山西煤炭
山西煤炭
산서매탄
SHANXI COAL
2014年
12期
23-25
,共3页
旧采区残煤复采%空巷顶板%力学模型%稳定性分析
舊採區殘煤複採%空巷頂闆%力學模型%穩定性分析
구채구잔매복채%공항정판%역학모형%은정성분석
residual coal mining in abandoned mining area%roof in goaf%mechanical model%stability analysis
为了研究旧采区遗留空巷顶板稳定性，将空巷顶板受力简化得到固支梁力学模型，对其破坏形式和过程进行分析，得到空巷保持稳定的极限跨距计算公式，结合仙泉煤业旧采空巷赋存实际，经计算得出不同层位的煤岩体垮落对应的空巷极限跨距，研究结果对旧采区煤柱安全回收具有重要参考意义。
為瞭研究舊採區遺留空巷頂闆穩定性，將空巷頂闆受力簡化得到固支樑力學模型，對其破壞形式和過程進行分析，得到空巷保持穩定的極限跨距計算公式，結閤仙泉煤業舊採空巷賦存實際，經計算得齣不同層位的煤巖體垮落對應的空巷極限跨距，研究結果對舊採區煤柱安全迴收具有重要參攷意義。
위료연구구채구유류공항정판은정성，장공항정판수력간화득도고지량역학모형，대기파배형식화과정진행분석，득도공항보지은정적겁한과거계산공식，결합선천매업구채공항부존실제，경계산득출불동층위적매암체과락대응적공항겁한과거，연구결과대구채구매주안전회수구유중요삼고의의。
To study the stability of roof in goaf in abandoned mining area, the roof stress was simplified to achieve a mechanical model for clamped beams. Its failure form and process were studied for a calculation formula of limited span to retain the goaf stability. Combined with occurrence of the abandoned goaf in Xianquan Coal Co., Ltd., the limited spans in coal rock falling at different layers were worked out. The results is important for safe recovery of coal pillars in the abandoned mining area.
