江西煤炭科技
江西煤炭科技
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JIANGXI COAL SCIENCE & TECHNOLOGY
2015年
2期
32-34
,共3页
近距离煤层%条采工作面%开采参数设计
近距離煤層%條採工作麵%開採參數設計
근거리매층%조채공작면%개채삼수설계
close-distance seam%partial extraction working face%mining parameter design
对于近距离煤层同时开采两层煤,煤柱的设置关系到煤层压力的稳定。某矿由于煤层距离较近(9 m ),根据之前煤柱宽度及回采宽度的论证,采取采40 m留设30 m煤柱的方案。文中结合数值模拟,对该方案的开采关键参数进行了校核,使下层煤条带开采时煤柱塑性区宽度、煤柱垂直应力分布、地表变形均在要求的范围内,为其他同类采区开采设计提供借鉴。
對于近距離煤層同時開採兩層煤,煤柱的設置關繫到煤層壓力的穩定。某礦由于煤層距離較近(9 m ),根據之前煤柱寬度及迴採寬度的論證,採取採40 m留設30 m煤柱的方案。文中結閤數值模擬,對該方案的開採關鍵參數進行瞭校覈,使下層煤條帶開採時煤柱塑性區寬度、煤柱垂直應力分佈、地錶變形均在要求的範圍內,為其他同類採區開採設計提供藉鑒。
대우근거리매층동시개채량층매,매주적설치관계도매층압력적은정。모광유우매층거리교근(9 m ),근거지전매주관도급회채관도적론증,채취채40 m류설30 m매주적방안。문중결합수치모의,대해방안적개채관건삼수진행료교핵,사하층매조대개채시매주소성구관도、매주수직응력분포、지표변형균재요구적범위내,위기타동류채구개채설계제공차감。
The coal pillar design is relevant to the stability of seam pressure in extracting two levels of coal simul‐taneously in close-distance seam .According to the demonstration of the original pillar and mining width in the 9 -meter-distance coal seam ,the paper introduces the mining design of“extracting 40 meters and setting 30-meter pillar” ,whose key mining parameters have been verified by numerical simulation with the plastic zone width of pillar ,vertical stress distribution of pillar and surface deformation in standard requirements .