DISCUSSION OF SEISMIC FAILURES ON CHILEAN TAILINGS DAMS

THE AUTHORS HAVE SHOWN THE WAY FAILURE OCCURS IN WASTE- RETAINING DAMS IN CASE OF SEISMIC SHOCK, AND ON POSSIBLE MEASURES FOR AVOIDING THEM. HOWEVER, A FEW POINTS STILL REMAIN UNCLARIFIED, DUE TO THE FACT THAT THE RUPTURE OCCURRED AT THE TIME OF A SEISMIC SHOCK. THE WRITER HAS DEALT WITH VARIOUS CASES OF FAILURES PRODUCED IN STATIC CIRCUMSTANCES. THE WRITER REPORTS THREE CASES WHICH WERE FAILURES WITH OVERALL INSTABILITY. IN TWO, THERE WAS LIQUEFACTION OF THE STORED WASTES, BUT, DUE TO ABSENCE OF DYNAMIC EFFECT, THERE CAN BE NO DOUBT THAT THIS LIQUEFACTION OCCURRED AS A RESULT OF THE DEFORMATIONS CAUSED BY THE FAILURE OF THE DAM. IT APPEARS THAT MANY STRUCTURES OF THIS KIND EXIST IN THE WORLD WITH A SAFETY FACTOR CLOSE TO UNITY, EVEN IN STATIC CONDITIONS. THE MOST LIKELY FAILURE IN A STRUCTURE THAT GROWS UPWARDS INDEFINITELY IS THE FOUNDATION FAILURE, AND THIS IS THE TYPE OF MOVEMENT CONSIDERED IN THE THREE CASES DESCRIBED. REFERENCES: SEISMIC FAILURES ON CHILEAN TAILINGS DAMS, RICARDO DOBRY AND LEONARDO ALVAREZ, ASCE, (PROC. PAPER 5582), NOVEMBER 1967.

  • Supplemental Notes:
    • Vol 95, No SM1, PP 367 - 371, 1 FIG, 2 TAB, 1 REF, APP
  • Authors:
    • Salas, J A
  • Publication Date: 1969-1

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00235498
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 15 1994 12:00AM