Collaborative mining method with under-pressure mining function

Abstract

The invention provides a collaborative mining method with an under-pressure mining function. According to the collaborative mining method, rock positioned between ore bodies and a water body serves asa water-resisting layer; a subsequent filling mining method is adopted for the ore bodies; a segmented medium-deep-hole rock drilling method or a large-hole-diameter deep-hole rock drilling method isadopted for the medium- and larger-thickness ore bodies; a staged bottom structure is adopted for ore drawing; according to the mining engineering arrangement form, ore rooms on an ore drawing levelare arranged along the strike and equipped with vein-piercing roadways; the ore bodies are arranged above the ore drawing level; a rock drilling level and a blasting level are arranged above the ore bodies; vein-piercing transportation roadways are arranged below the ore drawing level; the vein-piercing roadways and the vein-piercing transportation roadways are parallel; a plurality of ore chutesare arranged according to the thicknesses of the ore bodies, used for communicating the vein-piercing roadways with the vein-piercing transportation roadways, and distributed on the vein-piercing roadways; and after the implementation of blasting on the blasting level above the ore bodies; ores fall onto the ore drawing level below the blasting level, are drawn to the ore chutes, and then fall onto the vein-piercing transportation roadways below a stope for being drawn.

Description

technical field [0001] The invention relates to a cooperative mining method capable of mining under pressure. Background technique [0002] At present, the roof karst aquifer of the ore body has the characteristics of large thickness, well-developed karst caves, high mud-sand filling rate, developed water-conducting faults, and abundant static water storage; It is very easy to produce sudden water inflow and underground debris flow during roadway development, mining engineering and subsequent mining, which poses a threat to underground infrastructure and production safety; and because iron ore bodies are stored in water-rich strata, water avoidance is the main method. Feasibility; while the curtain grouting on the side of the underground ore body is too large in engineering volume, and there is a certain risk of water inrush, so it is not suitable for use. [0003] Therefore, the traditional dewatering method is currently adopted, which requires dewatering one stage in adva...

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Problems solved by technology

[0004] However, there are also the following problems: the water level in the strong karst area drops significantly below the middle section of the mine, and the water inflow in the mine pit will also increase significantly. In this way, not only a large number of drainage projects need to be invested, but also affected by the slow decline in the water level, the production will also lag behind. It will take several years to reach the mining conditions; in addition, the increase in drainage will also require a large amount of funds in the early stage for drainage projects, which will significantly affect the economic benefits of the mine

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