Classification, grading criteria and quantitative expression of earth fissures: a case study in Daming Area, North China Plain
| Autor: | Lingchao Meng, Feiyong Wang, Jishan Xu, Jianbing Peng, Hongqian He, Yahong Deng |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:GE1-350
010504 meteorology & atmospheric sciences Earth fissure lcsh:Risk in industry. Risk management North china controlling factor 010502 geochemistry & geophysics quantitative method 01 natural sciences lcsh:TD1-1066 Preliminary analysis lcsh:HD61 Joint action Mining engineering North China Plain General Earth and Planetary Sciences Quantitative expression lcsh:Environmental technology. Sanitary engineering Grading (engineering) grading criteria Geology lcsh:Environmental sciences 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Geomatics, Natural Hazards & Risk, Vol 9, Iss 1, Pp 862-880 (2018) |
| ISSN: | 1947-5713 1947-5705 |
| Popis: | Observation, description and preliminary analysis are important means in studies on earth fissures. As a phenomenon of surface fractures, earth fissures are formed under the joint action of exogenetic and endogenetic forces and their development can be characterized by parameters of length, width, depth, fractal dimension and influential width. Based on their length, we deduced a ‘length-grade conversion equation’ and divided earth fissures into 10 grades. In addition, we also deduced a series functions to describe the contribution of fissure-inducing forces including active fault, earthquake, groundwater withdrawal and ancient river channels based on their roles in fissure formation and their affecting conditions. These functions provide the criteria for classification of earth fissures. In order to verify the effectiveness of these methods, we took Daming fracture zone on the North China Plain as an example to quantitatively calculate the control factors of the earth fissures in this area. Moreover, we proposed various plane expression methods for single and grouped earth fissures that could be used to improve the relevant studies on earth fissures. |
| Databáze: | OpenAIRE |
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