Possibility of detecting a high-beta-gamma LLW repository prior to underground space utilization

1999 ◽  
Vol 5 (2) ◽  
pp. 29-35
Author(s):  
Hiroyuki Ikuse ◽  
Shuji Hashimoto ◽  
Masafumi Yamamoto ◽  
Katsuhide Matsumura
Keyword(s):  
Underground Space ◽  
Space Utilization ◽  
High Beta

scholarly journals Spatial-Temporal Evolution of Land Subsidence and Rebound over Xi’an in Western China Revealed by SBAS-InSAR Analysis

2020 ◽  
Vol 12 (22) ◽  
pp. 3756
Author(s):  
Wei Shi ◽  
Guan Chen ◽  
Xingmin Meng ◽  
Wanyu Jiang ◽  
Yan Chong ◽  
...  
Keyword(s):  
Land Subsidence ◽  
Groundwater Level ◽  
Surface Deformation ◽  
Western China ◽  
Ground Subsidence ◽  
Underground Space ◽  
Large Area ◽  
Space Utilization ◽  
Rapid Urbanization ◽  
Ground Fissures

Land subsidence is one of the major urban geological hazards, which seriously restricts the development of many cities in the world. As one of the major cities in China, Xi’an has also been experiencing a large area of land subsidence due to excessive exploitation of groundwater. Since the Heihe Water Transfer Project (HWTP) became fully operational in late 2003, the problem of subsidence has been restrained, but other issues, such as ground rebounds, have appeared, and the effect of the underground space utilization on land subsidence remains unsolved. The spatial-temporal pattern of land subsidence and rebound in Xi’an after HWTP and their possible cause have so far not been well understood. In this study, the evolutionary characteristics of land subsidence and rebound in Xi’an city from 2007–2019 was investigated using Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS-SAR) technology to process the Advanced Land Observing Satellite (ALOS) and Sentinel-1A SAR datasets, and their cause and the correlation with groundwater level changes and the underground space utilization were discussed. We found that the land subsidence rate in the study area slowed from 2007–2019, and the subsidence area shrank and gradually developed into three relatively independent and isolated subsidence areas primarily. Significant local rebound deformation up to 22 mm/y commenced in the groundwater recharge region during 2015–2019. The magnitude of local rebound was dominated by the rise in groundwater level due to HWTP, whereas tectonic faults and ground fissures control the range of subsidence and the uplift area. The influence of building load on surface deformation became increasingly evident and primarily manifested by slowing the subsidence reduction trend. Additionally, land subsidence caused by the disturbances during the subway construction period was stronger than that in the operational stage. Future land subsidence in Xi’an is predicted to be alleviated overall, and the areas of rebound deformation will continue increasing for a limited time. However, uneven settlement range may extend to the Qujiang and Xixian New District due to the rapid urban construction. Our results could provide a scientific basis for land subsidence hazard mitigation, underground space planning, and groundwater management in Xi’an or similar regions where severe ground subsidence was induced by rapid urbanization.

scholarly journals Legal Framework of Urban Underground Space in China

2020 ◽  
Vol 12 (20) ◽  
pp. 8297
Author(s):  
Zhi Zhang ◽  
Jenny Paulsson ◽  
Jian Gong ◽  
Ji’e Huan
Keyword(s):  
Three Dimensional ◽  
Legal Framework ◽  
Legal Issues ◽  
Underground Space ◽  
Master Planning ◽  
Space Utilization ◽  
Large Cities ◽  
Judicial Practice ◽  
Basic Law ◽  
Laws And Regulations

The booming of three-dimensional (3D) land use brings a change of the connotation of land rights, which will expand “flat” 2D land legislation with 3D land legislation. The legal issues of urban underground space for 3D objects in large cities around the world have been attracting more and more attention. A supportive legal framework is crucial for underground space utilization in a country. This paper analyzes the present 173 representative laws and regulations of urban underground space utilization and management of China from 1998 to 2018, and attempts to interpret the current laws and regulations of underground space from four aspects; by quantity, spatial distribution, legislative force and content. The result shows that poor legal framework of urban underground space in China, including low-level of legislative force, disunity of local legislation standard and absence of special statutes and regulations, are the main reasons causing ownership disputation, registration chaos, as well as no unanimous judicial practice. To address these issues, the paper refers to a case study for underground space legal framework in Japan and aims to form a set of top-down unified legal framework, including basic law, special statutes and regulations, as well as supplementary policies and documents of urban underground space, and proposes that the underground space planning should be incorporated as one essential portion of the master planning in China. By studying the legal system of underground space in Japan and China, this study may offer better insight for those conducting UUS legal framework research as well as serve as reference for countries with similar legal issues.

scholarly journals PROBLEMATIC ASPECTS OF THE USE OF URBAN UNDERGROUND SPACE IN INDONESIA

2017 ◽  
Vol 2 (2) ◽  
pp. 65
Author(s):  
Hanny W Wiranegara
Keyword(s):  
Local Governments ◽  
Spatial Planning ◽  
Qualitative Data ◽  
Legal Aspect ◽  
Land Ownership ◽  
Underground Space ◽  
Infrastructure Development ◽  
Space Utilization ◽  
The Government

<p><em>Recently, </em><em>the government is taking advantage of underground space for city’s infrastructure development needs. In fact, it is identified that</em><em> </em><em>the constraints are still remained in fulfilling the government mission. The aim of this paper is to reveal the problematic aspects in terms of the use of underground space by conducting</em><em> qualitative data in term of interviewing experts and official staff of five local governments’ i.e.: Jakarta, Bandung, Surabaya, Makassar, and Medan.  It is concluded that the problematic aspects are: the resources, land ownership, legal aspect; underground spatial planning, as well as technical and technological aspects. </em></p><strong><em>Keywords</em></strong><em>: </em><em>underground space, utilization, problematic aspects</em>

Explore Underground Space Development in Ecotourism Area Based on Environmental Characteristics

2013 ◽  
Vol 689 ◽  
pp. 519-523
Author(s):  
Zi Wei Zhao ◽  
Xiao Bin Yang
Keyword(s):  
Sustainable Development ◽  
Calculation Method ◽  
Underground Space ◽  
Environmental Characteristics ◽  
Space Utilization ◽  
Natural Landscape ◽  
The Sustainable Development ◽  
Ecological Balance ◽  
Advantages And Disadvantages ◽  
Contemporary Situation

As a result of the popularity of ecotourism in China, the number of tourists has increased and the development scale of tourism area has expanded constantly. It will inevitably affect natural landscape and ecological balance. In order to protect the environment and maintain the sustainable development of ecotourism area, this paper argues that underground space utilization in ecotourism area is an effective method. By introducing the contemporary situation of ecological tourist area in China, it points out the necessity of underground space development. Combined with the characteristics of underground space, the advantages and disadvantages of underground space development in ecotourism area were analyzed. The main principles of underground space development in ecotourism area were discussed. From the perspective of overall planning in ecotourism area, the calculation method for underground space demand was proposed.

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