台东木坑溪集水区潜在崩塌评估准则之建立

 木坑溪集水区位于台东纵谷,为利吉层泥岩之代表地区,地质复杂,地层脆弱。该文依调查之地形、地质与土地利用现况等条件,参考相关学者对于潜在崩塌地评估之论述,进行访谈问卷之设计与调查统计,并作为研究之评估准则。研究结果得知,台东木坑溪集水区现有崩塌地之崩塌危险指数均属于危险等级,不宜随意开发利用。在进行问卷访谈时,区位因子并未被多数受访者所认同,然而现场调查结果却发现多数之崩塌其发生均与区位因子有相当之关联性,因此,该项目因子值得后续研究探讨。由于研究范围的限定,使得某些参数值并无太大差异,若将研究调查范围扩大,将会使得立地条件之影响更为显着。

Classification criteria of potential landslides susceptibility assessment for Mukence watershed

Mukence watershed is located in the East Rift Valley and belongs to the Liji Mudstone area with more complex and unfavorable geologic conditions and weak stratum. This research used the investigative terms of topography, geology, land use condition at present, related discourse of potential landslide evaluation by scholar and specialist, questionnaire investigation and data statistics etc. to establish the criteria of assessment. The results showed that landslides in Mukence watershed belongs to the dangerous degree, thus the arbitrary land use and development should be controlled. In the process of questionnaire investigation, site factor of standard criteria was not identified for most investigation samples and eliminated in this research, but practically it was one of the important factors for differentiated landslide happen and needed continuous researches in this topic. For the reason the limit of studied area, value range of assessment standard criteria were not too great difference, and if the investigation area could be increased, thus many factors of standard criteria will become more obviously.