中文摘要：

从沉积和构造控煤的角度研究了琼东南盆地崖城组煤系的空间展布特征。崖城组沉积早期主要发育河流一湖泊沉积，煤层主要发育在辫状河三角洲平原沼泽环境；中一晚期主要发育泻湖和潮坪沉积，煤层主要发育在潮坪沼泽环境。在平面上，煤层主要发育在盆地的北部各凹陷／凸起周缘相对平坦的斜坡带上；南部聚煤作用次之。在构造控制作用下，不同的地堑、地垒组合控制了煤系发育的岩相组合特征、煤系的水平分带性、构造沉降的速率和煤系的厚度。从不同的角度阐述了煤层的发育与分布特征、沉积和构造的控煤作用．为预测煤层发育和分布特征提供了依据。

英文摘要：

Based on sedimentary and structural controiling coal,this paper focused on the spatial distribution characteristics of coal in Yacheng Formation, Qiongdongnan Basin, which mainly developed into fluvial-lacustrine deposition in early stage, with the coal seam occurring on braided river delta plain swamp, and into lagoon-tidal flat deposition with the coal seam mainly located in tidal flat swamp during the middle stage. HorizontalIy,coal seams are mainly distributed in the slope belt around the edges of sags and uplifts in the northern basin, whereas coal accumulation becomes weak in the southern basin. Under structure control, different combinations of graben and horst together control facies associations of coal seam, horizontal zones of coal seams, tectonic subsidence rate and coal thickness. In the paper, the authors state the development and distribution characteristics of coal seams as well as coal controlling factors of sedimentation and tectonic differently,and provide the basis for forecasting.