粘土岩的比表面积研究分析  

Research of specific surface area for Clay rock

作　　者：车申[1] 

机构地区：[1]东华理工大学地球科学学院

出　　处：《中国粉体工业》2011年第3期7-10,共4页China Powder Industry

摘　　要：粘土岩作为高放废物地质处置的良好围岩之一,其可行性日益受到各国的青睐。其力学性质、渗透性以及流变性等宏观性能与颗粒的比表面积及表面电荷性质等微观结构密切相关。因而,比表面积测试对分析极细颗粒土的力学性质、渗透性以及流变性等具有重要作用。本文采用氮吸附（BET）法分别对甘肃陇东地区的粘土岩的比表面积进行测试和分析。比表面积测试结果表明,其比表面都在10m^2/g以上,且小于25m^2/g;文中的比表面积测试和分析对深入了解影响粘土的渗流固结与流变性等物理机制具有指导意义,从而为核废料的地质处置提供依据。As one of the Rood wall rock in high-level radioactive waste geological disposal,clay rock has pushed into the spotlight increasingly by many countries in its feasibility.There is a close relationship between microscopic characteristics （such as specific surface area,surface charge properties）and macroscopic properties（such as mechanics property,permeability and rheology）of clay rock.Thus,the specific surface area （short for SSA） test is vital important to analyse mechanics property,permeability and theology of clay rock.In this article,we use BET method to test some kinds of the SSA in Longdon,Gansu province respectively.And the SSA test suggest that all the SSA results are above10m^2/g,and below 25m^2/g. The SSA test and analysis are significant to dcep-going understand the clay rock＇s mechanics of permeability and rheology.And it will provide scientific data to geological disposal of HLW.

关 键 词：粘土岩 BET法 比表面积 

分 类 号：TL942.1[核科学技术—辐射防护及环境保护]