Download the technical paper, the digital data, and the program input parameters for a new publication “An Open-Pit Coalmine Surcharged by Artesian Water Pressure”. This paper is downloadable from the entirely electronic publication “International Journal of Geoengineering Case Histories”. Here is the abstract of the full paper:

The Jiri Open-Pit Coalmine, with its highly productive coal measure, is located in a protected region of the Czech Republic that is famous for its spas and artesian thermal springs. A pressurized aquifer underlies the mine. The mining advance is limited by the hazard of potential hydraulic fracturing and resultant flooding of the mine, as well as by serious changes to the hydrogeological conditions of the whole region. To prevent this hazard, the aquifer pressure has been reduced by drainage wells. Between 1976 and the present time, estimates were made of the feasibility of the mining advance at a minimum pressure head reduction, i.e. for the minimum environmental impact. An interactive procedure has been implemented using numerical models calibrated using field measurements, and a monitoring system has been updated based on the results of the numerical analyses. The paper describes the predicted and observed performance of the mine in safe and critical conditions, the estimated failure mechanisms and the hydraulic fracturing incidents that have occurred, as well as different approaches used to assess the hydraulic fracturing hazard in various mining conditions.

By way of introduction to the e-journal, I quote:

The “International Journal of Geoengineering Case Histories” covers the broad area of practice in geotechnical engineering (soils and rocks), geotechnical earthquake engineering, environmental geotechnics and engineering geology. Papers on well-documented case histories with emphasis on observations and data collected during and after project construction are invited. The journal aims to become an efficient mean of publishing and distributing high quality data from construction and research projects by taking advantage of the opportunities provided by the internet. Emphasis is given in the methods used to collect the data, and the project’s design and construction details. The intention is not only to establish another journal. The "International Journal of Geoengineering Case Histories" is also a database of high-quality geotechnical information. Published Information will be classified and become easily accessible. We aim to provide the engineer of practice and the researcher a very useful, high quality but free tool to their work.

Clearly a great resource and a site well worth while visiting. Two more papers in the current issue:

  • “Unexpected but Foreseeable Mat Settlement on Piedmont Residuum.”
  • “A Composite Barrier for Hydrocarbon Containment in the Artic.”