Comprehensive supporting structure of deep side slope of complex steep cliff and construction method

Abstract

The invention relates to a comprehensive supporting structure of a deep side slope of a complex steep cliff. The comprehensive supporting structure mainly comprises mini piles, prestressed anchoring rods, prestressed anchoring ropes, a concrete protecting slope and an operating platform, wherein the mini piles are arranged at the inner side of the cliff; scaffolds of the operating platform are erected by layers along the cliff; vertical rods of some scaffolds are anchored to section steels which are anchored into the rock wall; grouting bodies are arranged in section steel grooves; inclined supports are arranged at the lower parts of the section steels and are welded to wall connectors which are arranged below the inclined supports and anchored into the rock; transverse rods of some scaffolds are fixed to the wall connectors which are anchored into the rock through connecting fasteners; equipment slide rails are arranged on the operating platform; the prestressed anchoring rods, the prestressed anchoring ropes and the concrete protecting slope are arranged on the slope surface; a breaking zone grouting body is arranged into a breaking zone on the slope surface. With the adoption of the comprehensive supporting structure, the difficulty in erecting of the operating platform on the deep side slope of the complex steep cliff can be effectively solved; meanwhile, a plurality of structures are utilized to enable comprehensive supporting, so that stone can be effectively prevented from falling from the side slope, and the technical and economic benefits are outstanding. The invention also provides a construction method of the comprehensive supporting structure of the deep side slope of the complex steep cliff.

Description

technical field [0001] The invention relates to a comprehensive support structure and a construction method for complex steep cliffs and deep slopes. The utility model belongs to the field of slope engineering and is suitable for support construction of unstable slopes, especially for comprehensive support construction of complex steep cliffs and deep slopes. Background technique [0002] At this stage, with the rapid development of my country's construction industry. A large number of complex steep cliffs and deep slopes appear during construction, and the protection problems are very prominent. In order to meet the dual goals of safety, reliability and economical rationality, it is very important to deeply analyze the disease characteristics of complex steep cliff slopes and carefully select its treatment engineering scheme. [0003] The traditional slope support usually adopts hanging nets, bolts and shotcrete, and if necessary, additional prestressed anchor cables and ...

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Problems solved by technology

[0003] The traditional slope support usually adopts hanging nets, bolts and shotcrete, and if necessary, additional prestressed anchor cables and retaining supports, etc., but for complex cliffs and deep slopes, the implementation of traditional techniques is difficult, mainly in the following aspects: 1) The cliff is steep and irregular, and it is difficult to set up the cliff operation platform, and the stability is difficult to guarantee; 2) The strength of the rock wall is high, resulting in low drilling efficiency, and the construction cannot be guaranteed, and the selection of drilling machinery is high; 3) Due to the The slope is irregular, and the slope surface in some sections is convex into the pit, and some anchor rods and anchor cables may intersect at a deep level; 4) The stability of the fault is poor, and at the same time, the crack water is easy to erode the slope support; 5) After the blasting is completed, the rock wall The section is irregular, so it is difficult to fit the steel mesh and the cliff wall when hanging the net and spraying grout for the support of the cliff slope, and it is difficult to control the thickness of the grouting

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