宁夏某煤矿顶板地下水数值模拟

发布时间：2018-01-23 21:42

本文关键词： 地下水数值模拟疏降水方案矿坑涌水量　出处：《石家庄经济学院》2015年硕士论文　论文类型：学位论文

【摘要】：本矿位于宁夏回族自治区中东部地区,面积约85km2。侏罗系直罗组下段砂岩含水层(Ⅱ)及2~6煤间砂岩含水层(Ⅲ)是对本井田影响较大的含水层,本论文主要对2号煤顶板含水层水位进行地下水数值模拟。本论文通过收集、整理矿区勘察工作的钻孔数据和水文地质资料,分析矿区地层特征,让我们对该矿区地层和含水层有个整体的认识。建立三维水文地质结构模型,清晰明了地观察模型内部的地层形态。对矿区水文地质条件分析后,建立地下水数值模型,用“三维流数值法”对矿区首采区2号煤顶板直罗组下段砂岩含水层进行矿井涌水量预测,最后提出较优的疏降水方案。本论文共包括五章,第一章主要介绍了本论文的选题意义,介绍了目前地下水数值模拟的国内外发展情况,总结了本文的主要内容与技术路线;第二章介绍了研究区自然地理概况,包括矿区的地理位置、地形地貌、气象与水文和矿井概况;第三章主要包括井田地质和井田水文地质,包括地层、构造、含水层及其特征、隔水层、地下水的补给、径流、排泄条件等;第四、五章是本论文的核心,通过对矿区进行水文地质条件分析,已获得的资料与数据,运用Visual MODFLOW软件建立矿坑首采区的地下水数值模拟模型,反复识别与验证模型,然后对采区矿坑涌水量进行预测,提出疏降水方案。“三维流数值法”在自然状态下预测煤层顶板正常涌水量为1700 m3/h,最大涌水量为2482 m3/h;在人工改造状态下预测煤层顶板涌水量为1870 m3/h,最大涌水量为2730.2 m3/h。
[Abstract]:The mine is located in the middle part of the Ningxia Hui Autonomous Region, an area of about 85km2. under the Jurassic Zhiluo Formation sandstone aquifer (II) and 2~6 coal between the sandstone aquifer (III) is the impact on the Honi Da aquifer is large, this paper focuses on No. 2 coal roof aquifer of groundwater numerical simulation. This paper through the collection, collation the investigation of mine drilling data and hydrogeological data, analysis of strata characteristics, let us on the strata and the aquifer have a whole understanding. The establishment of three-dimensional hydrogeological structure model, a clear observation of internal models of the strata form. Analysis of hydrogeological condition, a numerical model of groundwater, with "three numerical method of mining the first mining area in No. 2 coal roof of the lower member of Zhiluo Formation sandstone aquifer of mine inflow prediction, and finally puts forward the sparse precipitation scheme is the best. This paper includes five Chapter, the first chapter mainly introduces the significance of the topic, introduces the development of the groundwater numerical simulation at home and abroad, summarizes the main content of this paper and the technical route; the second chapter introduces the research area of natural geography, including the mining area of the geographical location, topography, meteorological and hydrological survey and mine; the third chapter including mine geology and Ida Min geology, including the formation, structure, and characteristics of the aquifer, aquitard, groundwater recharge, runoff and discharge conditions; the fourth, fifth chapter is the core of this thesis, the hydrogeological conditions of mining area analysis, information and data have been obtained, using the groundwater numerical simulation model of Visual MODFLOW software the establishment of the first mining area in the mine, repeated model identification and verification, and to predict the water inflow of mine mining area, proposed sparse precipitation scheme. "Three dimensional numerical method in natural state It is predicted that the normal water inflow of coal seam roof is 1700 m3/h, and the maximum water inrush volume is 2482 m3/h. In artificial transformation, the prediction of coal seam roof water inflow is 1870 m3/h, and the maximum water inflow is 2730.2 m3/h..

【学位授予单位】：石家庄经济学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.461

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