高圧鉱山作業面における崩壊柱を横断する道路の周囲の岩の制御に関する技術的研究
Hai Rong1, Longyue He2, Nannan Li1
1College of Mining, Liaoning Technical University, Fuxin, 123000, China.
Scientific reports
|August 29, 2025
まとめ
この研究は,崩壊柱を横断する鉱山の道路を安定させるための複合サポートシステムを開発しました. このシステムは岩の不安定性を効果的に軽減し,高圧の採掘下で構造的整合性を確保しました.
科学分野:
- 鉱山工学
- 地理工学
- ロック・メカニクス
背景:
- 高ストレスの鉱山環境における崩壊柱の道路横断は,複雑なストレスの再分配を引き起こし,周囲の岩石の不安定性とサポートの失敗につながります.
- 崩壊コラムゾーンの機械的振る舞いを理解することは,効果的なサポートシステムの設計に不可欠です.
研究 の 目的:
- 道路の交差点における崩壊柱地帯の機械的振る舞いを調査する.
- 崩壊柱地帯の道路に最適化された複合材のサポートシステムを開発し,検証する.
主な方法:
- 理論的分析 (弾性力学),数値モデリング (Midas GTS NX,FLAC3D) とフィールド検証を組み合わせた統合アプローチ.
- 崩壊柱構造内のストレスの分布の特徴
- "浅穴爆破 + ボルト・ケーブル・メッシュ + π-スチール・シェード"の複合サポートシステムの設計とシミュレーション.
主要な成果:
- 低ストレスのコア,ストレスの減少,およびストレスの濃度のゾーンを含む,崩壊列内の明確なストレスの領域を特定した.
- 理論的な計算では,プラスチック障害の範囲は 50.01 m と予測されました.
- 提案された複合材のサポートシステムは,プラスチックゾーンの範囲を18%削減し,屋根の沈下を6.6%減少させ,サイドウォールの変形を200mm未満に制限しました.
- フィールドモニタリングは,屋根の位移を150mm以内で維持し,システムの有効性を確認しました.
結論:
- 開発された複合材のサポートシステムは,鉱山による高圧下での崩壊柱を横断する鉱山道路の安定化に効果的です.
- この研究は,困難な地質条件下での道路の設計のための定量的なガイドラインを提供します.
- 道路の安定性を確保するために,最適化された浅穴爆破と堅固な複合材料の支柱構造が不可欠です.
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