| 岩体原地承载能力评价方法初步研究 |
| |
| 引用本文： | 李 宏,刘凤秋,董建业,孙启伟.岩体原地承载能力评价方法初步研究[J].岩土力学,2006,27(Z2):71-74. |
| |
| 作者姓名： | 李 宏 刘凤秋 董建业 孙启伟 |
| |
| 作者单位： | 中国地震局地壳应力研究所，北京 100085 |
| |
| 摘 要： | 有效评价岩体的原地承载能力，对于水电工程设计和安全运行是非常重要的。结合现场实测资料对岩体的原地承载能力评价方法进行了分析研究，提出了具有明确物理意义的评价岩体在长期高水头作用下原地承载能力试验方法，对水力劈裂和单压力点压水试验的原理、方法进行了论述。从理论上讨论了岩体原地承载能力与地应力、孔隙压力的关系，探讨了岩体原地承载能力的时间效应及其影响。依据裂隙面正应力和孔隙压力的影响，给出了岩体的原地承载能力取值范围。
|
| 关 键 词： | 原地承载能力 岩体 水力劈裂 地应力 孔隙压力 |
| 收稿时间： | 2006-06-30 |
Preliminary study on evaluation method of
in-situ bearing capacity of rock-mass |
| |
| LI Hong,LIU Feng-qiu,DONG Jian-ye,SUN Qi-wei.Preliminary study on evaluation method of
in-situ bearing capacity of rock-mass[J].Rock and Soil Mechanics,2006,27(Z2):71-74. |
| |
| Authors: | LI Hong LIU Feng-qiu DONG Jian-ye SUN Qi-wei |
| |
| Institution: | Institute of Crustal Dynamics, China Earthquake Adminstration, Beijing 10008, China |
| |
| Abstract: | It is important to evaluate the in-situ bearing capacity of rock-mass effectively for the design and running in safety of hydro-engineering. Based on the measurement data, the evaluation method of in-situ bearing capacity of rock-mass has been studied. The evaluation method of in-situ bearing capacity of rock-mass in long term high hydraulic head is prsented with definite physical meaning. The method and theory of hydraulic fracturing and one step water pressure test are also discussed. The relation of in-situ bearing capacity of rock-mass, in-situ stresses and pore pressure has been studied. The time-effect and its influence of in-situ bearing capacity of rock-mass is discussed. The value range of in-situ bearing capacity of rock-mass is proposed depend on the effect of fracture normal stress and pore pressure. |
| |
| Keywords: | in-situ bearing capacity rock-mass hydraulic fracturing in-situ stress pore pressure |
|
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
