Development and Failure Principle of Differential Weathering Overhanging Rock
ZHANG Yong xing,LU Li,ZHANG Si ping and HU Dai wen
DOI:10.11835/j.issn.1674-4764.2010.02.002
Received July 10, 2009,Revised , Accepted , Available online July 01, 2015
Volume ,2010,Pages 1-6
- Abstract
Differential weathering overhanging rock by hard rock and soft rock interlayer is common for geological failure.To study the influence of ground stress in rock slope and cave deepness to differential weathering overhanging rock,a mechanical model was proposed.And hollow cylinder stress meter was used to test and analyze on site ground stress at Hongyadong in Chongqing.Moreover, the development range of overhanging rock was determined.And a case studywas used to analyze the relationship among tension ground stress, cave deepness and growth of controlling crack.A method for forecasting overhanging rock failure pattern was proposed.