Study on Overburden’s Destructive Rules Based on Similar Material Simulation
نویسنده
چکیده
Analysis on the current research status, this article studies on the dynamic subsidence principles of overburden rock strata during coal mining based on similar material simulation test. Close ranged industrial photogram metric system was introduced to collect data. After coordinate transformation, matching and model amendment, dynamic subsidence curves which can be used to analyze the continuity characteristics of overburden subsidence, changes of boundary angle and displacement angle, volume transferring law from rock to surface, etc. were got. The result is useful in further study of the dynamic rule of overburden strata and enriches mining subsidence principles.
منابع مشابه
A New Methodology for Frequency Estimation of Second or Higher Level Domino Accidents in Chemical and Petrochemical Plants Using Monte Carlo Simulation
Some of the most destructive accidents of 1980s and 90s which occurred in process industries were domino accidents. Although domino accidents are among the most destructive industrial accidents, there are not much pioneering works done on quantification of them. The analytical formulation of the domino accidents is usually complex and need a deep knowledge of probability rules. Even if the ...
متن کاملMeasurement and Modelling of the Rubber Resilience based on Ultrasonic Non-destructive Testing in Tires
In tire industry, it is very crucial to evaluate physical and mechanical properties of the rubber which is used for production of the tire, to ensure the quality of the final product. Resilience is an important property of a rubber, which cannot be evaluated through direct measurement in production cycle in this industry. Therefore, non-destructive ultrasonic testing, which has been used in man...
متن کاملDescriptive Study on "Market Share Liability" in Iranian Rules of Jurisprudence
The release of some estrogenic drugs in the sixties which produced with several therapeutic goals mostly prevention of abortion followed in similar cancer for the children born from the users. However, such cancers identified as the subsequent use of the drugs, due to a multiplicity of pharmacists and the inability of patients to identify the leading manufacturers, the law cases failed to prove...
متن کاملUltrasonic Signal De-noising Using Dual Filtering Algorithm
This paper describes the proposal of dual filtering algorithm used for ultrasonic A-scan signal de-noising. In ultrasonic non-destructive testing the signals characterizing the material structure are evaluated. The sensitivity and resolution of typical ultrasonic systems is commonly limited by backscattering and electronic noise level commonly contained in acquired ultrasonic signals. In ultras...
متن کاملFriction Stir Welding؛ Material Flow؛ Heat Generation؛ Thermal Simulation؛ Poly methyl methacrylate (PMMA)
In this study, the effects of linear and rotational speed of the friction stir welding tool was investigated on the heat generation and distribution at surface and inside of workpiece, material flow and geometry of the welding area of poly methyl methacrylate (PMMA) workpiece. The commercial CFD Fluent 6.4 software was used to simulation of the process with computational fluid dynamic technique...
متن کامل