| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: invention is used in workings for supporting. Proposed anchor includes rod, nut, support plate and destructible installed on rod. Tube with outer surface widening towards lock end of anchor is secured on rod. Destructible is made of preset-size particles of definite shape and strength by binder whose strength is less than that of said particles. Metal bushing is installed between support plate and destructible bushing. According to second design version, properties and ratio of volumes of particles of destructible bushing and binder are chosen to provide formation of loose mixture, after destruction of bushing, which can be pressed to form monolith articles. Anchor is furnished with metal pipe for fitting in hole. ^ EFFECT: reduced labor input when fitting in hole, reduced cost and improved reliability of fastening. ^ 9 cl, 4 dwg |
