溶蚀作用下含泥质石膏岩强度特性试验研究  

Experimental Study on Strength Characteristic of Argillaceous Gypsum Rock under Corrosion

作　　者：何潇 周建伟 HE Xiao;ZHOU Jianwei(Chengdu Surveying Geotechnical Research Institute Co.,Ltd.of MCC,Chengdu 610023,Sichuan,China)

机构地区：[1]中冶成都勘察研究总院有限公司,四川成都610023

出　　处：《工程技术研究》2024年第23期102-104,共3页Engineering and Technological Research

基　　金：四川省科技计划资助项目(四川省自然科学基金2023NS FSC0787)。

摘　　要：为探讨溶蚀作用影响下含泥质石膏岩的强度特性,文章制备多个含泥质石膏岩试样,并利用酸性溶液溶蚀处理石膏岩试样,处理后进行单轴压缩试验,试验中观察溶蚀前后试样微观结构及单轴抗压强度的变化,分析溶蚀作用下含泥质石膏岩的强度特性。试验结果表明,溶蚀作用通过提升孔隙率和削弱矿物间的结合力,改变了含泥质石膏岩的微观结构特征;随着溶蚀时间的延长,含泥质石膏岩的单轴抗压强度显著下降,说明在溶蚀作用下,含泥质石膏岩的强度特性显著削弱。In order to explore the strength characteristics of argillaceous gypsum rock under the influence of corrosion,several argillaceous gypsum rock samples are prepared,and the gypsum rock samples are treated by acidic solution corrosion.The uniaxial compressive test is carried out after treatment.The changes of microstructure and uniaxial compressive strength of the samples before and after corrosion are observed,and the strength characteristics of argillaceous gypsum rock under corrosion are analyzed.The test results show that the corrosion changes the microstructure characteristics of argillaceous gypsum rock by increasing porosity and weakening the bonding force between minerals;with the extension of corrosion time,the uniaxial compressive strength of argillaceous gypsum rock decreases significantly,indicating that the strength characteristics of argillaceous gypsum rock are significantly weakened under corrosion.

关 键 词：溶蚀作用 含泥质石膏岩 单轴压缩试验 微观结构 单轴抗压强度 

分 类 号：TD327[矿业工程—矿井建设]