Vertical shaft soft rock special drill construction technique

Abstract

The invention claims a sub-vertical soft rock drilling construction technology, the technology steps as follows: (1), descend the FJD umbrella shaped boring frame, (2), install compressed air pipeline after descending the FJD umbrella shaped boring frame, sending the compressed air to the compressed air distributing device on the FJD umbrella shaped boring frame and a cylinder of the pneumatic supporting arm of the FJD umbrella shaped boring frame,(3),open the control valve of the pneumatic supporting arm, strut the FJD umbrella shaped boring frame, (4) install the TMY6 type diving drill on each umbrella rod of the FJD umbrella shaped boring frame through the vertically set drill fixing rack, (5) install the drill rod, the drill bit and the reamer, (6) open the control valve of the TMY6 type diving drill, start the TMY6 type diving drill, (7) open the control valve of the rising and falling cylinder, and the rising and falling cylinder drives the drill to move downwards, (8), lastly reverse the control valve of the rising and falling cylinder to make the rising and falling cylinder drive the drill to move upwards, to take out the drill from the drill hole, and finish drilling. Compared with the impact drilling manner, the drilling efficiency of the technology is improved over 25%.

Description

technical field [0001] The invention relates to a drilling construction technology, which is a drilling technology applied to rock drilling in shaft construction, and is especially suitable for drilling and blasting in weak rock formations of shafts or sandstone with poor cementation and high hardness. technical background [0002] At present, rock drilling rigs are used in the construction of mines in the central and eastern regions of my country with better rock formation conditions. The impact of the drilling rig's drilling tools will impact the rock into powder, and the rock powder will be blown out of the drill hole by the power of compressed air and water. Due to the large amount of coal mining in the central and eastern regions, the coal resources in some mining areas are gradually exhausted. In order to adapt to the central and western development strategy of my country's coal industry, some coal enterprises have gradually moved to the western region. The strata in t...

AI Technical Summary

Problems solved by technology

The formations in the western region are mostly continental sedimentary formations, and the rock formations are mostly sandstone, conglomerate or sandy mudstone. The rocks are brittle and brittle. It is difficult to impact the rocks into powder with ordinary impact rock drilling tools, and the impact of the drilling tools is easy. Make the sandstone, conglomerate or sandy mudstone at the bottom of the hole more solid and compact. The drilling speed is very slow. It takes 40-60 minutes to drill a 4m deep hole.

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