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Analysis and prevention of sinkhole collapses during the reconstruction and extension of Guang-Qing freeway, china
- Source :
- Environmental Earth Sciences. 75
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- The Guang-Qing freeway reconstruction and extension project is located in Guangdong province, China, extending from Guangzhou city to Qingyuan city. The total project length is 57.6 km, 33 km of which is in a karst area where sinkhole collapses are common. Therefore, there were concerns about the safety and security of the roadbed, bridge piles, and other structures associated with the original roadway. The study addresses karst development, covering layer (overburden), and external factors that contribute to catastrophic sinkhole collapse along the project. The study found that the formation of sinkhole collapses is affected significantly by the degree of karst development and soil characteristics, including thickness. Collapses may be triggered directly by external factors that disturb the natural equilibrium. Such factors include heavy rainfall that impacts soil and groundwater conditions, as well as vibration and groundwater flow disruptions that are caused by pile construction and other engineering activities. Prevention measures were adapted to local conditions and optimized based upon safety, reliability and cost-effectiveness.
- Subjects :
- Global and Planetary Change
geography
geography.geographical_feature_category
Groundwater flow
Sinkhole
0211 other engineering and technologies
Soil Science
Geology
02 engineering and technology
010502 geochemistry & geophysics
Karst
01 natural sciences
Pollution
Natural (archaeology)
Overburden
Environmental engineering science
Environmental Chemistry
Geotechnical engineering
Pile
Groundwater
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Earth-Surface Processes
Water Science and Technology
Subjects
Details
- ISSN :
- 18666299 and 18666280
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Environmental Earth Sciences
- Accession number :
- edsair.doi...........704c596f60653cc50f742c9ff97a49c8