Tunnel construction method

Abstract

The invention relates to a tunnel construction method. The method comprises the following steps of 1) construction position measurement and drawing drafting in which positions of a concentrated yard,a coal track cross-cut, a goaf mounting / dismounting chamber and a single-track suspension maintenance chamber are drafted on a drawing concretely according to a proportional scale; and 2) preliminarydrafting and construction position predetermining in which after drafting, it is preliminarily determined that door construction of a substation is carried out in the construction position which is 29.649m from a point H1 of a group coal air return way in the orientation of 5DEG58'27'' in the descending of 3 / 1000, and a tunnel is made through 16.913m behind a point C6 of a concentrated yard. Through in the position 16.913m behind the point C6 of the concentrated yard in a fourth goaf is replaced by through 45.707m in front of a point C3 of the concentrated yard in the fourth goaf by right turning, a predetermined scheme is further improved, the tunnel is changed from linear to L-shaped, the technology is optimized, the needed length for substation design is met, the construction period isshortened, the construction amount of the tunnel is reduced, and waste of fund is avoided.

Description

technical field [0001] The invention relates to the technical field of roadway construction methods, in particular to a roadway construction method. Background technique [0002] The roadway is a variety of passages drilled between the surface and the ore body, which are used for transporting ore, ventilation, drainage, pedestrians, and various necessary preparations for new excavation of ore for metallurgical equipment. These passages are collectively referred to as laneways. [0003] The existing roadway construction generally requires calculation and drawing before determining the specific implementation method, but the general linear design will cause a large difference between the area obtained by time processing and the expected area, and consume more resources while still meeting the needs and funds; and during construction, there will be a problem of construction position offset. Even if the construction offset angle is small, it will cause a large offset after long...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing roadway construction generally needs to be calculated and drawn before determining the specific implementation mode, but the general linear design will make the area obtained by time processing differ from the expected area, which can also meet the needs. At the same time, it consumes more resources and funds; and during construction, there will be a problem of construction position offset. Even if the construction offset angle is small, it will cause a large technical problem of offset after long-term construction , and propose a roadway construction method

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