尾矿坝稳定性分析的模糊随机可靠度模型及应用
|
摘要
针对传统可靠度及坝体安全系数计算方法存在的两个方面的不足:①实际工程中不可能给出设计变量精确的均值,而且这些均值在很大程度上受到许多客观因素或人为作用的影响,这些影响程度具有较大的模糊性;②传统的可靠度理论以Z=0作为度量坝体是否失效的界限,在零点两侧,结构的失效和安全状态是以突变形式转化的,但坝体从安全到破坏很难用明确界限划分,在可靠与失效之间有一个中间过渡状态存在,是一个模糊范围。在解决以上两个问题的基础之上,首次将模糊可靠度理论应用到尾矿坝的稳定性研究中,既考虑尾矿坝破坏事件的模糊性,又考虑主要变量和参数的模糊性,将模糊性和随机性相结合,研究尾矿坝工程的模糊随机可靠度分析方法。工程实例计算表明:计算结果与实际情况吻合良好,较传统坝体安全系数计算方法更加科学合理,更能反映尾矿坝的真实状况,为尾矿坝稳定性的计算提供了一条新途径。
The traditional dam reliability and the safety coefficient calculation methods have two aspects of deficiencies:on one hand,it is impossible to give the accurate mean values of practical engineering design variables,and these values are greatly affected by many objective factors or artificial action.The effects have great degree of ambiguity.On the other hand,the traditional reliability theory employs Z=0 as the dam failure criterion to define the states of structural failure and security.But the damage of the dam from the safety limits is difficult to define.The transitional state of existence between reliablility and failure is a fuzzy area.Based on the above two issues,the fuzzy theory was applied to the stability of the tailing dams considering both the fuzziness of tailing dam failure and the main variables and parameters.The fuzziness and the randomness of the tailing dam project were integrated.The case studies show that the results and the actual situation are in good agreement,and that the method proposed,more scientific and rational than the traditional calculation methods,reflects the real situation for the stability of the tailing dams and provides a new way to analyze the stability of the tailing dams.
The traditional dam reliability and the safety coefficient calculation methods have two aspects of deficiencies:on one hand,it is impossible to give the accurate mean values of practical engineering design variables,and these values are greatly affected by many objective factors or artificial action.The effects have great degree of ambiguity.On the other hand,the traditional reliability theory employs Z=0 as the dam failure criterion to define the states of structural failure and security.But the damage of the dam from the safety limits is difficult to define.The transitional state of existence between reliablility and failure is a fuzzy area.Based on the above two issues,the fuzzy theory was applied to the stability of the tailing dams considering both the fuzziness of tailing dam failure and the main variables and parameters.The fuzziness and the randomness of the tailing dam project were integrated.The case studies show that the results and the actual situation are in good agreement,and that the method proposed,more scientific and rational than the traditional calculation methods,reflects the real situation for the stability of the tailing dams and provides a new way to analyze the stability of the tailing dams.
引文
[1]AQ2006-2005尾矿库安全技术规程[S].2005.(AQ2006-2005Technical specification for tailing dam safety[S].2005.(in Chinese))
[2]胡明鉴,郭爱国,陈守义.某上游法尾矿坝抗滑稳定性分析的几点思考[J].岩土力学,2004,25(5):769-773.(HU Ming-jian,GUO Ai-guo,CHEN Shou-yi.Study on anti-sliding stability analysis of some upper reaches method tailings dam[J].Rock and Soil Mechanics,2004,25(5):769-773.(in Chinese))
[3]熊文林,李胡生.岩石样本力学参数值的随机模糊处理方法[J].岩土工程学报,1992,14(6):101-108.(XIONG Wen-ling,LI Hu-sheng.Random fuzzy treating method of rock sample mechanics parameter value[J].Chinese Journal of Geotechnical Engineering,1992,14(6):101-108.(in Chinese))
[4]刘春.边坡工程中岩石力学参数随机模糊选取研究[J].岩土力学,2004,25(6):1327-1329.(LIU Chun.Study on random fuzzy selection of rock mechanics parameter in slope engineering[J].Rock and Soil Mechanics,2004,25(6):1327-1329.(in Chinese))
[5]王鹏.基于随机模糊理论的岩石抗剪参数的确定[J].岩石力学工程学报,2005,24(4):547-552.(WANG Peng.Determining rock shear parameter based on random fuzzy theory[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(4):547-552.(in Chinese))
[6]李胡生.岩石力学参数概率分布的随机模糊估计方法[J].固体力学学报,1993,14(4):347-351.(LI Hu-sheng.Random fuzzy appraisal method in parameter probability distribution of rock mechancs[J].Acta Mechanism Solide Sinica,1993,14(4):347-351.(in Chinese))
[7]李胡生.岩土工程随机模糊可靠度的概念和方法[J].岩土力学,1993,14(2):25-34.(LI Hu-sheng.Concept and method of random fuzzy reliability in geotechnical engineering[J].Rock and Soil Mechanics,1993,14(2):25-34.(in Chinese))
[8]李胡生,熊文林.岩体力学参数的工程模糊处理[J].水利学报,1994,14(1):76-85.(LI Hu-sheng,XIONG Wen-ling.Engineering fuzzy treatment of rock mechanics parameter[J].Journal of Hydraulic Engineering,1994,14(1):76-85.(in Chinese))
[9]OKA Y.System reliability of slope stability[J].Geotech Engineering,1990,106(8):1863-1869.
[10]HU Ming-jian,GUO Ai-guo,CHEN Shou-yi.Reflections on anti-slide stability analysis of a gangue dam[J].Chinese Journal of Rock Mechanics and Engineering,2004,25(5):769-773.
[11]尹光志,余果,等.细粒尾矿库地下渗流场的数值模拟分析[J].重庆大学学报(自然科学版),2005,28(6):81-83.(YIN Guang-zhi,YU Guo,et al.Numerical calculation analysis about seepage field of fine grained tailings pool[J].Journal of Chongqing University(Natural Science Edition),2005,28(6):81-83.(in Chinese))
[12]DONG Long-jun,PENG Gang-jian,FU Yu-hua,et al.Unascertained measurement classifying model of goaf collapse prediction[J].Journal of Coal Science&Engineering,2008,12(2):221-224.(in Chinese)
[13]董陇军,李夕兵,宫凤强.开采地面沉陷预测的未确知聚类预测模型[J].中国地质灾害与防治学报,2008,19(2):95-99.(DONG Long-jun,LI Xi-bing,GONG Feng-qiang.Predicting surface subsidence induced by mining based on unascertained clustering method[J].The Chinese Journal of Geological Hazard and Control,2008,19(2):95-99.(in Chinese)
[14]陈守义.浅议上游法细粒尾矿堆坝问题[J].岩土力学,1995,16(3):70-76.(CHEN Shou-yi.Some superficial views on the problem of building fine grain tailings fill dams by means of up-stream method[J].Rock and Soil Mechanics,1995,16(3):70-76.(in Chinese))
[15]董陇军,王飞跃.基于未确知测度的边坡地震稳定性综合评价[J].中国地质灾害与防治学报,2007,18(4):74-78.(DONG Long-jun,WANG Fei-yue.Comprehensive evaluation on seismic stability of slopes based on unascertained measurement[J].The Chinese Journal of Geological Hazard and Control,2007,18(4):74-78.(in Chinese))
[2]胡明鉴,郭爱国,陈守义.某上游法尾矿坝抗滑稳定性分析的几点思考[J].岩土力学,2004,25(5):769-773.(HU Ming-jian,GUO Ai-guo,CHEN Shou-yi.Study on anti-sliding stability analysis of some upper reaches method tailings dam[J].Rock and Soil Mechanics,2004,25(5):769-773.(in Chinese))
[3]熊文林,李胡生.岩石样本力学参数值的随机模糊处理方法[J].岩土工程学报,1992,14(6):101-108.(XIONG Wen-ling,LI Hu-sheng.Random fuzzy treating method of rock sample mechanics parameter value[J].Chinese Journal of Geotechnical Engineering,1992,14(6):101-108.(in Chinese))
[4]刘春.边坡工程中岩石力学参数随机模糊选取研究[J].岩土力学,2004,25(6):1327-1329.(LIU Chun.Study on random fuzzy selection of rock mechanics parameter in slope engineering[J].Rock and Soil Mechanics,2004,25(6):1327-1329.(in Chinese))
[5]王鹏.基于随机模糊理论的岩石抗剪参数的确定[J].岩石力学工程学报,2005,24(4):547-552.(WANG Peng.Determining rock shear parameter based on random fuzzy theory[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(4):547-552.(in Chinese))
[6]李胡生.岩石力学参数概率分布的随机模糊估计方法[J].固体力学学报,1993,14(4):347-351.(LI Hu-sheng.Random fuzzy appraisal method in parameter probability distribution of rock mechancs[J].Acta Mechanism Solide Sinica,1993,14(4):347-351.(in Chinese))
[7]李胡生.岩土工程随机模糊可靠度的概念和方法[J].岩土力学,1993,14(2):25-34.(LI Hu-sheng.Concept and method of random fuzzy reliability in geotechnical engineering[J].Rock and Soil Mechanics,1993,14(2):25-34.(in Chinese))
[8]李胡生,熊文林.岩体力学参数的工程模糊处理[J].水利学报,1994,14(1):76-85.(LI Hu-sheng,XIONG Wen-ling.Engineering fuzzy treatment of rock mechanics parameter[J].Journal of Hydraulic Engineering,1994,14(1):76-85.(in Chinese))
[9]OKA Y.System reliability of slope stability[J].Geotech Engineering,1990,106(8):1863-1869.
[10]HU Ming-jian,GUO Ai-guo,CHEN Shou-yi.Reflections on anti-slide stability analysis of a gangue dam[J].Chinese Journal of Rock Mechanics and Engineering,2004,25(5):769-773.
[11]尹光志,余果,等.细粒尾矿库地下渗流场的数值模拟分析[J].重庆大学学报(自然科学版),2005,28(6):81-83.(YIN Guang-zhi,YU Guo,et al.Numerical calculation analysis about seepage field of fine grained tailings pool[J].Journal of Chongqing University(Natural Science Edition),2005,28(6):81-83.(in Chinese))
[12]DONG Long-jun,PENG Gang-jian,FU Yu-hua,et al.Unascertained measurement classifying model of goaf collapse prediction[J].Journal of Coal Science&Engineering,2008,12(2):221-224.(in Chinese)
[13]董陇军,李夕兵,宫凤强.开采地面沉陷预测的未确知聚类预测模型[J].中国地质灾害与防治学报,2008,19(2):95-99.(DONG Long-jun,LI Xi-bing,GONG Feng-qiang.Predicting surface subsidence induced by mining based on unascertained clustering method[J].The Chinese Journal of Geological Hazard and Control,2008,19(2):95-99.(in Chinese)
[14]陈守义.浅议上游法细粒尾矿堆坝问题[J].岩土力学,1995,16(3):70-76.(CHEN Shou-yi.Some superficial views on the problem of building fine grain tailings fill dams by means of up-stream method[J].Rock and Soil Mechanics,1995,16(3):70-76.(in Chinese))
[15]董陇军,王飞跃.基于未确知测度的边坡地震稳定性综合评价[J].中国地质灾害与防治学报,2007,18(4):74-78.(DONG Long-jun,WANG Fei-yue.Comprehensive evaluation on seismic stability of slopes based on unascertained measurement[J].The Chinese Journal of Geological Hazard and Control,2007,18(4):74-78.(in Chinese))
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心