Pumpable rockbolt method,申请号US19740509998-传众专利搜索

Pumpable rockbolt method

申请公布号：US3930639(A)

申请号：US19740509998

申请日期：1974.09.27

申请公布日期：1976.01.06

申请人：

THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES ENERGY RESEARCH AND DEVELOPMENT ADMINISTRATION

发明人：STEINBERG, MEYER;MANOWITZ, BERNARD;WAIDE, CHARLES H.

分类号：E21D20/02;(IPC1-7):B01F15/02

主分类号：E21D20/02

摘要：Method and apparatus for producing rockbolts in the roof of a subterranean cavity in which two components of an ambient temperature curable resin system are premixed and then inserted into a bore hole. The mixture is permitted to polymerize in situ and then the hardened material is cut off at the entrance to the hole leaving a hardened portion for insertion into the next hole as a precursor. In a preferred embodiment a flexible glass roving is employed to reinforce the material in the hole and a metal tube inserted to support the roving while it is fed into the hole and also to provide venting. The roving and tube is then cut off and left in the hole.