CHEN Diji. 2009: SUGGESTIONS FOR SOME ISSUES|IN|DAM CONSTRUCTION AFTER THE WENCHUAN EARTHQUAKE. JOURNAL OF ENGINEERING GEOLOGY, 17(3): 289-295.
    Citation: CHEN Diji. 2009: SUGGESTIONS FOR SOME ISSUES|IN|DAM CONSTRUCTION AFTER THE WENCHUAN EARTHQUAKE. JOURNAL OF ENGINEERING GEOLOGY, 17(3): 289-295.

    SUGGESTIONS FOR SOME ISSUES|IN|DAM CONSTRUCTION AFTER THE WENCHUAN EARTHQUAKE

    • The safety of dams becomes one of the major issues concerned greatly by the general public and professional communities in the Wenchuan Earthquake. This paper proposes some polices and suggestions for how to response to the possible and potential great risks brought by strong earthquakes in dam construction. This issue should be considered from two aspects: one is the development level of earthquake sciences and the other is the extreme significance of dam safety. On one hand, the study of seismic geological environment should be paid significant attention from the strategic level in the watershed planning and professional planning of hydropower. The conventional concept that the cascade dams must be jointed together must be used for generating electricity should also be abandoned. The planning of hydropower stations on the rivers where strong earthquakes may occur nearby should be absolutely forbidden. On the other hand, some sensitive regions, especially the regions with complex geological background and low magnitude earthquake in history, shoud be paid more attention from the tactical level. In the engineering geological investigation, a great importance should be given to the stability of the rock masses and mountains under intensive ground motion at or nearby the dam sites in earthquake zone. It has been recognized that it is more difficult for us to understand the stability of the rock masses and mountains and to stabilize them than to the seismic design of dams. However, their hazards to dams may be more serious than the seismic damage of dams themselves.  The safety of dams becomes one of the major issues concerned greatly by the general public and professional communities in the Wenchuan Earthquake. This paper proposes some polices and suggestions for how to response to the possible and potential great risks brought by strong earthquakes in dam construction. This issue should be considered from two aspects: one is the development level of earthquake sciences and the other is the extreme significance of dam safety. On one hand, the study of seismic geological environment should be paid significant attention from the strategic level in the watershed planning and professional planning of hydropower. The conventional concept that the cascade dams must be jointed together must be used for generating electricity should also be abandoned. The planning of hydropower stations on the rivers where strong earthquakes may occur nearby should be absolutely forbidden. On the other hand, some sensitive regions, especially the regions with complex geological background and low magnitude earthquake in history, shoud be paid more attention from the tactical level. In the engineering geological investigation, a great importance should be given to the stability of the rock masses and mountains under intensive ground motion at or nearby the dam sites in earthquake zone. It has been recognized that it is more difficult for us to understand the stability of the rock masses and mountains and to stabilize them than to the seismic design of dams. However, their hazards to dams may be more serious than the seismic damage of dams themselves. 
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