用双截面应变量测方法研究岩石冲击凿入特性  

Research on Rock Penetration Properties from Two-Section Strain Measurement on Drilling Rod

作　　者：单仁亮[1] 王海啸[1] 王树仁[1] 陶龙光[1] 

机构地区：[1]中国矿业大学北京研究生部

出　　处：《实验力学》1997年第4期572-578,共7页Journal of Experimental Mechanics

基　　金：国家自然科学基金

摘　　要：在一维细长杆中，通过任意不重合的两个截面处的应变测试，就可以计算出杆中任一截面处的应变和质点速度等物理量，并且可以分离出顺波和逆波。本文不但在实验上和理论上对该方法进行了证明，而且成功的将其用于岩石冲击凿入特性的研究。In this paper it is shown that for a slender bar subjected to longitudinal impact, physical parameters such as longitudinal strain and particle velocity at any cross section of the bar can be determined by computation from the recorded strains at two arbitrary noncoincided sections, and the waves propagating in the positive and negative directions of the bar respectively can also be recognized. Based on this principle, the penetrationresistance characterestics for the rock under percussive drilling is studied experimentally. Some meaningful results are obtained.

关 键 词：应力波 应变量测 岩石破碎 冲击凿入 

分 类 号：TD315[矿业工程—矿井建设]