原岩应力的理论分析及数值模拟

原岩应力对地下工程稳定性具有重要影响,是地下工程破坏和变形的根本作用力。数值模拟在岩土工程中已经广泛应用,而原岩应力会直接影响到模拟结果的准确性和合理性。由于原岩应力成因复杂,分布规律性差,所以成为研究地下工程稳定性首先要解决的一个问题。介绍了原岩应力的成因,从理论推导和数值模拟两方面对自重应力进行了分析研究,并且两者得到了一致的结果。

Theoretical analysis and numerical computation of in-situ rock stress

The in-situ rock stress has considerable influences on stability of underground mining, it is the source of rock failure and deformation. Numerical Computation has been widely applied in geotechnical engineering and the in-situ rock stress will directly influence the accuracy and reasonableness of simulated results. Due to the complexity of in-situ rock stress conditions and irregularity of distribution,in-situ rock stress becomes the first question to be solved when researching the stability of underground excavations. The paper introduces the cause of the in-situ rock stress. Theoretical derivation and numerical computation were conducted to analyze gravity stress and consistent results were obtained.