Guidelines for Mining Near Water Bodies. Phase III. Recommended Guidelines for Mining Under Surface Waters.

摘要

This report formulates practical guidelines for active underground mining in close proximity to water bodies. This was accomplished through systematic completion of three phases of study: (I) Collection and documentation of data, (II) Application of existing guidelines to case histories of previous inundations,and (III) Development of recommended guidelines for underground coal mining near bodies of water. Existing guidelines were categorized and classified,and then evaluated as to their effectiveness in precluding past inundations had they been in effect at the time of inrush. Advantages and disadvantages of existing guidelines were defined. Two levels of guidelines are presented;level I guidelines require little or no subsurface exploration on the part of the mine operator,while level II guidelines recommend various testing and investigative procedures to permit greatest possible mineral extraction.