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Downward drift cut-and-fill mining false roof construction method

A technology for filling and false roofing of access roads, which is applied in the direction of fillings, underground chambers, mining equipment, etc. It can solve the problems of poor bearing capacity and short roof control time, and achieve the effect of improving stability and strength

Inactive Publication Date: 2019-04-09
CENT SOUTH UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for constructing a false roof in filling mining with downward approach, so as to solve the problem in the prior art that the roof is constructed horizontally or in a large-angle inverted splayed shape, and its bearing capacity is relatively high. Poor technical problems with short top control time

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  • Downward drift cut-and-fill mining false roof construction method
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  • Downward drift cut-and-fill mining false roof construction method

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0033] In describing the present invention, it is to be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", " The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and "side" are based on the attached figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplify...

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Abstract

The invention provides a downward drift cut-and-fill mining false roof construction method. The method comprises the following steps: ore body components: ore bodies and a drift are arranged in the moving direction; stope preparation and ore body cutting; stoping; false roof construction: after stoping of a stope, residual ore is laid at bottom of the drift immediately, steel bars are laid on theresidual ore to form a steel bar net, steel bars are reserved on the steel bar net, bent, filled with a filling material and connected with a roof, after the reserved steel bars are strengthened afterfilling, lower edges are bent into hooks, and steel bars are connected with reserved steel bars bent into hooks on the upper layer during next layered net laying. The method is mainly applied to orebodies with instable or very stable rock, and the defects that roofs are constructed to be horizontal or in a large-angle inverted V shape, have poorer carrying capacity and shorter roof control timein downward drift cut-and-fill mining in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a method for constructing a false roof for filling and mining in a downward approach. Background technique [0002] The downward approach and filling mining method is suitable for the mining of ore deposits with high ore value, soft ore rocks, and protection of the surface and overlying strata. Due to the softness of the ore rock, in order to ensure safe mining, it is necessary to artificially construct a false roof to bear the load of the upper loose rock mass and filling body. Most of the artificial roof construction methods refer to the design manual or the experience of false roof construction in adjacent mines. It is easy to cause the strength of the false roof to be not high enough, which will affect the safe recovery of resources, and lead to a decrease in mining efficiency. [0003] The patent number is "ZL201721371238.0", and the name is "Artificial False Roof Facilitie...

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Application Information

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IPC IPC(8): E21D19/00E21D11/15E21F15/00
Inventor 罗周全秦亚光马少维文磊董喆喆丁春胜代转
Owner CENT SOUTH UNIV
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