Underground mining method for gently-inclined medium-thick or thick phosphorus ore bodies
A technology with a gentle slope and medium thickness and mining methods, which is applied in underground mining, ground mining, mining equipment, etc., and can solve problems such as natural caving of upper layered ore bodies, destruction of upper layered production arrangements, and low strength of phosphate ore bodies , to achieve the effect of reducing the exposed area, improving safety and improving recovery rate
Active Publication Date: 2019-08-20
贵州开磷有限责任公司
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[0002] The mining method of gently inclined medium-thick and thick ore bodies has always been an international mining problem, and the strength of the phosphate ore body itself is not high. When the thickness of the phosphate ore body becomes thicker, the stratified ore body will cause natural caving during the mining process. The production layout of the upper layer is severely damaged, and the traditional roof drilling roadway mining requires high technical requirements for rock drilling equipment and workers, and the loss of the triangular ore on the floor cannot be effectively controlled
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Embodiment 2
[0031] Embodiment 2 Application example of the present invention
[0032] Take the mining of the N5# ore house at the 490 layer in the south fourth panel area of the 480 middle section of the Shaba soil mine of Guizhou Kailin Group as an example: the ore body dip angle of the mine house is 30-32°, and the ore body thickness is 10-15m, which is a typical gently inclined thickness. The ore body has a geological reserve of 15,985 tons. Before mining, two rock-drilling roadways will be constructed. When mining, the bottom part of the ore body will be mined first, and then the roof part of the ore body will be mined.
[0033] Its mining steps include:
[0034] (1) First, divide the middle section along the ore body tendency, with a height of 100m, and divide the panel along the ore body trend, with a panel length of 600m; divide a layer every 10m along the inclination in the panel; divide a mining area every 20m along the strike in the layer In the stope, a rock-drilling roadway...
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The invention relates to the technical field of mining, and particularly relates to an underground mining method for gently-inclined medium-thick or thick phosphorus ore bodies. The underground miningmethod for the gently-inclined medium-thick or thick phosphorus ore bodies comprises the following steps: dividing a middle section in the inclination direction of the ore bodies, dividing a panel inthe orientation direction of the ore bodies, and dividing a sub-layer in the panel in the inclination direction; dividing a stope in the sub-layer in the orientation direction; constructing a drilling roadway in the stope in a roof direction; and then constructing two drilling roadways along a bottom plate of the ore bodies. According to the underground mining method for the gently-inclined medium-thick or thick phosphorus ore bodies, the original thick ore bodies are divided into two parts during extraction, so that the roof exposure area of the stope is reduced, the working time of personnel and equipment in an open stope is reduced, and the safety of the personnel and equipment in an extraction process is greatly improved; and meanwhile, triangular ores on the bottom plate can be efficiently recovered, so that the recovery rate for the ores is greatly increased.
Description
technical field [0001] The invention relates to the technical field of mining, in particular to an underground mining method for gently inclined medium-thick or thick phosphate ore bodies. Background technique [0002] The mining method of gently inclined medium-thick and thick ore bodies has always been an international mining problem, and the strength of the phosphate ore body itself is not high. When the thickness of the phosphate ore body becomes thicker, the stratified ore body will cause natural caving during the mining process. The production layout of the upper stratum is severely damaged. At the same time, the traditional roof drilling roadway mining requires high technical requirements for rock drilling equipment and workers, and the loss of triangular ore in the floor part cannot be effectively controlled. Contents of the invention [0003] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides an under...
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IPC IPC(8): E21C41/22E21F15/04E21F15/06
CPCE21C41/22E21F15/005E21F15/04E21F15/06
Inventor 张涵黄勇王停沈海亮陈汉廷陈鑫陈小军况云乾蒲思雄
Owner 贵州开磷有限责任公司
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