Practical Approach to Predicting the K₀ Behavior of In Situ Sandy Gravel

Figure 1

Sketch map of test equipment. (a) Sketch map of the apparatus. (b) Photo of the apparatus. (c) Top view of the apparatus (1, base; 2, baseplate; 3, load sensor; 4, steel ball; 5, the bottom force transmission plate; 6, semicircle rigid cylinders; 7, the top force transmission plate; 8, pressure plate; 9, compression plate; 10, pull pressure sensor; 11, displacement sensor; 12, load sensor; 13, loading frame; 14, load cylinder).

(a)

(b)

(c)