摘要
为有效进行相似模型实验,采用水泥、石膏和砂等原料模拟现场的灰岩特性,分别在室内进行了小试样配比试验,以及在室外进行了大样模拟试验,证明采用该模拟材料能较好地模拟原型灰岩的相关力学变形性能。同时利用声波仪,采用弹性波法检测了大样的横波波速与纵波波速,得出了大样的弹性模量和泊松比。根据试验数据,分别讨论了横波波速、纵波波速、抗压强度与抗弯强度相互之间的关系,给出了纵波波速与抗压强度之间的关系式,两者之间具有较好的相关性。
Similsr materials such as cement, gypsum and sand are used to simulate limestone characterize in order to do simulation testing efficiently. Not only a series of the proportion testing of small samples indoors but also a simulation testing of big samples outside have been done, it has been proved that the similar materials can simulate the mechanical characteristic of limestone. Applying ultrasonic, the velocities of transverse wave and vertical wave of similar samples have been inspected with the sound wave instrument. Elasticity modulus and Poisson＇s ratio of the samples have been deduced. According to testing data, the relationship between the transvense wave and vertical wave velocity, compressive strength and anti- bend strength are analyzed. The formula of relationship between vertical wave and compressive strength has been deduced. It has been proved that they have good relativity.
出处
《地下空间与工程学报》
CSCD
2005年第6期878-881,共4页
Chinese Journal of Underground Space and Engineering
关键词
灰岩
模拟材料
相似原理
弹性波
limestone
similar materials
similar theory
elastici wave
