软岩弹性模量的测定与讨论

本文首先介绍一种岩土自动化精密三轴压缩试验系统,并以此试验系统所得的一组实验结果为例,揭示软岩在微小应变(ε_1=10~(-2)—10~(-5))条件下所反应的应力-应变的线性关系,以及根据软岩在弹性范围内所测得的数据求出弹性模量。本文结合以往的研究成果,对软岩的弹性模量及变形系数开展分析和讨论。最后,本文将实验结果与现场测试结果相比较,从中了解两者之间的关系。

Determination and Discussion on Elastic Modulus of Soft Rock

A new kind of automatic precision test system of triaxial compression is introduced in this paper, then the relationships between stress and strain of soft rock are revealed from the tests by the above test system under the condition of small strain (below e_1=10~(-5) strain level) and the elastic modulus of soft rock can be obtained. Combined with the results of past researches, the analysis and discussion about the elastic modulus of soft rock are carried out. At last, the comparison of many kinds of results between the field tests and laboratory tests are performed, some relations between the two are found out.