大新锰矿西北地采矿区产状复杂矿体分区协同开采技术研究

复杂难采矿体开采是采矿业亟待解决的一个科技难题。针对产状复杂矿体采用现有技术开采常导致生产效率低、安全性差、劳动生产率高、资源回收率低等突出问题，通过引入工程地质分区思想和“协同 开采”理念，提出了产状复杂矿体分区协同开采技术思路。针对大新锰矿西北地采矿区“U”形产状复杂多层薄矿体尚无成熟的采矿工艺保证安全高效开采的问题，根据产状复杂矿体分区协同开采技术思路，综合分析 了矿体地质赋存条件，并结合矿体三维模型选取了影响矿体开采的走向和倾角作为矿体分区依据，将矿体分为一区、二区和三区，提出了一种工程地质条件引导的矿体分区技术。针对不同分区的开采技术条件，在各 分区进行了采矿方法优选或设计，推荐一区、二区和三区分别采用浅孔留矿法、电耙出矿房柱法和电耙-爆力协同搬运伪倾斜房柱采矿法，形成了一种产状复杂矿体采矿方法优选与设计技术。研究表明：所提方法有 效解决了大新锰矿西北地采产状复杂矿体的开采技术难题，为产状复杂矿体高效协同开采提供了一种新思路。

Study on Zoning Synergetic Mining Technology of the Orebody with Complex Occurrence in the Northwest Mining Area of Daxin Manganese Ore

The mining of complex and difficult orebody is a scientific and technological problem to be solved urgently in mining industry.In view of the prominent problems of low production efficiency，poor safety，high labor productivity and low resource recovery rate caused by the existing mining technology for the orebody with complex occurrence，the technical idea of zoning synergetic mining of the orebody with complex occurrence was put forward by combining the idea of engineering geological zoning with the concept of "synergetic mining".In view of the problem that there is no mature mining technology to ensure the safe and efficient mining of the U-shaped complex multi-layer thin orebody in the northwest mining area of Daxin Manganese Deposit，according to the technical idea of zoning synergetic mining of the orebody with complex occurrence，the geological occurrence conditions of orebody were comprehensively analyzed，and the strike and dip angle that affect the mining of orebody were selected as the basis of orebody zoning in combination with the 3D model of orebody，the orebody was divided into three zones，and a zoning technology of orebody guided by engineering geological conditions was proposed.According to the mining technical conditions in different zones，the mining method optimization or design was carried out in each zone，it is recommended that the shallow-hole shrinkage mining，the room and pillar method which uses electric scrapers to remove ore and the inclined room and pillar mining method that electic scrapers synergy with blast power to remove ore wee used in zone 1，zone 2 and zone 3 respectively，forming a mining method optimization and design technology for the orebody with complex occurrence.The results show that the proposed method can effectively solve the mining technical problem of the orebody with complex occurrence in the northwest mining area of Daxin Manganese Deposit，and provide a new idea for the efficient and synergistic mining of the orebody with complex occurrence.