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地下にある孤立した島の道路の安定性分析と制御技術に関する研究が,作業面を覆っている
Xiaoxu Gao1, Yaowei Wang1, Yi-Ming Li2,3
1College of Energy and Mining Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
Scientific reports
|February 19, 2026
まとめ
石炭層の下の孤立した作業面の採掘は,上部にあるゴーフと柱の圧力のために複雑です. この研究では,道路の安定性を調査し,安全な採掘作業のためのサポート戦略を開発しました.
科学分野:
- 鉱山工学 鉱山工学とは
- ジオテクニカルエンジニアリング ジオテクニカルエンジニアリング
- ロック・メカニクス ロック・メカニクス
背景:
- 密集した石炭層の下にある孤立した作業面を採掘することは,上層のゴーフ,横軸の支柱圧,動的採掘力によるユニークな課題を提示します.
- 道路の周囲の岩石の変形と破損は,特にゴーフエリアと残留石炭柱の下では大きく変化し,従来のサポート戦略を複雑にします.
研究 の 目的:
- 地下にある孤立した島の作業面における道路の変形と安定性を調査する.
- 付近の石炭層に残留柱からのストレス伝達の影響を分析する.
- 安全な採掘作業のための効果的な安定性制御スキームを開発し,検証する.
主な方法:
- 理論的分析による分析.
- 数値シミュレーションによる数値シミュレーション
- フィールド観測 (表面の移動,アンカー力,石炭柱の変形)
主要な成果:
- 2−2シームの残留柱からのストレス移転は,3−1シームの62.1mまでに影響し,ストレスの転移係数はシーム直下の1.6である.
- 3-1シームの垂直ストレスは5つの異なる領域を示し,残留柱からの集中したストレスの下で最大ストレスと変形が発生します.
- ストレスの濃度はゴーフ領域の下に減少し,残留石炭柱の影響下では強化されたサポートが必要です.
結論:
- ゴーフエリアでの従来のサポートと残留柱の近くの強化されたサポートを含む組み合わせたサポートスキームは,道路の安定性を効果的に保証します.
- 現場での観測により,提案された支援システムは検証され,孤立した島での作業面採掘中に安全な生産を維持する効果が確認されました.
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