首页>
外国专利>
System of underground rock anchor and method for transferring load from the outside of the cover in unstable environment underground indoor confined and most stable of rock mass surrounding the cover
System of underground rock anchor and method for transferring load from the outside of the cover in unstable environment underground indoor confined and most stable of rock mass surrounding the cover
"System of underground rock anchor and method for transferring load from the outside of the cover in unstable environment underground indoor confined and most stable of rock mass surrounding the cover" summary this invention reveals an anchoring system of underground rock compreend Endo bolt rock having a screw shaft operationally located in a hole straight alongadThe perforated into a cover such that a portion of the end of the screw shaft out of the hole, the screw shaft having a side wall defining an internal chamber hollow extending along at least part of the length of the screw shaft.A back plate adapted to be fitted on the protruding end part of the screw shaft for support against a surface of the rock cover; and means for fixing it to pull the back plate tighten against the surface of the rock cover. The invention also extends to a method of anchoring rock in such a system is used. 1 / 1
展开▼
