单压下类岩材料有序多裂纹体的宏观力学性能

基金项目:

国家自然科学基金资助课题(No.49772090)

详细信息

Macro-mechanical Properties of Regular Cracks Body in Rock-like Materials under Uniaxial Compression

1. Applied Science School, UST Beijing, Beijing 100083, China;
2. Shanghai Institute of Tunnel, Shanghai 200233, China;
3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China

摘要: 用高强度白水泥及石膏等类岩材料有序多裂纹模型进行了大量单向加压实验,得出了单压时宏观等效强度σ_e,等效弹性模量E_e及泊松比μ_e随裂纹群倾角α的变化规律.在一定程度上考虑了裂纹密度对宏观力学性能的影响.综合实验结果与理论分析,给出了多裂纹体强度特征曲线σ_e-α.
- 多裂纹体 /
- 宏观等效 /
- 力学参数 /
- 强度特征
Abstract: A large number of experiments, research on the effects of regular cracks to macro-mechanical properties in rock like materials, such as high strength gypsum and white cement, under uniaxial compression are conducted. The experimental relationships of the macro-equivalent strength σ_e, elastic modulus E_e and passion's ratio μ_e versus the inclined angle of cracks α are obtained. The specificity curve of σ_e-α, also depending on cracks density h, for multi-crack body is given by the analysis of experimental and theoretical results. The data and conclusion will be useful for mining industry and some other underground engineering.
- multi-crack body /
- macro equivalent /
- mechanical parameter /
- strength specificity