フラクチャーネットワークモデルの開発
解析の考え方 (その1)
1994 年 35 巻 3 号 p. 104-115
詳細
1994 年 35 巻 3 号 p. 104-115
It has been pointed out that ground water in a fractured rock mass is mainly flowing in a three dimensionalnetwork of channels. A technique for modeling this network on the basis of the geologic structures of the majorfractures is proposed in this paper. It is assumed that the channel is defined as the open part and/or the part inwhich many small fractures are concentrated on these major fractures. Some geologic structures that can formthose parts are also studied. A new computer code named “Don-Chan” was newly developed for analysis of theground water flow and the tracer migration in the 3-D channel network. The largest advantage of this computercode is the short calculation time. Because the trial calculation using a 3-D channel network model can be rapidlycarried out, this code is fit for the trial-and-error analysis used for improving the network model. The groundwater flow around a tunnel in an idealized fractured rock was successfully calculated within a short time.
