摘要
为有效控制采动覆岩破坏并保护地表环境及建筑设施安全,对现有超高水材料充填系统进行优化应用研究。理论分析超高水材料充填的地表减沉效果,针对现有充填系统工艺的不足,设计研发高速涡流制浆系统,建立流量匹配模型实现浆液流量的自适应匹配;将优化后的充填系统应用于某超高水材料充填工作面,从不同取样地点充填体试样强度对比和充填区地表下沉量2方面进行效果检验。结果表明:优化后的充填系统制浆所需时间为原有系统的1/4,不同取样处充填体试样的强度误差小于5%,制浆效果稳定;区域地表平均下沉量约78 mm,在Ⅰ级破坏之内,充填减沉效果良好。
In order to effectively control overburden fractures due to coal mining,and protect the surface environments and building facilities,the optimized application of the current super-high water material filling system was studied.Firstly,the effects of surface subsidence reduction by filling with super-high water materials were analyzed.Then according to the shortcomings of the existing filling system technology,the high-speed eddy current pulping system was designed and developed,and the adaptive matching of slurry flow was realized by establishing flow matching model.The optimized filling system was applied to a working face that was filled with super-high water materials.The effects were tested from the strength of filling samples obtained from different sampling sites and the surface subsidence reduction of filling area.The results show that the pulping time the optimized filling system needs is just one-fourth of that the original system requires,that the strength error of filling body samples in different sampling sites is less than 5%,so the pulping effect is stable,and that the amount of surface subsidence is about 78 mm,within theⅠdegree damage,which shows that the optimized system has good effect in decreasing ground subsidence.
作者
王?
熊祖强
张耀辉
赵高博
孙如意
WANG Yan;XIONG Zuqiang;ZHANG Yaohui;ZHAO Gaobo;SUN Ruyi(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;Henan Collaborative Innovation Center of Coal Work Safety,Jiaozuo Henan 454003,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu Sichuan 610059,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2019年第4期112-119,共8页
China Safety Science Journal
基金
河南省高校科技创新团队和创新人才支持计划(17HASTIT032)
河南省创新科技团队支持计划(CXTD2017088)
关键词
充填开采
超高水材料充填系统
地表减沉
高速制浆
流量自适应匹配
backfill mining
super-high water material filling system
reducing surface subsidence
high speed pulping
flow adaptive matching
