Location
New York, New York
Date
16 Apr 2004, 8:00am - 9:30am
Abstract
Jiri Open-Pit Coalmine with highly productive coal measure is located in a famous and protected spa region with artesian thermal springs. A pressurized aquifer underlies the mine and the mining advance is limited by hydraulic fracturing hazard, which could result not only in flooding the mine, but also in dangerous changes of the hydro-geological conditions of the whole region. To prevent this hazard, the aquifer pressure has been reduced by flowing wells. To estimate the feasibility of the mining advance at a minimum pressure head reduction, i.e. at minimum environmental impact, an interactive procedure with numerical models calibrated according to field measurements and monitoring system updated according to numerical solutions has been applied since 1976 up to the present time. The predicted and observed performance of the mine in safe and critical conditions, the estimated failure mechanisms and the accidents occurred, as well as different approaches to the assessment of hydraulic fracturing hazard in varying mining conditions are described in the paper.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Dolezalova, Marta; Hladik, Ivo; and Zemanova, Vlasta, "Case History of an Open-Pit Coalmine Loaded by Artesian Water Pressure" (2004). International Conference on Case Histories in Geotechnical Engineering. 22.
https://scholarsmine.mst.edu/icchge/5icchge/session06/22
Case History of an Open-Pit Coalmine Loaded by Artesian Water Pressure
New York, New York
Jiri Open-Pit Coalmine with highly productive coal measure is located in a famous and protected spa region with artesian thermal springs. A pressurized aquifer underlies the mine and the mining advance is limited by hydraulic fracturing hazard, which could result not only in flooding the mine, but also in dangerous changes of the hydro-geological conditions of the whole region. To prevent this hazard, the aquifer pressure has been reduced by flowing wells. To estimate the feasibility of the mining advance at a minimum pressure head reduction, i.e. at minimum environmental impact, an interactive procedure with numerical models calibrated according to field measurements and monitoring system updated according to numerical solutions has been applied since 1976 up to the present time. The predicted and observed performance of the mine in safe and critical conditions, the estimated failure mechanisms and the accidents occurred, as well as different approaches to the assessment of hydraulic fracturing hazard in varying mining conditions are described in the paper.
