To investigate the deformation and stability of rock surrounding a tunnel excavated through layered rock, three-dimensional numerical simulation was conducted to compare analyze right line YD2K100+560–630 two-stage docking cross-section Yuelongmen Tunnel using ubiquitous joint model. Based on 3-D simulations, following conclusions were drawn: (1) The excavation construction entrance side signif...

Underground mine tunnels, drifts, and headings are susceptible to the impact of convergence. The convergence has a big influence on further measurements such as airflow volume concentration methane other gases. In most cases, deformation arch supports lead getting smaller cross-section area. A comparison is made between five methods measuring cross-sectional area tunnel. reference size six drif...

The objective of obtaining a spatially standardized steady stream of air across and along the test section of a wind tunnel has been considered by several researchers. When a wind tunnel is manufactured or montage or move to another position, the study about variation of pressure, Mach number, density and temperature distribution, the variation of pitch and yaw components of flow angularity, bo...

background: carpal tunnel syndrome is the most common neuropathy in the general population. nerve conduction studies are among the standard methods for diagnosing carpal tunnel syndrome. electromyography is painful and unpleasant, and if nerve conduction studies can be used to diagnose axonal injury in carpal tunnel syndrome, electromyography might be replaced. objectives: this study aimed to e...

Dear Editor: I recently read your published article entitled ‘’Value of Power Doppler and Gray-Scale US in the Diagnosis of Carpal Tunnel Syndrome: Contribution of Cross-Sectional Area just before the Tunnel Inlet as Compared with the CrossSectional Area at the Tunnel‘’ with interest (1). Dr. Akcar’s article (1) is very informative in that it described the axial images of the median nerve at th...

This document defines the Tunnel Extensible Authentication Protocol (TEAP) version 1. TEAP is a tunnel-based EAP method that enables secure communication between a peer and a server by using the Transport Layer Security (TLS) protocol to establish a mutually authenticated tunnel. Within the tunnel, TLV objects are used to convey authentication-related data between the EAP peer and the EAP serve...

With the large-scale construction and rapid development of underground engineering, a large number of underground engineering construction, such as tunnel and subway emerged. The geological structure of the tunnel is complex and the roc is fragmented. The electromagnetic tomography is a new geophysical technique in the tunnel. This method has advantages such as high resolution, high reliability...

This paper describes the design, construction and early performance of a retaining structure close to a subway tunnel in Barcelona. The excavation, about 16 m deep, was carried out in 2001 during the construction of a new hospital, and involved a rectangular area with the longer side (170 m) almost parallel to the tunnel. The design had to fulfil two requirements: first, the influence of the ex...

To solve the technical problems of slow construction progress, low mechanization and high risk shallow buried large cross-section tunnels in a complex urban environment, series spatial reticulated shell (SRS) support structures are developed this paper. Moreover, equipment multifunctional operation trolley is to install SRS arch, technology system prefabricated structure proposed for tunnel. Th...