Influence of Facies and Microscopic Structures on Resistance of Sandy Ground against Seepage Water

DOI Web Site 44 References

Bibliographic Information

Other Title
  • 層相および微視的構造が浸透水に対する砂質土地山の抵抗性に及ぼす影響
  • ソウソウ オヨビ ビシテキ コウゾウ ガ シントウスイ ニ タイスル サシツド ジヤマ ノ テイコウセイ ニ オヨボス エイキョウ

Search this article

Abstract

 A collapse of a tunnel face by seepage water often occurs in sandy ground. In previous studies, a resistance of sandy ground against seepage water was studied in view of soil mechanics. In addition, it was conceivable that the resistance of sandy ground against the seepage water was influenced by geological conditions. However, the influence of geological conditions was not studied. Therefore to understand geologic factors on the resistance of sandy ground against the seepage water, we examined soil physical properties and observed facies and microscopic structure of undisturbed sandy samples obtained from Pleistocene sand layers. The resistance of the sandy ground against the seepage water had good correlation with the clay content, the coefficient of uniformity and the cohesion. As a result of examining geological factors concerning to these physical properties, it became clear that the coefficient uniformity was related with sedimentary environment. Moreover the cohesion was different by the amount of clay minerals and cement materials covering up sand fabrics, and it was affected by the diagenesis. We concluded that sedimentary environment and diagenesis influenced the resistance of the sandy ground against the seepage water.

Journal

References(44)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top