%0 Journal Article
%T EXPERIMENT ON DYNAMIC DAMAGE PROPERTY OF ROCK AND NEW DAMAGE MODEL FOR ROCK FRAGMENTATION BY BLASTING<br>岩石动态损伤特性实验及爆破模型
%A Yang Jun
%A Gao Wenxue
%A Jin Qiankun
%A <br>杨军
%A 高文学
%A 金乾坤
%J 岩石力学与工程学报
%D 2001
%I 
%X The new parameters for describing damage and its evolution in rock are explored to construct damage model of rock fragmentation by blasting. The shock induced damage experiments are carried out and the ultrasonic signals in the damaged rocks are measured. The results show that the shock induced damage of rock is related to the attenuation coefficient of sonic wave. Considering the relationship of the attenuation of wave and damage energy dissipation, a new rock damage model is developed for rock blasting. Comparing the experiment data of light gas gun with the simulating results by the new models, it is verified that the new model can better reveal the dynamic course of rock fragmentation by blasting.
%K rock blasting
%K damage model
%K dynamic loading
%K damage variation
%K sonic wave measurement
%K attenuation coefficient<br>岩石爆破
%K 损伤模型
%K 冲击载荷
%K 损伤演化
%K 声波测试
%K 衰减系数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=1B0B013B7BB6A94D&yid=14E7EF987E4155E6&vid=A04140E723CB732E&iid=38B194292C032A66&sid=CA9ED1AB4D9E3E04&eid=892C6E385D640C1E&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=20&reference_num=24