•3D Underground Cadastral Data Model is proposed.•3D Underground Cadastral Data Model is associated and integrated with ISO 19152 Land Administration Domain Model (LADM).•The Prototype of 3D ...Underground Cadastral Data Model is developed and implemented in real-world situation.
Underground space is being considered as a sustainable development resource, especially in heavily urbanized areas such as Seoul, in Korea. However, regarding 3D underground property, uncertainties and gaps exist between cadastral system and real property registration system. In Korea, cadastral system is able to deal with only 2D surface parcel, on the contrary, real property registration system is able to register and manage legal status of 3D underground properties. The mismatch between these two systems causes various types of problems for underground properties such as a vertical boundary disputes between aboveground and underground ownerships, administrative confusion and dual-compensation problems for new underground construction, reconstruction and haphazard development for underground space due to the lack of systematic registration procedure. In order to overcome these problems, this research proposes a 3D underground cadastral data model, which is associated and integrated with classes in ISO 19152 Land Administration Domain Model (LADM) developed by the Technical Committee 211 of the International Organization for Standardization. The proposed 3D underground cadastral data model comprises two packages: 3D underground parcel package, and 3D underground surveying and mapping package. It would support a better service for land administration by providing reliable and accurate spatial information on 3D underground property. In order to validate the proposed 3D underground cadastral data model, the prototype is developed and implemented in real-world situation for the first time. The proposed 3D underground cadastral data model can register various types of 3D underground properties including architectures such as shopping mall, public walkway, parking lot, and etc., and civil infrastructures such as subway, road, water supply, sewage, common utility tunnel, and etc. The results show that the proposed 3D underground cadastral data model could be applicable for other information system such as land valuation and taxation system, urban planning system, construction and facility management system.
•Overview of the development of Helsinki’s underground Master Plan.•Discussion of legal and planning issues.•Geotechnical database development.•Value of underground master planning.
Helsinki has ...developed a dedicated Underground Master Plan for its whole municipal area, not only for certain parts of the city. This work began in the 1980s and from then the City of Helsinki has maintained an underground space allocation plan. On average, under each 100m2 of surface area in Helsinki there is 1m2 of underground space. Consequently, there are still many underground resources for future needs existing within the whole city area. The Underground Master Plan of Helsinki shows both existing and future underground spaces and tunnels, as well as existing vital access links to the underground. It also includes rock resources reserved for the construction of as yet unnamed underground facilities. The development of the master plan has resulted from a long-term commitment of many public and private stakeholders to the planning process, the creation of a suitable legal framework and the collection and management of the data on geotechnical conditions and underground facilities.
Geospatial data and information within contemporary land administration systems are fundamental to manage the territory adequately. 3D land administration systems, often addressed as 3D cadastre, ...promise several benefits, particularly in managing today’s complex built environment, but these are currently still non-existent in their full capacity. The development of any complex information and administration system, such as a land administration system, is time-consuming and costly, particularly during the phase of evaluation and testing. In this regard, the process of implementing such systems may benefit from using synthetic data. In this study, the method for simulating the 3D cadastral dataset is presented and discussed. The dataset is generated using a procedural modelling method, referenced to real cadastral data for the Slovenian territory and stored in a spatial database management system (DBMS) that supports storage of 3D spatial data. Spatial queries, related to 3D cadastral data management, are used to evaluate the database performance and storage characteristics, and 3D visualisation options. The results of the study show that the method is feasible for the simulation of large-scale 3D cadastral datasets. Using the developed spatial queries and their performance analysis, we demonstrate the importance of the simulated dataset for developing efficient 3D cadastral data management processes.
Underground space planning in Helsinki Vähäaho, Ilkka
Journal of Rock Mechanics and Geotechnical Engineering,
10/2014, Letnik:
6, Številka:
5
Journal Article
Recenzirano
Odprti dostop
This paper gives insight into the use of underground space in Helsinki, Finland. The city has an underground master plan (UMP) for its whole municipal area, not only for certain parts of the city. ...Further, the decision-making history of the UMP is described step-by-step. Some examples of underground space use in other cities are also given. The focus of this paper is on the sustainability issues related to urban underground space use, including its contribution to an environmentally sustainable and aesthetically acceptable landscape, anticipated structural longevity and maintaining the opportunity for urban development by future generations. Underground planning enhances overall safety and economy efficiency. The need for underground space use in city areas has grown rapidly since the 21st century; at the same time, the necessity to control construction work has also increased. The UMP of Helsinki reserves designated space for public and private utilities in various underground areas of bedrock over the long term. The plan also provides the framework for managing and controlling the city's underground construction work and allows suitable locations to be allocated for underground facilities. Tampere, the third most populated city in Finland and the biggest inland city in the Nordic countries, is also a good example of a city that is taking steps to utilise underground resources. Oulu, the capital city of northern Finland, has also started to ‘go underground’. An example of the possibility to combine two cities by an 80-km subsea tunnel is also discussed. A new fixed link would generate huge potential for the capital areas of Finland and Estonia to become a real Helsinki-Tallinn twin city.
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