SOME PROBLEMS CONCERNING THE SOIL STABILIZATION BY MEANS OF SAND-DRAIN

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  • サンドドレーンによる地盤改良の問題点
  • サンドドレーン ニヨル ジバン カイリョウ ノ モンダイテン

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Among the vertical drains for stabilizing the soft clay ground, the sand-drain is most widelyused in this country. We have now, however, several controversial problems concerning the me-chanism of soil stabilization by sand-drain. In this paper some discussions are orientated to thepoints of importance in this area. Those are (1) the consolidation of ground during installationof sand column, (2) the consolidation by surcharge on the ground composed of sand-drain, and(3) the mechanism of strength increase in the clay ground.

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