An anchoring system and method for strengthening ground fissures using magnetic cement mortar

Abstract

An anchoring system and a strengthening method for strengthening ground fissures by utilizing magnetic cement mortar. The present invention utilizes the mutual attraction between the magnetic cement mortar and the magnetic anchorage, drills anchor holes on the soil on both sides of the ground fissure, drives inward a special anchor rod equipped with a magnetic backing plate and anchors it with magnetic cement mortar, and A full-coverage magnetic cement mortar net is arranged around the entire soil cross-section around the magnetic anchor, combined with a connecting sleeve arranged in the ground fissure space with NdFeB magnet patches, and finally a comprehensive magnetic field environment is formed between the ground fissures. The interaction force between the magnetic backing plate, cement mortar and the connecting sleeve, together with the anchoring force of the anchor rod, exerts opposite traction force on both sides of the ground fissure to resist the self-weight of the inclined soil of the ground fissure, The effect of lateral tension and bending moment can achieve the purpose of strengthening ground fissures, preventing and limiting secondary cracking and widening of ground fissures.

Description

technical field [0001] The invention relates to an anchorage system and a reinforcement method for reinforcing ground fissures with magnetic cement mortar, belonging to the technical field of geotechnical engineering. Background technique [0002] Ground fissures are a geological phenomenon in which surface rocks and soils are cracked by natural or human factors, and cracks of a certain length and width are formed on the ground. Ground fissures have strong potential hazards to engineering safety and people's lives. They will cause local housing cracks, building damage, farmland destruction, road deformation, pipeline rupture, etc. It will also cause water to seep into the ground fissure zone, cause the foundation to soften and deform, and even damage the safety of the cavern. It can also cause damage to the joints of the built natural gas pipelines, sewage pipes, sewers, etc., and leak flammable, explosive and toxic gases. There are many soil fissures in the ground fissure ...

AI Technical Summary

Problems solved by technology

It will also cause water to seep into the ground fissure zone, cause the foundation to soften and deform, and even damage the safety of the cavern. It can also cause damage to the joints of the built natural gas pipelines, sewage pipes, sewers, etc., and the leakage of flammable, explosive and toxic gases

There are many soil fissures in the ground fissure deformation zone, which may cause partial collapse of the foundation pit wall or tunnel during construction, and concentrated water seepage along the fissure zone, and uneven settlement of the base

Different from its huge potential disaster, the repair and reinforcement measures for ground fissures are very scarce in engineering technology at present. For shallow ground fissures, only cement filling is usually used to fill them. For earthquake cracks and active cracks in basement fractures, current technology The means are difficult to resist, and usually only real-time monitoring can be adopted but no reinforcement and repair can be carried out

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