Two-step nested combined filling mining method in reserved retaining wall mine
A filling mining method and wall protection mine technology, applied in the direction of filling, ground mining, mining equipment, etc., can solve problems such as dilution and ore loss, and achieve the goal of ensuring mining strength, reducing ore loss and dilution, and reducing exposure time Effect
Active Publication Date: 2018-08-14
湖北三鑫金铜股份有限公司
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[0005] The object of the present invention is to provide a kind of two-step nested combined filling mining method for reserved retaining wall mine to solve the problem in the prior art that the segmented rock drilling stage empty field and subsequent filling method are used when mining an ore body with unstable surrounding rocks. Larger technical problems with loss and depletion
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[0049] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention provides a protective wall mining-reserved two-step nested combination filling mining method, relating to the technical field of mining underground mines and designed to solve the technical problems that the loss and depletion of ores are large when an ore body with unstable surrounding rocks is explored by adopting a rock drilling stage open stope afterwards filling method. The method comprises the following steps: dividing the ore body into a first-step stope and a second-step stope, and performing accurate mining and cutting of the ore body; backstopping the first-step stope and reserving a protective wall mine to construct the backstopping environment of the second-step stope, performing subsequent cemented filling after backstopping the first-step mine; backstopping the second-step stope and the protective wall mine and respectively filling. The protective wall mine is reserved to construct the environment of the second-step stope, and then the backstopping cross heading of the second-step stope is reasonably distributed to backstope the protective wall mine, so that the exposure time of the unstable surrounding ore can be shortened, not only can the reasonable backstopping strength be guaranteed, but also the near surrounding ores can be sufficiently recovered, and the loss and depletion of ores can be reduced.
Description
technical field [0001] The invention relates to the technical field of underground mine mining, in particular to a two-step nested combined filling mining method for reserved wall protection mines. Background technique [0002] For the efficient and large-scale intensified mining of high-value, poor surrounding rock stability conditions, medium-thick to thick and above-medium stable deposits in the "three-down" and scenic spots, the segmented rock drilling stage and subsequent filling method is a good method. A more suitable mining method. [0003] The segmented rock drilling stage is based on dividing the ore body into stages, and then divides the stages into segments. Along the direction of the ore body, it is divided into strip ore rooms and ore pillars. Post-mining pillars and gobs are processed at the same time. [0004] The stability of ore and surrounding rock and the adaptability to the inclination angle of the ore body are stronger than that of the stage open fiel...
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IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00E21F15/005
Inventor 帅金山李向东刘成平盛佳朱志彬周益龙孙德胜佘昌亚万兵院雷李强胡勇李永辉李龙
Owner 湖北三鑫金铜股份有限公司