As an efficient way to enhance the anchorage performance

anchorage underreaming is widely used in civil engineering. Several underreaming methods have been introduced. A new type of grouting-open soil anchorage with flukes is also presented. This anchor doesn’t need some specific tools to expand the bottom. Grouting pressure is efficiently utilized to expand the bottom and accomplish the grouting procedure consecutively. It has the advantage of convenient operation and high performance in practical use. Through the expansion experiment

it proves that it’s possible to stretch the flukes and expand the bottom with the use of grouting pressure in soft clay zone such as Shanghai.