Field Experiment Report for Verification of Abandoned Lignite Mines by Robotic Exploration System

2018 ◽  
Vol 30 (6) ◽  
pp. 1004-1013 ◽  
Author(s):  
Hiroyasu Miura ◽  
Ayaka Watanabe ◽  
Masayuki Okugawa ◽  
Susumu Kurahashi ◽  
Masamitsu Kurisu ◽  
...  

The risk of collapse and subsidence of abandoned lignite mines has been noted in the Tokai region of Japan. The cavity-filling process by local governments has been ongoing. There is no cavity map in the abandoned lignite mines, and it is necessary to understand and explore the underground space in order to estimate the amount of filling material needed. By request from Mitake-cho in Gifu Prefecture, we received the opportunity to explore the inside of an abandoned lignite mine using our robotic system. Prior to the exploration of the actual abandoned lignite mine, as a feasibility study, an experimental test field that simulated the elements of the abandoned lignite mine was prepared outdoors. Some experiments were performed and the robotic exploration system was evaluated in this study. This paper describes the lessons learned from the feasibility study.

Author(s):  
Ö. Aydan ◽  
T. Ito

Abstract. It is well known that some sinkholes or subsidence take place from time to time in the areas where abandoned room and pillar type mines exist. The author has been involved with the stability of abandoned mines beneath urbanized residential areas in Tokai region and there is a great concern about the stability of these abandoned mines during large earthquakes as well as in the long term. The 2003 Miyagi Hokubu and 2011 Great East Japan earthquakes caused great damage to abandoned mines and resulted in many collapses. The author presents the effect of the depth and groundwater on the formation of sinkholes or ground subsidence associated with abandoned room and pillar lignite mines under static and dynamic conditions and discusses the implications on the areas above abandoned lignite mines in this paper.


Author(s):  
Christos Bouras ◽  
Apostolos Gkamas ◽  
Thrasyvoulos Tsiatsos

Broadband deployment is a necessity nowadays. It could help each country, municipality and region to grow and offer better quality of life to the citizens. Today, the emphasis on the development of broadband networks is on fixed Fibre To The Home solutions The lessons learned from countries that are leaders in broadband penetration and Fibre To The Home deployment could be proven very useful for under-served communities, regions and countries where the broadband penetration is low. Therefore, this chapter summarises the lessons learned from implementing (a) country-wide strategies formulated at the national level, and (b) local strategies formulated by the municipalities. Concerning the role of national and local governments, it should be noted that nowadays it is very urgent the involvement of government in the development of broadband infrastructure. Proposed noteworthy remarkable cases are Japan, South Korea and Singapore.


2021 ◽  
Vol 10 (1) ◽  
pp. 40-50
Author(s):  
Anamaria Vrabie ◽  
Monica Dudian

The COVID-19 pandemic has added an unforeseen layer of adversity to city life, refocusing the attention of local governments on urban resilience. This article discusses the innovative design proposed by a Romanian public sector innovation lab: a multi-fold qualitative approach that collects coping strategies from a wide range of local stakeholders and works towards understanding how they can be transformed in sustainable practices for crisis moments. It also provides interim lessons learned from designing the intervention.


Work ◽  
2020 ◽  
Vol 65 (1) ◽  
pp. 161-166
Author(s):  
Gerald J. Jerome ◽  
Peter J. Lisman ◽  
Arlene T. Dalcin ◽  
Austin Clark

2019 ◽  
Vol 3 (1) ◽  
pp. 11-46 ◽  
Author(s):  
Beatriz Garcia ◽  
Mandy Meng Fang ◽  
Jolene Lin

Abstract Marine plastics pollution (MPP) is an alarming problem affecting many countries, particularly in the Asia-Pacific region, and generated mostly from land-based sources. Five Asian countries (i.e. China, Indonesia, the Philippines, Vietnam and Sri Lanka) have been identified as the largest sources of MPP globally. This article presents two cases studies focused on the two largest polluters: China and Indonesia. Both countries face similar challenges in dealing with plastic pollution. They have weak legal and institutional frameworks in place to deal with MPP. The two case studies also show that there have been more creative and effective measures taken at the domestic level by local governments and non-state actors, many of which involve partnerships among different stakeholders. This article argues that governance efforts to address MPP require an ‘all hands-on deck’ approach, involving multi-level and multi-actor strategies and targeted regulatory and non-regulatory measures. However, our findings also suggest that most efforts should be directed at the subnational level, from which the problem mainly originates. This article proposes a number of legal and policy recommendations, based on the lessons learned from the case studies, which can be instrumental in reducing the global MPP crisis.


2006 ◽  
Vol 1 (1) ◽  
pp. 46-71 ◽  
Author(s):  
Itsuki Nakabayashi ◽  

This treatise outlines developments in disaster management focusing on earthquake disaster measures taken by the Japanese and Tokyo Metropolitan Governments since the 1980s. The 1978 Large-Scale Earthquake Measures Special Act on conditions for predicting the Tokai Earthquake significantly changed the direction of earthquake disaster measures in Japan. The Tokyo Metropolitan Government undertook its own earthquake disaster measures based on lessons learned from the 1964 Niigata Earthquake. In the 1980s, it began planning urban development disaster management programs for upgrading areas with high wooden houses concentration - still a big problem in many urban areas of Japan - which are most vulnerable to earthquake disasters. The 1995 Great Hanshin-Awaji Earthquake in Kobe brought meaningful insight into both to earthquake disaster measures by the Japanese Government and by the Tokyo Metropolitan Government and other local governments nationwide. Long-term predictions concerning possible earthquake occurrence have been conducted throughout Japan and new earthquake disaster measures have been adopted based on this long-term prediction. The Tokyo Government has further completely revised its own earthquake disaster measures. As a review of measures against foreseeable earthquake disasters based on developments in disaster management measures, this treatise provides invaluable insights emphasizing urban earthquake disaster prevention developed in Japan over the last 30 years that readers are sure to find both interesting and informative in their own work.


2009 ◽  
Vol 71-73 ◽  
pp. 101-104 ◽  
Author(s):  
M. Patel ◽  
D.R. Tipre ◽  
Shailesh R. Dave

Microbial diversity studies of lignite mines of Rajpardi, Amod, Tadkeshwar and Panandhro, Gujarat, India, were carried out by substrate utilization-based, community-structure analysis. In Biologâ EcoPlates out of 31 different substrates, 1 to 28 substrates were metabolized. On the basis of these, similarity index and diversity indices were studied. From an extreme mine site Gram-positive, Gram-negative, fungi and yeasts were isolated and identified. One of the yeasts isolated is for the first time reported from a lignite mine ecosystem Apart from this auto- and heterotrophic iron oxidizers; sulphur oxidizers and sulphate reducers were also isolated. So, lignite mine ecosystems, inspite of the extreme environment showed rich microbial diversity.


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