地下矿山缓倾斜多层矿体协同开采设计实践

云南锡业股份有限公司老厂分公司13-8#矿群为缓倾斜多层矿体，属于典型的复杂难采矿体。为实现该矿群的安全、高效和经济开采，对传统的上行式及下行式开采方案进行了分析，指出了传统方案的利 弊，通过引入“协同开采”理念，提出了缓倾斜多层矿体的协同开采设计方案。该方案将缓倾斜多层矿体的开采扰动、采空区处理、地压管理控制三者结合起来整体考虑，根据矿体赋存条件，将13-8#矿群划分为上盘 区矿块、下盘区矿块及13-8-7#倾斜矿体，并完成了矿群和上、下盘区矿块开采顺序的优化设计。研究表明：协同开采设计方案充分考虑了各层矿体的开采技术条件，通过矿块划分和回采顺序优化，实现了多层矿体的 协同开采，有助于提高缓倾斜多层矿体开采的安全性、高效性和经济性。该方案为实现老厂分公司13-8#矿群开采提供了新思路，也为其他类似矿体开采设计提供了借鉴。

Design Practice of Synergetic Mining for Gently Inclined Multi-layer Orebodies in Underground Mines

The 13-8# ore cluster of the Laochang Branch of Yunnan Tin Co.，Ltd. is a gently inclined multi-layer orebody，which is a typical complex difficult-to-mine orebody.In order to achieve the safety，high productive capacity and economy of mining in this mine，the traditional ascending and descending mining schemes were analyzed，and the advantages and disadvantages of traditional schemes were pointed out.By introducing the concept of "synergetic mining"，a scheme for synergistic mining of gently inclined multi-layer orebody was proposed.The scheme combines the mining disturbance of the gently inclined multi-layer orebody，the treatment of the goaf，and the control of ground pressure management as a whole.According to the geotechnical conditions of the orebody， the 13-8# ore cluster was divided into upper panel，lower panel and 13-8-7# inclined orebody，and the mining sequence of the ore cluster and the upper and lower panel was optimized.The study results show that the synergetic mining design scheme fully considers the geotechnical conditions of each orebody.Through the division of panels and the optimization of the mining sequence，the synergetic mining of multi-layer orebodies is realized，besides that，the synergetic mining scheme designed in this paper is help for ensuring the safety，high productive capacity and economy of the mining operation of gently inclined multi-layer orebodies.This scheme provides new ideas for the mining of the 13-8# ore cluster of Laochang Branch Yunnan Tin Co.，Ltd.，and also provides a reference for the mining design of other similar orebodies.