Medium-length hole mining method in multiple blasting free faces of high dipping thin veins

A thin ore vein and steeply inclined technology, which is applied in the mining of inclined to steeply inclined thin ore bodies, and in the field of medium and deep hole mining methods with multiple blasting free faces of steeply inclined and thin ore veins, to achieve the effect of high operating safety

Inactive Publication Date: 2012-08-15
CENT SOUTH UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: Aiming at the deficiencies in the mining of thin ore bodies using the upward layered filling mining method or the ore retention method, a new mining method with good mining safety, low r

Method used

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  • Medium-length hole mining method in multiple blasting free faces of high dipping thin veins
  • Medium-length hole mining method in multiple blasting free faces of high dipping thin veins
  • Medium-length hole mining method in multiple blasting free faces of high dipping thin veins

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specific Embodiment 1

[0032] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 , the steps of the deep hole mining method in the steeply inclined thin vein multi-blasting free surface are as follows:

[0033] ①Arrange the ore blocks along the direction of the ore body 10, divide the ore body 10 into middle sections and sections in terms of vertical height, the ore blocks are 80m long and 50m high, and the ore blocks are divided into multiple sections with a section height of 18m. The design adopts a flat-bottomed structure, and the tunnel 7 is excavated from the middle section of the lower plate vein at the bottom of the ore block to the ore body 10, and the bottom rock-drilling tunnel 9 is dug inside the ore body 10, and a tunnel is arranged every 8m as the bottom of the mine house Out of mine side alley 6. The cutting patio 1 is arranged on one side of the mine house; the pedestrian equipment shaft 5 is arranged on the other side. The sectioned rock drilling level r...

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Abstract

The invention discloses a medium-length hole mining method in multiple blasting free faces of high dipping thin veins. The medium-length hole mining method is characterized by comprising the steps of: arranging ore blocks along the trend of a core body, dividing the ore body into a medium section and a segment in the altitude; drilling a gate way in the segment and arranging in veins along the ore body; arranging a flat ore removal structure on the bottom along the veins; arranging a cutting raise from one ends of the ore blocks, arranging a manway at the other ends of the ore blocks; and upwards and downwards punching forwards leaning medium-length holes, with the cutting raise as free faces, and blasting caved ores in the segment by multiple free faces, and withdrawing the ore centrally at the bottom. The medium-length hole mining method has the remarkable characteristics of high mining safety, little resource dilution rate, good production continuity, high level of mechanization, low cost, high efficiency, low labor intensity and the like.

Description

technical field [0001] The present invention relates to a mining method, in particular to a medium-deep hole mining method with steeply inclined thin veins and multiple blasting free surfaces. Inclined to steeply inclined thin ore body mining. Background technique [0002] The steeply inclined thin ore body is usually mined by the upward layered filling mining method or the ore retention method. When using the layered filling mining method, due to the thin ore body, many operating cycles and complex mining technology, there are disadvantages such as large mining ratio, low production efficiency, high labor intensity, high mining cost, and small mine production capacity; If the mine is mined with the method of retaining ore, the surrounding rock of the upper and lower walls of the stope will be exposed for a long time, the exposed area of ​​the stope will be large, the operation will be unsafe, the mining will be difficult, the ore loss and dilution rate of the stope will be...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21C41/22
Inventor 赵国彦李夕兵李启月刘志祥王世鸣
Owner CENT SOUTH UNIV
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