Reinforcing and surcharge structure used for preventing deep soft foundation dump against floor heave and instability

Abstract

The invention discloses a reinforcing and surcharge structure used for preventing a deep soft foundation dump against floor heave and instability. The reinforcing and surcharge structure used for preventing the deep soft foundation dump against floor heave and instability is composed of a vertical-horizontal consolidated drainage system and a hierarchical surcharge preloading and counter pressingsystem. The vertical-horizontal consolidated drainage system is jointly composed of gravel piles (3), geotextile (2) and a gravel cushion layer (1). The hierarchical surcharge preloading and counterpressing system is located on the upper part of the deep soft foundation gravel pile vertical-horizontal consolidated drainage system and adopts large stone blocks, gravel and or broken stone materials to conduct graded surcharge preloading. According to the reinforcing and surcharge structure used for preventing the deep soft foundation dump against floor heave and instability, an effective drainage channel can be provided for saturated silts and other fine particle materials scoured on the downstream side of the dump, the internal drainage time of the soft foundation is shortened, consolidation of the saturated soft foundation is accelerated, the rock-soil mechanics index and bearing capacity of the base soft foundation are improved, the stability of the bearing capacity of the soft foundation in the surcharge preloading process is effectively improved and controlled, the internal floor heave is prevented, and settlement due to uneven inner stress is prevented.

Description

technical field [0001] The invention belongs to the technical field of dump site safety disposal, and in particular relates to a treatment method for deep and soft foundations of dump sites, which is particularly suitable for thick rainwater alluvial deposits at the slope foot of the dump site, which may easily cause the bottom of the dump site Security governance for instability and destruction. Background technique [0002] In recent years, with the development of open-pit mining technology, the production scale of mines has become larger and larger, and the amount of soil (rock) discharged from mines has also increased. Geological problems even pose a serious threat to the personal and property safety of downstream residents. Especially in extreme weather, the slope toe of the dump site is often washed by rainwater, thereby accumulating thicker fine-grained materials such as saturated sediment, which poses a serious safety hazard to the later discharge of soil at the slo...

AI Technical Summary

Problems solved by technology

The research shows that the base strength of the thick and soft hillside determines the dump volume and safety of the dump, but this paper does not give a specific safety treatment method during the dumping of the dump on the thick and soft base

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