CAJ | 학술논문

川南煤田古叙矿区河坝矿段龙潭组含主要可采煤层C11和C25,为了查清煤层赋存规律及影响因素,选取区内85个钻孔数据进行分析.C11煤层形成于三角洲平原上泥炭沼泽环境,煤层层位发育稳定,为中厚煤层,属基本全区可采煤层,在河坝向斜南翼厚度大于北翼,煤层较厚的区域主要集中在北翼西部的5-13号线和南翼的1-85号线,煤层厚度变化还受地质构造和后期冲刷作用的影响;C25煤层形成于残积平原泥炭沼泽环境,同时受沉积基底起伏影响,煤层厚度变化较大.
천남매전고서광구하패광단룡담조함주요가채매층C11화C25,위료사청매층부존규률급영향인소,선취구내85개찬공수거진행분석.C11매층형성우삼각주평원상니탄소택배경,매층층위발육은정,위중후매층,속기본전구가채매층,재하패향사남익후도대우북익,매층교후적구역주요집중재북익서부적5-13호선화남익적1-85호선,매층후도변화환수지질구조화후기충쇄작용적영향;C25매층형성우잔적평원니탄소택배경,동시수침적기저기복영향,매층후도변화교대.
The Longtan Formation in the Heba sector, Guxu mining area, in southern Sichuan coalfield contains main mineable coal seams C11 and C25. To make a through investigation of coal seam hosting features and controlling factors have selected data from 85 bore-holes in the area carried out analysis. The coal C11 was formed on a delta plain peat bog environment, coal seam horizon is stably devel-oped, a medium thickness coal seam and basically mineable in whole area;thickness in south limb of the Heba syncline is larger than in north limb, thicker coal region is mainly concentrated within western north limb Lines 5~13 and south limb Lines 1~85, the variation of thickness also impacted by geological structure and later scouring actions. The coal C25 was formed on an eluvial plain peat bog envi-ronment, simultaneously impacted by sedimentary basement relief thus coal thickness varies greatly.