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赤平投影法是对岩石块体进行定性评价的重要方法之一。本文介绍了赤平投影法的基本原理,并采用空间向量法建立了计算结构面空间组合参数的方程,结合实际工程对边坡进行了计算评价。分析表明赤平投影法在岩石边坡稳定性分析中具有原理明确,计算参数容易获取等优点,采用空间向量方程编制计算机程序可以大大提高稳定性评价计算速度,降低计算工作量。该方法适合对峡谷岸坡稳定性进行快速评价,同时对工程施工过程中,避开人工开挖形成危险方位的临空面起到科学指导作用。
Stereographic projection method is one of the important methods for qualitative evaluation of rock blocks. This paper introduces the basic principle of the stereoprojection method, and uses the space vector method to establish the equations to calculate the space combination parameters of the structural plane, and calculates and evaluates the slope with the actual project. The analysis shows that the stereographic projection method has the advantages of clear principle and easy calculation of parameters in the stability analysis of rock slopes. Compiling the computer program by using space vector equation can greatly improve the stability of calculation and reduce the computational workload. The method is suitable for the rapid assessment of the stability of canyon bank slope, and plays a scientific guiding role in avoiding the excavation of the casual face with dangerous azimuth during construction.