实验证明用组合墙体可以改变土的破坏棱体。这样,不仅能使对墙体的朗金土压力减小二分之一,而且可以利用土压力作用方向的不同来相互平衡,从而使挡土墙的圬工用量有较大的减少。 Experiments show that with the combination of wall can change the soil damage prism. In this way, not only can the pressure on the wall of the Longjin soil be reduced by one half, but also the different directions of the earth pressure can be used to balance each other, so that the amount of slamming walls is greatly reduced.