Abstract The utilization of tail void grout as a stabilizing and sealing agent in mechanized tunneling procedures is paramount significance, given the geological engineering conditions inherent to projects. Prior its application within tunnel, detailed evaluation fresh-state characteristics grout, well time-dependent evolution hydro-mechanical properties, becomes imperative. This review paper a...

In this study, the effects of some geotechnical parameters on surface settlement curves due to mechanized tunneling and corresponding risk buildings are investigated through numerical analysis. The advanced constitutive law Plastic Hardening is utilized accurately reflect Soil behavior in unloading. Using obtained from analysis, category calculated effectiveness each parameter level investigate...

During underground construction, the behavior of ground is influenced by characteristics rock mass with situ stresses and water, cross section excavation area, method, rate excavation. These fundamental features are considered to ensure support stability excavations achieve long-term successful operation. However, composition Himalayas hinders tunnel excavation, especially in case mechanized tu...

Mechanized reasoning uses computers to verify proofs and to help discover new theorems. Computer scientists have applied mechanized reasoning to economic problems but – to date – this work has not yet been properly presented in economics journals. We introduce mechanized reasoning to economists in three ways. First, we introduce mechanized reasoning in general, describing both the techniques an...

In mechanized tunneling, so-called tunnel boring machines (TBMs) drill through the ground in an automatized manner. Therefore, drilling process is very efficient but maintenance costs are high. Seismic exploration seems appropriate to identify changing conditions front of TBM reduce from damages and corresponding dwell times. Today's seismic techniques using only a small amount information, whi...

Quantitative analysis of production through evaluation of inputs consumption quantity is of main principles in agricultural policies, which is followed by increasing in production through optimal use of resources. This study has been conducted to estimate different types of production functions in mechanized farms of broiler chicks located in Gorgan city. Cross-section survey data were gathered...

Coal dust pollution in fully mechanized excavation faces not only affects the safety production of coal mine but also threatens health workers. In order to reduce and improve work conditions mines, layout dedusting-air duct dry collector influence position on dust-producing area were studied. addition, effects different cutting positions removal efficiency A full-scale model roadway is establis...

The development and extension of large cities induced a need for shallow tunnel in soft ground of building areas. Estimation of ground settlement caused by the tunnel excavation is important engineering point. In this paper, prediction of surface subsidence caused by tunneling in one section of seventh line of Tehran subway is considered. On the basis of studied geotechnical conditions of the r...

Technological progress in tunneling has led to modern and efficient tunneling methods in vast underground spaces even under inappropriate geological conditions. Identification and access to appropriate and sufficient geological hazard data are key elements to successful construction of underground structures. Choice of the method, excavation machine, and prediction of suitable solutions to over...