..., these approaches lack systematic analysis and evaluation on their effect against squeezing ground. The performances of these tunneling methods still need to be investigated in detail. Rock Deformation conventional shotcrete Excavation Sequence strength numerical analysis shotcrete pilot method tunnel...

... of coarse grained sands and gravels. Although the weights of these overlying materials are currently taken into account when assessing tunnel stability, the contribution of their strength and stiffness on tunnel stability is difficult to quantify. Centrifuge model testing has proven to be a very powerful...

... purposes. There has been a tendency to also use the resulting empirical ratings to determine the constitutive laws as well as failure criteria now employed with the majority of numerical models. metals & mining roughness assessment milne strength rock mass classification system block size...

... modeling to investigate the strength and stability of the opening for the power house, integral shear resistance of rock mass and limiting strains developed in the rock surrounding the opening. The experimental modeling studies proved useful for obtaining the reliable and comprehensive data on the behavior...

... of GeoEng 2000 to select Ground Improvement and Reinforcement as one of the major topics for up-dating the state of art on this subject since 1981. strategic planning and management US government strength consolidation process vacuum consolidation Reservoir Characterization Upstream Oil...

... ABSTRACT: Although the shear strength expression proposed by Coulomb (1776) for masonry, brick and earth, made up of cohesion and friction components, is still in general use today, it was not until Terzaghi (1936) presented the principle of effective stress that it could be used...

... classification’. Particular issues discussed include: mixed face conditions, abrasion, assessment of strength, swelling, relic joints, erosion, hardpans and collapse. INTRODUCTION Rocks affected by tropical weathering are prevalent over a significant proportion of the earth's surface. Although such rocks...

.... In these circumstances, compaction grouting, with its small, maneuverable and vibration-free equipment, is effective in achieving the improvement needed without adversely affecting surrounding features. strength knowledge management drilling operation permeation SuperJet application compaction contractor...

... ABSTRACT: The suitability of paper mill and construction sludges as landfill cover materials has been examined in view of the scarcity of natural clay sources and reducing waste disposal cost at landfill sites. The results of consolidation, shear strength and hydraulic conductivity tests have...

... and also minimize the need for landfilling. Utilization of wastes as construction or geotechnical material has been strongly recommended, and many attempts of geotechnical applications have been undertaken. solid waste management water management concentration strength Upstream Oil & Gas...

.... metals & mining Aznalcóllar chemical reaction flow in porous media strength boliden apirsa Fluid Dynamics Geomembrane geomembrane panel immersion test cement-bentonite material permeability reaction acid water Upstream Oil & Gas concentration reaction front dyke river Design...

... of view. Discussed in the paper are the factors that influence the selection of a particular ground important technique, or a combination of techniques. A recent case study is also presented to demonstrate the selection process. reservoir geomechanics strength resistance US government...

... and lithological information, an hydrogeological model that permits water pressures to be estimated throughout the slope, estimates of rock mass and discontinuity strength and deformation properties and an understanding of external forces, such as those due to earthquakes, that may be imposed on the slope. Site...

... is the subject of current studies, and it can be shown that strong stiff reinforcement is efficient and effective and that multiple layers of extensible material of medium strength can also be used. Recent developments in composite materials include reinforcement with inbuilt drainage; these have been shown...

... ABSTRACT: This paper is in two parts. The first part presents an overview of the strength of intact rock. A short commentary on various methods of fitting failure criteria to experimental data follows, it is demonstrated that the method of fitting the criterion to the test data has a major...

... changes was more heavily felt. OBJECTIVES AND SCOPE OF INVESTIGATION The hydraulic properties cover the cross-plane permeability and pore size of the geotextiles. strength grab strength direction fibre wave condition pore size Singapore cross-machine direction elongation degradation...

... ABSTRACT: Several significant design and construction issues related to geotechnical engineering of the Trans-Tokyo Bay Highway project are described. They are a) large scale improvement of existing soft clay deposits by in-situ cement mixing, controlling the strength of cement-mixed soft clay...

..., although the effectiveness is not the same. The potential benefits of adding fly ash to the engineering properties such as small plastic strain, high resilient modulus and strength under repeating load condition are interesting and useful as pavement materials. INTRODUCTION Ariake clay is a special...

... Upstream Oil & Gas main factor specimen overconsolidated region clayey soil cement content failure envelope triaxial compression test cement OCR sandy soil overconsolidation ratio strength property strength water content characteristic kPa irrespective ABSTRACT...

... ABSTRACT: The stone column technique of ground improvement is extensively used to improve the strength of weak soil layers. Stone columns essentially increase the bearing capacity of cohesive soils. In cohesive soils, the drainage path provided by stone columns accelerates the rate of residual...