文献类型：期刊文献

英文题名：Criteria of sinkhole formation in soils from physical models

作者：Jiang, Fuwei

第一作者：姜伏伟

通信作者：Jiang, FW[1];Jiang, FW[2]|[144404e4a79bdaa84b263]姜伏伟;[14440bda2e96262ed9844]姜伏伟;

机构：[1]Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China;[2]Chinese Acad Geol Sci, Inst Karst Geol, Guilin 541004, Guangxi, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Chinese Acad Geol Sci, Inst Karst Geol, Guilin 541004, Guangxi, Peoples R China.|贵州理工学院;

年份：2020

卷号：79

期号：7

起止页码：3833-3841

外文期刊名：BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT

收录：;EI(收录号：20201508398838);Scopus(收录号：2-s2.0-85082875300);WOS:【SCI-EXPANDED(收录号:WOS:000520799900001)】；

基金：This work is supported by the social development fund of the support plan projects of Guizhou Science and Technology Department, China (No. [2016]2846) and the key research and development project of Guangxi Science and Technology Department, China (No. AB17195036).

语种：英文

外文关键词：Sinkhole; Criterion; Disintegration model; Circular pipe flow model; Hydraulic fissure model

摘要：This study addresses mechanical models of sinkhole formation and their criteria obtained via simulation test. Sinkholes are a common geohazard and are widely distributed throughout the world. Previous studies suggest that sinkhole formation is the result of complex interactions among geological conditions, with one or more factors triggering occurrence of sinkholes. We suggest that the existence of a void caused by soil loss is the premise of this issue. Therefore, we present soil loss is the mechanism of sinkhole formation in soils in this paper. Soil loss is caused by the interaction between groundwater and soils in nature. This interaction includes the groundwater condition and the characteristics of soils. In this study, we considered three types of groundwater conditions and two types of soils to discuss the mechanical model of sinkholes. There are three models of sinkhole formation in soils: the disintegration model in vadose zone, the seepage erosion model in unconfined aquifer, and the hydraulic fissures model in confined aquifer. A disintegration apparatus was designed to simulate the disintegration process and to obtain the criteria parameters of water content. Circular pipe flow equipment was designed to simulate the seepage erosion process to obtain the criteria parameter of groundwater velocity. The mechanical model of sinkholes in the confined aquifer was the hydraulic fissures model. The hydraulic equipment was designed to simulate the hydraulic fissure process to measure the criteria parameter of water pressure.