A construction method of mine seepage well grouting type sinking

Abstract

The invention discloses a slurry injection type shaft sinking construction method of a seepage well of a mine. During construction, by use of seepage well principle, water of a target water containinglayer is drained to a to-be-injected water containing layer under the well. A water drainage and pressure releasing driller of an underground roadway or a kilometer directional driller is used for carrying out water drainage and pressure releasing on the water containing layer around a shaft, so a water drainage funnel is formed, an annular water interception well is formed and the shaft is capable of using a common borehole blasting method to carry out dry well operation. After the water containing layer is constructed by the well cylinder, a slurry injection pipe in the seepage well is usedfor carrying out slurry injection blocking on the seepage well and the surrounding rock. According to the invention, water inflow quantity can be reduced by use of a shaft sinking method where construction is performed by use a common method. The provided construction method is suitable for construction of quite big shafts where the water inflow in the later period of the mine.

Description

technical field The invention relates to a construction method of a shaft of a mine vertical shaft, in particular to a construction method of a mine seepage well grouting type sinking well. Background technique Engineering design often encounters geological conditions with a large amount of water gushing out of the shaft shaft. Due to the large amount of water gushing out of the shaft shaft, many mines have to adopt drilling methods such as freezing method and grouting method, which require a large investment. Grouting is divided into ground pre-grouting and working face pre-grouting. Since the aquifer in many areas is pore water, grouting can be performed directly during construction, which cannot guarantee the grouting effect, and is prone to grout leakage and run-out. The investment is also large, and the technology is uncontrollable. It is rarely used in the western region, and there are cases of failure. At present, the freezing method is generally used in the wester...

AI Technical Summary

Problems solved by technology

At present, the freezing method is generally used in the western region. The construction technology of the freezing method is controllable, but the investment is huge. In addition, the thickness of the vertical shaft wall support is very...

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