青海省牦牛山地区位于柴达木盆地北缘，侏罗系煤层地质条件好。在各煤矿点开展的新一轮地质勘查工作，显示了巨大的煤炭资源潜力。研究区聚煤规律研究不足，制约了进一步勘探开发工作。本文在大量前人研究基础上，以沉积学、煤田地质学及构造地质学理论为指导， 进行了大量野外露头剖面、 钻孔岩芯观察基础， 结合钻孔及物探资料，系统地开展了研究区侏罗系石门沟组煤层发育特征、 沉积相、 聚煤模式及构造控煤研究，并以古地理沉积环境、沉积时期古构造和后期控煤构造几个方面为有利区优选依据，进行了聚煤有利区预测，取得了以下认识： （1）牦牛山地区位于青海省海西蒙古族藏族自治州乌兰县，东西长约 68km，南北平均宽近 22km，面积约 1492km 2 ，构造上属柴达木盆地北缘聚煤区。背斜发育，受多条逆冲断层控制，中侏系石门沟组为区内主要含煤地层，发育 M3、M4 和 M5，3 套煤层，属于中-高灰，中-高硫煤，煤层发育基本稳定。 （2）牦牛山地区中侏罗世石门沟组主要发育扇三角洲和湖泊 2 类沉积相。其中扇三角洲可进一步划分出扇三角洲平原、扇三角洲前缘和前扇三角洲 3 个亚相；湖泊可进一步划分出滨湖、浅湖和半深湖 3 个亚相。 （3）在沉积相研究的基础上，总结了扇三角洲及滨湖聚煤模式。以古地理沉积环境、 沉积时期古构造和后期控煤构造几个方面为有利区优选依据， 进行聚煤有利区预测。认为扇三角洲平原和滨湖是煤层发育的主要场所，缓慢的湖侵期和古隆起区是侏罗系煤层发育的重要条件，牦牛山复式向斜内的逆冲断层和褶皱，形成了牦牛山地区逆冲褶皱型的控煤构造式样。圈定了 ZK8-3—ZK1—ZK0-3—ZK7-2 钻孔一线和旺尕秀煤矿~赛什克煤矿一线 2 个有利聚煤区。

This paper is based on the North Beach area and Chai north coal geological report and research by previous results, sedimentology, coal geology and structural geology theory as a guide, in the observation of North Beach area of outcrop, drilling core, combined with drilling and geophysical data, fully absorb the Qinghai Coalfield Geological Exploration Institute of a large number of research results, for the system control of Shimen Coal Group coal ditch development characteristics, sedimentary facies in the study area, the coal accumulation pattern and structure, and the palaeogeographic sedimentary environment, sedimentary period and late tectonic control aspects of tectonic coal is favorable zone optimization based on forecasted coal favorable area, made the following conclusion point: (1) north beach area is located in the Qinghai Haixi Mongolian Tibetan Autonomous Prefecture in Wulan County, east-west length about 68km, North and South with an average width of about 22km, area of about 1492km2, structure is poly coal zone on the northern margin of the Qaidam Basin. Anticline development. By the multiple overthrust fault control, Middle Jurassic in Shimengou group within the area is mainly containing coal bearing strata, developmental m3, M4 and M5, 3 sets of coal seam, belonging to the middle to high ash, high sulfur coal, developed coal basically stable. (2) the North Beach area of Middle Jurassic Shimen ditch group mainly developed fan delta and lake 2 types of sedimentary facies. Fan delta can be further divided into fan delta plain, fan delta front and the front fan delta 3 sub facies; lake can be further divided into Binhu, shallow lake and semi deep lake 3 sub phase. (3) on the basis of the study of sedimentary facies, analyzes the fan delta and lake poly coal environment were analyzed and summed up the coal accumulation model, the fan delta plain flood plain peat the outcrops and drilling in the extensive development of the display the study area has good poly prospect of coal. (4) according to the ancient geography sedimentary environment, the ancient structure of the sedimentary period and the late coal controlling structure, the favorable areas were selected as the basis for the prediction of coal accumulation. That fan delta plain and lake is mainly the development of coal seam is the main place, the slow transgression and paleo uplift zone is an important condition for the development of Jurassic coal seam, North Beach compound syncline thrust faults and folds, formed the North Beach area inverse thrust fold type coal controlling structures of type. The delineation of the ZK8-3 - ZK1 - ZK0-3 - ZK7-2 drilling line and wanggaxiu coal mine - SerH coal line 2 favorable coal zone.