摘要
根据红庆河煤矿地层发育特征以及钻孔测井曲线等资料,对研究区的地层进行了重新划分,结合地层沉积相的标志,研究了地层的沉积规律。结果表明:延安组三段主要为三角洲平原亚相沉积,发育三条近南北向的河道和两条近北北东向河道,分流河道处砂地比值均大于0.4;直罗组一段和直罗组二段主要为辫状河沉积,沉积亚相为河床、泛滥平原,河道呈北西—南东向展布,河道中心的砂地比值0.6~0.8之间,此结果可为后期地层富水性评价提供依据。
According to the characteristics of formation and logging data of the boreholes in Hongqinghe Coal Mine,the strata in the study area were re-divided,and the sedimentary law of the strata was studied combining with the mark of the sedimentary facies. The results show that the 3 th section of Yanan formation is mainly composed of delta plain subfacies,developing three near the north-south rivers and two near the north-east rivers with the ratio of sandstone thickness to formation thickness greater than 0. 4 at distributary channel,and the 1 st and 2 nd section of Zhiluo formation were mainly composed of braided river and riverbed and flood plain of sedimentary subfacies developing several near the northwest-southeast rivers with the ratio of sandstone thickness to formation thickness between with 0. 6 and 0. 8 at river center. The results can provide a basis for the evaluation of water abundance later.
作者
刘基
杨建
王强民
王世东
LIU Ji;YANG Jian;WANG Qiang-min;WANG Shi-dong(China Coal Research Institute, Beijing 100013, China;CCTEG Xi＇an Research Institute, Xi＇an 710054, China;Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology in Shaanxi Province, Xi＇an 710054, China)
出处
《煤炭工程》
北大核心
2018年第4期97-99,104,共4页
Coal Engineering
基金
国家重点研发计划(2016YFC0501104
2016YFC0501102)
关键词
红庆河煤矿
顶板含水层
沉积规律
测井曲线
沉积相
砂地比
Hongqinghe Coal Mine
roof aquifer
sedimentary law
well logging curve
sedimentary facies
sand ratio
