莱州市某铁矿采空区稳定性评价
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摘要
莱州市某铁矿采空区由浅孔房柱法开采所形成。前人勘查工作已基本查明采空区分布情况。基于其圈定的采空区范围、分布特征及其场区地质环境,通过简支梁理论及当量暴露面积法对采空区稳定性做进一步地分析。研究结果表明该铁矿采空区处于不稳定状态。加之无序开采、顶板冒落、工程地质条件较差、地下水扰动等因素,采空区塌陷及地裂缝潜在危险性较高,建议对其进行注浆充填治理及变形监测任务,以消除安全隐患,保障区内及周边人民的生命和财产安全。
The mine-out area of an iron mine in Laizhou mined by shallow-hole room-pillar mining method,is delineated by previous exploration.Based on the distribution range,characteristics and geological environment of the mine-out area,the stability was further analyzed by simple beam theory and equivalent exposed area method further.The results indicated the mine-out area was still under an unstable state.With the additional influences of disorderly mining,roof caving,unfavorable engineering geological condition,ground water's perturbation and etc.,it can easily cause the geological hazards of mining collapse and ground fissure.Therefore,it is suggested that the mineout area should be treated by grouting filling and deformation monitoring to eliminate the hidden safety danger,and ensure the safety of people's lives and properties further in the study area and its surrounding area.
The mine-out area of an iron mine in Laizhou mined by shallow-hole room-pillar mining method,is delineated by previous exploration.Based on the distribution range,characteristics and geological environment of the mine-out area,the stability was further analyzed by simple beam theory and equivalent exposed area method further.The results indicated the mine-out area was still under an unstable state.With the additional influences of disorderly mining,roof caving,unfavorable engineering geological condition,ground water's perturbation and etc.,it can easily cause the geological hazards of mining collapse and ground fissure.Therefore,it is suggested that the mineout area should be treated by grouting filling and deformation monitoring to eliminate the hidden safety danger,and ensure the safety of people's lives and properties further in the study area and its surrounding area.
引文
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[21]谢全敏,殷建强,杨文东.基于Hoek-Brown方程的边坡光面爆破参数设计方法[J].中国铁道科学,2017,38(2):1-5.
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[23]刘志义,侯金亮,赵国彦,等.二步采场上盘围岩稳定性分析及工程应用[J].金属矿山,2015(11):143-148.
[24]陈申方,李占金,任贺旭,等.极限跨度法与PLAXIS3D在采空区稳定性分析中的应用[J].金属矿山,2016(1):43-46.
[25]雷明礼,张海磊,赵永平,等.露天坑下矿柱回收的安全性分析[J].金属矿山,2016(2):17-20.
[2]罗周全,张旭芳,刘晓明,等.基于模糊模式识别的金属矿采空区危险性综合评价[J].安全与环境学报,2010,10(3):195-199.
[3]吴佳锡.金属矿山采空区处理方式及实施要点之研究[J].世界有色金属,2017(20):76,78.
[4]王金波,秦秀合,李寿磊,等.基于钻孔法探测的隐伏采空区冒落规律研究[J].黄金,2018,39(1):34-39.
[5]柳小波,彭建宇.采空区顶板破坏机理研究及安全厚度确定[J].金属矿山,2012(11):5-9.
[6]秦秀山,王湖鑫,许文远,等.某矿采空区灾害分析与处理对策研究[J].有色金属(矿山部分),2014,66(5):22-26.
[7]丁金刚,蒋辉.采空区勘查新技术及应用[J].地球物理学进展,2015,30(3):1459-1464.
[8]江天生,蒋跃飞,余乐兴.采空区地压稳定性综合评价及安全治理研究[J].价值工程,2016(14):69-74.
[9]王海军,薛辛陪.国外某铜锌矿采空区治理方案研究[J].有色金属(矿山部分),2015,67(1):19-24.
[10]胡从倩,王德胜,崔帅立,等.多层采空区稳定性分析及处理措施[J].金属矿山,2013(11):29-33.
[11]杨典森,陈卫忠,杨为民,等.龙滩地下洞室群围岩稳定性分析[J].岩土力学,2004,25(3):391-395.
[12]杨扬,冯乃琦,余珍友,等.基于层次分析和模糊数学的采空区稳定性综合评价[J].有色金属(矿山部分),2008,60(5):37-42.
[13]李会荀,佟俊梅,徐春梅.山东省莱州市新立金矿床成矿规律研究[J].资源与产业,2007,9(5):49-55.
[14]宋卫东,付建新,谭玉叶.金属矿采空区灾害防治技术[M].北京:冶金工业出版社,2015.
[15]陈新国,胡朝阳,安岚.湖南省某煤矿采空区地表变形成因分析[J].西部探矿工程,2006,18(2):97-99.
[16]张海波,宋卫东,付建新.大跨度空区顶板失稳临界参数及稳定性分析[J].采矿与安全工程学报,2014,31(1):66-71.
[17]方玉树,黄家愉.工程勘察中岩土性质指标的确定—《工程地质勘察规范》(DBJ50-043-2005)讲座之五[J].重庆建筑,2007(3):52-54.
[18]HOEK E,BROWN E T.Empirical strength criterion for rock masses[J].Journal of the Geotechnical Engineering Division,ASCE,1980,106(9):1013-1035.
[19]潘别桐.工程岩体强度的估算方法[J].地球科学—中国地质大学学报,1985,10(1):55-63.
[20]高玉坤,刘阜鑫,黄志安,等.鹿鸣钼矿岩体宏观力学参数确定与优化[J].金属矿山,2017(4):27-30.
[21]谢全敏,殷建强,杨文东.基于Hoek-Brown方程的边坡光面爆破参数设计方法[J].中国铁道科学,2017,38(2):1-5.
[22]张志文,张天敏.用当量暴露面积法评价矿山采场的稳定性[J].金属矿山,1993(7):26-29.
[23]刘志义,侯金亮,赵国彦,等.二步采场上盘围岩稳定性分析及工程应用[J].金属矿山,2015(11):143-148.
[24]陈申方,李占金,任贺旭,等.极限跨度法与PLAXIS3D在采空区稳定性分析中的应用[J].金属矿山,2016(1):43-46.
[25]雷明礼,张海磊,赵永平,等.露天坑下矿柱回收的安全性分析[J].金属矿山,2016(2):17-20.