大規模崩塌之離散數值模擬初探——以獅子山為例
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- 英文论文题名：Preliminary investigation of the deep-seated landslide of discrete element method numerical simulation A case study of the Shih Tzu Shan
- 论文作者：黃韋凱 ; 梁閔智 ; 陳樹群
- 英文论文作者：Weikai-Huang ; Minchih-Liang ; Suchin-Chen ; Disaster Prevention Technology Research Center ; Sinotech Engineering Consultants ; INC ; Taiwan Chung Hsing University ; Institute of Soil and Water Conservation
- 年：2015
- 作者机构：中興工程顧問社;台灣中興大學水土保持學系;
- 论文关键词：大規模崩塌 ; 數值模擬 ; 離散元素 ; 影響範圍
- 英文论文关键词：deep-seated landslide ; numerical simulation ; discrete element ; sphere of influence
- 会议召开时间：2015-09-01
- 会议录名称：2015海峡两岸水土保持学术研讨会论文集（上）
- 英文会议录名称：Proceedings of Cross-strait Symposium on Soil and Water Conservation 2015
- 语种：中文
- 分类号：S157
- 学会代码：OGSJ
- 会议名称：2015海峡两岸水土保持学术研讨会
- 会议地点：中国山西太原
- 主办单位：中国水土保持学会、台湾中华水土保持学会
- 学会名称：中国水土保持学会
- 页数：6
- 文件大小：3220k
- 原文格式：O
- 会议级别：全国
摘要
本研究針對高雄市杉林區新庄聚落獅子山大規模崩塌進行現地調查及崩塌運移模擬,以提供初步防災應變之參考依據。該崩塌地面積約10.3公頃,崩塌邊界最高高程為418公尺,最低高程為210公尺,平面距離為520公尺,坡址距離保全住戶僅有230公尺。根據基本資料蒐集結果,坡度較陡之區位分布於近稜線側及坡趾處,坡度由35度至70度不等,平均坡度為23度。從坡向圖得知本研究區坡向以朝北居多(17.8%),但除朝西與西南向外,其餘八方位分布比例相近,地貌屬丘狀地形(Hummocky relief),可能具早期潛移之跡象。本研究以數值高程模型(Digital Elevation Model)進行地形之建模,採離散元素法數值模擬軟體PFC~(3D)進行分析。崩塌滑動模型部分,則進行遙測影像、現場地質調查,其目的除評估破壞機制外,亦根據現地崩塌材料進行數值模擬參數修正,以建立符合現況之模擬。本研究之大規模崩塌模擬結果提出可能的影響範圍、疏散避難與保全對象劃設等工作,以指出該區域初步之危險坡地聚落防減災目標。
Our research focused on the deep-seated landslide which occurred on Shih Tzu Shan,Xinzhuang,Shanling District,Kaoshiung.This study conducted field investigation and landslide transport simulation to provide initial emergency response for reference.The landslide area is about 10.3 hectares,with the highest elevation of landslide boundary is 418 m,the lowest elevation is 210 m,and the direct distance is 520 m,between the protected targets just only 230 m.According to the results of basic data collection,the distribution of steepest area is at the site near ridge and at the toe,and the range of slope values in degrees is 35° to 70°,and the average degree is 23°.According to the slope aspect diagram,the majority slope aspect in the study area is north(17.8%),while remaining eight azimuth has approximate distribution proportion except the westward and southwestward.The landform of study area is similar to hummocky relief,which shows the signs of creeping.In this study,we use Digital Elevation Model to model the terrain,and analyze with discrete element method numerical simulation software PFC~(3D).In the part of collapse sliding model,we conducted the telemetry image and field geological survey,which aims to estimate the failure mechanism,but also revise the numerical modeling parameter in accordance with field collapse material in order to establish a simulation conformed to the current situation.The results show that the deep-seated landslide simulation propose the possible affected range,evacuation and the delimit of protected targets,etc,and therefore further indicate the preliminary hazardous slope of those area to reach the target of disaster prevention and alleviation.
Our research focused on the deep-seated landslide which occurred on Shih Tzu Shan,Xinzhuang,Shanling District,Kaoshiung.This study conducted field investigation and landslide transport simulation to provide initial emergency response for reference.The landslide area is about 10.3 hectares,with the highest elevation of landslide boundary is 418 m,the lowest elevation is 210 m,and the direct distance is 520 m,between the protected targets just only 230 m.According to the results of basic data collection,the distribution of steepest area is at the site near ridge and at the toe,and the range of slope values in degrees is 35° to 70°,and the average degree is 23°.According to the slope aspect diagram,the majority slope aspect in the study area is north(17.8%),while remaining eight azimuth has approximate distribution proportion except the westward and southwestward.The landform of study area is similar to hummocky relief,which shows the signs of creeping.In this study,we use Digital Elevation Model to model the terrain,and analyze with discrete element method numerical simulation software PFC~(3D).In the part of collapse sliding model,we conducted the telemetry image and field geological survey,which aims to estimate the failure mechanism,but also revise the numerical modeling parameter in accordance with field collapse material in order to establish a simulation conformed to the current situation.The results show that the deep-seated landslide simulation propose the possible affected range,evacuation and the delimit of protected targets,etc,and therefore further indicate the preliminary hazardous slope of those area to reach the target of disaster prevention and alleviation.
引文
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[4]Potyondy D,Cundall P.(2004)Ahonded-Particle Model for Rock[J].International Journal of Rock Mechanics&Mining Sciences,2004,41:329-1364
[5]俞旗文.利用取樣岩心量測岩石現地應力的技術[J],中興工程,工程技術,2007,94:14-15
[6]Serafim J L,Pereira J P.Consideration of the Geomechanical Classification of Bieniawski[M].Proceedings International Symposium on Engineering Geology and Underground Construction,Lisbon,1983,(2)?33-44
[7]林慶偉.2013年高屏溪山坡地大規模崩塌致災潛勢調查評估[R].台灣「行政院農委會水土保持局」,2013:90-91
[8]中興工程顧問公司.易淹水地區上游集水區地質調查與資料庫建置第一階段實施計畫-集水區水文地質對坡地穩定性影響之調查評伯報告[R].經濟部中央地質調查所,台灣,2008
[9]詹恕齊.長枝坑層砂岩是内預應力試驗推估方法之研究[D].台灣成功大學土木工程所碩士論文,2008:71-72
[2]Hoek E.Strength of Rock and Rock Masses[J].News Journal ISRM,1994,2(2):4-16
[3]Itasca Consulting Group Inc.PFC3D Particle Flow Code in 3 Dimensions[Z],User's Guide,Minneapolis,USA,2002
[4]Potyondy D,Cundall P.(2004)Ahonded-Particle Model for Rock[J].International Journal of Rock Mechanics&Mining Sciences,2004,41:329-1364
[5]俞旗文.利用取樣岩心量測岩石現地應力的技術[J],中興工程,工程技術,2007,94:14-15
[6]Serafim J L,Pereira J P.Consideration of the Geomechanical Classification of Bieniawski[M].Proceedings International Symposium on Engineering Geology and Underground Construction,Lisbon,1983,(2)?33-44
[7]林慶偉.2013年高屏溪山坡地大規模崩塌致災潛勢調查評估[R].台灣「行政院農委會水土保持局」,2013:90-91
[8]中興工程顧問公司.易淹水地區上游集水區地質調查與資料庫建置第一階段實施計畫-集水區水文地質對坡地穩定性影響之調查評伯報告[R].經濟部中央地質調查所,台灣,2008
[9]詹恕齊.長枝坑層砂岩是内預應力試驗推估方法之研究[D].台灣成功大學土木工程所碩士論文,2008:71-72