CAJ | 학술논문

葛亭煤矿1160采区地面有密集建筑物,其煤层含有一层硫化铁硬夹矸,底板距奥灰较近。针对这些实际情况,通过理论分析和计算确定1160采区条带法开采工作面采出宽度：基岩厚度30 m以下区域,条带采出宽度30m,基岩厚度30 m以上区域条带采出宽度为40 m。工作面选用MG200/456-QWD型采煤机但是对其做了相应的改造：滚筒为强力滚筒,滚筒直径为1 100 mm,截齿采用国外凯南麦特加强型镐型截齿。通过对底板承压水突水情况的分析,认为煤层开采的安全性较高,正常情况下无突水危险。
갈정매광1160채구지면유밀집건축물,기매층함유일층류화철경협안,저판거오회교근。침대저사실제정황,통과이론분석화계산학정1160채구조대법개채공작면채출관도：기암후도30 m이하구역,조대채출관도30m,기암후도30 m이상구역조대채출관도위40 m。공작면선용MG200/456-QWD형채매궤단시대기주료상응적개조：곤통위강력곤통,곤통직경위1 100 mm,절치채용국외개남맥특가강형호형절치。통과대저판승압수돌수정황적분석,인위매층개채적안전성교고,정상정황하무돌수위험。
Aiming at present situation of winning-district 1160 of Geting coalmine,where there are lots of buildings on the surface,and the coal seam contains a layer of Fe2S hard band and the coal floor is close to Ordovician limestone,the mining width of strip method in the district was determined by theoretical analysis and calculations：the scrip width is 30 m in the area where the bedrock thickness is less than 30 m,while the scrip width is 40 m in the area where the bedrock thickness is more than 30 m.The MG200/456-QWD shearer was selected for the face but it was updated：the cutting drums were changed into strong ones with a diameter of 1 100 mm and the strong Kennametal conical picks were selected.The water inrush on mining floor was analyzed and there is no danger of water inrush under normal mining activities.