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国内一般测定土样的各向渗透系数时,常用几个环刀切取不同方向的试样,分别求得各个方向的渗透系数,往往由于试样容重及结构不同,所得结果不好比较。本文设计了一套各向渗透仪,用单向透水盒将试样封闭于其内,再利用橡皮膜将四周封闭,只留出需要测定渗透系数的方向,利用一般设备即可求出渗透系数。作完一个方向,将试样旋转90°求另一方向的渗透系数。方法简便,设备简单,结果可靠。
When measuring the average permeability coefficient of soil samples in China, several ring knives are often used to cut the specimens in different directions to obtain the permeability coefficients in all directions. The results are not always good due to the different sample weight and structure. In this paper, we designed a set of permeation instrument, using a one-way permeable box to seal the sample inside, and then use the rubber membrane will be closed around, leaving only the need to determine the direction of the permeability coefficient, the use of general equipment to find the permeability coefficient . Make a direction, the sample is rotated 90 ° to find the permeability coefficient in the other direction. The method is simple, the equipment is simple and the result is reliable.