CAJ | 학술논문

为了探讨济北矿区下组煤底板灰岩水岩作用及其微观机理，对山东岱庄煤矿深部底板灰岩进行了电导率试验研究，并通过荧光分析和电镜扫描对灰岩的微观机理进行相关探讨。研究结果表明：①通过对自来水和纯净水浸泡灰岩试样的电导率测试，发现灰岩的溶解可分为快-慢-稳定3个阶段；自来水浸泡的溶液电导率随时间增加而减小，纯净水则相反。②荧光试验发现，自来水浸泡前后，灰岩各化学组成的质量分数并没有明显变化，灰岩中矿物主要以方解石( CaCO3)为主，占90%以上；含有少量石英( SiO2)，而Na、K、Mg、Al等元素总的质量分数不到3%。③通过扫描电镜发现，自来水浸泡前的岩样微观结构较为致密，多呈团块状，断面较为光滑，有一定的规则性，孔隙发育较弱；浸泡后的岩样粒内溶孔发育，并有明显的溶蚀孔隙和缝隙，孔隙连通性良好，而且其结构较浸泡前疏松，呈碎屑状。
위료탐토제북광구하조매저판회암수암작용급기미관궤리，대산동대장매광심부저판회암진행료전도솔시험연구，병통과형광분석화전경소묘대회암적미관궤리진행상관탐토。연구결과표명：①통과대자래수화순정수침포회암시양적전도솔측시，발현회암적용해가분위쾌-만-은정3개계단；자래수침포적용액전도솔수시간증가이감소，순정수칙상반。②형광시험발현，자래수침포전후，회암각화학조성적질량분수병몰유명현변화，회암중광물주요이방해석( CaCO3)위주，점90%이상；함유소량석영( SiO2)，이Na、K、Mg、Al등원소총적질량분수불도3%。③통과소묘전경발현，자래수침포전적암양미관결구교위치밀，다정단괴상，단면교위광활，유일정적규칙성，공극발육교약；침포후적암양립내용공발육，병유명현적용식공극화봉극，공극련통성량호，이차기결구교침포전소송，정쇄설상。
Experimental study was made on the conductivity of the deep floor limestone in Daizhuang Coal Mine in order to probe into the water-rock interaction and microscopic mechanism of the floor limestone of the lower coal seams in Jibei Coal Mining Area, study was also carried out on the microscopic mechanism of the floor limestone by fluorescence analysis and electron microscope scanning. The results showed that: ① It was found from the conductivity measurement of the limestone samples soaked by tap water and pure water that the dissolution of limestone can be divided into three stages, i. e. the fast-slow-steady stages; the solution conductivity of the limestone soaked by tap water decreased with the increase of time, but for the solution conductivity of limestone soaked by pure water, the measurement result was just contrary;② It was found from the fluorescence analysis that before and after the limestone was soaked by tap water, its chemical compositions were almost unchanged, it contains more than 90% of calcareous spar ( CaCO3 ) , a small amount of quartz ( SiO2 ) and Na, K, Mg and Al with total content less than 3%;③ It was found from electron microscope scanning that before the limestone was soaked by tap water, its microstructure is relatively dense, most in crumb structure, its cross-section is relatively smooth, has certain regularity and its pore development is relative weak;after it was soaked, the dissolution pores are well-developed, distinct dissolution pores and cracks exist, the pores are well conducted, the structure of limestone becomes loose and is in fragmental.