1 Scope

    This code specifies the main contents and methods of dam-siteengineering geological investigation, and provides the technicalrequirements for engineering geological characteristics research ofdam foundation, engineering geological evaluation of dam-site a......查看详细>>

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2 Normative References

    The following normative references contain provisions which,through reference in this text, constitute provisions of this code. Fordated references, subsequent amendments to (excluding errorcorrections), or revisions of, any of these publications do not a......查看详细>>

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3 General Principles

    3.0.1 This code is formulated in order to unify the contents andtechnical requirements of the dam-site engineering geologicalinvestigation for hydropower and water resources projects, make itcope with the requirements of GB 50287 and related regulations, ......查看详细>>

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4 Terminology and Definitions

    The following terminology and definitions apply to this code.4.0.1 Stress release zone of rock massFractured or relaxed scope in the shallow or superficial zone of therock mass, which is induced by stress redistribution, concentrationand release due to th......查看详细>>

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5.1 General provisions

    5.1.1 Engineering geological investigation for dam site area shallfollow the design procedures of hydropower projects, and begradually progressed in accordance with the five stages: planning,prefeasibility study, feasibility study, tender design and const......查看详细>>

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5.2 lnvestigation for basic geological conditions

    5.2.1 The dam site investigation for basic geological conditionsshall include the following main contents: topography, geomorphy,stratigraphic lithology, geological structure, physicogeologicalphenomena, karst and hydrogeological condition, etc.5.2.2 Inve......查看详细>>

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5.3 lnvestigation for physical and mechanical properties of rock and soil mass

    5.3.1 Investigation for physical and mechanical properties of rock(rock mass) shall include the followings.(1) Density, water absorption ratio, compressive (tensile) strength,shear (rupture) strength, modulus of elasticity, Poisson ratio andacoustic compr......查看详细>>

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6.1 Engineering geological mapping

    6.1.1 Engineering geological mapping for dam site in eachinvestigation stage shall be carried out in accordance with theprovisions of GB 50287 and DL/T 5185.(1) In process of geological mapping, measurements of stratigraphiccolumns, division of engineerin......查看详细>>

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6.2 Geophysical prospecting

    6.2.1 Methods of geophysical prospecting mainly contain electricalmethod, seismic wave method, ground penetrating radar method,elastic acoustic wave method, comprehensive downhole probemethod, CT tomographic imaging technology and radioactivemeasurement. ......查看详细>>

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6.3 Exploration

    6.3.1 Methods of exploration mainly involve drilling, adit, shaft,pit and trench, their arrangements shall follow the basic principlesbelow.(1) The arrangement of exploration works shall meet the relevantprovisions of GB 50287, combined with the project f......查看详细>>

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