超高水材料袋式充填开采地表下沉特征研究

发布时间：2018-05-24 03:13

本文选题：超高水材料 + 袋式充填开采　；参考：《中国矿业大学》2017年硕士论文

【摘要】：近年来,随着煤炭资源越来越紧张,各地逐步扩大“三下”资源的开采规模,充填开采方法的应用越来越广泛。超高水材料含水量高、凝固速度快和强度高,具有良好的应用前景。本论文以冀中能源邯郸矿业集团超高水材料袋式充填开采为工程背景,综合运用现场调研、理论分析、相似模拟、数值模拟和现场实测等手段,重点对袋式充填开采地表下沉特征展开研究,主要工作成果如下:(1)结合邯郸矿区超高水材料充填开采地质条件及充填工艺,阐述了超高水材料充填开采的覆岩活动规律,系统分析了充填开采工作面需控围岩,研究了充填率、液压支架结构与性能、充填体强度等因素对袋式充填开采覆岩活动的影响,得到了充填率是影响地表下沉的关键要素。(2)采用模拟实验的方法,分析了超高水材料袋式充填开采不同充填率条件下,覆岩活动及地表下沉的变化规律,依据模拟分析的结果,计算袋式充填开采工作面的充填率,确定了袋式充填开采的最低充填率,提出了提高充填效果的保障措施及相关技术。(3)通过陶一矿12706超高水材料袋式充填开采工作面现场实测结果,验证了袋式充填开采地表沉降控制的可靠性,基于袋式充填开采地表下沉曲线,对地表移动参数进行了拟合,实测结果表明:在此条件下,袋式充填开采工作面的充填率不小于82%时,基本能够保证对地表建筑物的保护。
[Abstract]:In recent years, with the increasing shortage of coal resources, the mining scale of "three down" resources has been gradually expanded, and the filling mining method has been applied more and more widely. With high water content, high solidification speed and high strength, ultra-high water material has a good application prospect. This paper takes the bag filling mining of ultra-high water material in Handan Mining Group of Jizhong Energy as the engineering background, and synthetically applies field investigation, theoretical analysis, similarity simulation, numerical simulation and field measurement, etc. The characteristics of surface subsidence in bag filling mining are mainly studied. The main results are as follows: (1) combined with the geological conditions and filling technology of ultra-high water material filling in Handan mining area, the overlying rock activity law of ultra-high water material filling mining is expounded. The influence of filling rate, structure and performance of hydraulic support and strength of backfill on overburden activity of bag filling mining is studied systematically. It is obtained that filling rate is the key factor affecting the surface subsidence. By using the method of simulation experiment, the variation law of overlying rock activity and surface subsidence under different filling rates of bag filling mining with ultra-high water materials is analyzed, and the results of simulation analysis are used to analyze the change of overburden activity and surface subsidence. The filling rate of bag filling mining face is calculated, and the minimum filling rate of bag filling mining is determined. This paper puts forward the safeguard measures to improve the filling effect and related technology. (3) through the field measured results of 12706 ultra-high water material bag filling mining face in Taoyi Mine, the reliability of surface subsidence control in bag filling mining is verified. Based on the surface subsidence curve of bag filling mining, the surface movement parameters are fitted. The measured results show that under this condition, when the filling rate of bag filling mining face is not less than 82, it can basically ensure the protection of surface buildings.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD325.2

【参考文献】