Assessment of the permanent deformation at the earth core of a rockfill dam under heavy vehicle loading

Abstract

Dams are structures designed primarily for water containment. They usually are found in areas with special transportation needs, either for mining purposes or for transporting heavy equipment, and with limited road infrastructure available. Heavy traffic over dams is discouraged , due to the damage this can cause to the integrity of the structure. The possible deformations caused by the passage of vehicles on the dam crest are not typically considered in the design of earth dams; however, the authorization of vehicle traffic on dams can be beneficial both economically and environmentally. A tolerance criterion is required to determine the allowable vehicle load on the dam crest. This paper presents an analysis of the permanent deformation caused in the core of a rockfill dam. Stress conditions that may be associated with a rapid accumulation of permanent deformation were identified, and an analysis method is proposed to specify the acceptable heavy traffic conditions for the dams.

Dynamic risk assessment of slope stability of homogeneous earth-rock dam under action of multiple hazards

“…Thus, the safety problems of this type of dam are prominent and are valued by the engineering community. 1,2 In China, there are 98,002 reservoirs of various types built and under construction, of which 756 are large-scale, 3938 are medium-sized, and 93,308 are small-scale, with a total storage capacity of 932.312 billion m 3 . So far, some reservoirs have some serious problems, which will lead to dam break, 3 such as facilities aging, 4 disrepair, reservoir siltation, 5 and culvert leakage.…”