The Application's Research On Grind-pressure Tailings Dam Stability Analysis And Warning And Forecasting's Theory In The Mine

This article from the tailings in China and abroad for the safety of the status quo, combining engineering, has focused on research of the stability of mine tailings dam grind-pressure analysis method, apparatus, detection, warning and forecasting software development issues. The following key elements:This article strict distincts concept of the tailings,tailings pond,tailings facilities,tailings dam and the grind-pressure dam ; Analysis the existing problems of design, construction, operation and closure process in the grind-pressure tailings dam; Analysises the main safety factor affecting factors of the reservoir area ; raises the concept of a minimum safety factor , and determines their values in detail in the feasibility studies, will Grades the minimum safety factor for applying the different dam-body and the different security situation evaluation criteria; Analysis the difference of between the safety factor and stability factor; cited the three criteria of the safety factor of and the law of safety factor changes with time; studied a weakening Methods of the rock mechanics parameters and of the geotechnical engineering parameters of the reservoir pore water pressure treatment And of the how to correctly selected the grind-pressure tailings dam safety factor.From Sweden-Separate-band- method, their formula was improved; in the improving Sweden-Separate-band- method's parameters of the formula, earthquake coefficient factor is evaluatedand and calculated, and shows that the different types factors ofthe three venues; the article Impacts coefficient of rockfill dam in the rock shear strength indicators of a new authorized; for complex soil or rock, complex forces and boundary conditions, a new method of determining the sliding surface -the double tangent determination curve method, and improves that uses this method and determines parameters researches and analysises the security and stability of the the Pingguo bauxite mine's two grind-pressure tailings dams, shows the conclusions that the dam is basic stability. The article studies Grind-pressure tailings dam on a microscopic, gets the model of the situation of the grind-pressure rockfill block, analysises its theoretical and practical model in the microscopic, accumulates its size that several pairs of normal-distribution, research its shear strength index of factors and determined way.By the concept of injury in the mechanical damage, put forward after the concept the negative- injury of the grind-pressure dam , improves the classification of the injury, damage has been derived negative effective strain tensor formula; specific analysis of the negative injury in the course of several grind-pressure Phase, that of the entire stress - strain curves; loose from the perspective of the compaction of rockfill: rockfill compaction more closely, smaller than the gap, the higher the intensity after the compaction, Stability better.The article Summes up the three detection equipment's principle and using methods of the grind-pressure dam: the ground penetrating radar, the high-density electrical and the transient Rayleigh wave, analysises three types of instruments' respective advantages and disadvantages and using situation in the tailings dam current safety testing; and the three equipment are successful used in the stability of study of a grind-pressure of a tailings dam in Fenyi County, Jiangxi Province .Form studying and concluding the importance of detecting of the grind-pressure tailings dam , the article studies deformation mechanism of the grind-pressure dam, summes up a set of the safety testing methods of the grind-pressure tailings dam , against the detection method's inadequate in a mine makes a specific recommendations improvement; has developed a set of the early warning software for grind-pressure tailings dam, security researches and analysises forecasting the safety threshold, and the software will be successfully applied to engineering practice.The article significance is: comprehensive, systematic raises from the security problems and decision-making about the grind-pressure tailings dam's design, construction, operation and evaluation of the safety , impactes the grind-pressure tailings dam safety and stability reasons, discusses the grind-pressure rockfill's micro-mechanism , improves the numerical analysis of the relevant parameters and new technology , and researches and Promotes three new detection method and apparatus principle of the tailings dam, developes the application's software to forecasting and early warning of the current grind-pressure tailings Dam of China, and integrates the engineering, the grind-pressure tailings dam's safety and stability of evaluation and decision-making is standardized, systematic, and promoted and applied.