窑街煤田外围赋煤特征及找煤方向
Coal-Bearing Features and Prospecting Orientation in Peripheral Yaojie Coalfield
-
摘要: 窑街煤田含煤地层为中侏罗统窑街组,煤炭资源较丰富.由于多年开采,资源面临枯竭,解决资源接续问题已成当务之急.通过对区内主要控煤构造F19断层的特征和煤系地层层序的研究,推断F19断层可能是煤系沉积过程形成的同沉积断裂,对煤层赋存起控制作用,预测研究区F19断裂带以东有可采煤层存在.通过研究窑街矿区沉积特征、聚煤规律和构造控煤因素,认为研究区与窑街矿区应属同一山间聚煤坳陷,成煤环境为河湖沼泽相,岩相旋回以河流相开始,泛湖相结束,煤层位于旋回中上部,其厚度大,含煤性好,资源潜力大.根据已知矿区地质条件,结合以往地质工作,提出在窑街矿区东部的散马池—阳洼一带开展找煤工作.Abstract: The coal-bearing strata of Yaojie coalfield belong to middle Jurassic Yaojie formation, which contains abundant coal resources. Due to years of exploration, the coal resources is about to be exhausted, the issue of follow-up resource is a top priority. Through reviewing the characteristics of the main coal-controlling structure(F19 fault) and coal measures stratigraphic sequence, the authors inferred that the F19 fault is a syndepositional fault that controls the coal bearing, and predicted that the mineable coal seams lie in the east part of the F19 fault. Based on analysis of sedimentary characteristics, coal-accumulating patterns and coal-controlling factors of the Yaojie coalfield, it is considered that the study area and Yaojie coalfield should be in an identical intermontane coal accumulation depression. The coal-forming environment belongs to fluvial, lacustrine and swamp facies, the lithofacies cycle led off with fluvial facies and end up with pan-lacustrine facies. Located in middle upper part of the cycle, the coal seams have good resource potential with large thicknesses and good coal-bearing property. According to known geological conditions and previous geological works, this paper proposed that the east part of the coalfield like Shanmachi and Yangwa are favorable regions of coal prospecting.
-
-
陈守建, 王永, 伍跃中,等. 西北地区煤炭资源本底及开发潜力[J]. 西北地质, 2006, 39(4):40-56.
CHEN Shoujian, WANG Yong, WU Yuezhong, et al. Coal Resources and Development Potential in North west China [J]. Northwestern Geology, 2006, 39 (4): 40-56(in Chinese with English abstract).
甘肃煤田地质149队.甘肃省窑街煤田深部扩大区普查勘探地质报告[R]. 兰州:甘肃煤田地质149队, 1997.
甘肃煤田地质149队.甘肃省兰州市窑街矿区海石湾井田煤炭勘探报告[R]. 兰州:甘肃煤田地质149队, 1988.
张虎权, 杨中轩. 民和盆地的构造特征[J]. 石油实验地质, 1996, 18 (3):283-288.
ZHANG Huquan,YANG Zhongxuan. The Structural Characteristics of the Minhe Basin[J]. Experimental Petroleum Geology, 1996, 18(3): 283-288(in Chinese with English abstract)
曹守连. 民和盆地的构造分析[J]. 石油地质与天然气, 1997, 18(2): 158-160.
CAO Shoulian. Structural Analysis of Minhe Basin[J]. Oil & Gas Geology, 1997, 18(2): 158-160 (in Chinese with English abstract).
朱小宁, 耿红敏. 窑街煤田F19 断裂带特征及找煤方向推断[J]. 煤炭科学技术, 2007, 35(7): 27-30.
ZHU Xiaoning, GENG Hongmin. F19 fracture zone features and direction deduction to seek seam in Yaojie Coal Field[J]. Coal Science and Technology, 2007, 35(7):27-30 (in Chinese with English abstract).
陶明信, 陈发源, 徐永昌. 窑街煤田F19断裂带地质构造特征与演化分析[J]. 中国煤田地质, 1995, 7(3): 12-16.
TAO Mingxin, CHEN Fayuan, XU Yongchang. The Evolution and Structural Characteristics of Taojie F19 Fracture Zone[J]. Coal Geology of China, 1995, 7(3): 12-16 (in Chinese with English abstract).
张虎权, 王廷栋, 阎存凤, 等. 民和盆地侏罗系地层划分与对比[J]. 地层学杂志, 2007, 32(1): 63-67.
ZHANG Huquan, WANG Tingdong, YAN Cunfeng, et al. The Subdivision and Correlation of the Jurassic System of the minhe Basin[J]. Journal of Stratigraphy, 2007, 32(1):63-67 (in Chinese with English abstract).
宋玉勤,郭巍,刘招君,等. 民和盆地窑街煤田油页岩沉积环境分析及开发利用前景预测[J]. 世界地质, 2006, 25(1): 43-48.
SONG Yuqin, GUO Wei, LIU Zhaojun, et al. Sedimentary environmental analysis and exploration perspective forecasting of oil shale in Yaojie Coal Field, Minhe Basin[J]. Global Geology, 2006, 25(1): 43-48 (in Chinese with English abstract).
张泓, 李恒堂, 熊存卫, 等. 中国西北侏罗纪含煤地层与聚煤规律[M]. 北京: 地质出版社, 1998: 113.
ZHANG Hong, LI Hengtang, XIONG Cunwei, et al. Coal bearing formation and coal accumulating regularity in Jurassic, northwest China[M]. Beijing: Geological Publishing House, 1998: 113 (in Chinese with English abstract).
-
计量
- 文章访问数: 2441
- PDF下载数: 2850
- 施引文献: 0
下载: