| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| Rock damage experiment and evaluation method by exploding wave |
|
JIANG Jin-bao1,2,LIN Ying-song1,3,ZHANG Bao-kang1,LIU Zhao-nian1,DING Yan-sheng3
|
|
(1. College of Petroleum Engineering in China University of Petroleum，Dongying 257061, Shandong Province, Chirm ;2. Drilling Research Institute, Zhongyuan Petroleum Exploration Bureau，Puyang 457001，Henan Province, China;3. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100081, China)
|
| Abstract: |
| The sample damage experiment by exploding wave in water, which is used to simulate the rock damage by exploding wave in reservoir，was carried out. The fractures distribution rule in sample was observed. The -exploding wave pressure was measured by self-made sensor, and the selected damage model was optimized. By treating and analyzing the elastic wave velocity data，the solution method for dynamic damage threshold was obtained. The results show that the rule of exploding wave propagation in sample accords with exponential damping，and a linear relationship exists among relative damage, the square of dimensionless elastic wave velocity and diraensioniess tensile stress. |
| Key words: exploding wave rock damage experimental research relative damage dimensionless wave velocity dimensionless tensile stress |
|
|