Search

Objectives: Geological hazard points and hidden danger points are the data basis for geological hazard evaluation, while the existing records of geological hazard points have poor timeliness and are incomplete. To solve this problem, the deformation information obtained by multi-temporal interferometric synthetic aperture radar (InSAR) was integrated into the geological hazard evaluation model. And we explore how to make better use of the deformation information. Methods: The greater the deformation level, the greater the possibility of geological hazards. This paper not only takes the deformation points obtained by multi-temporal InSAR as the geological hazard points/hidden danger points, but also integrates the deformation level information obtained by multi-temporal InSAR as an evaluation factor into the susceptibility evaluation model, making full use of the effective deformation information obtained by multi-temporal InSAR. And the evaluation model adopts the coupling model based on information value model and the analytic hierarchy process model to obtain the susceptibility evaluation and zoning of the geological hazards in Baiyin City, Gansu Province,China. Results: Through the verification of the existing geological disaster point data, it is found that the partitions in this paper are in good agreement with the existing geological hazard points distribution.In the designated extremely high-prone areas, there are nearly 8 geological disaster points within 10 km2 , while less than one in the extremely low-prone areas. Conclusion: The multi-temporal InSAR deformation information added to the geological hazard evaluation model greatly improves the timeliness and quantity of records of geological hazard points/hidden points. However, only one kind of synthetic aperture radar data cannot completely identify all geological hazard points/hidden danger points, due to the limitations of incidence angle and microwave wavelength. In the futher work, we will focus on the combination of multiple deformation monitoring technologies to jointly monitor surface deformation, such as multi-sensor and multi-track InSAR technology, airborne light laser detection and ranging and high-resolution optical remote sensing. [ABSTRACT FROM AUTHOR]

The topographical and geological conditions in China are complicated, with frequent geological disasters, which have been aggravated by various human engineering geological activities. The prevention and management of geological disasters are the premise and foundation of ensuring the safety of people's lives and property. Geological disaster susceptibility evaluation is the premise of hazard evaluation and risk assessment, and the basis of geohazard zoning and prevention as well. Based on related researches on geological disaster susceptibility at home and abroad, the paper discusses the concept of geohazard susceptibility, evaluation index system, weight calculation method and evaluation model, and points out the main problems to be solved in geohazard susceptibility evaluation. [ABSTRACT FROM AUTHOR]

The extensive development of lead - zinc resources over the years has led to the gradual manifestation of geological and environmental issues in Xunyang Lead Zinc Belt, including geological environmental pollution caused by mining activities, damage to land resources in mining areas, and hidden geological hazards in mines. This paper provides a detailed analysis and summary of the current status of environmental issues in Xunyang Lead - Zinc Belt and proposes corresponding strategies for geological environmental remediation [ABSTRACT FROM AUTHOR]