Cross solid structure of coal mine underground roadway

Abstract

The invention belongs to technical field of coal mine underground excavation roadway construction, and particularly relates to a cross solid structure of a coal mine underground roadway, and the crosssolid structure solves the problems that construction time is long, a great deal of human and financial resources are wasted, construction progress is affected, and water drainage and transportationare difficult. The cross solid structure comprises a bottom area, a primary transportation main roadway, an excavation roadway, a protective cover, a water drainage ditch, a small water sump and a water guide tube, wherein a bottom area is excavated under a crossed part of the primary transportation main roadway and the excavation roadway, and the section of the bottom area is in the shape of an inverted trapezoid; the bottom area is arranged along the center line of the excavation roadway, passes through the primary transportation main roadway from the excavation roadway, and stops at the excavation roadway, and comprises a starting section, a penetrating section and a stop section; the protective cover is arranged on the top of the penetrating section; the small water sump is positionedat one side of the excavation roadway, and a water pump is arranged inside the small water sump; and the water drainage ditch extends to the small water sump. The cross solid structure is small in construction amount, is low in construction difficulty, reduces the cost, shortens construction progress, and solves the water drainage and transportation problem.

Description

technical field [0001] The invention belongs to the technical field of coal mine underground tunneling roadway construction, and in particular relates to a coal mine underground roadway intersecting three-dimensional structure. Background technique [0002] At present, when there is an intersection between the main haulage roadway and the excavation roadway in the coal mine, the traditional construction wind bridge technology is generally used. The wind bridge refers to a facility that is installed at the intersection of the inlet and return air so that the return air and the inlet air do not mix with each other. [0003] The existing wind bridge construction technologies in our mine include the following: [0004] Chinese Invention Patent Publication CN103410550B discloses such a coal mine downwind bridge construction method. This coal mine underground wind bridge construction method, when constructing the return air main road, after reaching the position where the wind b...

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a coal mine underground roadway in order to solve the problems of long construction time caused by the use of traditional construction wind bridge technology when the main transportation

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