According to the design concept of pressure dispersed anchor cables

load distribution and effective compression anchorage length of pressure dispersed anchor cables of each unit body are tested under the effect of external load

so as to provide design reference for anchorage support design of anchor cables. In field test

the experimental anchor cables have the total length of 32 m

anchoring section’s length of 18 m which is divided into four segments; and have 200 mm diameter hole. By the method of installing micro strain sensor with high sensitivity at the position of anchoring section

load transfer law and distribution of anchoring section are obtained. Test results show that: each unit body of pressure dispersed anchor cables did not shared external load uniformly in accordance with the required standards of the existing regulation. With the increase of external load

load value which located at the position of the second unit body and the third unit body is significantly higher than the load value located at the position of the first unit body and the fourth unit body. The condition of anchoring section is not completely compressed; and the effective compressed anchoring length is also not equal

which the effective length of the first unit body

second unit body

third unit body and fourth unit body are respectively 1.9 m

2.9 m

2.8 m and 4.5 m. The distribution law of effective compressed anchoring length of each unit body is the first unit body the second unit bod the fourth unit body

and the effective compressed anchoring length of the second unit body is close to the third unit body.