| Autor: |
C. Black, P.F. Ziemkiewicz, H.J. Siriwardane, R. Hamric, D.D. Gray |
| Rok vydání: |
1998 |
| Předmět: |
|
| Zdroj: |
Journal American Society of Mining and Reclamation. 1998:651-657 |
| ISSN: |
2328-8744 |
| DOI: |
10.21000/jasmr98010651 |
| Popis: |
This paper presents the results of a study involving a field scale injection of a grout made of Fluidized Bed Combustion Ash to control acid mine drainage and subsidence at an abandoned room and pillar coal mine. The grout mix was developed from results obtained from several laboratory scale experiments conducted to investigate flow characteristics and strength of the grout. Based on the rheological properties of the candidate grout mixes it was determined that admixtures were needed to stabilize the grout for optimum flow characteristics. Strength requirements for the grout were determined from site specific geologic information and expected stress levels. One thousand cubic yards of the candidate grout were pumped into an inactive panel of an active room and pillar coal mine to investigate the field performance of the grout. The field study showed that a grout made of Fluidized Bed Combustion ash can be successfully pumped to backfill the mine void. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
