Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength
Abstract
A finite region of overpressure can be created in solid underground formations by the periodic injection of a fluid that has finite gel strength that subsequently, after each injection, partially sets--i.e., equivalently becomes a very much stronger gel. A region of overpressure is a region in which the static, locked in pressure is larger than what was there before. A region of overpressure can be used to prevent a roof of a tunnel from caving by adding compressive stresses in the roof. A sequence of regions of overpressure can be used to lift an arch or dome underground, squeeze off water or gas flows, stabilize dams, foundations, large underground rooms, etc. In general, the stress or pressure distribution in rock can be altered and engineered in a fashion that is more advantageous than what would have been the case without overstressing. 3 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7002891
- Patent Number(s):
- 4370077
- Application Number:
- PPN: US 6-175047
- Assignee:
- PTO; EDB-94-125204
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 4 Aug 1980
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 13 HYDRO ENERGY; 01 COAL, LIGNITE, AND PEAT; DAMS; STABILIZATION; GELS; FLUID INJECTION; GEOLOGIC STRATA; MINE ROADWAYS; TUNNELS; CURING; DEGASSING; MECHANICAL PROPERTIES; PRESSURIZATION; RESERVOIR PRESSURE; STRATA CONTROL; WATER INFLUX; COLLOIDS; DISPERSIONS; GEOLOGIC STRUCTURES; UNDERGROUND FACILITIES; 422000* - Engineering- Mining & Underground Engineering- (1980-); 130200 - Hydro Energy- Site Geology & Meteorology; 012031 - Coal, Lignite, & Peat- Underground Mining- Strata Mechanics & Control- (1987-)
Citation Formats
Colgate, S A. Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength. United States: N. p., 1983.
Web.
Colgate, S A. Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength. United States.
Colgate, S A. Tue .
"Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength". United States.
@article{osti_7002891,
title = {Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength},
author = {Colgate, S A},
abstractNote = {A finite region of overpressure can be created in solid underground formations by the periodic injection of a fluid that has finite gel strength that subsequently, after each injection, partially sets--i.e., equivalently becomes a very much stronger gel. A region of overpressure is a region in which the static, locked in pressure is larger than what was there before. A region of overpressure can be used to prevent a roof of a tunnel from caving by adding compressive stresses in the roof. A sequence of regions of overpressure can be used to lift an arch or dome underground, squeeze off water or gas flows, stabilize dams, foundations, large underground rooms, etc. In general, the stress or pressure distribution in rock can be altered and engineered in a fashion that is more advantageous than what would have been the case without overstressing. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 25 00:00:00 EST 1983},
month = {Tue Jan 25 00:00:00 EST 1983}
}