@article{oai:niigata-u.repo.nii.ac.jp:00028198, author = {藤田, 至則}, journal = {新潟大学積雪地域災害研究センター研究年報, 新潟大学積雪地域災害研究センター研究年報}, month = {Nov}, note = {In the study of the result of the Mushigame landslide investigation (FUJITA et al., 1981; KUNIYASU et al., 1982), the present authors have reached the following conclusion: 1. The landslide debris is separated into small blocks by parallel normal faults and crossed normal faults (Fig. 2). The cause of this feature has been successfully confirmed by means of the visco-plastic model experiment (Fig. 10). 2. Within one landslide area are found groups of small blocks composed of parallel normal faults on the upstream side and crossed normal faults on the downstream side that occur in pairs (Figs. 2, 6, 7, 8). A group of such small blocks is called a medium block in this paper. Mode of occurrence of the medium block has been confirmed also by the visco-plastic model experiment (Fig. 10). From the above standpoint, the authors surveyed three areas of landslide in Niigata Prefecture-Kamibanba of Arai-city, Nigorisawa of Nagaoka-city, and Nakamaruke of Sekikawa-mura with the results as follows: a) No phenomenon contradictory to the views given in the foregoing 1~2 was recognized in these landslide areas. b) It was proved that the landslide debris belongs to the recurred landslide of older times. c) Some of the small~medium blocks or the landslide debris seem to be reactivated older landslide blocks. d) It is possible that the parallel normal faults in the upstream parts and in the topmost parts of medium blocks have attained to a considerable depth, and the normal faults in these parts may cause sliding again. e) The authors have proceeded with their work based on a viewpoint that the occurrence of multiple medium blocks is attributable to a rise of the basement of the landslide area, but they have not succeeded in verifying this view as yet.}, pages = {35--50}, title = {地すべり崩積土ブロックに関する研究}, volume = {4}, year = {1982} }