Cretaceous Strata To The Freezing Of The Pressure Measured With A Double Sidewall Structure Optimization Design

Cretaceous and Jurassic strata of the Inner Mongolia region, freezing sinking as the research background. Theoretical analysis, field measurement and numerical simulation methods. Force characteristics of double reinforced concrete shaft lining structure in the Cretaceous. The Jurassic strata were studied, sidewall structure optimization program as the basis for fruitful economic and social benefits.Experimental study of Cretaceous, Jurassic strata freeze rock physical and mechanical properties. By contrast, in the eastern region and western regions of differences in physical and mechanical properties of frozen soil (stone). By theoretical analysis, the double-layer reinforced concrete shaft lining stress mechanism and the external load values and calculation methods, and discusses the design of the double-layer sidewall structure calculation methods. Field measurement, the Cretaceous strata freezing section to freeze stress and steel stress (vertical and ring), the law of development, the formula of the Cretaceous strata freezing pressure and the measured data combined with theoretical analysis. On this basis, combined with theoretical analysis, the miners parked Jiang Haizi Vice wind three wellbore double reinforced concrete sidewall structure of the optimization program, and by calculation, to prove the feasibility of the optimization program at the same time demonstrate optimization of direct and indirect economic benefits are significant. Finally, numerical simulation, the force characteristics of the Cretaceous formation of double sidewall structure research, has been a large number of numerical simulation results and the results of Figure, right after the sidewall structural design is of great significance.The the Jianghai Zi mine in Inner Mongolia, moored a comprehensive and in-depth Cretaceous strata freezing sinking key technical problems in topic and be successful, to fill the gap of Cretaceous strata to freeze the basic theory to solve the sidewall of the Cretaceous strata design, sidewall security, a series of important theories and key technologies, to improve and enrich the theory and practice of China's freezing sinking results, greatly improved the level of freezing method of well construction in China, has created enormous economic and social benefits.