被りの浅い砂質地山におけるトンネル周辺の沈下挙動
1987 年 1987 巻 388 号 p. 151-160
詳細
1987 年 1987 巻 388 号 p. 151-160
To construct safely and economically a shallow tunnel with shotcrete and rockbolts, we have to understand the basic ground behaviour around the tunnel. This paper deals with the field measurement results as to settlement behaviour of ground above nine shallow tunnels in diluvial sand.
From the view point of tunnel advance, eleven typical phenomena were recognized on and in the ground associated with the construction procedures in case that shotcrete and rockbolts were adopted as main support members. They apparently show the importance of focusing on the phenomena along tunnel alignment and their interdependence in all direction in the ground. Hence they also proved to be effective information to assess qualitatively the ground condition, support design and construction procedure.
