充填综采面防止突水溃砂机理研究

发布时间：2018-06-28 11:50

本文选题：充填开采 + 绿色开采技术　；参考：《安徽建筑大学》2013年硕士论文

【摘要】：煤炭资源属于不可再生资源，随着经济的不断发展，煤炭资源不断被大量消耗，能源矛盾日益突出，如何提高资源回收率已成为亟需解决的问题。近些年，，煤矿安全事故频发，其中水灾害事故占有较大比重，对矿工的生命安全造成巨大威胁，给国家财产带来较大损失，且破坏了矿区的生态环境。充填开采方法是近年来刚刚兴起的绿色开采技术，充填开采的优势主要体现在两个方面，既能解决煤炭资源回收率低的问题，还能有效防止突水溃砂事故的发生，提高资源回收率和开采安全系数。因此具有广阔的发展应用前景。论文介绍了充填开采技术在国内外的发展状况、存在的问题及发展趋势后，简单介绍了目前我国正在实施的几种充填开采方法的工艺技术特点，总结了充填开采领域的理论体系发展概况。以五沟煤矿含水层下CT101充填开采工作面地质开采条件为工程背景，通过实验的手段，得到充填工作面上覆岩石的基本力学参数、微观结构以及充填材料的力学性能，分析了充填工作面上覆岩层的阻水性能和渗透性能；综合运用数值模拟、理论计算和现场实测等方法手段，通过对比分析充填开采方式和传统的垮落法开采方式两种不同开采方式对覆岩应力、位移和塑性区范围的影响，得出研究结论。分析结果表明：充填开采能够有效降低垮落带、裂隙带和弯曲下沉带的高度，有效防止突水溃砂事故的发生。
[Abstract]:The coal resources belong to the non-renewable resources. With the development of economy, the coal resources are constantly consumed and the contradiction of energy is becoming more and more serious. How to improve the recovery rate of coal resources has become a problem that needs to be solved urgently. In recent years, coal mine safety accidents occur frequently, in which water disaster accidents account for a large proportion, which pose a great threat to the safety of miners, bring great losses to national property, and destroy the ecological environment of mining areas. Filling mining method is a green mining technology which has just emerged in recent years. The advantages of filling mining are mainly reflected in two aspects. It can not only solve the problem of low recovery rate of coal resources, but also effectively prevent the occurrence of water bursting and sand bursting accident. Improve the recovery of resources and mining safety factor. Therefore, it has a broad prospect of development and application. This paper introduces the development of filling mining technology at home and abroad, the existing problems and development trends, and briefly introduces the technological characteristics of several filling mining methods that are being implemented in our country at present. The development of theoretical system in the field of filling mining is summarized. Taking the geological mining conditions of CT101 filling mining face under the aquifer of Wugou coal mine as engineering background, the basic mechanical parameters, microstructure and mechanical properties of filling materials are obtained by means of experiments. In this paper, the water resistance and permeability of overlying strata on the filling face are analyzed, and the methods of numerical simulation, theoretical calculation and field measurement are used synthetically. By comparing and analyzing the influence of two different mining methods on overburden stress, displacement and plastic zone, the research conclusions are drawn. The results show that filling mining can effectively reduce the height of collapse zone, fracture zone and bending subsidence zone, and effectively prevent the occurrence of water inrush and sand bursting accident.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD745;TD823.7

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