Rapid expansive soil restoration method for enhancing reinforcement and drainage

Abstract

The invention provides a rapid expansive soil restoration method for enhancing reinforcement and drainage. The rapid expansive soil restoration method comprises the following steps that a drainage pipe is prepared, wherein the drainage pipe comprises a conical head, a body and a tail which are connected in sequence, and the body comprises a split semicircular bottom and a semicircular grid part which are formed along the longitudinal direction; then a water permeable film is arranged on the semicircular grid part in a paved mode; the drainage pipe is pressed into a designated position of a slope from the side face in the horizontal direction in a mode that the drainage pipe is directly pressed into the expansive soil slope, before the drainage pipe is driven in, a stainless steel sheath isarranged outside the drainage pipe in a sleeving mode, and the drainage pipe is screwed with the conical head in a threaded mode; the drainage pipe and the stainless steel sheath are driven in together through pressure, and after the drainage pipe and the stainless steel sheath reach the preset position, the stainless steel sheath is reversely screwed out and removed; and in the drainage process,water in expansive soil penetrates through the water permeable film and the semicircular grid part and is drained after entering into the semicircular bottom and flowing to the tail along the pipe inner wall. The rapid expansive soil restoration method for enhancing reinforcement and drainage has the functions of soil layer drainage and soil body reinforcement (reinforcement), and can be used forslope protection and rapid restoration.

Description

technical field [0001] The invention relates to the technical field of expansive soil slope support, in particular to a rapid repair method for expansive soil that enhances reinforcement and drainage. Background technique [0002] Most of the diseases of slopes and their retaining engineering are related to water activities. If the moisture inside the soil cannot be removed in time, it is easy to cause disasters. Therefore, timely and effective drainage is extremely critical. At present, the internal drainage method of slopes and retaining structures is mainly gravity drainage, such as figure 1 As shown, for example, PVC pipes are used, that is, holes are opened at intervals on the top of conventional water pipes, and saturated water is collected through the holes. Gravel and graded sand layer, its non-woven fabric, gravel and sand layer are used as filter layer. For this kind of traditional drainage facilities, after a certain number of years of service, soil particles t...

AI Technical Summary

Problems solved by technology

However, in the process of drainage, the drainage design of the prior art is affected by the service life on the one hand, and the blockage is easily caused by vertical gravity drainage on the other hand, and due to the expansion and contraction characteristics of expansive soil, the traditional drainage design cannot There are difficulties in applying the effect

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