双截面应变测试法及其在接杆凿岩中的应用  

THE METHOD OF TWO SECTION STRAIN MEASUREMENT AND IT′S APPLICATION TO PERCUSSIVE DRILLING WITH JOINTS

作　　者：单仁亮[1] 王树仁[1] 王海啸[1] 

机构地区：[1]中国矿业大学北京研究生部

出　　处：《煤炭学报》1996年第6期602-606,共5页Journal of China Coal Society

基　　金：国家自然科学基金;煤炭科学基金

摘　　要：根据一维波动方程推导了双截面应变测试法测试一维杆中任一截面的应变和质点速度方程以及顺波和逆波方程；并成功地将其用于钎杆接头动力特性的量测，得到了较长的入射波在短接杆中传播时遇到接头后的反射波以及能量反射率。Based on one dimensional elastic equation, the identities are derived, in which the strain and particle velocity at any section are related to strain at two sections. And equations for waves travelling in the positive and negative directions are also derived. The method is used to test the dynamic characteristics of drill rod joints with success. The reflected wave from the joint when a long incident wave propagates in a short rod is obtained and other important parameters, such as energy reflectance, dissipation rate are calculated.

关 键 词：弹性波 应变量测 钎杆接头 接杆 凿岩 

分 类 号：TD421.25[矿业工程—矿山机电] TD231.6