本文選題：充水水源 + 礦坑涌水量　； 參考：《合肥工業(yè)大學》2017年碩士論文

【摘要】：識別礦坑充水水源,進行礦坑涌水量預測,不僅是金屬礦山防治水措施、安全生產(chǎn)的前提,也是水環(huán)境保護的基礎,更是礦山開發(fā)利用方案合理制定的支撐。旗桿樓鐵礦地處黃淮河沖積平原,位于安徽省宿州市蕭縣境內(nèi)。該鐵礦為全隱伏的礦床,礦體主要賦存于奧陶系蕭縣組泥質(zhì)灰?guī)r、大理巖及白云質(zhì)灰?guī)r中。礦床開采時,含水層中的水可直接進入坑道,蕭縣組巖溶裂隙水為其直接充水水源;奧陶系下統(tǒng)馬家溝組巖溶裂隙水間接流入礦坑,成為間接充水水源。對比該鐵礦已有水文地質(zhì)成果,本論文開展補充水文地質(zhì)試驗(抽水、注水試驗),識別鐵礦充水水源;借助同位素示蹤理論,結合地下水中和的相關關系,對地下水進行溯源分析。運用解析法,分析計算礦坑正常涌水量12277m3/d。結合補充勘察結果,通過含水層、隔水層空間分布特征、研究區(qū)邊界條件的概化、地下水動態(tài)特征,建立水文地質(zhì)概念模型,在此基礎上,利用有限差分原理,運用Visual Modflow數(shù)值模擬軟件建立地下水系統(tǒng)數(shù)值模型。識別、并對數(shù)值模型驗證后,預測礦區(qū)-500 m開采水平下礦坑初期涌水量為11791m3/d,穩(wěn)定后正常涌水量約為8513 m3/d。研究區(qū)第三系富水性及透水性弱,且第四系底部存在為富水性、透水性極差的極弱含水層,對第四系上部孔隙水具有一定的“屏蔽”作用,由此得出的礦坑涌水量小于已有成果。為礦床未來安全生產(chǎn)、合理布置防治水措施提供參考指導作用。
[Abstract]:It is not only the premise of water prevention measures and safe production but also the foundation of water environment protection and the support of rational formulation of mine exploitation and utilization scheme to identify the source of water filling and forecast the water discharge of mine. Flag Tower Iron Mine is located in Huanghuai River Alluvial Plain, Suzhou County, Anhui Province. The ore deposit is a fully hidden ore deposit, and the orebody is mainly located in argillaceous limestone, marble and dolomitic limestone of the Ordovician Xiaoxian formation. The water in the aquifer can enter the tunnel directly, the karst fissure water of Xiaoxian formation is its direct water source, and the karst fissure water of the Lower Ordovician Majiagou formation flows indirectly into the mine pit as an indirect water source. In contrast to the existing hydrogeological achievements of the iron ore, this paper carries out supplementary hydrogeological tests (pumping and water injection tests) to identify the source of water filled with iron ore, and combines the correlation of groundwater neutralization with isotope tracer theory. Traceability analysis of groundwater is carried out. An analytical method is used to analyze and calculate the normal inflow of water from the pit at 12277m3 / d. Based on the results of supplementary survey, the hydrogeological conceptual model is established through the spatial distribution characteristics of aquifer and aquifer, the generalization of boundary conditions in the study area, and the dynamic characteristics of groundwater. On this basis, the finite difference principle is used. The numerical model of groundwater system is established by Visual Modflow numerical simulation software. After identifying and verifying the numerical model, it is predicted that the initial water inflow of mine pit is 11791m3 / d at the mining level of -500m, and the normal inflow after stabilization is about 8513 m3 / d. In the study area, the Tertiary system is rich in water and weak in permeability, and the bottom of the Quaternary system has very weak aquifers with rich water content and poor permeability, which has a certain "shielding" effect on the pore water of the upper part of the Quaternary system. The water inflow from the mine pit is less than the existing results. It provides a reference for the future safe production of ore deposit and reasonable arrangement of water prevention measures.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD742

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本文編號：2001346