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Title: Pumpable rockbolt method

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. Huntington Station, NY
  2. Brightwaters, NY
  3. Center Moriches, NY
Issue Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
OSTI Identifier:
862438
Patent Number(s):
3930639
Application Number:
05/509,998
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21D - SHAFTS
DOE Contract Number:  
AT(30-1)-16
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pumpable; rockbolt; method; apparatus; producing; rockbolts; roof; subterranean; cavity; components; ambient; temperature; curable; resin; premixed; inserted; bore; mixture; permitted; polymerize; situ; hardened; material; cut; entrance; leaving; portion; insertion; precursor; preferred; embodiment; flexible; glass; roving; employed; reinforce; metal; tube; support; fed; provide; venting; left; preferred embodiment; ambient temperature; metal tube; hardened material; /425/405/

Citation Formats

Steinberg, Meyer, Manowitz, Bernard, and Waide, Charles H. Pumpable rockbolt method. United States: N. p., 1976. Web.
Steinberg, Meyer, Manowitz, Bernard, & Waide, Charles H. Pumpable rockbolt method. United States.
Steinberg, Meyer, Manowitz, Bernard, and Waide, Charles H. Tue . "Pumpable rockbolt method". United States. https://www.osti.gov/servlets/purl/862438.
@article{osti_862438,
title = {Pumpable rockbolt method},
author = {Steinberg, Meyer and Manowitz, Bernard and Waide, Charles H},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

Patent:

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