强膨胀性软岩的判别与分级标准  

DIFFERENTIATION AND GRADE CRITERION OF STRONG SWELLING SOFT ROCK

作　　者：孙小明[1] 武雄[2] 何满潮[1] 段庆伟[3] 

机构地区：[1]中国矿业大学(北京校区),北京100083 [2]中国地质大学(北京),北京100083 [3]中国水利水电科学研究院,北京100044

出　　处：《岩石力学与工程学报》2005年第1期128-132,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家杰出青年科学基金资助项目(59825114)

摘　　要：鉴于目前强膨胀性软岩判别和分级标准的研究处于初级阶段且其在实际工程中的重要性,在前人研究成果的基础上,结合具体工程实践和现场、室内实验结果,提出了软岩具有强膨胀性的最本质原因在于含有大量的强亲水性粘土矿物如蒙脱石和伊/蒙混层矿物等,在此基础上结合其他理化、力学指标提出了强膨胀性软岩的分级标准,并在现场工程实践中得到了很好的应用。Presently,the researches for differentiation and grade criterion of intense swelling soft rock are in primary phase with important application in practical engineering. On the basis of previous achievement,this paper presents the most essential matter of soft rock with strong swelling characteristics by combining engineering practice,field and laboratory experimentation results. The reason of strong swelling characteristics is that the soft rock contains plentiful high hydrophilicity clay mineral,such as illite / montmorillonite mixed-layer mineral. At the same time,the differentiation and grade criterion of strong swelling soft rock by combining physics,chemistry and mechanical index are fully discussed and the results prove to be successfully in the engineering practices.

关 键 词：岩石力学 强膨胀性软岩 判别标准 分级标准 

分 类 号：TU471.91[建筑科学—结构工程]