DEVELOPMENT OF THE FIBER REINFORCED CABLE BOLTS AND ITS FUNDAMENTAL PROPERTIES

Abstract

Fiber reinforced cable bolt is one of the capable and powerful supporting measure. However there are many difficulties to product the suitable characteristic fiber cable bolts, because it is hard to form a fiber bundle into the cable shape. Kumihimo Method is old fashioned Japanese fiber twisting method, but it is also suitable in modern days.
In this paper we introduced the new branded fiber cable bolts adopting the Kumihimo Method and a lot of experiments has been carried out to reveal a fundamental properties of this fiber cable bolts comparing with the steel one. As a result, it became clear that fiber cable bolts has the reliable strength as tension, shearing and frictional properties. Especially frictional strength is higher than steel one. We suppose it is closely related to the adopting the Kumihimo Method.