摘要
以赫章县高位隐蔽性地质灾害隐患专业排查报告资料为依据,以前人在此方面的研究成果为技术依托,对赫章县各地质灾害发育特征进行分形理论研究,利用各地质灾害隐患点分布的分维值计算结果来表征地质灾害发育的复杂程度,计算结果为:赫章县整体地质灾害隐患点分布的分维值为0.7657,相关系数为0.9318;滑坡隐患点分布的分维值为0.6038,相关系数为0.9419;崩塌隐患点分布的分维值为0.3907,相关系数为0.8434;地面塌陷隐患点分布的分维值为0.2334,相关系数为0.9223;相关系数的值都在0.84之上,表明赫章县地质灾害隐患点发育具有分形特征。研究区内滑坡隐患点分布的分维值>崩塌>地面塌陷,表明区内滑坡最发育,崩塌次之,地面塌陷发育程度相对最低。三类灾害中滑坡分布的分维值最接近区内整体地质灾害隐患点的分维值,说明研究区地质灾害发育复杂程度主要受滑坡隐患点的控制,其他隐患点对其控制程度相对较低。研究结果有助于深化对地质灾害的认识,为赫章县地质灾害预测预防提供了一定依据。
On the basis of altitudes cryptic geological hazard hidden trouble professional screening report data from the Hezhang County,taking the previous study results as technical support have carried out geological hazard development features fractal theoretical study.Using geological hazard hidden trouble spots distribution fractal dimension value computed results characterized geological hazard development complexity.Computed results have whole Hezhang County geological hazard hidden trouble spots distribution fractal dimension value is 0.7657,correlation coefficient 0.9318;landslide hidden trouble spots distribution fractal dimension value is 0.6038,correlation coefficient 0.9419;collapse hidden spots distribution fractal dimension value is 0.3907,correlation coefficient 0.8434;surface subsidence hidden trouble spots distribution fractal dimension value is 0.2334,correlation coefficient 0.9223;thus correlation coefficients are all above 0.84,made known the development of Hezhang County geological hazard hidden trouble spots have fractal features.Study area landslide hidden trouble spots distribution fractal dimension value is lager than that of collapse and surface subsidence and made known that landslide in the area is most developed,collapse the second and surface subsidence relatively lowest.Among them,landslide distribution fractal dimension value is closest to area’s whole geological hazard hidden trouble spot fractal dimension value,that indicate study area geological hazard development complexity is mainly controlled by landslide hidden trouble spots,other’s relatively low.The results have contribute to deepen geological hazard cognition,provided certain basis for geological hazard prediction and prevention in Hezhang County.
作者
郭志军
谢红东
艾灿伟
Guo Zhijun;Xie Hongdong;Ai Canwei(No.174 Exploration Team,Guizhou Bureau of Coal Geological Exploration,Guiyang,Guizhou 550081)
出处
《中国煤炭地质》
2019年第9期70-74,共5页
Coal Geology of China
基金
贵州省赫章县高位隐蔽性地质灾害隐患专业排查(黔府办函[2017]191号-19)
关键词
地质灾害
滑坡
崩塌
地面塌陷
分维值
相关系数
geological hazard
landslide
collapse
surface subsidence
fractal dimension value
correlation coefficient
