程来,周科平,李杰林.蚀变花岗岩物理力学特性试验研究[J].有色金属工程,2018,8(2):124-128.
蚀变花岗岩物理力学特性试验研究
Experimental research on altered granite of physical and mechanical properties
投稿时间:2016-11-17  最后修改时间:2017-01-05
DOI:10.3969/j.issn.2095-1744.2018.02.025
中文关键词:  岩石力学  蚀变花岗岩  强度  相关性
英文关键词:rock mechanics  altered granite  strength  correlation
基金项目:“十二五”国家科技支撑计划项目(2013BAB02B05);国家重大科学仪器设备开发专项(2013YQ17046310)
        
作者单位
程来 中南大学资源与安全工程学院 湖南长沙410083
周科平 中南大学资源与安全工程学院 湖南长沙410083
李杰林 中南大学资源与安全工程学院 湖南长沙410083
摘要点击次数: 193
全文下载次数: 
中文摘要:
      为研究蚀变花岗岩的强度特性,本文选取矿山井下开挖现场的岩样,对不同蚀变程度的岩样开展了矿物成分、孔隙度、耐崩解性、点荷载强度等一系列的室内试验,并进行了各物理参数与蚀变花岗岩强度的相关性分析,研究结果表明:1号岩样较2、3号岩样有更优良的物理力学性能;矿物成分中,石英和长石含量对1号岩样强度影响较大,绿泥石和蒙脱石含量对2号岩样强度影响较大;蚀变花岗岩强度随密度的增加呈线性增长;含水率、吸水率、孔隙度的增大会使强度降低,其值较小时,对蚀变花岗岩强度的影响较大;耐崩解系数的增大会使强度增强,其值较大时对强度影响较大。研究结果为进一步分析蚀变花岗岩的稳定性提供了试验基础。
英文摘要:
      In order to research the strength properties of altered granite rocks, the samples of mine underground excavation site was selected and the physical parameters of mineral composition, porosity, slake durability and point load strength were tested on those samples with different altered-degrees. Then the correlation between the physical parameters and the strength properties of altered granite rocks was analyzed. The results showed that the physical and mechanical properties of sample No.1 are better than samples No.2’s and No.3’s. Among the mineral compositions, quartz and feldspar have greater influence on the strength of sample No.1, while chlorite and montmorillonite have greater influences on the strength of samples No.2. The rock strength of altered granite increases linearly with the increase of the density, while the strength decreased with the increase of moisture content, water absorption and porosity. Greater effect was revealed on the rock strength when those parameter was in a lower values range.In another aspect, the increase of slake durability is beneficial to the rock strength, the effects on the strength would be more obvious when those parameter was in a higher value range. The results could provide experimental supports for further analysis of the stability of altered granite rocks.
查看全文  查看/发表评论  下载PDF阅读器
关闭