云南马河向斜煤层赋存规律

马河向斜分划为威信段、镇雄段2个区段,待威信段、镇雄段相继施工后,揭露出诸多地质现象,凸显无疑.通过确定其区域特殊位置和收集其大地构造背景资料,结合含煤地层沉积环境及聚煤环境条件,采用4套煤层、7个标志层对比的方法验证,归纳出整个马河向斜构造演化特征以及含煤特性、可采煤层层位及煤层赋存规律,透彻分析聚煤环境对煤层变化的影响.马河向斜聚煤规律的研究不仅具有非常重要的现实意义,而且为类似的向斜构造指明煤层赋存层位和有利勘探方向.

Occurrence law of coal seam about Mahe syncline in Yunnan Province

Mahe syncline is divided into Weixin member and Zhenxiong member.After the course of construction in Weixin and Zhenxiong member,lots of geological phenomenon is highlighted and undoubtedly revealed.The occurrence of coaly-stratum,the layer of minable seam,and the law of occurrence coal seam in the tectonic evolution characteristics of whole Mahe syncline can be generalized through determining the special regional position and collecting its special tectonic background information,combining coaly-stratum sedimentary environment and coal-forming environment condition,and comparing the 4 coal seams and 7 marker seams.A thorough analysis indicates that coal-accumulating environment can affect the change of coal seam.The study of coal-accumulating laws in Mahe syncline not only is of very importantly realistic meaning,but also suggests the occurrence stratigraphic position of coal seam and provides exploration direction for similar syncline structure.