Method realizing drainage and consolidation of hydraulic fill soil as well as soil mass improvement through utilizing straw pile

Abstract

The invention relates to the technical field of hydraulic fill soil improvement through using a straw pile, in particular to a method realizing drainage and consolidation of hydraulic fill soil as well as soil mass improvement through utilizing the straw pile. The method comprises the following steps that the straw pile is pressed into the hydraulic fill soil, wherein the diameter of a straw piletop is larger than that of a straw pile body, the contact between the hydraulic fill soil and the straw pile body can be delayed when the straw pile is pressed, and the resistance is reduced; an anti-pressure pile core is drawn out, wherein the anti-pressure pile core is made of a steel pipe, and the anti-pressure pile core can be drawn out and recycled from the straw pile body after pile pressingis finished; the straw pile can form a hollow straw drainage cavity by utilizing good permeability, abilities to degrade fiber cloth, water permeability and slurry-blocking property of straw, whereinan inner lining ring is arranged in the straw pile body, so that the straw pile body after being subjected to pressing of the hydraulic fill soil is prevented from collapsing towards the hollow cavity, the blockage is avoided, and water is conveniently discharged from the hollow cavity; and a drainage pipe is inserted into the straw pile body at regular intervals for drainage so that the hydraulic fill soil can be consolidated. According to the method, the pile top can be slowly decomposed and the straw pile body can be decayed and degraded, organic matter of the hydraulic fill soil can be increased, and the looseness, water permeability and air permeability of the local hydraulic fill soil can be improved. s

Description

technical field [0001] The invention relates to the technical field of improving dredged fill with straw piles, in particular to a method for draining and consolidating dredged fill with straw piles and improving soil. Background technique [0002] Dredger fill generally has the characteristics of small bulk density, large void ratio, high water content, extremely low strength, high compressibility, and low permeability. The foundation or subgrade composed of dredge fill has poor strength and generally cannot be directly used in engineering projects. At the same time, the water permeability and air permeability of the dredged fill are extremely poor, the natural consolidation speed is very slow, and it is difficult for ordinary green plants and green trees to grow; if it is necessary to carry out engineering construction and greening on the dredged fill site, artificial deal with. [0003] At present, the consolidation and improvement methods of dredger fill include natural...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned shortcomings in the prior art, the present invention provides a method for draining and consolidating dredged fill soil and

Images