Method for analyzing rock brittleness based on energy evolution and fuzzy hierarchy
The invention relates to a method for analyzing rock brittleness based on energy evolution and fuzzy hierarchy, which is characterized in that a total stress-strain curve is divided into an energy accumulation stage, an energy dissipation stage and an energy release stage based on the relationship b...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a method for analyzing rock brittleness based on energy evolution and fuzzy hierarchy, which is characterized in that a total stress-strain curve is divided into an energy accumulation stage, an energy dissipation stage and an energy release stage based on the relationship between rock brittleness and energy evolution characteristics, and a corresponding stage Bi (i = 1, 2, 3) is calculated according to energy evolution. Then considering the interaction between energy through a fuzzy analytic hierarchy process (FAHP) to determine the weight coefficient of the influence degree of each stage of Bi on the rock brittleness, and calculating to obtain Bnew; the method is simple and reliable in principle and simple to operate, can quantitatively characterize the brittleness characteristics of the whole rock fracture process, and provides a powerful basis for optimization design of hydraulic fracturing parameters.
本发明涉及一种基于能量演化及模糊层次分析岩石脆性的方法，基于岩石脆性与能量演化特征的关系,将全应力-应变曲线分为能量累积，能量耗散，能量释放三个阶段,根据能量 |
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