|Table of Contents|

Stability Analysis of Weibei Pitted Loess Cave Dwellings in Rainfall Infiltration(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2012年03期
Page:
104-110
Research Field:
Publishing date:

Info

Title:
Stability Analysis of Weibei Pitted Loess Cave Dwellings in Rainfall Infiltration
Author(s):
HAN Jia-ming;  SU San-qing
School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China
Keywords:
rainfall infiltration;  Weibei pitted loess cave dwelling;  slope;  stability;  moisture content;  vertical joint fissure
PACS:
TU761.2
DOI:
-
Abstract:
The law of two kinds of loess physical and mechanical parameters changing with moisture content whether loess with or without vertical joint fissure was obtained through experimental analysis. Safety factor was defined by surrounding rock stress expression and Mohr-Coulomb strength criterion. Rainfall Infiltration depth was 286 cm and the minimum value of safety factor was 1.183 while effective rainfall was 277 mm that return period was 10 years. Rain could directly reach the cave surrounding soil that the mechanical parameters reduced with moisture content increasing and maximum value of safety factor was 1.183 when abandoned cave overlying soil had vertical joints. Meanwhile, stratified slope calculation formulae were obtained by Bishop slice method that the minimum value of stability safety factor was 5.537. Results show that when rainfall is 277 mm, loess cave dwelling is stable without vertical joint fissure and is damaged with vertical joints, and the slope is in the steady state.

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Last Update: 2012-09-20