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根据水动力学及土力学理论，采用室内和野外实验相结合的方法，对长江中上游花岗岩山地坡面进行了研究．认为坡度是决定坡面稳定的重要因素，提出了花岗岩山地坡面相对平衡坡度这一概念，并建立了山地坡面相对平衡坡度方程．实验得到坡面相对平衡坡度值为２６．３°，根据土力学原理实验得到坡面相对平衡坡度值为２４．９９°，结果十分相近．据此提出该地区花岗岩山地坡面相对平衡坡度值，为当地的坡地开发利用、水土保持、坡面工程设计及合理发展农林业生产提供科学依据
According to the theory of hydrodynamics and soil mechanics, the combination of indoor and field experiments was used to study the granite slope in the middle and upper reaches of the Yangtze River. It is considered that the slope is an important factor that determines the slope stability. The concept of relative equilibrium slope of the granite mountain slope is proposed, and the relative slope equation of slope is established. The relative slope value of the slope is 26.3 °. According to the experiment of soil mechanics, the relative slope value of the slope is 24.99 °. The results are very similar. Based on this, the relative slope value of granite mountain slope in this area is proposed to provide a scientific basis for the development and utilization of local slope land, soil and water conservation, slope engineering design and rational development of agriculture and forestry production