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

A mud-water shield, long-distance technology, used in earth-moving drilling, mining equipment, tunnels, etc., can solve the problem of stuck or blocked slurry pipes and quarry boxes, reduce the opening rate of the cutter head, and increase construction risks, etc. problems, to achieve the effect of reducing subsequent equipment damage, reducing construction risks, and improving slag-carrying capacity

Inactive Publication Date: 2018-03-30
CHINA CONSTR COMM ENG GRP UNITED
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  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment Construction

[0045] The long-distance excavation method of the mud-water shield passing through the anchor cable area includes the following steps.

[0046] Step 1: Reinforce the soil within the range of 5m~6m on both sides of the centerline of the excavated tunnel respectively, and the reinforcement depth is at least 1m into the water-resistant layer below the tunnel structure.

[0047] Step 2: Carry out drilling and cable routing in the reinforcement area; the drilling includes the first drilling and the second drilling; the specific steps include the following.

[0048] Step 1: Carry out the drilling of the first borehole; there are several first boreholes arranged at intervals longitudinally along the left structural sideline of the tunnel to be excavated. The diameter of the first borehole is 1200mm~1800mm. The bottom of the hole is drilled to the position of the tunnel floor, and the distance between adjacent first drilled holes is 1000mm~1400mm.

[0049] Step 2: Then remove the anc...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/00E21D9/12E21B33/13C04B28/02
CPCE21D9/06C04B28/02C04B2111/00724C04B2201/10C04B2201/20E21B33/13E21D9/00E21D9/001E21D9/0607E21D9/126C04B14/361
Inventor 曹金鼎庞林刘耀军尹清锋陈喜健张继军韩志亮李涛白洋陈海国杜璟郝佩陆韬肖健代云峰安沛单文玉刘文强顾殿杰
Owner CHINA CONSTR COMM ENG GRP UNITED
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