基于高精度微震監測的特厚煤層綜放工作面頂板運動規律

孔令海; 姜福興; 楊淑華; 宋金旺; 王存文

doi:10.13374/j.issn1001-053x.2010.05.014

基于高精度微震監測的特厚煤層綜放工作面頂板運動規律

doi: 10.13374/j.issn1001-053x.2010.05.014

1. 北京科技大學金屬礦山高效開采教育部重點實驗室, 北京 100083;
2. 北京科技大學土木與環境工程學院, 北京 100083;
3. 北京科技大學信息工程學院, 北京 100083;
4. 大同煤礦集團大唐塔山煤礦, 大同 037003

基金項目:

國家自然科學基金資助項目(No.40674017,No.50774012)

國家重點基礎研究發展計劃資助項目(No.2010CB226803)

“十一五”國家科技支撐計劃資助項目(No.2007BAK24B04)

詳細信息

作者簡介:
孔令海(1979-),男,博士研究生;姜福興(1962-),男,教授,博士生導師,E-mail:jiangfuxing1@163.com

中圖分類號: TD823.25⁺4;P631.4
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- 文章訪問數: 122
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- 被引次數: 0
出版歷程
- 收稿日期: 2009-06-12

Movement of roof strata in extra-thick coal seams in top-coal caving mining based on a high precision micro-seismic monitoring system

1. Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China;
4. Datangtashan Colliery, Datong Mine Group, Datong 037003, China

摘要

摘要: 采用高精度微地震監測技術,研究了微震事件的動態發展規律和分布規律,結合巖石力學和礦山壓力與巖層運動理論,推斷得到了特厚煤層綜放工作面頂板巖層運動規律.隨工作面的推進,微震事件先在高位巖層以低密度分布,后在低位巖層呈高密度分布.微震事件發生層位與其最大振幅能量和的對比研究表明,微震事件在高度和時間上具有周期性分布規律,根據礦山壓力與巖層運動理論,進而推知特厚煤層綜放工作面的頂板巖層運動規律.現場支架工作阻力宏觀觀測表明,研究得到的特厚煤層綜放工作面頂板巖層的周期性運動規律是存在的.
- 特厚煤層 /
- 綜放開采 /
- 微地震監測 /
- 微震事件 /
- 巖層運動
Abstract: By using an underground high-precision micro-seismic monitoring system, the dynamic development law and the distribution pattern of micro-seismic events (MS events) were analyzed, and the movement law of roof strata in extra-thick coal seams in the fully mechanized top-coal caving mining workface was inferred in combination with the mine pressure and strata movement theory and the rock mechanics theory. Monitoring results show that MS events in higher strata and lower strata are of low-density distribution and high-density distribution, respectively. Comparative studies on the horizon and maximum amplitude energy sum of micro-seismic waves indicate that MS events reveal periodical distribution in height and time. Further more, the movement law of roof strata in extra-thick coal seams in the fully mechanized top-coal caving mining workface was inferred. Macro-observations of support pressure show the conclusion of periodic movement of roof strata is reasonable.
- thick coal seam /
- top-coal caving /
- microseismic monitoring /
- microseismic events /
- strata movement