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最大有效力矩准则约束下的广西罗阳山地震、地质与地貌效应

张沛全 李冰溯

张沛全, 李冰溯, 2012. 最大有效力矩准则约束下的广西罗阳山地震、地质与地貌效应. 地质力学学报, 18 (1): 79-90.
引用本文: 张沛全, 李冰溯, 2012. 最大有效力矩准则约束下的广西罗阳山地震、地质与地貌效应. 地质力学学报, 18 (1): 79-90.
ZHANG Pei-quan, LI Bing-su, 2012. GEOMORPHOLOGICAL FEATURES IN LUOYANGSHAN AREA, GUANGXI ZHUANG AUTONOMOUS REGION AND ITS RELATIONS WITH THE MAXIMUM EFFECTIVE MOMENT CRITERION. Journal of Geomechanics, 18 (1): 79-90.
Citation: ZHANG Pei-quan, LI Bing-su, 2012. GEOMORPHOLOGICAL FEATURES IN LUOYANGSHAN AREA, GUANGXI ZHUANG AUTONOMOUS REGION AND ITS RELATIONS WITH THE MAXIMUM EFFECTIVE MOMENT CRITERION. Journal of Geomechanics, 18 (1): 79-90.

最大有效力矩准则约束下的广西罗阳山地震、地质与地貌效应

基金项目: 

广西地震局地震科研监测预报合同制课题 091403

详细信息
    作者简介:

    张沛全(1978-), 男, 硕士, 工程师, 活动构造、地震地质与构造地质专业。E-mail:zhangpeiquan2007@126.com

  • 中图分类号: P546;P553;P931.2;P315.2;P931.1

GEOMORPHOLOGICAL FEATURES IN LUOYANGSHAN AREA, GUANGXI ZHUANG AUTONOMOUS REGION AND ITS RELATIONS WITH THE MAXIMUM EFFECTIVE MOMENT CRITERION

  • 摘要: 使用重新调查后的1936年灵山6¾级地震的烈度资料,结合罗阳山西北麓和南麓的河流地貌与地质构造考察,参考该地区裂变径迹年代学资料,探讨了罗阳山地区的地质力学环境。重新调查后的极震区等烈度区有北北西和北东2个优势方向区域,这2个区域围绕北北西向的泗州断层和北东向的寨圩断层展布。在构造与地貌调查中发现:罗阳山山体有地貌隆升表现,并得到了裂变径迹证据支持;罗阳山西北麓山前冲沟具右旋活动表现;泗州断层内部破裂面的倾向以南西向为优势方向,并具顺时针旋转和高倾角特征。地震分布显示:寨圩断层和泗州断层交汇部位的东南侧有小地震密集展布现象。经分析后认为,以上构造地貌现象是最大有效力矩准则约束下的地震、地质和地貌效应。

     

  • 图  1  罗阳山及周边地区地质略图

    Figure  1.  Geological outline map of Luoyangshan Hill and surrounding areas

    图  2  灵山地区地震构造图及1936年6¾级地震烈度分布(根据游象照私人通信材料修改)

    F1—灵山断层;F2—寨圩断层;F3—蕉根坪断层;F4—佛子圩断层;F5—泗州断层;F6—松木岭断层;F7—板露断裂

    Figure  2.  Seismic structural map of Lingshan Hill area and intensity distribution of Lingshan M=6¾ (1936) earthquake in meizoseismal area

    图  3  泗州断层构造剖面图(地点:山秀东2 km)

    Figure  3.  Tectonic profile of Sizhou fault

    图  4  罗阳山前(高垌)冲沟构造地貌特征图

    Figure  4.  Geomorphologic map of the channel in front of Luoyangshang Hill, Gaodong

    图  5  已成为耕植地的老沟沟床(镜头朝北)

    Figure  5.  Cultivated old gully bed in the front of Luoyangshang Hill, Gaodong

    图  6  新沟与老沟沟床位置及其规模上的差异

    (左:镜头朝西南;右:镜头朝西北;黄色箭头示意新沟位置,白线范围示意老沟范围,白色箭头代表古流向)

    Figure  6.  Locations of the modern and old channels and the differences of their scales

    图  7  跌水(左)及其东侧发育在花岗岩里的节理(右)

    Figure  7.  Waterfall in front of Luoyangshang Hill and joints developed in granite on the east of waterfall

    图  8  罗阳山地区地震—地质—地貌的力学机制图

    Figure  8.  Seismology-geology-geomorphology mechanical mechanism at Luoyang Hill area

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