As the ground subsidence phenomenon is become a social issue, the government and local governments making great efforts for ground subsidence prevention and response, and suggests a variety of related materials. In this study, based on related materials to analyze the causes and characteristics of the phenomena occurring ground subsidence in the domestic area. Using the result, ground subsidence phenomenon prevent occurrence. The results, three possible 1) underground pipeline, 2) Excavation, 3) Items classified as geological conditions cases occurred in city area, and it could be divide three categories again.

Since the ground subsidence frequently occurs caused by water and sewage pipeline leakage, this paper reviews current maintenance management regulation, legislation related to water and sewage pipeline measurement for maintenance in practice to prevent and manage this phenomenon. Analysis of current system shows the difficulty of ground subsidence evaluation and importance of the law which is now being established has been emerged. In addition, it is determined that the regulation contains specified content with specific range of water and sewage pipeline is required for its maintenance.

Recently, as ‘ground subsidence in urban area’ problem become social issue, Central & Local Government examined current state of ground subsidence. As a results, It is revealed that 1)sewage pipeline damage, 2)excavation work of surrounding pipeline, and 3)water pipeline damage were main reason of subsidence. This study is going to present weak-point for each type of pipeline in the case of water pipeline monitoring, by analyzing current state materials of water pipeline leakage work of ○○city, to prevent ground subsidence from water pipeline leakage.

The cut slope distributed in domestic, which have single horizontal extension over 200m and 50m of vertical height are classified into 2nd class facility by <Special Act On The Safety Management Of Structures>. Collapse of these cut slope occurs by thaw, rainfall, soil characteristics. Recently, frequency of small size cut slope collapse is increasing. Accordingly, central government partially revised <Special Act On The Safety Management Of Structures> with the contents of expansion of 2nd class facility's scope and standard and it is expected to be an effective maintenance and management measures of cut slope. Therefore, this study analyzed distribution type and characteristics of the national highway cut slope within the scope of relevant laws and regulations based on the status data of 2nd class facility (cut slope) to examine the maintenance status.

In this paper, the strategy of the research project was introduced to develop the safety evaluation factors and the monitering system of underground lifelines against the ground subsidence. This study will be carried out in three steps of concept design, critical technique development and technique verification.