礫石層之沉積特徵及量化描述方法嘗試

Sedimentary Characteristics and Tentative Quantitative Description Methods for Gravel Deposits

王文祥(Wen-Hsiang Wang)

《地工技術》 55期 (1996/06) Pp. 25-34

https://doi.org/10.30140/SG.199606.0002

摘要

礫石層之沈積構造受控於其所處沈積環境中水力、深度、河床形態等因素，在同一沈積環境中也會有許多不同沈積構造出現。就一般工程規模討論礫石層邊坡問題時常會忽略到礫石層本身沈積環境及沈積構造，其在空間上的變化會對工程設計與施工有著重要的影響，甚或針對礫石層邊坡的調查工作也殊少考慮以上關係。所以目前學者對礫石層邊坡工程性質上有許多歧異看法，其根本原因在於調查記錄方式尚未標準化。本文參考許多前輩的研究成果，嘗試自沈積學角度切入，在簡單介紹礫石層之沈積環境及沈積構造外，依據這些沈積學上的特徵建議一套礫石層量化描述方法以供參考。

關鍵字

礫石層 ； 沈積構造

並列摘要

Sedimentary structures of gravel deposits are modified by hydraulics, water depth, bedloads etc. of the environments, even in one single area the facies shift very frequently. The sedimentary facies and structures are easily neglected during the discussion of gravel slopes in engineering design, or in the investigating processes. Therefore, different opinions arise, and the actual reason is that gravel slopes are not uantitatively described. After a brief introduction of sedimentary facies and structures of gravel deposits, this paper attempts to suggest one set of quantitative description methods for gravel slopes.

並列關鍵字

gravel deposits ； sedimentary structure