高岭石软岩吸水尺度效应试验研究  

Experimental Research on Scale Effect for Absorption of Soft Rock with High Kaolinite Content

作　　者：连清旺[1] 柴肇云[1] 

机构地区：[1]太原理工大学采矿工艺研究所,山西太原030024

出　　处：《矿业研究与开发》2011年第6期53-55,共3页Mining Research and Development

基　　金：国家自然科学基金资助项目(51004075);博士后科学基金项目(20110491631);山西省自然科学基金项目(2011021024-2)

摘　　要：通过对以高岭石含量为主软岩块体自然吸水率的对比试验,研究了不同尺度软岩块体泡水不同时间以及经历不同干湿循环次数后块体吸水率的变化规律,并就其吸水差异性进行了探讨。研究结果表明:随着泡水时间的增加,高岭石软岩吸水率呈负指数关系增加,在泡水初期增速较大,随后逐渐变缓,并趋于稳定;软岩吸水具有明显的尺度效应,饱和吸水率随块体尺度的增加而降低,并趋于一个稳定值;随着干湿循环次数的增多,岩样块体的饱和吸水率增大,增速逐渐变缓,并趋向于某一恒定值。Based on the natural absorption comparison tests of soft rocks block with high kaolinite content,the variation rules of absorption of soft rock block for different size,immerse time and undergo drying-wetting cyclic times are studied,and its absorption difference is discussed.Some conclusions are drawn from these experiments as follows： the absorption of rock samples increased in negative exponent with the increasement of immerse time,increased rates of absorption was greater in immerse initial stages,followed slowing down gradually,and tended to get constant;scale effect in evident for water absorb of soft rock,saturation absorption of soft rock decreased with the increasement of block size,and tended to get constant;saturation absorption of soft rock block increased and increased rates slowed down gradually with the increasement of drying-wetting cyclic times,and tended to get constant.

关 键 词：高岭石软岩 吸水性 尺度效应 干湿循环 

分 类 号：TD315[矿业工程—矿井建设]