Tunneling method of slurry shield passing through anchor cable zone in long distance

Abstract

A tunneling method of a slurry shield passing through an anchor cable zone in a long distance comprises the following steps that 1, reinforcing is conducted on soil masses within the range of 5 m-6 mon the two sides of the central line of a to-be-excavated tunnel; 2, drilling and anchor distributing are conducted on the reinforcing areas; 3, a manual gate valve is mounted between a quarrying boxof a shield mechanism and a slurry discharging gate valve of a soil bin; 4, the quarrying box of the shield mechanism is transformed; 5, a slurry parameter used by the shield mechanism is set; and 6,a shield tunneling parameter is set, till excavation of a designed shield route is completed, and construction is ended. The tunneling method solves the technical problems that a slurry discharging pipe and the quarrying box are clamped deadly or blocked by an anchor cable, a cutter disc is wound, the aperture ratio of the cutter disc is decreased, and a cutter tool is damaged in the long distanceanchor cable zone passing through construction process of a traditional slurry shield.

Description

technical field [0001] The invention belongs to the technical field of mud-water shield construction, and in particular relates to a tunneling method for mud-water shield long-distance crossing anchor cable areas. Background technique [0002] As the most advanced super-large special equipment for tunnel excavation, the mud shield machine is a high-tech construction equipment that realizes excavation, excavation, support, etc., and is widely used in urban rail transit, railways, highways, municipal, hydropower, etc. Wait for the tunnel project. Due to the concentration of urban buildings and the uncertainty of the construction process of the foundation pit enclosure, it is inevitable that there will be anchor cables in a certain area of ​​the tunnel, which will increase the risk of shield construction and the difficulty of construction technology. When the shield tunnels in the anchor cable area, on the one hand, it is necessary to strictly control the ground subsidence, re...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a long-distance excavation method for the mud-water shield to cross the anchor cable area, to solve the problem that the slurry discharge pipe and the quarry box are stuck or blocked during the construction of the traditional mud-water shield long-distance crossing the anchor cable area. The technical problems of blockage, entanglement of the cutter head, reduction of the opening ratio of the cutter head and the collapse of the cutter, and the technical problems of frequent cleaning of pipelines and quarry boxes that affect the construction progress, increase construction risks, and lead to high construction costs

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