摘要:
昆仑山赋煤带由东向西共分三个区段,分别为昆东煤田、布尔汉布达山区及红水河区。本赋煤带工作程度很低,目前仅在昆东煤田发现有塔妥煤矿、红土坡煤矿及苦海煤矿,均为小型煤矿,成煤时代为早—中侏罗世。其中部的布尔汗布达山地区及西部的红水河区一带虽有石炭纪及晚三叠—早侏罗世含煤地层分布,但均为人迹罕至的高山地带,地质工作程度较低。秋吉地区位于昆仑山含煤区中部,属于布尔汗布达山地区,东部为昆东煤田,西部属红水河区。秋吉地区以往有小煤窑生产,2010年该区通过实施煤炭调查后,发现该区具进一步找煤远景,初步确定本区有早、中侏罗世含煤地层,并有可采煤层赋存。通过对塔妥煤矿和秋吉煤矿点的煤矿特征对比以及对本区含煤地层沉积建造特征、煤系分布特征、地层层序特征及物探重力异常特征等分析,探讨秋吉地区找煤前景,并指出进一步找煤方向。
Abstract:
The Kunlun coal-bearing zone can be divided into three zones:the East Kunlun coalfield,the Buerhandashan zone,and the Hongshuihe zone;from east to west,respectively.There have been few exploration work done in this coal-bearing belt.Currently,coal is only found in East Kunlun coalfield,in Tatuo coal mine,Hongtupo coal mine and Kuhai coal mine,all of which are small-sized and formed in early or middle Jurassic.Unlike East Kunlun coalfield,the formation age of the coal-bearing strata spread in the other two zones is later Trassic and early Jurrasic.Both of these two zones have very low exploration work because of rough terrain,including the high elevation,and limited roads.The Qiuji zone located in the middle part of Kunlun coal-bearing zone belongs to the Buerhandashan zone,where some small-sized coalpits exist.From previous coal explorations,this zone is found to have coal-bearing potential,which are divided:the early Jurrasic and middle-Jurrasic strata;of these,some parts of them can be recoverable.In this paper,we compared the coal mine characteristics between the Tatuo and the Quiji coal mines and analyzed the depositional formation,distribution of coal and strata sequence and gravity anomaly of the coal-bearing strata,then discussed the coal potential in the Qiujin zone,and guide the direction of the future explorations.
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