Full-section heading machine and construction method for super-large-diameter vertical shaft

Abstract

The invention discloses a full-section heading machine for a super-large-diameter vertical shaft. The full-section heading machine comprises an excavation system, a shield body, a main driving system, a deslagging system and a hoisting system; the excavation system comprises a pilot tunneling device and a cutterhead assembly; a mounting hole for mounting the pilot tunneling device is formed in the cutterhead assembly; the pilot tunneling device comprises a pilot cutterhead, a pilot shield body, a pilot driver and the like, and the pilot cutterhead is connected with the pilot shield body through the pilot driver to realize excavation of a pilot hole; and the hoisting system comprises a hoisting assembly, the hoisting assembly comprises a lifting device and a traction piece, the lifting device is connected with the shield body through the traction piece, and the traction piece is in cable-stayed connection with the shield body. The excavation system and the deslagging system which are of special structures are adopted, the problems of insufficient power and difficult deslagging are solved, and full-section tunneling and deslagging of the super-large-diameter vertical shaft (the diameter is larger than or equal to 16 m) are successfully achieved. The invention discloses a full-section construction method for the super-large-diameter vertical shaft, which is based on the heading machine and efficiently realizes the full-section construction for the super-large-diameter vertical shaft.

Description

technical field [0001] The invention relates to the technical field of shaft construction, in particular to a super-large-diameter vertical shaft full-face boring machine and a construction method thereof. Background technique [0002] Shafts, also known as vertical shafts, are the main passages for underground mineral mining, ventilation of large and long tunnels and other underground projects, and have an irreplaceable position in underground projects. [0003] Existing shaft construction mainly includes drilling and blasting method and drilling method, specifically: [0004] The first type, drilling and blasting method: the main construction equipment of this method includes umbrella drill / small excavator, rock grabbing machine, hanging pump, derrick, hoisting winch, stabilizing car, bucket, etc., and its main processes include rock drilling, rock loading, lifting , Drainage, ventilation, formwork lining, etc. Shaft construction needs to be equipped with sealing plates, ...

AI Technical Summary

Problems solved by technology

[0011] 1. Power problem: For the construction of super-large-diameter shafts, based on the existing equipment structure, the driving power of the cutter head cannot meet the requirements, and the excavation construction cannot be carried out.

[0012] 2. The problem of slag discharge: For the construction of super-large-diameter shafts, the amount of slag discharge is large, and the existing bucket slag discharge method is slow in transporting slag, which cannot meet the demand for slag discharge; the existing mud pipeline slag discharge is controlled by the structure of the pipeline system Due to the limitation of slag, it has high requirements for slag, which cannot meet the needs of complex slag composition and large amount of slag discharge in super-large-diameter shafts.

[0013] 3. The stability of the excavation surface: the drilling and blasting method construction, the excavation surface is not a full section, and it is connected to the outside world, the excavation surface and the retaining wall cannot maintain pressure, the construction efficiency is low and the safety is poor; the drilling rig method construction requires more shafts with large sections Secondary expansion excavation, the excavation face and retaining wall cannot maintain pressure, the verticality control of the shaft is poor, and the comprehensive excavation efficiency of the bedrock stratum is low

[0014] 4. Hoisting problem: the existing equipment adopts the vertical hoisting method, and the load-bearing steel structure adopts the cantilever beam force mode. The weight of the load-bearing steel structure is heavy and the cost is high; Increase the construction strength of the ground lock foundation and further increase the difficulty of construction

Images