CAJ | 학술논문

为了探测不粘煤和焦煤的孔隙率并研究其影响因素，从安徽等多个矿区采集研究对象，利用μCT225kVFCB型CT试验系统对煤样进行显微观测，分别计算出2种煤的孔隙率，得到所有孔隙的面积，并对比分析2种煤内部孔隙个数随着孔隙面积增大的变化趋势。结果表明，煤的孔隙率不会随着煤阶升高而增大，且焦煤煤样最大孔隙面积小于不粘煤煤样的最大孔隙面积。因此，焦煤孔隙率明显低于不粘煤。
위료탐측불점매화초매적공극솔병연구기영향인소，종안휘등다개광구채집연구대상，이용μCT225kVFCB형CT시험계통대매양진행현미관측，분별계산출2충매적공극솔，득도소유공극적면적，병대비분석2충매내부공극개수수착공극면적증대적변화추세。결과표명，매적공극솔불회수착매계승고이증대，차초매매양최대공극면적소우불점매매양적최대공극면적。인차，초매공극솔명현저우불점매。
In order to probe the porosity of non-caking coal and coking coal and study the influencing factors,large amount of coal samples from Anhui province were collected as research objects. TheμCT225kVFCB high-precision CT test analysis system was utilized for microscopic observation. Then the porosity of the above two coal types and the areas of all pores were achieved. Moreover, pore number′s change trend along with the increasing in the pore′s areas was analyzed. The result showed that coal′s porosity did not grow with the increasing in the coal rank. In addition, the maximum pore area of coking coal was smaller than that of non-caking coal. Therefore, the porosity of coking coal was smaller than that of non-caking coal obviously.