedded gravel columns and the graded sand filter bed filling earth. The concrete wall body and a behind-wall graded gravel layer form a drainage system, a large amount of water can be drained within a short period of time, the drainage decompression effect is realized, the side slope soil body is prevented from sliding, stability is high, and construction is convenient.

Description

technical field [0001] The invention relates to the technical field of slope support and slope drainage, in particular to a permeable gravity retaining wall structure embedded with gravel columns and a construction method thereof. Background technique [0002] In the mountainous area of ​​southwestern my country, the rainfall is very heavy, and landslides are extremely prone to occur. The gravity retaining wall maintains itself and the stability of the slope by the weight of the retaining wall. However, due to heavy rainfall, the water content of the slope increases, which can easily lead to the instability of the gravity retaining wall. Therefore, the permeable function of the gravity retaining wall Particularly important. Many retaining walls have drainage holes in the wall for drainage, but when encountering heavy rainfall, it is often difficult for the drainage holes in the wall to discharge a large amount of water in a short time, and because the rain is accompanied by...

AI Technical Summary

Problems solved by technology

The retaining wall is simple in construction and has good water permeability, but the structure has light weight and poor stability. In addition, during heavy rainfall, the soil behind the wall is accompanied by a large amount of rainwater, and it is very likely to slide rapidly. The groove behind the retaining wall may be in the Blockage state, unable to remove the water in the unstable soil in time

Invention patent CN109972653A discloses a permeable double-row retaining wall for urban buildings. The retaining wall is provided with drainage holes on the concrete base, and two rows of walls of unequal height are arranged on the upper part, which are connected by ribs to form a trapezoidal hollow body. The gravel backfill layer is laid on the gap. The structural performance of the retaining wall is good. However, in the case of heavy rainfall in mountainous areas, the seepage water of the hillside cannot be discharged through the retaining wall, and the seepage energy in the slope soil cannot be released, which is very easy. Disaster occurred

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