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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 729 - 741 (13page)
이용수
초록· 키워드
오류제보하기
In Shendong coalfield, severe support failure accidents caused by the dynamic pressure occurred frequently when longwall faces extracting the lower coal seam progress below the chamber coal pillars. These incidents largely threaten the personnel safety and regular operations. The rationale of the dynamic pressure has been investigated based on the movement law of the overlying strata. Experimental and numerical simulations of a longwall face in Shigetai coal mine agree well with the qualitative explanations. It is shown that the failure of the chamber coal pillars causes the sudden break and even rotation of the key strata, thereby leading to strong dynamic load that crushes the supports in the longwall face. Several guidelines have been proposed to prevent the occurrence of the dynamic pressure, the capability of which has been demonstrated by in situ practice in two longwall faces in Shendong coalfield.
목차
등록된 정보가 없습니다.
참고문헌 (27)
참고문헌 신청
Cheng, W. / 2013 / Acoustic emission monitoring of rockbursts during TBM-excavated headrace tunneling at Jinping II hydropower station / Journal of Rock Mechanics and Geotechnical Engineering 5:486~494
Fujii, Y. / 1997 / Prediction of coal face rockbursts and microseismicity in deep longwall coal mining / International Journal of Rock Mechanics and Mining Sciences 34:85~96
Hou, Z. / 2000 / Analysis of combinatorial key strata stability in shallow coal seam with thick loose bed / Journal of China Coal Society 25:127~131
Huang, Q. / 2002 / Ground pressure behavior and definition of shallow seams / Chinese Journal of Rock Mechanics and Engineering 21:1174~1177
Itasca Consulting Group, Inc. / 2011 / UDEC (Universal Distinct Element Code), Version 5.0
Fujii, Y. / 1997 / Prediction of coal face rockbursts and microseismicity in deep longwall coal mining / International Journal of Rock Mechanics and Mining Sciences 34:85~96
Hou, Z. / 2000 / Analysis of combinatorial key strata stability in shallow coal seam with thick loose bed / Journal of China Coal Society 25:127~131
Huang, Q. / 2002 / Ground pressure behavior and definition of shallow seams / Chinese Journal of Rock Mechanics and Engineering 21:1174~1177
Itasca Consulting Group, Inc. / 2011 / UDEC (Universal Distinct Element Code), Version 5.0
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