Analysis on the Development Characteristics and Formation Factors of Collapse (Unstable Rock) at Permian Strata in Guizhou
详细信息
- 责任者：Xie Xingneng (Institute of Geo-environmental Monitoring of Guizhou Province ; Guiyang 550004 ; China) ; Yang Shengyuan
- 刊名：Guizhou Geology
- 出版年：2012
- 卷期：29(4)
- 关键词：崩塌 ; avalanches ; 危岩体 ; unstable rock ; 贵州 ; Guizhou Province
- 页码：p.290-294
- 图表：2 illus., 2 tables, 17 refs.
- 分类号：1800
- issnNo：ISSN1000-5943
- isbnNo：CN52-1059/P
摘要
Collapse(unstable rocks) is one of the major geo-hazard in Guizhou Province.When analyzing collapses in wildly distributed Permian strata in Guizhou Province,by using detailed survey data of major geo-hazards,it is found that rock collapses are mainly in gravity collapse at small scale; meanwhile,those collapses are more developed in carbonate rocks,especially in Qixia-Moukou groups whose dissolution fissures are developed. Moreover,the locations of collapses are mostly in the northwest and north of the province. As to the key factors causing collapse,the authors suggest that they are unloading fracture,dissolution fracture,steep landforms,climatic conditions and earthquakes.