Safety high-efficiency exploitation technology for sharply inclined ore body
A technology of steep inclination and ore body, applied in ground mining, earth square drilling, underground mining, etc., can solve problems such as economic loss, environmental pollution, waste of mineral resources, economic loss, etc., achieve large ore loss and dilution, and improve ore recovery The effect of reducing the rate and mining cost
Inactive Publication Date: 2018-12-28
NANHUA UNIV
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Problems solved by technology
The loss of ore will lead to the waste of mineral resources and huge economic losses. The ore will be depleted due to the mining of waste rocks, which may even cause environmental pollution and destruction, and will cause economic losses caused by the disposal of waste rocks.
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Embodiment 1
[0031] This embodiment provides a safe and efficient mining technology for a steeply inclined ore body, so as to solve the problems existing in the prior art.
[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0033] Such as Figure 2 to Figure 5 As shown, the present invention provides a safe and efficient mining technology for steeply inclined ore bodies, wherein figure 2 It mainly reflects the mining state in the stage of blasting with blast holes set up, the mining of the upper section stope 201 has been completed, and the overburden waste rock 204 is left inside the mined upper section stope 201;
[0034] Firstly, before mining, it is necessary to arrange a mining route 210 at the footwall of the ore body 203, and complete mining operations such as rock drilling, blasting...
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The invention discloses a safety high-efficiency exploitation technology for a sharply inclined ore body. A mining technology comprises the steps of: arranging mining entrances in a rhombus shape, andcompleting rock drilling, blasting and ore removal in the mining entrances; in the blasting process, by controlling blasting parameters of mining blast holes, reserving triangular integrated separation ore plates at semi-surrounded shaped edge parts of the mining entrances of an upper segment stope and on the boundary of the upper segment stope; in the process of mining ores, recovering the separation ore plates at an interval of two steps; and in the initial stage of current step ore drawing, reserving and not recovering the separation ore plates at first two step positions, and until the current step ore drawing is ended, recovering the reserved separation ore plates in the current step due to self-falling or forced caving of the separation ore plates. By adopting the safety high-efficiency exploitation technology for the thick and large sharply inclined ore body, which is provided by the invention, ore dilution is reduced, the ore recovery rate is improved, and ore resources can bedeveloped and utilized to the greatest extent.
Description
technical field [0001] The invention relates to the field of mining technology, in particular to a safe and efficient mining technology for thick, steeply inclined ore bodies. Background technique [0002] Underground mining methods mainly include three basic processes of mining, cutting and back mining, and can usually be divided into three categories: open-field mining, filling mining and caving mining. The caving mining method has the advantages of simple process, high production efficiency, good safety performance and low cost, and has been widely used in underground mines, especially large and medium-sized underground mines. However, one of the characteristics of the caving mining method is to rely on caving surrounding rocks to fill the goaf and release the ground pressure to control and manage the ground pressure. The caving ore and waste rock are in direct contact with each other during the mining process. Obviously, if the ore drawing under the overlying rock is no...
Claims
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IPC IPC(8): E21C41/22F42D3/04
CPCE21C41/22F42D3/04
Inventor陶干强鲁明星张秀凤刘永进贾庆庆朱忠华
OwnerNANHUA UNIV