高エネルギー地震による上部石炭道路の屋根崩壊:ケーススタディによる影響
Xiaotao Ma1,2, Linming Dou3, Kunyou Zhou4
1School of Mines, China University of Mining and Technology, Xuzhou, 221116, China.
Scientific reports
|August 26, 2025
まとめ
高エネルギー地震 (HESE) は,上部石炭が保持されている鉱山の屋根崩壊を引き起こす可能性があります. 延長されたケーブルボルトとメイン屋根の破裂は,ダイナミックエネルギーを軽減することによって,このリスクを大幅に軽減します.
科学分野:
- 鉱山工学
- 地質工学
- 地震学
背景:
- 完全に機械化された上部石炭掘削は石炭を保持し,道路の屋根の安定性を損なう.
- 高ストレスのゾーンは,鉱山の負荷の下でのサポートの悪化を悪化させる.
- 高エネルギー地震 (HESE) は,残された上部石炭の道路への重大な脅威です.
研究 の 目的:
- HESEによる屋根の崩壊を調査する.
- 災害の特徴を分析し,屋根の不安定性のための機械モデルを確立します.
- 延長されたケーブルボルトがHESEの衝撃を軽減する効果を評価する.
主な方法:
- ビンチャン鉱山地域の災害特性の分析
- 固定された石炭マスの屋根の機械モデルの開発
- 道路の屋根の動的不安定性基準の導出
- 粒子フローコード2D (PFC2D) のシミュレーションにより,エネルギー貢献を分析し,効率性をサポートします.
主要な成果:
- 横圧係数>1.25の道路から17m以内のHESEは屋根に重大な損傷を与え,垂直速度は運動エネルギーの84.19%を占める.
- 延長されたケーブルボルトのサポートは,従来のサポートと比較して57.41%のダイナミックエネルギーを削減します.
- 屋根の崩壊は,採掘によるストレスでサポートシステムの悪化によって悪化します.
結論:
- HESEによる屋根の崩壊は,維持された上部石炭道路の重要な問題です.
- 主屋根の断裂と延長されたケーブルボルトで強化することにより,ダイナミックな源を排除することで,崩壊のリスクを大幅に減らすことができます.
- 地震活動にさらされる高ストレスの鉱山環境で道路の安定性を確保するには,最適化されたサポート戦略が不可欠です.
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