Shaft sinking water disaster prevention and control method

A wellbore and well water technology, applied in wellbore lining, drainage, earth-moving drilling, etc., can solve problems such as difficult construction, and achieve the effect of good effect, strong operability and simple principle

Pending Publication Date: 2022-06-17
HUATING COAL GRP
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Problems solved by technology

Chinese patent CN109026010B: A mine seepage well grouting type sinking construction method, which discloses a method of using aquifer relay release to control shaft water damage. Thi

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  • Shaft sinking water disaster prevention and control method
  • Shaft sinking water disaster prevention and control method

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] like Figure 1-2 As shown, a method for preventing and controlling water hazard in wellbore sinking comprises the following steps:

[0027] S1. Before the wellbore is excavated to the water-bearing strata in the bottom section of the well, tunnel to the design position at the bottom of the wellbore through the roadway that has been constructed in the well, and construct the annular roadway 1, the annular roadway at the periphe...

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Abstract

The invention discloses a shaft sinking water disaster prevention and control method. The specific subsidy mainly comprises the steps of well bottom surrounding roadway tunneling, water inflow prediction, well bottom temporary drainage system construction, underground upward vertical drainage hole drilling, underground drainage, tunneling of a shaft penetrating through a water-bearing layer, drainage hole closing and well bottom surrounding roadway filling. And in the shaft sinking process, the underground drainage holes can effectively drain the water in the aquifer in advance, dry well drilling is achieved, and it is guaranteed that no water disaster accident occurs in the shaft sinking process.

Description

technical field [0001] The invention relates to the field of underground safety in coal mines, in particular to a method for preventing and controlling water hazards in wellbore sinking. Background technique [0002] The wellbore is called the throat of the mine, and it is the passage for the mine workers and equipment to enter and exit the well and for ventilation of the mine. At present, the main wellbore construction methods include common method, freezing method, caisson method, and drilling method. For the wellbore that needs to pass through the water-bearing rock layer, such as the common method of drilling, the grouting method or the dredging method is often used to pre-treat the wellbore water damage. The grouting method will take up a lot of wellbore sinking time, and the grouting cost is high for some special formations with rich water and weak permeability, and the grouting effect is often unsatisfactory. The ground dredging is mainly to drill a number of dredgi...

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Application Information

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IPC IPC(8): E21F16/00E21D5/04
CPCE21F16/00E21D5/04
Inventor 惠金卫马小卫王言龙李承东魏刚党满赵辉佐明明裴满强黄付军何继龙刘志强钱自卫
Owner HUATING COAL GRP
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