为了解和预测煤层聚集特征及其项板的稳定性,进行沉积环境分析是十分必要的。覆盖在泥炭层上的沉积物的沉积环境是控制煤层顶板稳定性的主要因素。因此,详细研究顶板的沉积环境,可用以预测顶板的稳定程度及合理选择顶板支护系统。苏联顿涅茨煤田和美国的朗永煤矿,将该方法已成功地运用于指导和预测矿井设计、井下掘进和回采期间的顶板管理。但在我国刚刚起步。本文试图应用此方法,在进行沉积环境分析的基础上,探讨新郑矿区山西组二_1煤层顶板的稳定性及其合理的支护方法。 新郑矿区位于郑州市以南约35公里,是一个计划开采的矿区,面积约150km~2。早二 In order to understand and predict the characteristics of coal pool and its stability, it is necessary to analyze sedimentary environment. The depositional environment of the sediments covered on the peat layer is a major factor controlling the stability of the coal seam roof. Therefore, a detailed study of the roof deposition environment can be used to predict the stability of the roof and roof support system. The Donets coalfield in the Soviet Union and the Longyong coal mine in the United States have successfully applied this method to guide and predict roof management during mine design, downhole drilling and mining. But in our country has just started. Based on the analysis of sedimentary environment, this paper tries to find out the stability of the roof of No.2-1 coal seam in Shanxi Formation in Xinzheng Mining Area and the reasonable supporting method. Xinzheng Mining Area is located about 35 kilometers south of Zhengzhou City. It is a planned mining area with an area of ​​about 150km ~ 2. As early as two