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Continuous mining method of stepped sectional extruding and ore caving followed by filling

A step-by-step, mining-method technology, applied in surface mining, underground mining, special mining, etc., can solve the problems of high operating costs, poor safety conditions, and low working face labor productivity

Inactive Publication Date: 2004-02-11
CENT SOUTH UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the problems of poor safety conditions, low labor productivity at the working face, and high operating cost in the layered filling mining method of the gently inclined medium-thick and low-grade ore body, and provide a stope with large production capacity, High operating safety, small ore loss and dilution, and low mining cost. The continuous mining method of step-by-step extrusion and collapse followed by filling

Method used

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  • Continuous mining method of stepped sectional extruding and ore caving followed by filling
  • Continuous mining method of stepped sectional extruding and ore caving followed by filling
  • Continuous mining method of stepped sectional extruding and ore caving followed by filling

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Embodiment Construction

[0020] The present invention will be further elaborated below in conjunction with accompanying drawing:

[0021] ① Divide the ore body into a middle section with a height of 80-90m. The middle section is divided into three small middle sections with a height of 30m. Each small middle section is divided into three sections along the strike with a section height of 10m.

[0022] ② Divide the ore section along the strike. The length of the ore section can be 120m. Each section is arranged at the boundary of the footwall of the orebody along the veins to drill out the ore roadway, and its cross-sectional size can be 4m×3m; Ventilation, filling and roof protection roadways are arranged at the position of the wall, and the roadway can also play a role in exploring the boundary line of the hanging wall of the ore body.

[0023] ③ Use the forward-inclined fan-shaped medium-deep hole for ore falling, use the non-electric conduction detonation millisecond detonator in the same row and t...

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Abstract

In the continuous mining method, ore body are divided into sections, subsections and mini-sections stepwisely along the ore vein; arranging mini-section drilling mine tunnels along the ore vein in the ore body bottom wall and connecting the mini-section tunnels with the main ramp way via linking tunnel; arranging support and filling tunnel along ore vein in the upper wall in the ore section; stoping from two ends to the central part of the bordroom via stepped continuous advance; drilling fanned holes with rock drill machine, breaking ore with rock explosive, charging with charging machine and combined elementary error detonation; filling finished stope via filling tunnel and filling dewatering device; and supporting crushed upper wall roof with deep anchor rod and steel fiber concrete. The present invention has high production capacity, high safety, less ore loss and low mining cost.

Description

technical field [0001] The invention relates to a mining method for underground mining of metal ore deposits, and is mainly applicable to gently inclined medium-thick ore bodies with relatively broken ore bodies, unstable surrounding rocks, low ore value (low grade) and subsidence of the ground surface. Background technique [0002] In order to obtain better economic benefits, mining methods with relatively low mining costs and high production capacity must be adopted when mining metal deposits with a gently inclined medium thickness and above that are not stable, of low value, and the surface does not allow subsidence. For the mining of this type of ore body, the upward layered filling mining method is usually used, and the explosive force transportation is used to segment the open space and then fill the mining method. The layered filling mining method of mining medium-thick ore bodies generally divides the ore body into mine rooms and pillars, and the pillars include inte...

Claims

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Application Information

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IPC IPC(8): E21C41/22
Inventor 李夕兵赵国彦周科平古德生徐国元李启月
Owner CENT SOUTH UNIV
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