Method for exploiting gently-inclined thin-to-medium-thickness ore bodies

Abstract

The invention relates to a method for exploiting gently-inclined thin-to-medium-thickness ore bodies. A room-and-pillar mining process of the method includes steps of setting panels; carrying out preparation cutting; carrying out room stoping; carrying out pillar stoping. The method has the advantages that quick rock roadway excavation mechanical matched operating lines are introduced into room and pillar stoping work, accordingly, mechanical operation can be carried out, and the traditional backward technologies for drilling fan-shaped medium-deep holes by the aid of room-and-pillar processesand removing ore by the aid of electric rakes can be transformed; the shortcoming of limit due to the traditional pipeline filling can be overcome by the aid of throwing filling techniques, the method is convenient and flexible, and the problem of contradiction between recycling of pillar resources of the traditional room-and-pillar mining processes and maintenance of the goaf stability can be appropriately solved by the aid of the method.

Description

technical field [0001] The invention relates to a mining method for a gently inclined thin to medium-thick ore body. Background technique [0002] The room-and-pillar mining method (Room-and-pillar mining) is often used for mining horizontal or gently inclined thin to medium-thick ore bodies. In the ore block or mining area, the mine rooms and pillars are arranged alternately, and the mining rooms are left continuously or intermittently. regular pillars to maintain roof rock. In my country, the room-and-pillar mining method is mainly used for mining horizontal to gently inclined thin ore bodies (thickness less than 2.5-3m) where the ore and surrounding rock are stable; in western countries, using modern equipment, the room-and-pillar mining method can also mine thick and For extremely thick ore bodies, this method is most widely used in the United States, and its output accounts for 60% of the total mining volume of large and medium-sized non-coal mines. The advantage of th...

AI Technical Summary

Problems solved by technology

The advantage of the room-and-pillar mining method is that the mining workload is small, the mining intensity is high, the labor productivity is high, the mining cost is low, and the ore dilution rate is small; Solving the contradiction between pillar resource recovery and maintaining goaf stability in room-and-pillar mining is the main direction for improving mining methods for horizontal or gently inclined thin to medium-thick ore bodies.

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