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Jinning County, Yunnan geological disaster-prone Evaluation Method

Author: YinFei
Tutor: LiuXing；HeHuaiZhong
School: Kunming University of Science and Technology
Course: Geological Engineering
Keywords: Geological disaster-prone nature Evaluation Method Evaluation System Quick superimposed fusion evaluation system Jinning County
CLC: P694
Type: Master's thesis
Year: 2010
Downloads: 126
Quote: 0
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Abstract


Geological disaster-prone assessment, geological hazard assessment as the core elements of geological disasters in recent years become the focus of the investigation. The times to recognize the law of geological disasters Jinning anchored to evaluate geological disaster-prone nature of the baseline study proposed common geological disaster-prone evaluation methods need to further optimize the Department, and MAPGIS software as the basis to construct geological disaster-prone overlay fusion of rapid evaluation method, the final amount of information through the evaluation and geological hazards and geological disasters fuzzy comprehensive evaluation method to compare the results analyzed to obtain a more accurate evaluation of the results, to achieve a rapid assessment of geological disasters and tracking technology. Through this study, achieved the following results and knowledge of: (1) The survey of verification Jinning County potentially hazardous geological disaster point 95. Of these, 60 landslides, avalanches 1, 2 ground subsidence, landslides and unstable slopes ditch 4 28. (2) the system of field investigation and comprehensive analysis, Jinning County geological hazards to landslides, unstable slopes, landslides based, and has flocks, in strips distribution characteristics. (3) local lithology, rock composition and geological structure to determine its geological disasters is a key factor in the degree of development, while the atmospheric precipitation, human activity is a major geological disasters induced factors, each influencing factor in the development of different types of geological disasters role in the process occurs is different. (4) The summarized a set of a more rapid and yet the accuracy of geological disaster-prone evaluation system - geological disaster-prone Overlay blend of rapid evaluation system. The specific evaluation process is as follows: ① Select the main index; ② the use of expert scoring method were given various indicators corresponding weights; ③ evaluation conducted on various geological disaster-prone evaluation, and were used in three different colors (expressed geological disasters susceptible degree) that eventually come to the evaluation of geological disaster-prone zoning map; ④ using MAPGIS spatial analysis capabilities for integration of various zoning map overlay analysis, the total geological disaster-prone zoning map ⑤ analyze the results of the evaluation. (5) The results of this evaluation and informative evaluation system and evaluation results of fuzzy evaluation system relative ratio analysis, the evaluation results are basically the same, indicating that the evaluation system is reasonable, feasibility, practicality, feasibility and application value. (6) The evaluation system constructed effectively avoid the abrupt district, color gradient overlay fusion is reflected out of the geological disaster-prone nature has a certain gradual transition. (7) The evaluation system constructed, effectively simplifying the traditional evaluation methods evaluation process, the evaluation process is simple and intuitive, easy to operate, for the evaluation of geological disasters save a lot of manpower, money and time, are better able to achieve following evaluation of geological disasters, disaster prevention and mitigation work to provide a scientific basis. (8) The results of the evaluation show that Jinning County geological disasters High-prone areas are mainly concentrated in the sunset rural West (Ⅰ 1), Second Street, River Basin and Kunyang Phosphate peripheral (Ⅰ 2), Sixth Street rivers and river between (Ⅰ 3 ) within the area; in prone areas are mainly concentrated in the central area of ??Jinning County (Ⅱ). This is Jinning County geological disasters prevention and planning provides a direct basis.

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CLC: > Astronomy,Earth Sciences > Geology > Disaster geology
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