基于Feflow的范各庄煤矿矿井涌水量预测研究
发布时间：2019-03-01 08:43
【摘要】：矿井涌水量预测对于煤矿防排水系统的设计以及突水事故的预防具有重要意义,是煤矿安全生产的保障。煤矿的安全开采是以各个生产指标作为评定标准的,其直接影响煤矿开采的总体布局,涌水量作为其中重要的组成部参数,越来越受到重视。现有的涌水量预测方法多种多样,近几年来,其中的数值模拟法得到了工作者的广泛认可。伴随着计算机水平的迅猛发展,各种软件层出不穷,德国的Feflow软件在国内外凭借其优秀的数据处理、便捷的参数调整和丰富的图像显示能力得到了广大水文地质工作者的青睐。本文基于Feflow软件模拟预测矿井涌水,通过全面的软件介绍,深入应用于煤矿地下水的预测中,取得了以下研究成果。包括有:(1)总结数值模拟以及矿井涌水量预测国内外的研究现状,对比现存不同地下水模拟软件的优缺点,全面分析Feflow软件的输入、输出、求解的功能和特点以及在矿井涌水预测中的适用性。(2)通过一个已知解析解的1400m*1400m矩形和45°扇形理想含水层抽水模型,将Feflow软件模拟结果与已知结果进行对比,验证Feflow软件模拟的准确性。(3)研究矿区实际水文地质情况,详细分析应用Feflow软件开展数值模拟计算时所需的参数,结合Autocad、Arcgis、Sufer、office等软件进行大量数据处理与概化。(4)应用Feflow软件对范各庄矿全矿及其第四层含水层单层进行数值模拟,将模拟结果进行多次运行、识别、调参,并拟合水文观测孔的水位数据,最后应用二维或三维图、趋势表进行显示。(5)将数值模拟结果与实际观测孔数据拟合,探讨模拟误差产生的原因。通过拟合全矿地下水流场,分析了矿井涌水量的组成。通过第四层含水层的模拟,观测孔水位误差仅仅2.8%和5.2%,效果良好。预测2017年的地下流场符合实际情况,水位下降趋势与2016年相同;模拟预测5年后(2020年)12-14煤含水层地下水流场变化趋势,根据模拟结果预测2020年12煤-14煤含水层(第四含水层)涌水量为14.14 m3/min。(6)分析误差来源于资料准确性与全面性,网格划分赋值产生的不确定性等。充分分析软件特点以及模拟数据,总结出Feflow在矿井涌水量预测中具有调参简捷,后处理能力强、显示效果好等特点,具有其他软件所不具备的成图优势。软件对于模拟地下水流场及运动趋势效果良好,但是对于涌水量等定量预测依然存在不小难度,包括需要进行大量的高精度原始数据的收集等方面。
[Abstract]:The prediction of mine water inflow is of great significance to the design of water prevention and drainage system in coal mine and the prevention of water inrush accident. It is the guarantee of safe production in coal mine. Coal mine safety mining is based on each production index as the evaluation standard, which directly affects the overall layout of coal mining, inrush water as one of the important component parameters, more and more attention has been paid to it. In recent years, the numerical simulation method has been widely recognized by workers. With the rapid development of computer level, various kinds of software emerge one after another. With its excellent data processing, convenient parameter adjustment and rich image display ability, German Feflow software has been favored by the majority of hydrogeologists at home and abroad. This paper is based on the Feflow software to simulate and predict the mine gushing water. Through the introduction of the comprehensive software, it has been deeply applied to the prediction of underground water in coal mines, and the following research results have been obtained. It includes: (1) summarize the research status of numerical simulation and mine water inflow prediction at home and abroad, compare the advantages and disadvantages of the existing different groundwater simulation software, and analyze the input and output of Feflow software in an all-round way. The function and characteristics of the solution and its applicability in the prediction of mine gushing are discussed. (2) through a 1400m*1400m rectangular and 45 掳fan-shaped ideal aquifer pumping model with known analytical solution, the simulation results of Feflow software are compared with the known results. Verify the accuracy of Feflow software simulation. (3) study the actual hydrogeological situation of mining area, analyze in detail the parameters needed to carry out numerical simulation with Feflow software, and combine with Autocad,Arcgis,Sufer,. Office and other software are used to process and generalize a lot of data. (4) Feflow software is used to simulate the whole mine and the single layer of the fourth aquifer in Fangezhuang Mine, and the simulation results are run, identified and adjusted for many times. Finally, two-dimensional or three-dimensional diagrams and trend tables should be used to display the water level data of hydrologic observation holes. (5) the numerical simulation results are fitted with the actual observation hole data, and the causes of simulation errors are discussed. By fitting the groundwater flow field of the whole mine, the composition of mine water inflow is analyzed. Through the simulation of the fourth aquifer, the error of the observation hole water level is only 2.8% and 5.2%, and the effect is good. The prediction of the underground flow field in 2017 accords with the actual situation, and the downward trend of water level is the same as in 2016; The variation trend of groundwater flow field in 12-14 coal aquifer after 5 years (2020) is simulated and predicted. According to the simulation results, the water inflow of the 12-14 coal aquifer (the fourth aquifer) in 2020 is predicted to be 14.14 m3 / min. (6) the analysis error comes from the accuracy and comprehensiveness of the data, the uncertainty of the grid assignment and so on. By fully analyzing the characteristics of the software and the simulated data, it is concluded that Feflow has the advantages of simple adjustment of parameters, strong post-processing ability and good display effect in the prediction of mine water inflow, and has the advantages of drawing which other software does not have. The software has a good effect on simulating groundwater flow field and movement trend, but there are still some difficulties in quantitative prediction such as water inrush, including the need to collect a large number of high-precision raw data.
【学位授予单位】：华北科技学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD742
[Abstract]:The prediction of mine water inflow is of great significance to the design of water prevention and drainage system in coal mine and the prevention of water inrush accident. It is the guarantee of safe production in coal mine. Coal mine safety mining is based on each production index as the evaluation standard, which directly affects the overall layout of coal mining, inrush water as one of the important component parameters, more and more attention has been paid to it. In recent years, the numerical simulation method has been widely recognized by workers. With the rapid development of computer level, various kinds of software emerge one after another. With its excellent data processing, convenient parameter adjustment and rich image display ability, German Feflow software has been favored by the majority of hydrogeologists at home and abroad. This paper is based on the Feflow software to simulate and predict the mine gushing water. Through the introduction of the comprehensive software, it has been deeply applied to the prediction of underground water in coal mines, and the following research results have been obtained. It includes: (1) summarize the research status of numerical simulation and mine water inflow prediction at home and abroad, compare the advantages and disadvantages of the existing different groundwater simulation software, and analyze the input and output of Feflow software in an all-round way. The function and characteristics of the solution and its applicability in the prediction of mine gushing are discussed. (2) through a 1400m*1400m rectangular and 45 掳fan-shaped ideal aquifer pumping model with known analytical solution, the simulation results of Feflow software are compared with the known results. Verify the accuracy of Feflow software simulation. (3) study the actual hydrogeological situation of mining area, analyze in detail the parameters needed to carry out numerical simulation with Feflow software, and combine with Autocad,Arcgis,Sufer,. Office and other software are used to process and generalize a lot of data. (4) Feflow software is used to simulate the whole mine and the single layer of the fourth aquifer in Fangezhuang Mine, and the simulation results are run, identified and adjusted for many times. Finally, two-dimensional or three-dimensional diagrams and trend tables should be used to display the water level data of hydrologic observation holes. (5) the numerical simulation results are fitted with the actual observation hole data, and the causes of simulation errors are discussed. By fitting the groundwater flow field of the whole mine, the composition of mine water inflow is analyzed. Through the simulation of the fourth aquifer, the error of the observation hole water level is only 2.8% and 5.2%, and the effect is good. The prediction of the underground flow field in 2017 accords with the actual situation, and the downward trend of water level is the same as in 2016; The variation trend of groundwater flow field in 12-14 coal aquifer after 5 years (2020) is simulated and predicted. According to the simulation results, the water inflow of the 12-14 coal aquifer (the fourth aquifer) in 2020 is predicted to be 14.14 m3 / min. (6) the analysis error comes from the accuracy and comprehensiveness of the data, the uncertainty of the grid assignment and so on. By fully analyzing the characteristics of the software and the simulated data, it is concluded that Feflow has the advantages of simple adjustment of parameters, strong post-processing ability and good display effect in the prediction of mine water inflow, and has the advantages of drawing which other software does not have. The software has a good effect on simulating groundwater flow field and movement trend, but there are still some difficulties in quantitative prediction such as water inrush, including the need to collect a large number of high-precision raw data.
【学位授予单位】：华北科技学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD742
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