High-dipping double-layer ore body stage deep-hole mining method
A technology of steep incline and mining method, applied in surface mining, mining equipment, underground mining and other directions, can solve the problems of ineffective full utilization of cutting projects, difficult layout of mining and cutting projects, and inability to effectively remove stones, etc. The effect of good ventilation, large blasting volume at one time and large production capacity
A technology of steep incline and mining method, applied in surface mining, mining equipment, underground mining and other directions, can solve the problems of ineffective full utilization of cutting projects, difficult layout of mining and cutting projects, and inability to effectively remove stones, etc. The effect of good ventilation, large blasting volume at one time and large production capacity
CN110388209AActive Publication Date: 2019-10-29CHINA MINMETALS CHANGSHA MINING RES INST
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[0030] The technical solutions of the various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, 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 creative efforts fall within the protection scope of the present invention.
[0031] A deep-hole mining method in a steeply inclined double-layer ore body stage, which comprises the following steps:
[0032] Step a. Mining the lower layer ore body 1 first, and then mining the upper layer ore body 3 . The stope of the lower ore body 1 is arranged vertically to the ore body trend, and is divided into mine room and ore pillar for mining in two steps. The stope is arranged along the strike of the ore body, and is also divided into a mine room and a pillar for mining i...
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Abstract
The invention discloses a high-dipping double-layer ore body stage deep-hole mining method, which is especially suitable for recovery of a high-dipping double-layer ore body, wherein the ore rock is stable, the thickness of the lower layer of ore body is more than or equal to 15 m and the thickness of the upper layer of ore body is more than or equal to 8 m. The lower layer of ore body is mined and then the upper layer of ore body is mined, a lower layer of ore body stope is arranged vertical to the direction of the ore body, an ore room and an ore column are recovered in two steps, an upper layer of ore body stope is arranged vertical to the direction of the ore body, and an ore room and an or column are recovered in two steps. Recovery of the upper layer of ore body and the lower layer of ore body is as follows: stage large-diameter deep-hole blasting ore break down is adopted, the ore room is mined, then the ore column is mined, the bottom of 6 to 10 m and the top of 4 to 6 m of a dead zone are filled with high-strength cemented filling bodies after recovery of the ore room and the ore column, the other dead zones of the ore room are filled with the cemented filling bodies, andthe other dead zones of the ore column are filled with low-strength cemented filling bodies or non-cemented filling bodies. The high-dipping double-layer ore body stage deep-hole mining method has theadvantages of high operation safety, small stope preparation cutting engineering quantity, short stope preparation time, high stope production capacity, high efficiency and the like.
Description
technical field [0001] The invention belongs to the field of underground mining, and in particular relates to a steeply inclined double-layer ore body stage deep-hole mining method, which is especially suitable for steeply inclined double-layer ore bodies with stable ore rocks, a lower layer ore body thickness ≥ 15m, and an upper layer ore body thickness ≥ 8m of recovery. Background technique [0002] The occurrence conditions of non-coal mines, especially non-ferrous metal mines, are ever-changing, and they are often produced in layers, with interlayered stone layers in the middle, especially steeply inclined double-layer ore bodies. accounted for a considerable proportion. [0003] When the distance between the upper and lower layers of ore bodies is relatively long, that is, when the thickness of interlayer rocks is large, the difficulty of mining is relatively small. At this time, the upper and lower layers of ore bodies can be regarded as two independent ore bodies tha...
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Patent Timeline
29 Oct 2019
Publication
CN110388209A
- IPC
- E21C41/22; E21F15/00
- CPC
- E21C41/22; E21F15/005
- Inventors
- 周礼; 林卫星