Sublevel stripe tail salt stoping dry-type filling-mining method

Abstract

The invention discloses a sublevel stripe tail salt stoping dry-type filling mining method, which is characterized in that the ore body is divided into a plurality of panels along the run of the ore body, and panel jambs are uniformly arranged around the panels; each panel is divided into a plurality of sublevels according to the thickness of the ore body; each sublevel is divided into a plurality of slices according to the thickness of the ore body; the stoping sequence is upward slice stoping; the same slice adopts bringing-back stoping; a tunneling machine is adopted to cut the caved ore; a trackless scraper is used for ore removal; access stoping is adopted in each mining room; the tailings in a processing factory is used for filling after each access stoping in one mining room is finished; and the upper slice stripping, stoping and filling procedures are carried out by taking a filling body as a bottom plate after the slice stoping is completely finished. The sublevel stripe tailsalt stoping dry-type filling mining method of the invention reasonably utilizes resources, protects the mining environment, also improves the production capacity, and lowers the production cost to some extent.

Description

technical field [0001] The invention relates to a mining method, in particular to a segmented strip back mining tail salt dry filling mining method. Background technique [0002] In the prior art, the dissolution method is mainly used for mining underground potash ore body salt mines. It is mainly divided into chamber water-soluble method and drilling water-soluble method. This method is to install a pipeline in the borehole, communicate with the underground ore body, inject fresh water into the ground through the water injection pipe, erode the ore body, and create an artificial cavity sufficient to accommodate the dissolved salt solution, and pass the obtained solution through the pipeline. It is pumped to the ground, then concentrated by artificial or natural evaporation, crystallized to separate the product. The resulting mother liquor is adjusted by adding water and then returned to the ground for repeated use. [0003] The disadvantages of the above method are: [...

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Problems solved by technology

[0004]1. The upsolution rate cannot be controlled, and the drilling service life is short

[0005]2. The natural dissolution method is adopted, which makes the dissolution time longer, thereby prolonging the entire mining period and increasing the mining cost, and the mined in the natural dissolution stage brine unsaturated

[0006]3. The brine after dissolving the ore needs to evaporate and consume a lot of energy, the product cost is high, and the tail water produced will cause pollution

[0007]4. The shape of the dissolved cavity formed after the natural dissolution is irregular, so that the dissolved cavity formed by the upper solution is also irregular, and it is easy to cause local collapse and damage during mining. surface vegetation, which poses significant safety and environmental protection issues

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