Open-pit metal mine goaf treatment method

A goaf treatment and goaf technology, which is applied in ground mining, earth drilling, underground mining, etc., can solve problems such as ore dilution, large safety hazards, and excessive thickness of security layers, and achieve the goal of improving effectiveness Effect

Active Publication Date: 2017-07-21
CHINA RAILWAY 19 BUREAU GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. For goafs without mining design data such as private excavation and random mining, the drilling work cannot be accurately positioned, and the drilling work is relatively large and expensive;
[0004] 2. There is no test basis for the safety thickness reserved for open-pit mining in the upper part of the goaf, and the reserved security layer does not consider the influence of mine blasting vibration and different goaf roof shapes on the stability of the goaf;
[0005] 3. The thickness of the reserved security layer in the goaf is too large, which makes the treatment of the goaf unreasonable and difficult to deal with;
[0006] 4. There are problems such as secondary shipment and ore dilution in the goaf of open-pit mines by filling method, and the mining cost increases;
[0007] 5. At present, the mine goaf management and early warning and monitoring technologies are static, but the development and changes of the goaf are dynamic. The existing monitoring platform cannot monitor dynamically at all times, and there are great potential safety hazards

Method used

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  • Open-pit metal mine goaf treatment method
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Embodiment Construction

[0062] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0063] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components.

[0064] A method for treating a goaf in a metal open-pit mine, the steps of which include:

[0065] Step 10, according to the rock mass of the mine, the condition o...

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Abstract

The invention relates to the field of goaf treatment, in particular to an open-pit metal mine goaf treatment method. The open-pit metal mine goaf treatment method comprises the steps that according to the rock mass and mineral deposit conditions of a mine, combining rock mechanical test data, the roof secure layer thickness of a goaf is determined; detection data of the goaf are obtained; a three-dimensional digital model of the mine is built and comprises a mineral deposit solid model, the mutual relation between the goaf and an open-pit bench and the mutual relation between the goaf and a slope; ground pressure monitoring data are obtained; according the roof secure layer thickness of the goaf, the detection data of the goaf, the three-dimensional digital model of the mine and the ground pressure monitoring data, the treatment occasion and scheme of the goaf are determined; and according to the treatment scheme of the goaf and topographic data acquired before explosion and after explosion, a treatment result of the goaf is evaluated through volume balance, and if the evaluation result is within an allowable error range, construction of the open-pit mine can be normally and orderly conducted. By adoption of the open-pit metal mine goaf treatment method, zero accident occurs during open-pit stripping and mining construction near the goaf, the ore recovery ratio is above 96%, and the ore dilution ratio is below 4%.

Description

technical field [0001] The invention relates to the field of goaf treatment, in particular to a treatment method for goafs in metal open-pit mines. Background technique [0002] At present, the method of domestic goaf management in metal open-pit mines is to grasp the location of the goaf through drilling, and then grasp the shape of the goaf through cavity scanning, and finally achieve the goal of treating the goaf through the filling method or the collapse of the surrounding rock of the roof. Purpose. Deficiencies: [0003] 1. For goafs without mining design data such as private excavation and random mining, the drilling work cannot be accurately positioned, and the drilling work is relatively large and expensive; [0004] 2. There is no test basis for the safety thickness reserved for open-pit mining in the upper part of the goaf, and the reserved security layer does not consider the influence of mine blasting vibration and different goaf roof shapes on the stability of...

Claims

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Application Information

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IPC IPC(8): E21C41/32E21B49/00
CPCE21B49/00E21C41/32
Inventor 莫麟
Owner CHINA RAILWAY 19 BUREAU GRP CO LTD
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