摘要
为了探究废弃矿井地下空间的可利用性和可扩性,通过压实实验,分析了相同岩性不同粒径,相同粒径不同岩性的压力与压缩高度关系,研究了泥岩、砂质泥岩和细砂岩以及饱水岩石的残余碎胀与压实特征。结果表明:在级配相同的条件下,岩石强度越大,压缩高度越小,岩石强度与压缩高度呈负相关;在其他条件相同的前提下,破碎岩石碎胀系数和残余碎胀系数降幅随粒径的增大而增大,泥岩、砂质泥岩和细砂岩的碎胀系数分别从1.804、2.041、1.889增加至2.191、2.405、2.396,残余碎胀系数降幅从31.0%、31.3%、28.0%增加至39.3%、38.6%、37.7%,残余碎胀系数降幅越大,变形也较大,越易被压实;与自然岩石相比,饱水岩石压缩高度较大,碎胀系数降幅更明显,更易被压实。
This paper aims to study the usability and expandability of the underground space in abandoned mines.The study involves analyzing the relationship between pressure and compression height of the same rock type but different particle sizes,and the same particle size but different rock types through compaction experiments,and investigating the residual fragmentation and compaction characteristics of the mudstone,the sandy mudstone,the fine sandstone and the saturated rock.The results show that under the same grading conditions,the greater the rock strength is,the smaller the compression height presents,suggesting that the rock strength is negatively correlated with the compression height.Under the other same conditions,the decrease in fragmentation coefficient and residual fragmentation coefficient of fractured rocks increases with the increase of particle size.The fragmentation coefficients of mudstone,sandy mudstone,and fine sandstone increase from 1.804,2.041 and 1.889 to 2.191,2.405 and 2.396,respectively.The decrease in residual fragmentation coefficient increases from 31.0%,31.3%and 28.0%to 39.3%,38.6%and 37.7%,respectively,suggesting that the greater the decrease in residual fragmentation coefficient is,the greater the deformation is,and the easier it is to compact.Compared with natural rocks,the saturated rocks have a higher compression height,a more significant decrease in fragmentation coefficient,and are easier to compact.
作者
康健
仝宇亮
刘思瑞
Kang Jian;Tong Yuliang;Liu Sirui(School of Mining Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)
出处
《黑龙江科技大学学报》
2025年第3期354-359,共6页
Journal of Heilongjiang University of Science And Technology
基金
黑龙江省重点研发计划项目(GA23C001)。
关键词
废弃矿井
承压岩石
残余碎胀
压实特征
abandoned mine
confined rock
residual crushing
compaction characteristics
作者简介
第一作者:康健(1973-),男,蒙古族,内蒙古自治区赤峰人,教授,博士,研究方向:矿山固废资源化利用,E-mail:kangjian94@126.com。
