Sublevel fill-mining method

A technology of backfill mining and sub-caving method, which is applied in the fields of backfill, ground mining, mining equipment, etc., can solve the problems of high cost, unsatisfactory effect and low filling efficiency of cemented filling, and achieves low cost, good ventilation conditions, The effect of low filling costs

Inactive Publication Date: 2010-06-16
HEBEI HAN XING INST OF MINE & METALLURGY DESIGN
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  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the cost of cemented filling is high, but the effect is not ideal
[0005] Dry filling is a primitive filling method, which is considered labor-intensive, low filling efficiency and poor quality
Therefore, the dry filling method is being abandoned by people

Method used

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings. like Figure 1~5 As shown, a subsection filling mining method includes the following steps:

[0036] A. Ore body division and route layout

[0037]According to the height that the current medium and deep hole rock drilling equipment can adapt to and the exposure area, exposure space and exposure time allowed by the ore rock, refer to the method of dividing the ore body by the segmental caving method without pillars. At the same subsection height as the method, horizontal roadways are arranged along the ore body strike or vertical ore body strike; adjacent subsection roadways are arranged in a staggered manner; the proposed mining body 4 of each roadway is a rhomboid; each proposed mining rhomboid The shaped ore body involves two subsections, three levels, and four approaches; the roadway under the prismatic ore body to be mined is the mining approach 3, and the level a...

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Abstract

The invention discloses a sublevel fill-mining method. By utilizing the natural angle of repose characteristics of caving ores and dry mine fill and according to medium hole drilling device-adapted height and the ore-permitted exposed area, space and time at present, sublevel mining is carried out from the bottom to the top in the open-field state and the dry mine fill is adopted for filling in time. The sublevel fill-mining method has the advantages of an open-field method and a dry fill and sublevel caving method without sill pillar, thereby forming a novel sublevel dry fill-mining method without sill pillar, and is particularly applied to ore mines with large-scale ore body and high yield requirement. The top filling of a filling body is realized by the self-weight of the filling body; a vibratory roller or a device special for underground tamping is adopted to apply pressure to the filling body through a lane top plate to tamp the filling body in a vibration mode, so that the filling body generates a certain bearing force to the above ore body or the rock mass. The sublevel fill-mining method is a mining method which has the advantages of safety, high efficiency, high mining capacity, low loss and dilution, and low production cost.

Description

technical field [0001] The invention relates to the design of an underground mining scheme, in particular to a segmented filling mining method. Background technique [0002] Pillarless segmental caving method is the most widely used mining method in underground mines at present. Compared with other mining methods, this method has the advantages of simple structure, high flexibility, no need to keep ore pillars, small mining workload, simple mining process, and convenient use of efficient self-drilling and loading equipment, rock drilling, ore collapse and mining. The work such as mining is carried out in the mining roadway, which has outstanding advantages such as good safety conditions, high labor productivity, and large capacity. However, the non-pillar segmental caving method also has serious disadvantages such as ore drawing under overburden rock, high loss rate and dilution rate, strict ore drawing management, operation in a single-headed roadway, and poor ventilation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00
Inventor 苗刚
Owner HEBEI HAN XING INST OF MINE & METALLURGY DESIGN
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