Drainage method for groundwater in construction of deviated well

Abstract

The invention relates to a drainage method for groundwater in construction of a deviated well, which belongs to the technical field of mining. The method is characterized by comprising the following implementation steps of: (1) finding places with fissure development in a range of 50 to 150 meter away from a working surface when the vertical depth for the deviated well reaches over 200 meters, and punching drain holes at a fissure opening in an uptilting way; (2) arranging a water diversion pipe which can make water flow into a water drain sump at the hole opening of each drain hole; (3) forming the water drain sump in the downstream of the bottom of the deviated well; (4) arranging a submersible pump in the water drain sump; (5) arranging a water drain pipe which drains water in the water drain sump onto the ground in the deviated well; and (6) forming a transverse water diversion slot which can stop water flow at the bottom and makes the water flow into the water drain sump at the bottom of the deviated well on the water drain sump. The drainage method has the advantages that: the construction is simple and the progress of a well digging project is not influenced.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a groundwater drainage method in inclined shaft construction. Background technique [0002] It is often necessary to drill inclined shafts in the mining of mines. In the construction of inclined shafts, there are often two problems that directly affect the progress of the project. One is the geological stability of the surrounding rock, and the other is underground fissure water. Generally speaking, when the inclined shaft is excavated to a vertical depth of less than 200 meters, the working face is getting deeper and deeper from the ground, the surrounding rock is getting less and less elegant, and the stability of the rock is getting better and better. When running into underground fissure water gushes, the engineering cannot be excavated, and sometimes the well will be flooded. At present, most of the methods adopted at home and abroad are to take steps such as dri...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that although the cracks can be blocked, the grouting process is very complicated, time-consuming, expensive, and affects the progress of the project

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