The Error Analysis Of Hydraulic Fracturing Stress Measurement

With the technology and science making the progress,the continuous developmentoftechnology, more and more people are aware of the benefits of in situstress measurementinengineering. Stressmeasurement plays an important role on the engineering safety andsaving resources, it also has now become a major research to pic in mines in china.The main content of this paperis to study the hydraulic fracturing method for someproblems in engineering application, including the traditionalhy draulic pressure crackmeasured on the test section contains a primary crack method,though the analysis todetermine whether there is acrack in the test section of the measured data to estimate thereliability ofthe test results.Then,making use of analysis of the principle of hydraulicfracturing crack method,find out the causes of errors,and using the method of inversionprocedure and using genetic algorithm to find the optimal solution. Showing theexplanation of the common problems about how to confirm fracturing parameters.exposingthat how to choose the date by some examples.For the measurement of the verticalstressof the estimation of reliability problems bymeans of statistics and summarizes the general rules to determine,according to the weightof the overlying rockto estimatefor ageneral discriminant method.The3D hydraulicfracturing method,explained the measurement principle of hydraulic fracturecriterion andfracture pattern recognition problems and gives the solutions.The interpretation method ofhydraulic fracturing method,this paper introduces the principle of each method,andaccording to its principle,the reliability analysis ofthe measurement data of the scope of ageneral judgment.On how to deal with the problems about the system flexibility,thiscontradiction,we first propose to the third chapteris a detailed explanation.Discussed theinfluence to the circumstances in the flexibility of the system is relatively large.And for itsimpact on the correction.