Anchoring systems and methods of use thereof
View Patent ↗A method of adjusting gel time of a grouting system used for anchoring a reinforcement in a mine includes adding inhibitor to initiator of the grouting system, the inhibitor and initiator being disposed together in a first compartment of a multi-compartment shreddable package.
1. A method of adjusting gel time of a grouting system used for anchoring a reinforcement in a mine comprising:
adding inhibitor to initiator of the grouting system, the inhibitor and initiator being disposed together in a first compartment of a multi-compartment shreddable package.
2. The method of claim 1 , wherein the initiator is catalyst mastic.
3. The method of claim 1 , wherein the initiator is a free radical generating component.
4. The method of claim 3 , wherein the initiator comprises benzoyl peroxide.
5. The method of claim 1 , wherein the inhibitor is a free radical inhibitor.
6. The method of claim 5 , wherein the inhibitor is selected from the group consisting of naphthoquinone and hydroquinone.
7. The method of claim 1 , wherein the grouting system further comprises resin mastic in a second compartment of the multi-compartment shreddable package.
8. The method of claim 7 , wherein the resin mastic comprises polyester with a styrene monomer cross-linking agent.
9. A method of adjusting gel time of a resin-catalyst system used for anchoring a reinforcement in a mine comprising:
adding inhibitor to catalyst separated from resin in the system.
10. A method of anchoring a reinforcement in a mine comprising:
providing a borehole;
inserting a capsule in the borehole, the capsule having (1) a first section with resin mastic therein and (2) a second section with catalyst mastic and an inhibitor therein, wherein the inhibitor is substantially disposed in only a portion of the catalyst mastic in the second section;
inserting a reinforcement in the borehole;
spinning the reinforcement to puncture the capsule and mix the resin mastic, catalyst mastic, and inhibitor;
holding the reinforcement stationary for a first period of time.
11. The method of claim 10 , wherein the capsule is inserted in the borehole so that an end of the capsule abuts a closed end of the borehole.
12. The method of claim 10 , wherein the capsule and reinforcement are inserted into the borehole at the same time.
13. The method of claim 10 , further comprising:
tensioning the reinforcement after the first period of time.
14. A grouting system for anchoring a reinforcement in a mine comprising:
a package comprising a tubular member formed of polymer film and having discrete first and second compartments;
a resin mastic disposed in the first compartment;
a catalyst mastic and an inhibitor disposed in the second compartment.
15. The grouting system of claim 14 , wherein the catalyst mastic comprises benzoyl peroxide.
16. The grouting system of claim 14 , wherein the inhibitor comprises naphthoquinone.
17. The grouting system of claim 14 , further comprising a colorant in the first compartment.
18. The grouting system of claim 14 , wherein the colorant is a dye.
19. The grouting system of claim 14 , wherein the resin mastic comprises polyester with a styrene monomer cross-linking agent.
20. The system of claim 14 , wherein the resin mastic comprises methyl methacrylate.
21. The system of claim 14 , wherein the second compartment comprises a first portion in which both catalyst mastic and inhibitor are disposed and a second portion in which catalyst mastic is disposed substantially without inhibitor.
22. The system of claim 14 , wherein at least one of the catalyst mastic and resin mastic comprises limestone.
23. A method of achieving substantially uniform setting of a resin-catalyst system used for anchoring a reinforcement in a mine, the method comprising:
adding inhibitor to catalyst separated from resin in the resin-catalyst system such that gel time of the system is independent of resin to catalyst ratio, wherein the resin to catalyst ratio is from about 1:1 to about 9:1.
24. The method of claim 23 , wherein the resin to catalyst ratio is from about 1.5:1 to about 4:1.
25. The method of claim 24 , wherein the catalyst comprises benzoyl peroxide.
26. The method of claim 24 , wherein the inhibitor comprises naphthoquinone.