A longwall strip solid potassium salt mining method

Abstract

The invention belongs to the technical field of mining of solid potassium salt and provides a long-wall strip mining method for solid potassium salt in order to solve technical problems of high equipment transferring frequency, mismatching in transporting capability of rear matching transporting equipment with mining capability of a continuous mining machine and poor ventilation conditions. The method includes roadway layout, mining equipment arrangement and installation and room mining. A distance between an air return roadway and a main transporting roadway is larger than 1000m, rooms are arranged between the air return roadway and the main transporting roadway, and lengths of the rooms and jambs are larger than 1000m. During room mining, a fully-mechanized excavator is adopted for excavating cut holes of the rooms to form a complete negative-pressure ventilation system, then the continuous mining machine is adopted for stoping of the rooms with the excavated cut holes, and after the room stoping width reaches a designed width, the continuous mining machine retreats to start stoping of the next room. Mining efficiency of the continuous mining machine is given into full play, transferring frequency of mining face equipment is reduced, and negative-pressure ventilation in mining face stoping is realized to improve a ventilation environment.

Description

technical field [0001] The invention belongs to the technical field of solid potash ore mining, and in particular relates to a long-wall strip solid potash mining method. Background technique [0002] my country is a large agricultural country and the country with the largest consumption of potassium resources in the world. There is a shortage of potassium resources in my country, and half of potassium fertilizers need to be imported every year. In order to solve the shortage of potassium resources, some domestic potash fertilizer manufacturers have developed overseas solid potassium salt resources with the strong support of the government. [0003] Due to the lack of solid potassium salt deposits in China, the research and understanding of solid potassium salt mining technology is basically blank. In the solid potassium salt mining projects that have been put into production overseas, domestic enterprises have taken many detours in the mining process due to the lack of rel...

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Problems solved by technology

[0004] The present invention provides a long-wall strip solid potassium solution to solve the technical problems of frequent equipment relocation and inversion in the mining process of solid potassium salt, mismatch between the transportation capacity of the supporting transport equipment and the mining capacity of the continuous mining machine, and poor ventilation conditions. salt mining method

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