.... In the numerical analysis, material and contact properties were adopt from previous laboratory studies. Because the contact properties between membrane and other supporting materials at the interface is important parameter to understand the supporting mechanism of the sprayed waterproofing membrane, contact...

... adopted mainly owing to the lack of experiments. In this study, numerical analysis was conducted to grasp a rough outline of the influence of round length on the displacement and stress of support during excavation. Based on the results, field tests were conducted to examine the actual behavior...

... hammer arrangement. Deformations are measured by means of linear variable differential transducer (LVDT) in the tunnel lining. Experimental data is validated by numerical analysis using commercially available FEA software Abaqus. 1. Introduction Rock and rock mass at higher depth are stress...

...Mechanism of Landslide Behavior at an Unstable Steep Slope Based on Field Measurements and a Numerical Analysis: A Case Study Nguyen Trung Kiena, b*, Shinichiro Nakashimaa and Norikazu Shimizua a Yamaguchi University, Yamaguchi, 755-8611, Japan b Thuyloi University, Hanoi, Vietnam *Email: kiennt...

... carried out numerical analysis of an acoustic field simulating both single and multiple-steps blasting. The result shows that the seismic interferometry for SWE-SSRT could have applicability to the survey ahead of a tunnel face. seismic source gate length october 2014 construction Reservoir...

... mass is greater than approximately 10% for a tunnel diameter, the inhomogeneity in the rock mass must be considered in the numerical analysis. inhomogeneity material property MPa Upstream Oil & Gas back analysis triangle distribution equivalent material property square distribution...

... static loading test Risk Mitigation Measure kusaka loading test Rock Tunnel displacement numerical analysis lining tunnel 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan ? Static Loading Tests and Numerical Analysis of the Effects of Risk Mitigation Measures...

... are increasing. The authors have been involved with the evaluation of the stabilities un-supported underground spaces for public utilization. The authors first compared the stability condition obtained from numerical analysis with field observations and measurements and concluded they should be stable in short...

... from data acquired during construction and service stages. The deformation mechanism and the effect of countermeasure are discussed through the result from in-situ measurement and numerical analysis in this paper. First, the tunnel lining was observed through up-close visual inspection for five years...

...8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sappor, Japan A Numerical Analysis of the Effects of Ground Properties on Immediate Ring Closure in Mountain Tunneling K. Kawata D. Awaji?, N. Isago?, A. Kusaka?, and H. Mashimo? ? ? * kawata55@pwri.go.jp Abstract Immediate ring closure...

... numerical analysis metals & mining Engineering empirical relationship uniaxial compressive strength Reservoir Characterization Upstream Oil & Gas Rock mechanics prediction tunnel circular tunnel reservoir simulation explicit solution failure criterion maximum normalized depth maximum...

... Displacement Contour coal seam Reservoir Characterization coal seam gas numerical analysis mechanical property coal bed methane displacement contour extra-thick coal seam metals & mining slope stability Pit Slope complex reservoir extraction investigation Thailand underground mining...

... numerical analysis safety factor RMR grade Munro equation ABSTRACT Pillar design is essential in mining practice, to achieve safe economic potential of an orebody. As a preliminary research on the optimized design of pillar structures, numerical analysis has been carried out to estimate pillar...

... by flushing air during drilling) with input parameters obtained from the in situ drilling tests. Three design factors were determined, with a Taguchi experimental design method utilized to evaluate optimum values for each factor. bit selection CFD Simulation numerical analysis discharge capacity...

... siah bisheh cavern Reservoir Characterization Engineering numerical analysis Mining Engineering rock mass powerhouse cavern Amirkabir University creep Upstream Oil & Gas cavern discontinuity time dependent behavior reservoir geomechanics support system time-dependent behavior...

... to the tunnel convergence data which have recorded during tunnel excavation. The results of numerical analysis were matched to monitoring of tunnel convergence, approximately. According to geological condition of the area and results of analysis, it can be concluded that the effect of excavation in one tunnel...

... intensity of the area after disposal of all over-packs has been found 1.25MW per square kilometer. The three dimensional numerical analysis further revealed that maximum skin temperature of the over-pack reached 104 o C in 35.64 years and temperature of rock mass at 350m above the over-pack reached 40.5 o C...

... Upstream Oil & Gas flow analysis hydraulic fracturing aperture minor axis discontinuity complex reservoir cavern boundary condition axis hydraulic aperture fracture EDZ excavation inflow Completion Installation and Operations DFN model numerical analysis hydraulic aperture...

... software according to the latest Hock and Brown's failure criteria. The results of the analysis were compared with the monitoring data and the models were calibrated. Finally, appropriate supporting systems were determined with use of practical methods parallel to numerical analysis. 2. Statement...

... the effect on the factors systematically through the scaled model test, which has been well known as a engineering solution, and also numerical analysis using the finite differential method (Code FLAC2D) was carried out to compare with the results of scaled model experiments. It was found that rock mass...