采矿与安全工程学报
採礦與安全工程學報
채광여안전공정학보
JOURNAL OF MINING AND SAFETY ENGINEERING
2015年
1期
65-72
,共8页
动态扰动%嗣后充填%采场%灾变机制
動態擾動%嗣後充填%採場%災變機製
동태우동%사후충전%채장%재변궤제
dynamic disturbance%stage backfill%stope%catastrophe mechanism
为了明确某矿阶段嗣后充填采场破坏事故原因，结合事故现场工程实际及调查结果，采用相似模型、数值分析及现场监测手段，研究了阶段嗣后充填采场围岩变形特征、破坏模式、巷道表面变形规律。结果表明：开采活动对嗣后采场围岩及周边工程影响具有明显的区域特性；不同分段的开采活动对采场顶板位移影响程度不同，第2分段开采导致顶板最大位移增量最多，而第3分段开采时加剧了矿柱应力集中，致使矿柱发生沿近似60°的结构面发生剪切滑移破坏；同时也使位于矿柱内部邻近空区的巷道侧壁发生垮塌。通过对比分析数值模拟与现场监测的结果，证明了相似模型试验的结论。研究结论不仅全面认识了该矿阶段嗣后充填采场破坏事故原因，还明确了阶段嗣后充填采矿方法采场安全潜在危险源，可为其他类似矿山提供安全借鉴。
為瞭明確某礦階段嗣後充填採場破壞事故原因，結閤事故現場工程實際及調查結果，採用相似模型、數值分析及現場鑑測手段，研究瞭階段嗣後充填採場圍巖變形特徵、破壞模式、巷道錶麵變形規律。結果錶明：開採活動對嗣後採場圍巖及週邊工程影響具有明顯的區域特性；不同分段的開採活動對採場頂闆位移影響程度不同，第2分段開採導緻頂闆最大位移增量最多，而第3分段開採時加劇瞭礦柱應力集中，緻使礦柱髮生沿近似60°的結構麵髮生剪切滑移破壞；同時也使位于礦柱內部鄰近空區的巷道側壁髮生垮塌。通過對比分析數值模擬與現場鑑測的結果，證明瞭相似模型試驗的結論。研究結論不僅全麵認識瞭該礦階段嗣後充填採場破壞事故原因，還明確瞭階段嗣後充填採礦方法採場安全潛在危險源，可為其他類似礦山提供安全藉鑒。
위료명학모광계단사후충전채장파배사고원인，결합사고현장공정실제급조사결과，채용상사모형、수치분석급현장감측수단，연구료계단사후충전채장위암변형특정、파배모식、항도표면변형규률。결과표명：개채활동대사후채장위암급주변공정영향구유명현적구역특성；불동분단적개채활동대채장정판위이영향정도불동，제2분단개채도치정판최대위이증량최다，이제3분단개채시가극료광주응력집중，치사광주발생연근사60°적결구면발생전절활이파배；동시야사위우광주내부린근공구적항도측벽발생과탑。통과대비분석수치모의여현장감측적결과，증명료상사모형시험적결론。연구결론불부전면인식료해광계단사후충전채장파배사고원인，환명학료계단사후충전채광방법채장안전잠재위험원，가위기타유사광산제공안전차감。
In order to investigate the reason of the failure of stage backfill stope during one mine, the deformation characteristics, failure mode of backfill roof and pillar and the surface displacement law of roadway have been studied by similar material simulation, numerical modeling and field monitoring based on the field engineering condition and investigation results. The results indicate that mining action has a significant influence on the stability of the stope and rock surrounding and the engineering on the perimeter zone, and it also poses a different impact on the maximum displacement of stope roof at dif-ferent sublevel. The incremental quantity of roof displacement reaches the most when mining activity processes at second sublevel. And when mining at the third sublevel exacerbates the stress concentration of pillar, the splitting failure begins to appear along the pillar and the roadway in a structural plane of approximately 60°, and at the same time, the side walls nearby the goaf inside the pillar begin to col-lapse. Compared to the results obtained from the numerical simulation and field monitoring, the conclu-sions obtained by similar model test are testified. The research conclusions propose a comprehensive understanding of the reason of the collapse accident, and clarify the potential hazards of backfill stop, which can provide security references for other similar mines.
