推移確率とエントロピーを用いた平野部地下地質の定量的は握と地盤のモデル化　　埼玉県所沢，わしの宮コアボーリング柱状図の解析例

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タイトル別名
  • Evaluation and Idealization of Geologic Succession under Wide Negene Sedimentary Basin by the Use of Markov Matrix and its Entropy
  • スイイ カクリツ ト エントロピー オ モチイタ ヘイヤブ チカ チシツ ノ
  • 埼玉県所沢, 鷲宮コアボーリング柱状図の解析例

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抄録

Proper idealization of geologic succession at the depth of Neogene sedimentary basin is indespensable to solve many problems in the field of Engineering Geology such as land subsidence, groundwater flow and stress distribution around deep excavation.<BR>A new procedure to idealize the succession by means of Markov matrix and its entropy of stratigraphic columns obtained from bore hole logs is given. As an application of this procedure, Markov matrix and its entropy are calculated from many stratigraphic columns obtained from two core boring logs and non core boring logs of over 300 in the east plain area of Saitama prefecture, Japan, with following results.<BR>(1) Markov matrix and its entropy represent well the regularity in the stratigraphic columns.<BR>(2) Some regional differences of the regularity are found in the area, and these differences seem to be caused by the regional variation of sedimentary environments.<BR>(3) Geologic succession in this area can be simply idealized as the alternation of some thick layers of coarse sediments and those of fine sediments.<BR>It has been clear that the procedure is quite useful to idealize the geologic succession under Neogene sedimentary basin.

収録刊行物

  • 応用地質

    応用地質 23 (1), 33-45, 1982

    一般社団法人 日本応用地質学会

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