摘要
以新疆库拜煤田煤层气开发区块近似直立岩层为研究对象,利用地表大比例尺构造裂隙填图和井下煤层对比解剖技术,验证了在同一构造层的地表和井下煤层及围岩中发育相似的裂隙特征,建立了围岩与煤层裂隙发育特征之间的对应关系,包括裂隙发育方向和程度,提出了一种预测煤层裂隙系统和煤体结构的新方法,划分出研究区煤层气布井有利区和不利区。
Focused on the approximate vertical rock in Kubai mining area,Xinjiang,using of large scale structural joints geological mapping technology and coal reservoir comparative anatomy method in mine,discovered the correspongding relationship of exogenetic fracture in coal seam and surrounding rock.The results show that the fracture growth degree and predominant direction in coal seam and surrounding rock is accordant.By means of observation structural joints on the surface,discovered the relationship of fracture growth degree relative to lithology,rock stratum thickness and distance of geologic structure.According to the fracture growth degree,it can be divided into the densely fissure zone,the moderate fissure zone and the poor developed fissure zone.The method enriched the technology of coal structure prediction and can be used to predicted fracture growth degree of deep coal seam, meanwhile can serve to coalbed methane wells ar- rangement.
出处
《新疆地质》
CAS
CSCD
2016年第3期428-431,共4页
Xinjiang Geology
基金
国家科技重大专项(2016ZX05041002-002)资助
关键词
新疆库拜煤田
煤层与围岩
裂隙系统
对应关系
煤体结构预测
Kubai mining area:Coal seam and surrounding rock,Fracture system
Corresponding relationship
Prediction coal structure