高温后大理岩在不同应力水平下超声波特性的实验研究

Experimental Research on Ultrasonic Characteristic of Marble under the Action of High Temperature

对 1 0 0～ 80 0°C温度的大理岩在不同应力水平作用下进行超声波传播特性的实验研究 .采用分组单独加温后 ,利用压力超声探头在 RMT- 1 5 0 B型刚性岩石实验机上直接测定声波特性参数的方法 ,取得了 0～ 60 k N荷载范围内的大理岩纵波波速 vp 随温度 θ变化的有效实验数据 .在统计分析的基础上 ,进一步探讨了大理岩的 vp- θ特性以及影响大理岩 vp-

The ultrasonic characteristic of marble was studied under high temperature and different load by experiment. The samples were heated under the temperature set 100～800 (°C) for ultrasonic (testing). Effectual experiments of ultrasonic velocity changing with high temperature were obtained under the (loading) 0～60 kN by using RMT-150B rigid rock testing system and ultrasonic pressure sensor.In (addition,)v_p-θ relation of marble and its influent factors were discussed based on the experiments. The (results) are of reference value to classify the (rock) and other geology engineering by means of ultrasonic (testing) method.