A kind of multi-effect pile and its construction method for soil consolidation and erosion reduction and slow-release fertilization in karst mountains

Abstract

A multi-effect pile used for soil consolidation, erosion reduction and slow-release fertilization in karst mountains and a construction method thereof. It includes an outer pile tube and an inner pile tube, and slow-release materials are filled between them, and a plurality of small holes are set on the wall of the outer pile tube; the slow-release material includes soil-fixing and corrosion-reducing materials and fertilizers; the inner pile tube is provided with steel bars cage and poured with concrete. The construction methods include: A. Construction preparation; B. Staking out the pile position; C. Burying the outer pile barrel; D. Sinking the outer pile barrel; E. Clearing the hole; F. Making and installing the reinforcement cage; Materials; H. Preparation of fertilizers; I. Concrete pouring; J. Filling of soil-fixing and erosion-reducing materials and fertilizers; L. Pile foundation detection. The multi-effect pile of the present invention can enhance the soil-fixing and erosion-reducing effect in karst mountains, reinforce the hole wall and the soil foundation around the pile, prevent the hole from collapsing, and improve the bearing capacity of the pile body; and the slow-release fertilizer contained therein can ensure plant growth As a result, the construction method of the multi-effect pile is simple in technology and low in construction cost.

Description

technical field [0001] The invention relates to the technical field of pile foundation engineering construction and soil restoration, in particular to a multi-effect pile used for soil consolidation and erosion reduction and slow release and fertilizer enhancement in karst mountains and a construction method thereof. Background technique [0002] Karst landforms refer to various landforms formed by the dissolution of soluble rocks by water and the accompanying mechanical action. Karst landforms are widely distributed in Guangxi, Guizhou, Yunnan and other places in China. In recent years, with the large-scale engineering construction, mining and a series of infrastructure construction, a large number of exposed slopes have been formed in karst landforms, resulting in a large number of rock and soil slopes that cannot be restored to vegetation, and their surfaces will recover naturally in a short period of time. Vegetation coverage is difficult to achieve, and the existing kar...

AI Technical Summary

Problems solved by technology

However, due to the influence of geological conditions, Kashasha landform has poor geological conditions, there are karst caves, and the construction is difficult. At the same time, the rock cores of this landform are in the shape of gravel-columnar, and there are karst caves in some drill holes, and the cores are broken. The sampling is very difficult. difficulty

In addition, the wall protection method of the traditional pile is not easy to form when it meets the karst cave area, and the karst cave filling has a large lateral force on the side wall, and the filling is easy to flow into the pile, requiring multiple holes to be formed, and it is difficult to control when pouring concrete Concrete quality is easy to cause quality problems such as collapsed holes, interlayers, and necking