神木北部矿区5-2煤层厚度及其底板高程趋势分析  

Trend analysis of the No.5-2 coal thickness and it’s bottom altitude in northern Shenmu mining area

作　　者：苗霖田[1] 姚建明[2] 吕婷婷[3] 杜荣军[1] 

机构地区：[1]西安科技大学地质与环境工程系 [2]陕西省煤田地质局一八五队,陕西榆林719000 [3]中国地质大学数学地质与遥感地质研究所

出　　处：《煤田地质与勘探》2008年第3期12-15,共4页Coal Geology & Exploration

摘　　要：为了查清神木北部矿区5-2煤层赋存特征及成因,选取了该矿区172个典型钻孔数据,用趋势分析法研究了5-2煤层的厚度及其底板高程度变化特征。结果显示:该区煤层厚度总体为南北厚中部薄,东厚西薄;底板高程为南北高中部低,东高西低;煤层厚度和其底板高程间普遍存在正相关关系。在该区构造稳定的背景下,后期改造对煤层厚度及其底板的影响很小,煤层赋存特征主要受沉积与剥蚀的控制。In order to find out the reason of occurrence feature of No. 5-2 coal seam in Shenmu mining area, the trend analysis is used to research the seam thickness and it＇s bottom altitude based on 172 boreholes＇ data in northern Shenmu mining area. The trend analysis shows that the coal thickness is generally thicker in southern and northern part than that of central part and thicker in eastern than that in western part. The bottom elevation of southern and northern area is higher than that of central area, and higher in eastern than that in werstern area. The relation between coal thickness and it＇s bottom elevation is studied. The result shows that there is positive correlation between them with some partical area. Under the background of regional tectonic stability, the cause of their formation and it＇s control to occurrence feature of coal suggested that the coal occurrence feature is controlled are analyzed on the view of deposition and erosion. It is by deposition and erosion; The deuteric deformation has only small influence.

关 键 词：趋势分析 煤层赋存 底板高程 5-2煤层 神木北部矿区 

分 类 号：P618.11[天文地球—矿床学] P628.1[天文地球—地质学]