| 大理石板中心受压时的破裂形式及破裂传播速度的实验研究 |
| |
| 引用本文： | 许昭永,彭万里.大理石板中心受压时的破裂形式及破裂传播速度的实验研究[J].地震地质,1983,5(1):53. |
| |
| 作者姓名： | 许昭永 彭万里 |
| |
| 作者单位： | 云南省地震局
(许昭永)，云南省地震局(彭万里) |
| |
| 摘 要： | 本文叙述大理石板中心受压时的破裂形式及破裂传播速度:1.主破裂走向与大理石纹理多数成45°角,少数近似平行,破裂时总是一侧先断通;破裂前存在剪应变,主破裂方向不一定与最弱张裂面一致;2.1gV—L图表明:始发段,刚出现裂纹时,V较大(约10毫米/秒),随L增大,V急剧减小(约0.05毫米/秒);缓裂段,随L增大,V起伏式缓慢增长(0.1—2毫米/秒);速裂段,过一明显转折点后,随L增大,V急剧增长(约1米/秒),破裂发生
|
| 关 键 词： | 主破裂 大理石板 破裂传播 破裂形式 中心受压 破裂速度 主裂纹 纹理方向 实验研究 张裂 |
EXPERIMENTAL STUDIES OF THE FRACTURE MODE AND VELOCITYFFOR THE CENTER OF MARBLE SLAB UNDER THE STRESS LOADING |
| |
| Abstract: | The fracture mode and velocity for the center of marble slab under the stress loading were studied in the experiment. The results are as follows.1. Most cracks cross veins at an angle of about 45° and some nearly 0°. Failures of the rock usually occurred at different time, with one of the cracks first going through the slab. There was shear strain before failure. The direction of the main fracture was in disagreement with the surface of minimum tensile strength. The hydraulic fracturing directio |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
