Layered internal structure and breaching risk assessment of the Higashi-Takezawa landslide dam in Niigata, Japan

Wang, Gonghui; Furuya, Gen; Zhang, Fanyu; Doi, Issei; Watanabe, Naoharu; Wakai, Akihiko; Marui, Hideaki

doi:10.1016/j.geomorph.2016.05.021

Cited by 35 publications

(18 citation statements)

References 43 publications

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“…The characterization of landslide that has significant influence of landslide i.e surface material, landuse, slope and rainfall which have significant influence each others. Landslides will increase in thick soil material and unconsolidated soil [8]. Inappropriate of land use on thick soils which has high inclination of slope will increase the potential for landslides.…”

Section: Landslide Characterization In the Study Areamentioning

confidence: 99%

Local Agroforestry as Landslide Mitigation in the Gede Catchment in Malang Regency

Muddarisna¹,

Yuniwati²,

Masruroh³

et al. 2019

Proceedings of the Proceedings of the 1st International Conference on Environment and Sustainability Issues, ICESI 2019, 18-19

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Gede catchment is the part of Bromo Volcano System. It is located in the Malang Regency, East Java Province. The wide of Gede Catchment is around 17 Km 2. Based on the landslide prone area mapping, this area has high potential landslide around 52,9%. There were several landslides which had been occurred in this area. Based on the physical condition, this area is rather not appropriate for living. In the other hand, the community had been survived to live in harmony with high potential landslide prone area. The aim of paper is to elaboration of community adaptation strategies which had been survived in landslide prone area.The method was carried by field survey including observation and in-deep interview to the Gede Catchment's community regarding adaptation strategies for surviving to live harmony with high potential landslide prone area. Field survey for data collection was carried out by grounded research technique.Based on the real condition, the Gede Catchment's community had been survived to live in harmony with high potential landslide prone area. They were very much aware on their living environmental as well as their economic income. Mostly, the community planted several local plantation (agroforestry system) in the inactive landslide (ex-landslide area) and active landslide. It is as the solution between how conserving the landslide prone area with the sustainable economic income. The plantation is the effective protection to soil movement

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Section: Landslide Characterization In the Study Areamentioning

confidence: 99%

Local Agroforestry as Landslide Mitigation in the Gede Catchment in Malang Regency

Muddarisna¹,

Yuniwati²,

Masruroh³

et al. 2019

Proceedings of the Proceedings of the 1st International Conference on Environment and Sustainability Issues, ICESI 2019, 18-19

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“…A large part of these landslides are very likely blocking rivers and forming landslide dams in series along rivers. For instance, a heavy storm in 1889 triggered at least 28 landslide dams in Totsukawa, Japan (Tong, 2008); the 2004 Ms 6.8 Mid Niigata Prefecture Earthquake in Japan formed 45 landslide dams; the Typhoon Morakot in 2009 induced 19 landslide dams in Taiwan (Dong et al, 2011;Wang et al, 2016); and the 2008 Ms 7.9 Wenchuan earthquake triggered as large as 257 landslide dams (Cui et al, 2009). Many of these landslide dams were formed in series along rivers, including the Tangjiashan landslide dam, the largest one caused by the 2008 Wenchuan earthquake, and two relatively small landslide dams downstream along the Tongkou River (Cui et al, 2010;Liu et al, 2010;Shi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Risk-Based Warning Decision Making of Cascade Breaching of the Tangjiashan Landslide Dam and Two Smaller Downstream Landslide Dams

et al. 2021

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Mega earthquakes or serious rainfall storms often cause crowded landslides in mountainous areas. A large part of these landslides are very likely blocking rivers and forming landslide dams in series along rivers. The risks of cascading failure of landslide dams are significantly different from that of a single dam. This paper presented the work on risk-based warning decision making on cascading breaching of the 2008 Tangjiashan landslide dam and two small downstream landslide dams in a series along Tongkou River. The optimal decision was made by achieving minimal expected total loss. Cascade breaching of a series of landslide dams is more likely to produce a multi-peak flood. When the coming of the breaching flood from the upstream dam perfectly overlaps with the dam breaching flood of the downstream dam, a higher overlapped peak flood would occur. When overlapped peak flood occurs, the flood risk would be larger and evacuation warning needs to be issued earlier to avoid serious life loss and flood damages. When multi-peak flood occurs, people may be misled by the warning of the previous peak flood and suddenly attacked by the peak flood thereafter, incurring catastrophic loss. Systematical decision making needs to be conducted to sufficiently concern the risk caused by each peak of the breaching flood. The dam failure probability Pf linearly influences the expected life loss and flood damage but does not influence the evacuation cost. The expected total loss significantly decreases with Pf when the warning time was insufficient. However, it would not change much with Pf when warning time is sufficient.

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“…Higashi-Takezawa landslide (Japan): siltstone, sediments, 93% fine sand (Wang et al, 2016a) V V: landslide volume (dam volume); ү: specific weight; ρ: density; W: water content; e: void ratio; c: cohesion; c': effective cohesion; θ: friction angle; κ: hydraulic conductivity; τ c : critical erosive shear stress; GS: specific gravity; LL: liquid limit; PL: plastic limit; H: dam height (effective dam height); Κ: permeability; d: depth below dam surface; V S : shear wave velocity assessments, and (ii) dam performance and changes in properties over time.…”

Section: Tablementioning

confidence: 99%

“…Wang et al (2013) used MASW surveys and identified low-velocity zones in landslide dam layers. By combining MASW and MTM methods, Wang et al (2016a) showed that the internal structure of a landslide dam was relatively undisturbed, but that weathered materials had low resistance to potential dam overtopping. Hanisch and Söder (2000) hint at a change in dam properties about 140 m below the level of Lake Sarez behind the Usoi rockslide dam in Tajikistan (see also Strom, 2006Strom, , 2014.…”

Section: Discontinuummentioning

confidence: 99%

“…In particular, the failure stages as a function of grain-size changes with depth within the deposit can be better understood by considering depositional facies characteristics and distribution (Dufresne et al, 2016;Dunning and Armitage, 2011;Weidinger et al, 2014). Recent studies bring together the experiences gained from geophysical investigations, identifying the opportunities and limitations of the different methods (Wang et al, 2016a;Wang et al, 2016c;Wang, 2008). Likewise, although small-scale field and laboratory models are mainly designed for artificial dams, a lot can be gleaned from their performance to better understand failure mechanisms of natural blockages.…”

Section: Introductionmentioning

confidence: 99%

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Recent technological and methodological advances for the investigation of landslide dams

Fan

Dufresne

Whiteley

et al. 2021

Earth-Science Reviews

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Layered internal structure and breaching risk assessment of the Higashi-Takezawa landslide dam in Niigata, Japan

Cited by 35 publications

References 43 publications

Local Agroforestry as Landslide Mitigation in the Gede Catchment in Malang Regency

Local Agroforestry as Landslide Mitigation in the Gede Catchment in Malang Regency

Risk-Based Warning Decision Making of Cascade Breaching of the Tangjiashan Landslide Dam and Two Smaller Downstream Landslide Dams

Recent technological and methodological advances for the investigation of landslide dams

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