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自适应对数螺旋路径萤火虫算法反演瑞雷面波频散曲线
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作者 刘国鑫 沈鸿雁 +4 位作者 车晗 王鑫 李庆春 李欣欣 赵静 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2023年第7期3011-3025,共15页
瑞雷面波技术是浅地层地质勘探的重要手段之一,通过瑞雷面波频散曲线反演可有效获得地下横波速度模型.然而,瑞雷面波频散曲线反演具有多参数、多极值和非线性等特点,面对复杂地震-地质条件下的瑞雷面波资料处理,传统方法难以快速、精确... 瑞雷面波技术是浅地层地质勘探的重要手段之一,通过瑞雷面波频散曲线反演可有效获得地下横波速度模型.然而,瑞雷面波频散曲线反演具有多参数、多极值和非线性等特点,面对复杂地震-地质条件下的瑞雷面波资料处理,传统方法难以快速、精确地对地层参数进行反演和重建.本文将自适应对数螺旋路径萤火虫算法(Adaptive Logarithmic Spiral-Lévy Firefly Algorithm,简称ALSL-FA)引入到瑞雷面波频散曲线反演中,有效解决了经典萤火虫算法(Firefly Algorithm,简称FA)精于探索,疏于开发的缺点.ALSL-FA集成了对数螺旋引导萤火虫路径,并在搜索过程中通过自适应切换因子实现了全局搜索与局部开发自适应切换,在增强局部开发能力的同时,确保了全局搜索的能力.通过Rastrigin函数求解,对比分析了FA、Lévy飞行萤火虫算法(Lévy Flying Firefly Algorithm,简称LF-FA)和ALSL-FA的运算性能;通过速度递增和含高速硬夹层地质模型的瑞雷面波频散曲线反演,比较了人工蜂群算法(Artificial Bee Colony algorithm,简称ABC)、FA、LF-FA和ALSL-FA的反演结果,验证了本文方法的正确性和抗噪能力,并进一步应用于一套实际瑞雷面波资料反演处理.研究结果表明,本文方法有效弱化了对初始模型的依赖,并进一步提高了反演的精度,具有较强的全局寻优能力和局部开发能力,同时兼备良好的抗噪性能. 展开更多
关键词 瑞雷面波 频散曲线 自适应对数螺旋路径 萤火虫算法 非线性反演 横波速度 浅地层结构
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Experience of Sponge City Master Plan: A Case Study of Nanning City
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作者 Zhang Wei Wang Jiazhuo +5 位作者 che han Wang chen Zhang Chunyang Shi Lian Fan Jin Li Caige(译) 《China City Planning Review》 CSCD 2017年第3期40-49,共10页
As a new urban development pattern, the construction of sponge cities has been deeply integrated into the new urbanization and water safety strategy. Nanning City, as one of the first batch of experimental sponge citi... As a new urban development pattern, the construction of sponge cities has been deeply integrated into the new urbanization and water safety strategy. Nanning City, as one of the first batch of experimental sponge cities in China, has undertaken exploration and practice on sponge city planning, construction, and management. The sponge city master plan of Nanning City establishes an urban ecological spatial pattern in order to protect the security of the sponge base. The sponge city construction strategy has also proposed an overall construction strategy of a sponge city in line with urban development features. Through the systematic analysis and planning, a "23+10+202" pattern of sponge city construction has been formed. "23" represents 23 drainage basins, in which major sponge facilities such as storage facilities, waterfront buffer zones, wetland parks, ecological rainwater corridor and sponge parks are allocated. "10" represents 10 sponge functional zones, which provide important reference for the establishment of sponge city construction index system. "202" represents 202 management units, which decomposes the general objective and provides technical support not only for sponge city construction and management, but also for the implementation of general objectives in the regulatory plan as well. 展开更多
关键词 sponge city master plan Nanning City
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