厚大含水层下缓倾斜中厚矿体采矿方法设计

针对某矿区缓倾斜中厚矿体赋存特征，结合开采技术条件，通过2种采矿方法的技术经济比较,确定适宜于该矿体的采矿方法为平底结构分段空场嗣后充填法,并详细介绍矿块结构参数和采场回采工艺，为减少脉外采准工程量、便于无轨设备在采场内通行，出矿上山采用伪倾斜布置，大部分采切工程均脉内布置。该方法与底盘堑沟分段空场嗣后充填法相比，采切比降低三分之二左右，贫化率降低二分之一左右，经济效益显著，对相似矿体的开采具有一定的借鉴和指导意义。

Design of the Mining Method for the Gently Inclined Medium thick Ore Body under the Thick Aquifer

Combining the occurrence characteristics of the gently inclined medium thick ore body in a certain mining area，comparing the economic and technical conditions of two mining methods,the mining method suitable for the ore body is selected as the subsection empty field with flat bottom structure and subsequent filling mining method，and the structural parameters of ore block and stope mining technology are introduced in detail.In order to reduce the engineering quantity of out of pulse mining and facilitate the passage of trackless equipment in the stope,the uphill from the ore is in a pseudo tilted form,and most of the mining and cutting works are arranged in the veins.Compared with the subsection empty field subsequent filling mining method with a bottom trench,the cutting to cut ratio is reduced by about two thirds,and the dilution rate is also reduced by about one half,with significant economic benefits.It has guiding significance for the mining of similar ore bodies.