Session Start Date

6-1-1988

Abstract

Ground expansion and finally sliding occurred in one corner of the 25 m deep open excavation for the powerhouse. The movement occurred in a slickensided claystone overlain by water bearing sandy gravel. The cause was expansion of the claystone followed by its weakening from water pressure in the open slickensided cracks. The excavation was finally stabilized by drainage plus reinforced sloping walls restrained by cable anchors in the rock below. The paper summarizes the pertinent soil and rock properties and describes the analyses of the movements, the corrective measures and their varied performance, an9 the professional lessons to be gained.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Second Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1988

Document Version

Final Version

Rights

© 1988 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Jun 1st, 12:00 AM

Movement in the Powerhouse Excavation Saguling Project, Indonesia

Ground expansion and finally sliding occurred in one corner of the 25 m deep open excavation for the powerhouse. The movement occurred in a slickensided claystone overlain by water bearing sandy gravel. The cause was expansion of the claystone followed by its weakening from water pressure in the open slickensided cracks. The excavation was finally stabilized by drainage plus reinforced sloping walls restrained by cable anchors in the rock below. The paper summarizes the pertinent soil and rock properties and describes the analyses of the movements, the corrective measures and their varied performance, an9 the professional lessons to be gained.