{"title":"Consideration on Wide Area Land Subsidence of the Muikamachi Basin by Groundwater Use in Winter","authors":"S. Ohtsuka, A. Urabe, H. Kurita","doi":"10.5110/jjseg.61.38","DOIUrl":"https://doi.org/10.5110/jjseg.61.38","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131508306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Publishing “Solar Power Generation in Japan”","authors":"Akira Otani","doi":"10.5110/jjseg.61.2","DOIUrl":"https://doi.org/10.5110/jjseg.61.2","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125733540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On-The-Job Training to Recognize Nontectonic Structures in the Field: A Tentative Case Study of In-House Continuing Professional Educations for Engineering Geologists","authors":"Tadashi Araya, Y. Shimizu, M. Yamane","doi":"10.5110/jjseg.60.280","DOIUrl":"https://doi.org/10.5110/jjseg.60.280","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129246115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Challenges and Approaches in the Field of Engineering Geology in the Age of Declining Birthrate and Aging Society","authors":"M. Fukutomi","doi":"10.5110/jjseg.60.285","DOIUrl":"https://doi.org/10.5110/jjseg.60.285","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130489968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Technical Education in Engineering Geology With Construction Consultant","authors":"A. Yamamoto","doi":"10.5110/jjseg.60.273","DOIUrl":"https://doi.org/10.5110/jjseg.60.273","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128972208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efforts for Passing Down Technical Knowledge and Skills in Field of Civil Engineering Geology","authors":"Yoshihira Nishiyanagi","doi":"10.5110/jjseg.60.293","DOIUrl":"https://doi.org/10.5110/jjseg.60.293","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129882190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Origin and Classification of the Surface Soils by Some Color Analyses","authors":"S. Endo, Yuki Kajihara, T. Yamanoi","doi":"10.5110/jjseg.60.216","DOIUrl":"https://doi.org/10.5110/jjseg.60.216","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121043020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Understanding the characteristics and long-term behavior of water-conducting fractures is important for the safety assessment of deep underground facilities in the plutons of an orogenic belt. This study describes the features of fractures and their fillings along with the long-term behavior of their hydrogeological structures in an underground environment based on the results of a geological investigation conducted at an underground facility in northern Kyushu. Fractures were classified into five groups on the basis of fracture orientation：A, B, C, D, and low-angle groups. The fractures in all groups are filled with epidote and quartz, which are formed at high temperature：from about 300 to 350 o C. Thus, the genesis of all fractures is the cooling process of granodiorite pluton. Almost all of the water-conducting fractures are included in the B group. Because a number of fracture fillings in the B group are filled by prehnite and crushed fragments of epidote and quartz, the fractures in this group alternated sealing and re-opening. The fracture characteristics in the B group are follow as：accompanying many alteration halos, long trace length, and cutting off other fractures. These results indicate that fractures in the B group have possibly functioned as pathways for groundwater flow in the long term.
{"title":"Characteristics and Formation Process of Fractures in Crystalline Rocks in Northern Kyushu","authors":"Hiroaki Murakami, M. Ashizawa, Kazuhiro Tanaka","doi":"10.5110/JJSEG.59.2","DOIUrl":"https://doi.org/10.5110/JJSEG.59.2","url":null,"abstract":"Understanding the characteristics and long-term behavior of water-conducting fractures is important for the safety assessment of deep underground facilities in the plutons of an orogenic belt. This study describes the features of fractures and their fillings along with the long-term behavior of their hydrogeological structures in an underground environment based on the results of a geological investigation conducted at an underground facility in northern Kyushu. Fractures were classified into five groups on the basis of fracture orientation：A, B, C, D, and low-angle groups. The fractures in all groups are filled with epidote and quartz, which are formed at high temperature：from about 300 to 350 o C. Thus, the genesis of all fractures is the cooling process of granodiorite pluton. Almost all of the water-conducting fractures are included in the B group. Because a number of fracture fillings in the B group are filled by prehnite and crushed fragments of epidote and quartz, the fractures in this group alternated sealing and re-opening. The fracture characteristics in the B group are follow as：accompanying many alteration halos, long trace length, and cutting off other fractures. These results indicate that fractures in the B group have possibly functioned as pathways for groundwater flow in the long term.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125834942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yoshihiro Tanaka, M. Kametaka, K. Okazaki, Kazushige Suzuki, K. Seshimo, K. Aoki, K. Shimada, Takahiro Watanabe, Kazuhiko Nakayama
This paper aims to develop a methodology for understanding the fault activity by observing exposed fault planes without covering younger strata. Based on purpose, faults developed in relatively homogeneous rocks such granitic types are investigated as follows; Gosuke Dam upstream outcrop of Gosukebashi Fault and Funasaka-nishi outcrop of Rokkou Fault were selected for the study of an active fault; and K-3 outcrop of Rokkou Houraikyo Fault was chosen for a non-active fault. The fault planes were examined under the three categories of continuity, cutting of older texture of the fault zone, and smoothness. These three categories were considered according to the following five measurements, with the third being subdivided into three ： （1）continuity ratio; （2）cut ratio of the older existing texture/strata; （3）planarity ratio; （4）roughness/undulation measurement; and （5）arithmetic average roughness obtained from photographic analysis. Of the five measurements, the first three have the potential to discern the threshold between active and non-active faults. Further examination and discussion are required to clarify their applicability as parameters for fault activity evaluation.
{"title":"Examination of Evaluation Method for Fault Activity Based on Morphological Observation of Fault Planes","authors":"Yoshihiro Tanaka, M. Kametaka, K. Okazaki, Kazushige Suzuki, K. Seshimo, K. Aoki, K. Shimada, Takahiro Watanabe, Kazuhiko Nakayama","doi":"10.5110/JJSEG.59.13","DOIUrl":"https://doi.org/10.5110/JJSEG.59.13","url":null,"abstract":"This paper aims to develop a methodology for understanding the fault activity by observing exposed fault planes without covering younger strata. Based on purpose, faults developed in relatively homogeneous rocks such granitic types are investigated as follows; Gosuke Dam upstream outcrop of Gosukebashi Fault and Funasaka-nishi outcrop of Rokkou Fault were selected for the study of an active fault; and K-3 outcrop of Rokkou Houraikyo Fault was chosen for a non-active fault. The fault planes were examined under the three categories of continuity, cutting of older texture of the fault zone, and smoothness. These three categories were considered according to the following five measurements, with the third being subdivided into three ： （1）continuity ratio; （2）cut ratio of the older existing texture/strata; （3）planarity ratio; （4）roughness/undulation measurement; and （5）arithmetic average roughness obtained from photographic analysis. Of the five measurements, the first three have the potential to discern the threshold between active and non-active faults. Further examination and discussion are required to clarify their applicability as parameters for fault activity evaluation.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126416117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Nakazato, Keisuke Inoue, Michiaki Konno, Goichi Itoh, Toru Sato
The authors introduce the automatic displacement monitoring system for the large-scale landslide using GPS and the long term monitoring result. In this case, the adoption of a long-term monitoring system with GPS was examined to observe the movement of an active landslide before and after the countermeasure construction. However, because the object landslide slope was northward, the applicability evaluation by a manual observation was carried out beforehand. Moreover, the characteristic of the GPS interferometric positioning to the displacement monitoring was understood by the experiments. The GPS monitoring system was composed of the one datum point at the stable ground and the five moving points in the landslide area, and began the continuous observation in October, 2003. The power supply of each station was a solar battery. At first, the cellular phones were used for online data transfer, afterwards they were changed to the wireless LAN lines. This system was able to clarify the large displacements by the heavy rain in 2004, and calming down of landslide activity according to the countermeasure construction. In addition, the effectiveness of the tropospheric delay correction that used meteorological data was shown to the annual change that appeared to the vertical component of the displacements.
{"title":"Long Term Automatic Displacement Monitoring of Large Scale Landslide Using GPS","authors":"H. Nakazato, Keisuke Inoue, Michiaki Konno, Goichi Itoh, Toru Sato","doi":"10.5110/JJSEG.58.402","DOIUrl":"https://doi.org/10.5110/JJSEG.58.402","url":null,"abstract":"The authors introduce the automatic displacement monitoring system for the large-scale landslide using GPS and the long term monitoring result. In this case, the adoption of a long-term monitoring system with GPS was examined to observe the movement of an active landslide before and after the countermeasure construction. However, because the object landslide slope was northward, the applicability evaluation by a manual observation was carried out beforehand. Moreover, the characteristic of the GPS interferometric positioning to the displacement monitoring was understood by the experiments. The GPS monitoring system was composed of the one datum point at the stable ground and the five moving points in the landslide area, and began the continuous observation in October, 2003. The power supply of each station was a solar battery. At first, the cellular phones were used for online data transfer, afterwards they were changed to the wireless LAN lines. This system was able to clarify the large displacements by the heavy rain in 2004, and calming down of landslide activity according to the countermeasure construction. In addition, the effectiveness of the tropospheric delay correction that used meteorological data was shown to the annual change that appeared to the vertical component of the displacements.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"11 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131435347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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