Sharif Digital Repository

Dynamic design of underground structures is complicated and difficult. Although underground structures are less vulnerable than surface structures, dynamic analysis of these structures during their design process is necessary. In this project, numerical studying of fault effect on underground structures and its dynamic responses, focusing on tunnel Shebli was conducted. Two-dimensional model utilizing UDEC software which is based on descrete elements method was used for this analysis. Time history of Manjil Earthquake using horizontal component of ground acceleration which is propagated toward earth surface was applied to models as a shear wave with respect to depth and type of rock. To... 

Iran as the second country with huge reserves of natural gas (with more than 30 trillion cubic meters of extractable gas) and according to the horizon of 1403, in the field of natural gas important goals such as reaching the second largest gas producer in the world, increasing the share of energy basket Gas in the country is pursuing an increase in gas exports and an increase in gas injections into the country's oil reservoirs. At present, natural gas supply and demand management is seen in the world as a tool in the commercial market and enterprises. In this way, gas producers sell gas at a higher price as demand increases and store it as demand decreases. The science of geomechanics in...