古交矿区奥陶系顶部隔水关键层厚度研究  

Study on Thickness of Key Water Isolated Stratum above Ordovician System in Gujiao Mining Area

作　　者：刘建成 徐会军[2,3] 李俊杰 崔祥琨[5] 郭盛彬[5] 

机构地区：[1]开滦能源化工股份有限公司,河北唐山063018 [2]中国矿业大学煤炭资源与安全开采重点实验室,江苏徐州221008 [3]神华集团有限公司,北京100011 [4]西山煤电集团地质处,山西太原030053 [5]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭工程》2011年第5期83-85,共3页Coal Engineering

摘　　要：文章以古交矿区屯兰矿为例,通过补充钻探、抽水试验、井下物探、岩矿测试等手段,运用有关的理论、技术、方法,分析了屯兰矿奥陶系顶部峰峰组和上马家沟组岩溶发育特征,研究了奥陶系顶部隔水关键层厚度。研究表明,古交矿区屯兰矿峰峰组上段上部近30m厚的古风化裂隙充填带和峰峰组下段约70m厚的第一泥灰岩石膏层可分别作为防峰峰组局部中等富水区和上马家沟组中—上部第二、三含水层组突水的隔水关键层。Taking the Tunlan mine in Gujiao Mining Area as an example,with the additional drilling exploration,pumping test,underground physical exploration,lithology measurement and test and other means,the related theory,technology and method was applied to analyze the karst development features of the Fengfeng Group and Upper Majiagou Group above the Ordovician System in T Mine and to study the thickness of the key water isolated stratum above the Ordovician System.The study showed that the palaeo-weathered crack backfill zone with a thickness about 30m above the top section of the Fengfeng Group and the first limestone gypsum layer with a thickness about 70m at the low section of Fengfeng Group in Tunlan mine of Gujiao Mining Area would be the key water isolated strata of water inrush for the local medium watery zone of Fengfeng Group and the second and third aquifers at the middle and top section of Upper Majiagou Group individually.

关 键 词：古交矿区 奥陶系 隔水关键层 峰峰组 上马家沟组 

分 类 号：P641.4[天文地球—地质矿产勘探]