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Technical method for controlling water in kilometer-level internal shaft in metal mine

A blind shaft, water prevention technology, applied in shaft equipment, drainage, mining equipment and other directions, can solve problems such as flooding and large water inflow, and achieve the effect of improving stability and reducing bump damage

Active Publication Date: 2019-04-02
BEIJING CHINA COAL MINE ENG CO LTD
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Problems solved by technology

[0002] In metal mines with abundant groundwater, during the construction of blind inclined shaft shafts in metal mines, the probability of encountering karst caves, large fissures, fault fracture zones, and fine cracks and pores in the strata passing through the blind inclined shaft shaft is relatively high, and the water inflow is relatively large. Once there is a sudden water gushing, when the water gushing volume is greater than the drainage capacity of the pump, it will cause a well flooding accident

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  • Technical method for controlling water in kilometer-level internal shaft in metal mine
  • Technical method for controlling water in kilometer-level internal shaft in metal mine
  • Technical method for controlling water in kilometer-level internal shaft in metal mine

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Embodiment Construction

[0013] Yiliang Chihong Mining Co., Ltd. Maoping Lead-Zinc Mining Co., Ltd. has the lowest elevation of underground mineral mining in the middle section of 610 meters. At present, it has been proven that there are still abundant mineral deposits below the middle section of 610 meters. It is a continuous replacement project for deep resources aimed at developing deep mineral deposits. It is the focus of the company's strategic development plan, and the 112-line blind shaft shaft of the supporting construction of the deep resource replacement project is the top priority of the project.

[0014] Yiliang Chihong Mining Co., Ltd. Maoping Lead-Zinc Mine plans to build the 112-line vertical shaft using a circular blind mixed shaft with a shaft diameter of 5.7m and an excavation diameter of 6.5m. The wellhead is located in the existing 910m horizontal roadway, the designed wellbore depth is 960m, and the elevation is from 910m to -50m. The shaft will serve as the main channel for the t...

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Abstract

The invention discloses a technical method for controlling water in a kilometer-level internal shaft in a metal mine. The technical method comprises the steps of (A) grouting hole drilling and (B) grouting hole grouting. A feasibility test is carried out on a 112-line internal-shaft shaft pre-grouting project in MaoPing lead zinc mine of the YiLiang ChiHong Mining Limited Company on December 30, 2016, and the feasibility test is completed on September 14, 2017 and lasted 258 days. During the grouting hole drilling grouting construction process, the preparation work of a metal rock internal-inclined-shaft shaft is not delayed by adopting the technical method for controlling the water in the kilometer-level internal shaft in the metal mine, and since a drilling chamber is arranged at the position 14m away from an internal inclined shaft, the preparation work of the metal rock internal-inclined-shaft shaft is not affected, so that the grouting hole drilling grouting construction and the preparation work of the metal rock internal-inclined-shaft shaft are carried out at the same time.

Description

technical field [0001] The invention relates to the technical field of drilling construction. Specifically, it is a technical method for preventing and controlling water in kilometer-level blind shafts in metal mines. Background technique [0002] In metal mines with abundant groundwater, during the construction of blind inclined shaft shafts in metal mines, the probability of encountering karst caves, large fissures, fault fracture zones, and fine cracks and pores in the strata passing through the blind inclined shaft shaft is relatively high, and the water inflow is relatively large. Once there is a sudden water gushing, when the water gushing volume is greater than the drainage capacity of the pump, it will cause a well flooding accident. This requires pre-grouting of the stratum surrounding the "blindly inclined shaft shaft of metal mine metal mine", so that the water inflow is less than or equal to the drainage capacity of the water pump, completely avoiding sudden wat...

Claims

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Application Information

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IPC IPC(8): E21F16/00E21D5/04E21D5/00
CPCE21D5/00E21D5/04E21F16/00
Inventor 贺文高晓耕周高明冯旭海田乐刘书杰孙帮涛向俊兴陈振国王桦邵晨霞王勇
Owner BEIJING CHINA COAL MINE ENG CO LTD
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