Mountain tunnel mechanized construction method based on high pressure carbon dioxide cracking

Abstract

The invention discloses a mechanized construction method for mountain tunnels based on high-pressure carbon dioxide fracturing. 1) A digging and reforming drilling rig is used to drill holes at designated positions on the tunnel face, and high-pressure gas generated by an air compressor is used to clean the holes. 2) Fill the boreholes at different positions with carbon dioxide detonating tubes, and arrange the detonating wires at the same time. 3) Carry out electric detonation. 4) The excavator with its own crushing head is used to find the roof of the cave wall after blasting, and the dangerous rocks around the cave roof and the cave are removed. 5) Clean and level the rock surface of the tunnel, remove the dangerous rocks on the injection interface, and fill the obvious holes. The invention can improve the construction efficiency of the excavation tunnel section in mountain tunnel construction, reduce manpower input, improve the construction environment and shorten the construction period.

Description

technical field [0001] The invention relates to a mechanized construction method for mountain tunnels based on high-pressure carbon dioxide fracturing, and belongs to the technical field of tunnel engineering. Background technique [0002] At present, with the vigorous development of my country's transportation infrastructure, the number of tunnel projects continues to increase, especially in the western mountainous areas where a large number of tunnel projects are planned. The traditional tunnel construction method is relatively complicated. The excavation and blasting mainly uses explosives, which will A large amount of dust and harmful gas are produced, and it will cause great disturbance to the rock around the cave, which reduces the self-stabilization ability of the surrounding rock. In addition, the traditional drilling and blasting method mainly relies on manual work during the construction process, and the construction speed is slow and dangerous. Larger, more difficul...

AI Technical Summary

Problems solved by technology

[0002] At present, with the vigorous development of my country's transportation infrastructure, the number of tunnel projects continues to increase, especially in the western mountainous areas where a large number of tunnel projects are planned. The traditional tunnel construction method is relatively complicated. The excavation and blasting mainly uses explosives, which will A large amount of dust and harmful gas are produced, and it will cause great disturbance to the rock around the cave, which reduces the self-stabilization ability of the surrounding rock. In addition, the traditional drilling and blasting method mainly relies on manual work during the construction process, and the construction speed is slow and dangerous. Larger, more difficult to manage in the cave

[0003] With the continuous increase of domestic labor costs and the continuous improvement of the emphasis on personal safety, the traditional drilling and blasting method that relies heavily on manual work can no longer meet the current construction requirements. Therefore, it is very necessary to invent a combination of high-pressure carbon dioxide Mechanized Construction Method for Cracked Mountain Tunnel

Images