It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stabil...It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stability of rock surrounding underground hydro-powerhouses under complex geological conditions.In this study,the spatial and temporal coordinated deformation control of HSBT zones was addressed from the aspects of the deformation mechanism,failure characteristics,and control requirements,and some coordinated deformation control technologies were proposed.On this basis,a case study was conducted on the deformation control of the HSBT zone of the underground powerhouse at the Wudongde hydropower station,China.The results showed that the relationship between excavation and support,and the mismatch of deformation and support of the surrounding rock mass in the HSBT zone of underground caverns with a large span and high in-situ stress can be appropriately handled.The solution requires proper excavation and construction procedures,fine blasting control,composite and timely support,and real-time monitoring and dynamic feedback.The technologies proposed in this study will ensure the safe,high-quality,and orderly construction of the Baihetan and Wudongde underground caverns,and can be applied to other similar projects.展开更多
随着电力市场的放松管制,智能配电网(smart distribution network,SDN)的投资建设将由电网企业独立承担向多元主体共同参与的模式转变。传统基于单一个体的评价模式已不能满足上述背景下SDN规划决策的需要。为此,研究并提出了能够适应...随着电力市场的放松管制,智能配电网(smart distribution network,SDN)的投资建设将由电网企业独立承担向多元主体共同参与的模式转变。传统基于单一个体的评价模式已不能满足上述背景下SDN规划决策的需要。为此,研究并提出了能够适应上述市场化格局的SDN规划方案综合评价指标体系与评价方法。首先,在全面分析放松管制条件下SDN投资参与格局的基础上,根据不同主体的利益需求,构建了包括目标层、主体层、需求层、属性层及指标层在内的SDN规划综合评价指标体系。在此基础上,通过深入挖掘多边参与模式下SDN规划决策的内涵特征,进一步提出了基于协同群决策的综合评价模型。所提模型采用组合加权的算数平均算子对个体偏好进行集结,以群体满意度与个体利益一致性综合最优作为目标,通过信息交互和意见权重的动态调整,以实现参与个体与群体利益的协调统一。算例分析验证了所提方法体系的合理性和有效性。展开更多
基金This work is supported by the National Natural Science Foundation of China(Nos.51979146 and 12102230)the China Three Gorges Corporation Research Program(Nos.WDD/0490,WDD/0578,and BHT/0774)the China Postdoctoral Science Foundation(No.2022M711862).
文摘It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stability of rock surrounding underground hydro-powerhouses under complex geological conditions.In this study,the spatial and temporal coordinated deformation control of HSBT zones was addressed from the aspects of the deformation mechanism,failure characteristics,and control requirements,and some coordinated deformation control technologies were proposed.On this basis,a case study was conducted on the deformation control of the HSBT zone of the underground powerhouse at the Wudongde hydropower station,China.The results showed that the relationship between excavation and support,and the mismatch of deformation and support of the surrounding rock mass in the HSBT zone of underground caverns with a large span and high in-situ stress can be appropriately handled.The solution requires proper excavation and construction procedures,fine blasting control,composite and timely support,and real-time monitoring and dynamic feedback.The technologies proposed in this study will ensure the safe,high-quality,and orderly construction of the Baihetan and Wudongde underground caverns,and can be applied to other similar projects.
文摘随着电力市场的放松管制,智能配电网(smart distribution network,SDN)的投资建设将由电网企业独立承担向多元主体共同参与的模式转变。传统基于单一个体的评价模式已不能满足上述背景下SDN规划决策的需要。为此,研究并提出了能够适应上述市场化格局的SDN规划方案综合评价指标体系与评价方法。首先,在全面分析放松管制条件下SDN投资参与格局的基础上,根据不同主体的利益需求,构建了包括目标层、主体层、需求层、属性层及指标层在内的SDN规划综合评价指标体系。在此基础上,通过深入挖掘多边参与模式下SDN规划决策的内涵特征,进一步提出了基于协同群决策的综合评价模型。所提模型采用组合加权的算数平均算子对个体偏好进行集结,以群体满意度与个体利益一致性综合最优作为目标,通过信息交互和意见权重的动态调整,以实现参与个体与群体利益的协调统一。算例分析验证了所提方法体系的合理性和有效性。
