尾矿坝-排土场联合堆排稳定性与边坡参数优化研究
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摘要
尾矿坝和排土场作为矿山采选固废的堆存场所是矿山事故发生高频区域,其安全与否直接关系到矿山工程的正常生产。在分析国内尾矿坝-排土场联合堆坝所取得成果的基础上,结合湖南省某钨矿所属尾矿坝-排土场联合堆坝存在的问题,分析了尾矿坝-排土场联合堆排体三个剖面整体的稳定性,同时研究了各剖面边坡参数是否能有效拦截上方滚石,提出了各剖面外坡边坡角的优化参数,采用数值模拟方法对各剖面坡形优化后的外坡边坡角的稳定性进行了分析,根据计算结果对排土场外坡进行卸荷开采设计,卸荷后形成六级外坡平台,平台宽度为5.0 m,研究成果能够很好的指导尾矿坝-排土场联合堆排工程的治理设计。
As the storage sites for mining solid wastes,tailing ponds and waste dumps are at high frequency in mine accidents.Their safeties are directly related to the normal production of mine projects.On the basis of analysis of the results achieved by domestic tailing pond-waste dumping and combining with the existing problems of the united tailing pond-waste dump heaping site of a tungsten mine in Hunan Province,the overall stability of the three sections of tailing pond-waste dump heaping was analyzed.Study on whether the slope parameter can effectively block the rolling stones from the top was also conducted.And then the optimization parameters for the slope angle of each section are presented.The stability of the outer slope angle after optimizing of each section was calculated and analyzed using the numerical simulation method.According to the calculation results,the unloading design of the dump slope is carried out.After the unloading,a six-level5.0 meter slope platform is formed.The results can guide the management design of the united tailing pondwaste dump heaping project.
As the storage sites for mining solid wastes,tailing ponds and waste dumps are at high frequency in mine accidents.Their safeties are directly related to the normal production of mine projects.On the basis of analysis of the results achieved by domestic tailing pond-waste dumping and combining with the existing problems of the united tailing pond-waste dump heaping site of a tungsten mine in Hunan Province,the overall stability of the three sections of tailing pond-waste dump heaping was analyzed.Study on whether the slope parameter can effectively block the rolling stones from the top was also conducted.And then the optimization parameters for the slope angle of each section are presented.The stability of the outer slope angle after optimizing of each section was calculated and analyzed using the numerical simulation method.According to the calculation results,the unloading design of the dump slope is carried out.After the unloading,a six-level5.0 meter slope platform is formed.The results can guide the management design of the united tailing pondwaste dump heaping project.
引文
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[2]田文旗,薛剑光.尾矿库安全技术与管理[M].北京:煤炭工业出版社,2006:4-5.TIAN Wenqi,XUE Jianguang. Tailings deposit safetytechnology and management[M]. Beijing:CoalIndustry Press,2006:4-5.
[3]王运敏,项宏海.排土场稳定性及灾害防治[M].北京:冶金工业出版社,2011.WANG Yunmin,XIANG Honghai. Dumping sitestability and disaster prevention[M]. Beijing:Metallurgical Industry Press,2011.
[4]段蔚平,郭金峰,汪斌.我国金属矿山尾矿堆存技术及发展方向[J].金属矿山,2013(12):118-122.DUAN Weiping,GUO Jinfeng,WANG Bin. Stackingprocess of metal mine tailings in China and itsdevelopment trend[J]. Metal Mines,2013(12):118-122.
[5]王光进,杨春和,张超,等.超高排土场的粒径分级及其边坡稳定性分析研究[J].岩土力学,2011,32(3):905-913.WANG Guangjin,YANG Chunhe,ZHANG Chao,etal. Research on particle size grading and slope stabilityanalysis of super-high dumping site[J]. Rock and SoilMechanics,2011,32(3):905-913.
[6]武伟伟,龚宇同,秦秀山.小型尾矿库存在的问题及安全对策分析[J].有色金属(矿山部分),2011,63(5):49-51.WU Weiwei,GONG Yutong,QIN Xiushan. Analysis onexisting problems of small tailings pond and safetyprecautions[J]. Nonferrous Metals:Mine Section,2011,63(5):49-51.
[7]张培安.栗西尾矿库挖潜改造延长服务期探讨研究[J].有色金属(选矿部分),2003,32(5):43-45.ZHANG Peian. Study on the serve period is prolongedin Lixi tailings dam by tap the potentialities andremakes[J]. Nonferrous Metals:Mineral ProcessingSection,2003,32(5):43-45.
[8]唐飞.矿山排土场和尾矿库联合共建技术及其工程应用[J].有色金属(矿山部分),2016,68(5):78-81.TANG Fei. United constuction technology of the wastedumpand tailings pond in a mine and its engineeringapplication.[J]. Nonferrous Metals:Mine Section,2016,68(5):78-81.
[9]王晓民,冯有志,李全明.停用尾矿库改建排土场的工程实践[J].矿业工程,2015,13(3):50-52..WANG Xiaomin, FENG Youzhi, LI Quanming.Engineering practice of rebuilding tailings pond out ofservice into dump[J]. Mining Engineering,2015,13(3):50-52.
[10]李全明.尾矿库上覆排土场工程危险源辨识及安全评估技术研究[J].中国安全生产科学技术,2013,9(7):38-43.LI Quanming. Research on hazard source identificationand safety assessment technology for engineering ofdump on a tailings pond[J]. Journal of Safety Scienceand Technology,2013,9(7):38-43.
[11]杨学堂,王飞.边坡稳定性评价方法及发展趋势[J].岩土工程技术,2004,18(2):103-106.YANG Xuetang,WANG Fei. Slope stability evaluationmethod and development trend[J]. GeotechnicalEngineering Technology,2004,18(2):103-106.
[12]金属非金属矿山排土场安全作业规则:AQ2005—2005[S].北京:煤炭工业出版社,2005.Rules for safe operation of dumping sites innonmetallic metal mines:AQ2005—2005[S].Beijing:Coal Industry Press,2005.
[13]邓骐宁.高寒地区露天边坡稳定性分析及结构参数优化研究[D].长沙矿山研究院有限责任公司,2016.DENG Qining. Alpine region open pit slope stabilityanalysis and structure parameter optimization research[D]. Changsha Institute of Mining Research Co.,Ltd,2016.