A kind of vertical strip roadway excavation method

Abstract

The invention discloses a vertical strip roadway excavation method. By changing the one-time roadway forming technology of the prior art roadheader, when excavating the roadway, it is carried out at intervals along the vertical direction in the roadway according to the actual geological rock layer properties of the mine. For the mining of rock formations with a certain width, the excavation working faces of each rock formation are parallel to each other and in the shape of strips, and the section perpendicular to the excavation working face is an arched upper and lower two-stage structure as a whole, the lower section is rectangular, and the upper section is circular. arc. The present invention makes full use of the unmined rock pillars to support the roadway, drills holes and installs bolts in the mined space for primary support; after the primary support is completed, the unmined strip-shaped rock pillars are excavated again, Drill holes and install bolts in the space where the strip rock pillars have been mined to support the roadway. The invention is suitable for application under the condition of large ground pressure, has high working efficiency and fast excavation speed, can reduce the transportation cost of support equipment, and reduce the labor intensity of workers.

Description

technical field [0001] The invention relates to a roadway excavation method, in particular to a vertical strip roadway excavation method. Background technique [0002] The ground pressure in deep mining is high, and roadway excavation is difficult. At present, whether it is a continuous coal mining machine or a roadheader at home and abroad, most of the roadways are formed at one time. In the case of large ground pressure, rapid support is required, and sometimes temporary support is required. If the support speed cannot keep up, roadway collapse accidents are prone to occur. [0003] The driving speed of the roadway is one of the main problems affecting the benefit of coal mines, and it is particularly important to find an effective method for quickly driving the roadway under the condition of large ground pressure; Contents of the invention [0004] The object of the present invention is to provide a vertical strip roadway excavation method suitable for coal mine roadwa...

AI Technical Summary

Problems solved by technology

[0002] The ground pressure in deep mining is high, and roadway excavation is difficult. At present, whether it is a continuous coal mining machine or a roadheader at home and abroad, most of the roadways are formed at one time. If the support speed cannot keep up, roadway collapse accidents are likely to occur

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