综采抛矸充填技术原理及抛沙试验研究
Principle of fully mechanized gangue-throwing filling technology and the sand-throwing test
吴玉意 1刘成勇 2张鹏 2刘文涛 2黄剑斌 2刘治成 2王翰秋3
作者信息
- 1. 中煤能源研究院有限责任公司, 陕西 西安 710054;中国矿业大学 矿业工程学院, 江苏 徐州 221116
- 2. 中煤能源研究院有限责任公司, 陕西 西安 710054
- 3. 中煤能源研究院有限责任公司, 陕西 西安 710054;河北工程大学 水利水电学院, 河北 邯郸 056038
- 折叠
摘要
目前矿山面临地表沉陷控制及固废处置难题,提出了一种"以抛代夯"的综采抛矸充填技术,基于抛矸充填技术原理,构建了抛矸运动数学模型,得到了抛矸充填基本参数.在此基础上,搭建了抛矸充填模拟平台进行现场抛沙实验,研究并分析了综采抛矸充填技术的可行性及参数的合理性.研究结果表明:①抛矸过程各参数实际测量值及变化规律与理论值较为接近,可以通过理论来指导现场设计;②当抛射倾角为50°,抛矸速度大于8 m/s时即可满足抛矸充填需求;③采用抛矸充填整体充填率可达95%以上,且矸石堆积角大小较自然堆积有明显提升,充填效果良好.
Abstract
In view of the difficulties in surface subsidence control and solid waste disposal in mines,a fully mechanized gangue-throwing filling technology of"throwing instead of tamping"was proposed.Based on the principle of gangue-throwing filling technology,the mathematical model of gangue-throwing movement was constructed,and the basic parameters of gangue filling were obtained.On this basis,a simulation platform for gangue-throwing backfilling was built to carry out on-site sand throwing tests,and the feasibility of fully mechanized mining gangue-throwing filling technology and the rationality of parameters were studied.The results show that:firstly,the measured values and variation rules of each parameter in the process of gangue-throwing are close to the theoretical values,the field design can be guided by theory;secondly,when the throwing angle is 50° and the throwing speed is greater than 8m/s,it can meet the filling demand;thirdly,the overall filling rate of gangue filling can exceed 95%,and the accumulation angle of gangue is obviously higher than that of natural accumulation,achieving favorable filling effect.
关键词
抛矸充填/固废处置/抛射参数/模拟试验Key words
gangue-throwing filling/solid waste disposal/throwing parameters/simulation test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据