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- W34814582 abstract "The intersection of geologic faults by mine workings can be both hazardous and nonproductive. The severity of the impact on roof quality is related to the extent and type of movement of the fault. Faults are caused by three different processes. These are (1) large crustal movements (Pine Mountain Overthrust), (2) compressional slips caused by valley stress relief, and (3) compactional faults caused by lithologic transitions (ancient stream channel fills). Fault offsets range from inches to hundreds of feet vertically and from inches to miles horizontally. Roof effects include falls, pinched coalbeds, splits, slickensides, offsets, rolls, and crush zones. Recognition criteria for different faults are developed to help the operator realize that many sudden coalbed discontinuities are related to larger geologic events. Ground control strategies include mine designs that minimize fault exposure. Mining plans can be adjusted based on type and extent of fault movement." @default.
- W34814582 created "2016-06-24" @default.
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- W34814582 date "1993-01-01" @default.
- W34814582 modified "2023-09-23" @default.
- W34814582 title "Recognition and control of roof falls caused by faults" @default.
- W34814582 hasPublicationYear "1993" @default.
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