Giant heavy laver land slide pre-stress anchor cable antiskid tunnel construction method and novel prevention structure

Abstract

The invention relates to a method for constructing a prestress anchor rope anti-skid tunnel on a thicker layer landslide. The method comprises the following steps: carrying out on-site investigation, examination and engineering geologic investigation of the thicker layer landslide; confirming corresponding situation like the slip surface position of the thicker layer landslide and the like; calculating through the landslide thrust; carrying out the prestress anchor rope anti-skid tunnel design prior to the space position laid out by the prestress anchor rope according to the landslide thrusting force under the most unfavorable load assembling conditions; constructing from both sides of the landslide body section by section, and minimizing the section length; casting a rib post and a ground beam of reinforced concrete in place on the mountain side of the tunnel and the ground, and casting linings of the reinforced concrete in place at other positions; laying out the prestress anchor rope on the rib post and the ground beam, and making the anchor rope pass through the mountain landslide surface. An anchor is fixed in the stable and hard terrane. The top arc of the tunnel is provided with a water draining hole, and the bottom is provided with a drainage ditch. The construction method can improve the stability of the thicker layer landslide and has the advantages of economy, expeditiousness, convenience and safety.

Description

technical field [0001] The invention relates to landslide reinforcement treatment engineering, especially in the aspect of reinforcement engineering structure of extremely thick landslides, a novel structure for reinforcement of anti-sliding tunnels with prestressed anchor cables for extremely thick landslides is proposed, the structure can effectively reinforce extremely thick landslides, increasing stability of landslides. Background technique [0002] Landslide control is a disaster prevention and control project with complicated technology and difficult construction. In the 1950s, landslide control in my country mainly adopted measures such as surface drainage, clearing and load reduction, filling back pressure, anti-sliding retaining walls, and mortar masonry rubble protection. In the late 1960s, my country first adopted anti-slide pile technology in railway construction and achieved success. The emergence of anti-slide pile technology has made the treatment of some d...

AI Technical Summary

Problems solved by technology

[0012] However, for huge thick-layer landslides, when the buried depth of the sliding surface reaches tens of meters, it is difficult for the above-mentioned engineering prevention and control structures, whether anti-slide piles or prestressed anchor cable structures, to strengthen and protect the landslide.

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