彬长矿区巨厚含水层特厚煤层综放开采防治水技术研究

发布时间：2018-03-08 00:17

本文选题：彬长矿区　切入点：巨厚含水层　出处：《西安科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：论文是针对彬长矿区顶部巨厚砂岩含水层下特厚煤层综放开采条件下的矿井水害问题开展的,旨在提出科学的防治水对策,保障矿井安全高产高效生产。本文采用水文地质学、地下水动力学、水化学、岩石力学等理论和方法,采用区域调查、水文钻探、测井、化探、水文试验、水文长观、两带‖专项探查、室内数值模拟等多种手段,以胡家河矿401101首采工作面水害防治为例开展研究。通过研究首次发现并提出巨厚洛河含水层在自然条件下存在上、下段分层现象,总体上上段含水层富水性较强。采动覆岩导水裂缝带波及洛河组含水层后,洛河组含水层上、下段呈现不同的充水形式。采用综合现场探查工程,得出顶板覆岩裂高采厚比可达22.32倍,导水裂缝带可波及洛河组含水层。通过洛河组含水层水文地质条件的综合分析,认为巨厚洛河组含水层不具备地面或井下钻探工程疏降的经济及技术可行性。区别于彬长矿区以往采用的以防为主、限高开采‖防治水思路,本次研究首次提出适当放、加强排、主动控水‖的防治水思路。初步建立了回采参数优化控制、排水系统通盘优化、涌水量预测、水文动态及覆岩破坏监测等技术组成的矿井主动控水防治水技术体系。基于本论文研究成果,成功实现了巨厚含水层下12m综放采高的安全回采,确保了胡家河矿井的高产高效生产,获得了良好的经济及社会效益。项目成果对彬长矿区各矿后续生产具有重要借鉴意义。
[Abstract]:This paper is aimed at the problem of mine water hazard under the condition of fully mechanized caving mining of super thick coal seam under the extremely thick sandstone aquifer at the top of Binchang mining area, aiming at putting forward scientific water control measures to ensure the safe, high yield and high efficiency production of the mine. This paper adopts hydrogeology. The theories and methods of groundwater dynamics, hydrochemistry, rock mechanics, etc., are adopted by regional investigation, hydrological drilling, logging, geochemical exploration, hydrological test, hydrological long view, special exploration of the two zones, indoor numerical simulation, etc. Taking the prevention and control of water hazard in 401101 first mining face of Hujiahe Coal Mine as an example, it is first discovered and put forward that the stratification phenomenon exists in the upper and lower sections of the giant thick Luohe aquifer under the natural conditions. As a whole, the upper aquifer is rich in water. After mining overburden rock conductivity fracture zone is spread to Luohe formation aquifer, the upper and lower aquifer of Luohe formation presents different water filling forms. It is concluded that the ratio of roof overburden crack to high mining thickness can reach 22.32 times, and the water-conducting fracture zone can be spread to the Luohe aquifer. Through the comprehensive analysis of hydrogeological conditions of Luohe formation aquifer, It is considered that the aquifer of Tuhou Luohe formation does not have the economic and technical feasibility of surface or downhole drilling engineering thinkings. For the first time in this study, the idea of preventing and controlling water is put forward, such as proper discharge, strengthening drainage and active water control. The optimal control of recovery parameters, the overall optimization of drainage system and the prediction of water discharge are preliminarily established. Based on the research results of this paper, the technology system of active water control and prevention and control of mine water is made up of hydrologic dynamic and overlying rock damage monitoring techniques. Based on the research results of this paper, the safe mining of 12m fully mechanized caving mining under the extremely thick aquifer is successfully realized. The high yield and high efficiency production of Hujiahe mine is ensured, and good economic and social benefits are obtained. The results of the project are of great significance for the follow-up production of various mines in Bingchang mining area.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.461;TD745

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