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Abstract

By studying the construction process of ground-connected wall slurry trenches in the rock-throwing reclamation areas, this paper explored the effects of such factors as trench section width, weight of the slurry trench, parameters of the rock-throwing layer, the reinforcement zone range of the trench wall, and grouting parameters on the stability of the trench wall and the disturbance of the surrounding strata. Meanwhile, it measured the deformation modulus of the grouting reinforcement zone by experiments, and obtained the shear strength parameters from empirical formulas. The ground deformation characteristics induced by the construction of ground-connected wall in rock-throwing reclamation areas under different grouting reinforcement schemes were calculated and analyzed via the finite element method. The calculation results indicate that the maximum lateral displacement of the soil on the trench wall occurs at 1/3 to 1/2 of the trench section depth. Reinforcing the surrounding strata of the trench wall via grouting can reduce the trench wall’s lateral deformation and surface settlement. Additionally, compared to single slurry reinforcement, the joint grouting of mortar and double liquid slurry is more conducive to trench wall stability. The decreases in the deformation modulus of the rock-throwing layer and width of the trench section are beneficial for reducing the lateral deformation of the soil on the trench wall. Under too much weight of mud, the horizontal displacement of the soil on the trench wall presents an “inverted S-shaped” curve with the increasing depth, which means that lateral deformation of the soil on the trench wall will occur near the bottom of the trench section.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.001

First Page

1

Last Page

7

Submission Date

March 2025

Reference

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