共查询到17条相似文献，搜索用时 734 毫秒
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该书共分19章，包括附录在内约800余页，70万字左右，该书由颇有声望、学识与工程经验俱丰的一位工程师撰著。其最大特点是各章内容基本按照岩土工程项目典型的工作程序撰写，逐步将你引入岩土工程勘察、设计、施工等各个阶段或环节，从接受业主委托、提出工程建议书(初步报告或可行性报告)，直至工程结束时编写岩土工程最终报告。因此，该书具有良好的可读性和很强的实用性。 相似文献
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Geotechnical aspects of domestic on‐site effluent systems (septic tanks) and their impact on groundwaters are discussed and the limited relevant literature is reviewed. While there are few Australian case studies, the early stages of an ongoing study at Dodges Ferry, Tasmania, show a connection between shallow aquifer quality, number of residences and domestic on‐site wastewater disposal practices. Of 26 groundwater samples analysed, a number fail to meet established criteria for potable use. Most samples were highly or very highly saline. This renders them unpalatable and has an adverse impact on vegetation if the water is used for irrigation. Several samples had pH less than 6.0 and those taken from shallow wells were discoloured by leached soil organic matter. Elevated nitrate levels, an indicator of contamination by sewage effluents, were found at nine locations and these were usually associated with small clusters of residences. One very high sample was clearly contaminated by effluent from an adjacent on‐site wastewater disposal system. One odorous, black organic seep was found at the foot of the dunes backing a bathing beach and this gives cause for concern that failing on‐site wastewater disposal systems are contributory to reduced bathing water quality. Faecal coliforms and Escherichia coli were not found, even in samples with the highest nitrate concentrations, suggesting that residence time has been sufficient for bacterial die‐off. Contamination of shallow aquifers is greatest where there is a high density of residences with small lots. 相似文献
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该书作者为Robert W．Day（美），McGraw-Hill出版公司1999年出版，全书共分19章，包括附录共约800余页，估计约70万字。 相似文献
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V. Marinos G. Prountzopoulos P. Fortsakis D. Koumoutsakos K. Korkaris D. Papouli 《Geotechnical and Geological Engineering》2013,31(3):891-910
Existing experience from the design and construction of underground works is of major importance for the improvement of the construction methods and procedures in tunnelling, especially under adverse and complex geological and geotechnical conditions. This experience can be of great value to geotechnical engineers and engineering geologists, if data acquired through the ground investigation, the design and the construction is systematically collected, categorized and stored in a properly structured database that enables a targeted access to it, as well as to proceed to correlations and analysis, based on engineering criteria. Such a database should be carefully designed to “connect” all available data through all the phases of a tunnel project and premises deep knowledge from the geological and geotechnical investigation to the final design and construction. In order to make substantial use of the experience accumulated from the construction of a great number of tunnels, a database named Tunnel Information and Analysis System (TIAS) was developed. The data source for TIAS database was 62 tunnels of the Egnatia Highway in northern Greece, many of which have been constructed under difficult geological conditions in weak rock masses. The data processed by TIAS came from a variety of sources such as geological mapping, boreholes, laboratory and in situ testing, geotechnical classifications, engineering geological behaviour, groundwater, design parameters, information concerning immediate support measures, construction records and cost. The purpose of the system, besides incorporating extended and multi-source data for easy access, is to provide a tool for turning data into usable information for the comparison of anticipated and encountered geological and geotechnical conditions, the evaluation of geotechnical classification and design methods and the relations regarding rock mass conditions and behaviour and immediate support methods and types. 相似文献
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Escudero Christian R. Ramirez Gaytan Alejandro Zamora Camacho Araceli Preciado Adolfo Flores Karen L. Gomez Hernandez Adan 《Natural Hazards》2022,110(1):247-267
Natural Hazards - We performed a seismic vulnerability assessment that involves geotechnical and building structure analysis for Puerto Vallarta, Mexico, a city located along the pacific coast.... 相似文献
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Johan Spross Lars Olsson Håkan Stille 《Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards》2018,12(3):183-189
The Swedish Geotechnical Society has adopted a general methodology for risk management in geotechnical engineering projects to reduce the costs related to negative outcomes of geotechnical risks. This technical note highlights the main features of the methodology and strives to inspire the international geotechnical community to apply sensible risk management methods. In the authors’ opinion, a successful geotechnical risk management needs to be structured, be tailored to the project, and permeate the engineers’ everyday work. Then, sufficient quality can be achieved in the project with larger probability. 相似文献
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A 132 kVA electrical transmission line has been proposed to connect the towns of Eket and Ikot Abasi in the eastern Niger
delta in Nigeria. A geotechnical and hydrological study was performed to geotechnically characterize the route alignment and
to provide data for design of the foundations for the transmission towers. In this paper, we introduce the study location
and its geological, topographical and physiological characteristics, present the hydrological and geotechnical investigations
and their results, and make recomendations for the design of the transmission tower foundations. Hydrological inspection of
the power line alignment revealed that the route is traversed by numerous tributaries of the Qua-Iboe and Imo Rivers, the
two major rivers that control the drainage of the study area. In-situ geotechnical tests consisted of cone penetration tests
(CPTs), vane shear tests, test pit sampling (0–2.0 m depth) and lithologic boreholes (20 and 50 m deep). Laboratory tests
included grain size analysis, pH determination and Atterberg Limits. Based on the CPT log pattern, no of stratum, and refusal
depths, the soils along the transmission alignment were classified into twelve structural domains having common geotechnical
properties. Because of the elevated water levels, and the nature of the soils, deep pile foundations were recommended for
the towers. Software from the Louisiana Transportation Research Center, was employed to estimate skin friction, end bearing,
and ultimate bearing capacities for assumed 225 mm square shaped reinforced concrete pile in each of the different zones of
the alignment. 相似文献
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Geotechnical characterization and analysis of rainfall—induced 2009 landslide at Marappalam area of Nilgiris district,Tamil Nadu state,India 总被引：1，自引：0，他引：1
Landslides are frequently occurring natural hazards in Nilgiris district of Tamil Nadu, India, particularly during monsoon season. The present study describes the geotechnical characterization and analysis of rainfall-induced landslide that occurred at Marappalam location of Nilgiris district on November 10, 2009. The detailed investigation comprises mapping of landslide, topographical survey, field and laboratory investigations, characterization of soil and rock, and numerical analysis. Field study comprises borehole and geophysical investigations. Detailed laboratory investigation was performed to identify index and engineering properties of soil and rock. Based on the results obtained from field and laboratory investigations, the generalized subsoil profile of Marappalam slope has been plotted. The investigations revealed that loose and soft soil layer with low permeability and plasticity interspersed with boulders could be the main source of debris flow. Scanning electron microscopic analysis and x-ray diffraction analysis were performed to study the influence of weathering on slope failure. Failure mechanism of Marappalam 2009 landslide was identified from the numerical analysis performed using landslide simulation program LS-RAPID. The analysis revealed that the 5-day antecedent rainfall (303 mm) and intense rainfall on 10th November 2009 (405 mm) saturate the slope due to infiltration of rainwater. This leads to a decrease in the matric suction and subsequent development of positive pore water pressure, which in turn reduces the shear resistance of the soil along with shear displacement, and resulted in a progressive failure. 相似文献
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Aniekan Edet 《Geotechnical and Geological Engineering》2018,36(1):135-149
Sandstones are present in enormous quantity in parts of south-eastern Nigeria. However, engineering data for project design and construction are unavailable for these sandstones, which serve as aggregates and foundation for many infrastructures. Besides, it is expensive and time consuming to perform direct tests in the field to generate these data. This work presents an engineering evaluation for some of sandstones based on relatively simple and cheap tests and relationship. The aim was to determine compressive strength, Young’s modulus, density, porosity and water absorption. These physio-mechanical parameters were then used to establish relationships. On the basis of these relationships, an evaluation scheme was developed. The parameters with good relations were used to develop predictive equations for estimating uniaxial compressive strength. Evaluation of sandstones from south-eastern Nigeria showed variations from not suitable to suitable as construction materials. Practically, field observations showed no adverse effects on buildings and roads where these sandstones have been used for construction as foundations and aggregates. 相似文献
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Vidar Kveldsvik Herbert H. Einstein Bjørn Nilsen Lars Harald Blikra 《Rock Mechanics and Rock Engineering》2009,42(5):689-728
The unstable 650,000 m2 Åknes rock slope (Western Norway) poses a hazard, as a sudden failure may cause a destructive tsunami in the fjord. In this study the slope was divided into blocks based on displacements measured at the slope surface. Discontinuous deformation analysis (DDA) showed that three or four blocks in the upper half may be considered as potential subareas that may fail catastrophically. The lower half may be divided into two or three blocks, but more limited data introduces more uncertainty into block definition. The Universal Distinct Element code (UDEC) was used for two-dimensional (2D) stability analyses. By varying fracture geometry, fracture friction, and groundwater conditions within reasonable limits based on site-specific data a number of possible models were compared. The conclusions show that models that were unstable to great depths were in closer agreement with shear strength parameters derived from an earlier study than models that were unstable to smaller depths. The length (depth) of the outcropping fracture, along which shear displacements are shown to occur, plays an important role. A (shallow) slide at 30 m, in which displacements have been documented by borehole measurements, will reduce the stability at greater depths. Increased groundwater pressure is demonstrated to be less critical for very deep slope instability. The results of the DDA and UDEC modelling will be useful for planning of future investigations, interpretation of the subsequent results, further development of the early warning system and in the tsunami modelling. 相似文献
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Geotechnical and Geological Engineering - 相似文献
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Castorina Silva Vieira 《Geotechnical and Geological Engineering》2012,30(2):511-512
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Sanjay Kumar Shukla 《Geotechnical and Geological Engineering》2011,29(4):611-612