复杂难采煤层综采工艺评价及设备选型

发布时间：2018-06-14 11:55

本文选题：复杂难采煤层 + 开采工艺　；参考：《安徽理工大学》2015年硕士论文

【摘要】：由于复杂难采煤层煤厚变化大、顶底板条件差,或含有夹矸,实现机械化开采困难,针对复杂难采煤层的特点。本文以淮南矿业集团张集煤矿16128工作面为工程背景,文章利用模糊综合评价对复杂难采煤层煤层地质条件进行了综采适应性评价,首先建立评价因素体系,构造和确定隶属函数、构造判断矩阵确定评价权重值,最后根据模糊综合评价模型提供的公式计算综采工艺适应性评价值。根据张集煤矿综采工艺适应性评价值,判定该工作面属于2级,开采条件较适宜,适合综采。文章紧接着对16128工作面设备选型进行了探讨,液压支架、采煤机、刮板输送机的选型原则进行了概述,在三机尺寸配套、性能配套、使用寿命配套等配套原则的基础上,对工作面成套设备进行了设备选型确定16128工作面液压支架、采煤机、刮板输送机等其他辅助设备。接着运用数值模拟软件FLAC3D研究了16128工作面采动过程中及工作面见方时垂直应力分布及塑性区范围等,得到16128工作面在推进过程中应力场、运移场的演化规律。在通过对现场观察,和对工作面液压实测工作阻力及其分布区间进行研究分析,得出了工作面初次垮落、初次来压步距、周期来压步距等矿压显现规律。综合研究结果,作为张集煤矿8煤的首采工作面,16128工作面的成功开采对整个8煤乃至西三采区的安全高效开采提供了理论依据和技术指导,为同类复杂难采煤层的开采累积了宝贵的经验。
[Abstract]:It is difficult to realize mechanized mining because of the big change of coal thickness, poor roof and floor condition, or containing gangue in complex and difficult coal seam, aiming at the characteristics of complex and difficult coal seam. Taking Zhangji 16128 face of Huainan Mining Group as the engineering background, this paper uses fuzzy comprehensive evaluation to evaluate the comprehensive mining adaptability of complex and difficult coal seam. Firstly, the evaluation factor system is established. The membership function is constructed and determined, the evaluation weight is determined by constructing the judgment matrix, and the evaluation value of the adaptability of fully mechanized coal mining process is calculated according to the formula provided by the fuzzy comprehensive evaluation model. According to the evaluation value of fully mechanized coal mining technology in Zhangji coal mine, it is determined that the working face belongs to the second grade, and the mining conditions are suitable for fully mechanized coal mining. The article then discusses the equipment selection of 16128 working face, and summarizes the selection principles of hydraulic support, shearer and scraper conveyer, on the basis of the supporting principles of three machine size matching, performance matching, service life matching and so on. The equipment type selection of the complete equipment in the working face is carried out. 16128 working face hydraulic support, shearer, scraper conveyer and other auxiliary equipments are determined. Then using numerical simulation software FLAC3D, the vertical stress distribution and plastic zone range in the mining process of 16128 face and when the face is square are studied, and the evolution rules of stress field and migration field in 16128 face are obtained. Based on the field observation and the study and analysis of the working resistance and distribution interval of the hydraulic pressure in the working face, the rules of the rock pressure appearance such as the first collapse of the face, the first pressure step, the periodic pressure step distance, and so on are obtained. The comprehensive research results show that the successful mining of No. 8 coal face No. 8 in Zhangji Coal Mine provides a theoretical basis and technical guidance for the safe and efficient mining of the whole No. 8 coal mining area and even the third mining area in the west. It has accumulated valuable experience for the mining of similar complex and difficult coal seam.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD823.97

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