... are developed. At first, the horizontal pilot boring in the tunnel was categorized into three types as boring distance. Then, the special devices to measure ground water pressure for each boring type are respectively developed. Therefore, devices for each boring type have different concept and structure...

... be capable to withstand all loads caused by earth (e.g. rock and water pressures), construction conditions (e.g. thrust forces) and utilization (e.g. traffic loads) without unallowable deformations. A Finite difference code was used to analyze Sabzkouh tunnel lining. The final results show that the values...

...) (m) 3.000 B G1 B Stress monitoring points (1, 2, 3) Pore water pressure monitoring points (a, b, c, d) Displacement monitoring points (G1, G2) Ca se 1 : h w = 12 7. 5 m Ca se 2 : h w = h d = 12 7. 6 m a 1 b 2 c 3 d DG2 Rhyolite Colluvium Fixed in the horizontal direction Fixed in both vertical...

... hydro-fracturing test water pressure hydro-fracturing stress measurement unit hydro-fracturing unit pipe pilot borehole packer Rock stress double packer 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Development of Hydro-fracturing unit for Directional Drilling...

... in October 2012. Upstream Oil & Gas asian rock mechanics symposium arms8 seismic event renewable energy Earthquake water pressure Reservoir Characterization drawdown song tranh 2 seismicity Sapporo Vietnam water level hydropower project october 2014 seismic activity HPP trinh...

... of coal seam mechanism for rock burst prevention and control in region. reservoir geomechanics mechanism prevention prevent rock burst hydraulic fracturing water pressure rock burst prevention Artificial Intelligence coal seam high pressure hydraulic Reservoir Characterization rock burst...

... pressure wet condition water pressure slip surface dump material Upstream Oil & Gas critical slip surface water condition waste dump material slope angle Chakraborty moisture content safety factor dump slope wet water condition side slope Stability Analysis of a Mine Waste Dump Over...

... transportation double deck tunnel water pressure shaft Reservoir Characterization Seoul middle deck slab double-level tunnel Self Weight cross section Korea consideration light vehicle tunnel ventilation Design Focuses on Double-Level Tunnel Project in Seoul, South Korea Jae-Ho Jeonga*, Duk...

... and evaluation of observations and measurements of stress release and permeability improvement and outburst potentials after hydraulic flushing. The results show that the critical water pressure and the effective water pressure for coal breakage for Huainan mining area are in the ranges of (10~15) and (12~20)f...

... Reservoir Characterization displacement artificial ground freezing metals & mining McArthur River Operation structural geology Design Procedure monitoring construction excavation Athabasca Basin weak rock mass Engineering water pressure mechanical cutting 1 ISRM...

... knowledge management metals & mining structural geology Artificial Intelligence Reservoir Characterization flow in porous media slope design slope design practitioner Fluid Dynamics open pit project strength water pressure reservoir geomechanics Upstream Oil & Gas Rock...

... of a straight line. There are numerous analytical methods for the rock slope stability including limit equilibrium, stress analysis and stereographic methods. This paper has tried to explore the effects of forces due to water pressure on discontinuity surfaces in plane failure through applying the improved...

.... In this paper the particle flow code (PFC) theory is introduced to research rock mass' complex seepage property in mesoscopic aspect. To different water pressure and lateral compression the cracks' propagation rule is not identical. The rack's dip angle and distance of two cracks also affect propagation rule...

..., tunnel construction in urban areas with low overburden and conditions with very high ground water pressures above 10 bar. In hard rock the project demands are characterized by long tunnel drives, high overburden and abrasive rock masses such as the conditions faced with the project for the rail crossing...