【摘要】 根据山区河谷下采矿岩体移动变形的特点,采用 Fuzzy 测度理论,建立了在山区河谷下磷矿开采岩体移动变形预测分析的数学模型。在大量实测资料统计分析基础上,给出了山区河谷下开采后上部岩体移动变形破坏的极限值:同时,就山区河谷下磷矿开采问题,结合具体地下开采工程,提出了可行的安全技术措施.通过具体工程实例计算分析发现,理论预测结果与现场实测结果相吻合,表明给出的 Fuzzy 数学方法适用于预测分析河谷下采矿岩体移动变形问题。更多还原

【Abstract】 The rock mass deformations and movements due to underground mining have often resulted in major disasters throughout the world,frequently with heavy losses of life and damage to property.These disasters have motivated the development of rock mechanics.The prediction of deformations and movements of rock mass and their surface effects is an important problem of rock mechanics in the excavation activities especially the phosphorus mining in mountain areas.Based on the results of the statistical analysis of a large amount of measured data in geotechnical engineering,the fundamental fuzzy model of deformations and movements of rock mass is established by using the theory of fuzzy measurement.The theories of both two-and three-dimensional problems are developed and applied to the prediction of the rock mass displacements and instability due to mining of phosphorus ore-deposit under river valley in mountain areas.The practical technological scheme applied to the safe production is also proposed.The agreement of the theoretical results with the field measurements shows that the proposed model is satisfactory and the formulae obtained are valid and thus can be effectively used for predicting the displacements and instability due to mining of phosphorus ore-deposit under river valley in mountain areas.更多还原