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| 1 | Squeezing rock conditions at phyllite-slate zone in Golab water conveyance tunnel,Iran:A case study显示文摘Squeezing ground in tunneling is associated with large deformation of the tunnel face. In this study, squeezing characteristics of the ground and rock conditions in Golab water conveyance tunnel, Iran, are discussed and the classification of squeezing behavior around zones where the problems occurred is presented. The squeezing conditions were investigated using empirical and semi empirical methods. In the next step, creep convergence of the tunnel with Burger's model was simulated by the numerical method. Numerical analysis showed that wall displacement(64.1 mm) of the Golab tunnel was more than allowable strain(1% of the tunnel diameter), therefore, it was found that squeezing phenomenon could exist, leading to the failure of the support system. Numerical analysis at the phyllite-slate zone also showed squeezing conditions due to the weakness of rock mass and high overburden that this situation cause failure in the segmental lining. In this research, failure in segmental lining in phyllite-slate zone verified the results of the numerical modeling. | Rahmati Asghar Faramarzi Lohrasb Darbor Mohammad | 2017 | Journal of Central South University2017，24，10： | 3 |
| 2 | Up-regulation of Endothelin-1 and Endothelin type A receptor genes expression in the heart of broiler chickens versus layer chickens显示文摘 | Hossein Hassanpour Masood Teshfam Hassan Momtaz Gholamreza Nikbakht Brujeni Lohrasb Shahgholian | 2010 | Research in Veterinary Science2010，，3： | 1 |
| 3 | Development of a new equation for joint roughness coefficient ( JRC ) with fractal di- mension:a case study of Bakhtiary Damsite in Iran 显示文摘 | MANOUCHEHR S LOHRASB F SAREH G | 2015 | Arabian Journal of Geosciences2015，8，1： | 1 |
| 4 | Physical modeling of an underground roadway excavation in vertically stratified rock using infrared thermography显示文摘 | Manchao He Xuena Jia Weili Gong Lohrasb Faramarzi | 2010 | International Journal of Rock Mechanics and Mining Sciences2010，，7： | 1 |
| 5 | Development of a new method for RMR and Q classification method to optimize support system in tunneling显示文摘岩石团分类系统对各种各样的工程设计和稳定性分析很合适。JH 分类方法被这个方法能弄明白的日本高速公路公共公司证实岩石质量的力量或 deformability,进一步的拨出岩石螺栓, shotcrete 的厚度,和就在爆炸过程以后的钢肋骨的沥青的尺寸的数量。把 JH 方法的优点基于这些,在这研究,根据在伊朗的五条深、长的隧道的数据,为从 Q 和 RMR 分类系统估计 JH 方法的值的二个方程被开发。一个新方法能为 Q 和 RMR 分类系统优化支持系统的这些方程。从在这些案例研究的 JH 分类和它的应用程序,为在秘密地工作的支持系统的设计的 JH 方法比 Q 和 RMR 分类系统更可靠,这被指出。 | Asghar RAHMATI Lohrasb FARAMARZI Manouchehr SANEI | 2014 | Frontiers of Structural and Civil Engineering2014，8，4： | 0 |
| 6 | Erratum to: Squeezing rock conditions at phyllite-slate zone in Golab water conveyance tunnel, Iran: A case study显示文摘Authors’ first and last names were interchanged in the original version of the article and they should be replaced as follows: Asghar Rahmati, Lohrasb Faramarzi, Mohammad Darbor. | Rahmati Asghar Faramarzi Lohrasb Darbor Mohammad | 2017 | Journal of Central South University2017，24，11： | 0 |
| 7 | Pore volumes to breakthrough estimation in carbonate acidizing with hydrochloric acid by using an analytical derivation method显示文摘Acidizing treatment is considered as a significant process in the oil well stimulations to form wormholes in carbonate formation in order to enhance the reservoir fluid production.Obtaining the number of pore volumes to breakthrough is an important objective in matrix acidizing,for it contributes to determining the wormhole characteristics such as type,shape,and size.Finding this number in experimental works requires a considerable amount of time,energy and cost.Therefore,this study aimed to establish an analytical method in which a reasonable result is achieved for the number of pore volumes to breakthrough.This purpose is accomplished by solely implementing acid and formation properties without performing any experimental works.The process of wormhole creation is done through developing a numerical model by utilizing the conservation of mass law method in which the carbonate core is considered as a closed system and the overall mass in the system as constant during the acid injection process.Furthermore,a constant number is added to the mathematical part of the model in order to eliminate the dimensionless Damk鰄ler number which is supposed to be calculated experimentally.The results of the numerical procedure of the model are further compared to four other experimental works,which led to calculating the average accuracy of this model that is shown to be 95.98%.This study puts forward a comprehensive numerical model to estimate the number of pore volumes to breakthrough with an acceptable accuracy rate merely through implementing known acid and core properties. | Sina Lohrasb Radzuan Junin | 2020 | Petroleum2020，6，4： | 0 |
| 8 | Estimation of pore volumes to breakthrough number in limestone cores by derivation of an empirical model显示文摘Acidizing in carbonate formations is an inevitable stimulation treatment method for oil and gas wells.In the limestone,acidizing stimulation makes capillary wormholes to increase fluids flow reservoir production.The pore volume to breakthrough number is one of the main indexes for recognizing the wormhole structure.Therefore,finding the pore volume to breakthrough number is one of the main goals in the limestone acidizing.Obtaining this number is always required for experimental works,which needs time,energy and cost.The purpose of this research is to develop an empirical method to estimate an acceptable result for this number merely by implementing limestone core and acid properties without any experimental work.In order to create a wormhole,an empirical method is developed using the law of conservation of mass considering that the core of limestone as an isolated package and the overall mass is constant in this package in the acidizing period.Also,to develop the mathematical section,the Damk€ohler number is used.Since this number must be calculated experimentally,a constant number is created in the model to eliminate the Damkohler number.An average accuracy of 92.31%is obtained for the developed empirical model by comparing the results obtained from the other three experimental and numerical works.This study conclusively provides a thoroughly empirical method for estimating a high accuracy of the pore volume to breakthrough number by only using known physical properties limestone core and acid. | Sina Lohrasb Radzuan Junin | 2021 | Petroleum Research2021，6，3： | 0 |
| 9 | Empirical Development of the Rock Mass Deformation Modulus显示文摘 | ManouchehrSanei Lohrasb Faramarzi | 2014 | Journal of Geological Resource and Engineering2014，2，1： | 0 |
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