HSU Chung-li,SHIEH Ming-cheng,HSU Hung-ming.Stratum Earth Electrical Resistance Analysis of Landslide Area in Lichi Layer[J].Research of Soil and Water Conservation,2012,19(01):272-276.
利吉层崩塌地地电阻分析
- Title:
- Stratum Earth Electrical Resistance Analysis of Landslide Area in Lichi Layer
- 分类号:
- TM934
- 摘要:
- 台东海岸山脉为利吉层分布地区，常呈裸露而植生不易，又受降雨冲蚀易形成崩塌地滑灾害。本研究针对近年利吉层地区发生之崩塌灾害资料搜集与踏勘，并透过卫星影像进行判释，而选出池上山棕寮及鹿野宝华两案例，进行地层电气探测之相关分析研究。综合研究成果由2004年、2006及2009卫星影像照片崩塌地判释得知：2004年崩塌面积为102 hm2，2006年增加为139 hm2，2009年崩塌面积减少至56.5 hm2，进一步探讨发现2009年坡度20%以下崩塌裸露比例大幅减少，而坡度30%～40%之崩塌则呈现增加趋势，分析坡度20%以上植物不易生长，植生复育速度较缓慢；利吉层分布周围之地层走向为北偏东，以向东南倾斜为主，并紧邻池上断层、鹿野断层及利吉断层，地质变化多样，属较新地质年代，仍处于不稳定之状态；由山棕寮及宝华电气探测结果得知地电阻值皆小于100 mΩ，利吉层地电阻分布可分为崩积层与下方岩层，崩积层电阻较高而泥岩之电阻值则小于35及20 mΩ，整体电阻随深度增加而降低。
- Abstract:
- Lichi Layer is widely distributed in Taitung Coastal Range area. It’s difficult to let plant grow at vegetation exposed area in Lichi layer area, and it is easy to suffer the torrential rainfall influence and have many landslide phenomena. This study aimed at landslide hazard occurred data collection and investigation in Lichi Layer area. Satellite images were executed to distinguishing and explanation on landslide. At the same time, the electrical detection method was used to study the correlation analysis on Shanzongliao and Baohua the sliding phenomenon. According to comprehensive research, the satellite pictures executed to distinguishing and explanation on landslide that found out in 2004, 2006 and 2009, landslide area was 102 hectares in 2004, 139 hectares in 2006 and 56.5 hectares in 2009. Shown in recent years, the trend of recovery of landslide exposed area was covered by vegetation. Due to the electrical detection result in Shanzongliao and Baohua, we could know the overall resistance is less than 100 mΩ. The resistance distribution can be divided the colluvium and mudstone in Lichi layer. Resistance of colluviums fold is high and mudstone resistance is less than 35 and 20 mΩ. The overall resistance decreased with increasing depth.
参考文献/References:
[1] 工研院能资所.崩塌地调查、规划与设计手册 (地滑篇)[M].台湾南投:水土保持局委托编撰, 1992.
[2] 张石角.环境地质基础理论与现场调查实务参考手册[M].台湾南投:水土保持局委托编撰, 2010.
[3] 王湘闵.应用电气探测法探讨新佳阳地滑地之地层分布[D].台湾屏东:屏东科技大学, 2008.
[4] 林志勇.电气检层法应用于崩塌地地层分析之研究[D].台湾屏东:屏东科技大学, 2005.
[5] 李锦育.安通地层滑动区域之调查试验及其机制之研究[D].台湾台中:台湾大学, 1984.
[6] 陈信雄, 陈明杰, 潘明祥, 等.东部泥岩地区浅层地下水与地滑关系之研究[M].台湾南投:水土保持局委托计划报告, 1990.
[7] 许中立.电气探测应用于新佳阳地滑地层调查[J].水保技术, 2009, 4 (1):25-35.
[8] 志村馨.电气探查法[M].日本东京:昭晃堂出版, 1974.
[9] 松井保, 中川要之助, 村井行雄, et al.新しい電氣探查法のトンネル調查への適用性 (その1) 比抵抗トモグラフィー, 比抵抗映像法[J].土質工學研究發表會講演集, 1990, 25 (1/2):217-220.
[10] 徐弘明, 许中立, 谢茗彰, 等.倾斜管变位应用于地滑监测与整治规划[J].坡地防灾学报, 2009, 8 (3):39-55.
备注/Memo
收稿日期:2011-7-18;改回日期:2011-11-26。
作者简介:许中立（1963- ），男，台湾台中人，博士，副教授，主要从事滑坡灾害评估、环境地质灾害调查防治及土壤改良的教学与科研工作。E-mail：clhsu@mail.npust.edu.tw