深圳碧海湾公园花岗岩风化球分布规律及运动特征  

Research on the Distribution Regularities and the Movement Characteristics of Weathered-granite Spheres in Bihaiwan Park in Shenzhen

作　　者：苗博泉 杨继红[1] 王明龙 

机构地区：[1]华北水利水电大学,河南郑州450045 [2]深圳市地质环境监测中心,广东深圳518034

出　　处：《华北水利水电大学学报（自然科学版）》2014年第6期69-73,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：中国科学院工程地质力学重点实验室开放基金资助项目(2008-06)

摘　　要：在对深圳市碧海湾公园花岗岩风化球进行现场调查的基础上,统计分析了花岗岩风化球的分布规律,并结合地质资料分析了花岗岩球状风化的成因,然后选取特征风化球对其失稳后的破坏能量进行定量计算,同时采用Rockfall软件对风化球失稳后的运动轨迹、落点分布、弹跳高度及冲击能量进行了模拟和分析.结果表明：研究区内花岗岩风化球均分布在高程40~80 m、坡度30°~70°的边坡上;其失稳后的落点分布和弹跳高度与其质量大小关系不大,仅与边坡坡面形态有关,而其冲击能量基本随质量线性增加.Based on the field survey of weathered-granite spheres in Bihaiwan park in Shenzhen, the distribution regularities of weath- ered-granite spheres were statistically analyzed. Meanwhile, the causes of granite＇s spherically weathering were researched combining with geological data. Furthermore, the calculation of the impact energy after losing stability was done by the selection of a representa- tive weathered-granite sphere. Moreover, the Rockfall software was introduced in order to simulate the movement trails, the failing point distribution, the bounce height and the impact energy. The results show that all weathered-granite spheres in this area have a dis- tribution on the slopes with the elevation of 40 to 80 meters （Yellow Sea elevation） and angle of 30 to 70 degrees. Moreover, there is little correlation between the falling point distribution and the bounce height with their qualities, but there is only relevant with the form of the slope, and their impact energies linearly increase with their qualities.

关 键 词：花岗岩风化球 分布规律 成因 运动特征 Rockfall软件 

分 类 号：P642.24[天文地球—工程地质学] P694[天文地球—地质矿产勘探]