Engineering properties of excavated soil and analysis of post-construction settlement and capacity for pit landfill

被引：1
|
作者：
Yu S.-L. [1 ,2 ]
Ke H. [1 ,2 ]
Zhan L.-T. [1 ,2 ]
Meng T. [3 ]
Chen Y.-M. [1 ,2 ]
Yang C. [4 ]
机构：
[1] Geotechnical Research Institute, Zhejiang University, Hangzhou
[2] MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou
[3] College of Civil Engineering and Architecture, Zhejiang University, Hangzhou
[4] Hangzhou Lvnong Environment Engineering Co. Ltd, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 12期
关键词：
Capacity; Degree of consolidation; Excavated soil; Physical and mechanical property; Pit landfill; Settlement;
D O I：
10.3785/j.issn.1008-973X.2020.12.011
中图分类号：
学科分类号：
摘要：
The Huashan landfill in Deqing, Huzhou was investigated which had a 5-year landfill life and was in the condition of water landfill, in order to study the physical and mechanical properties of excavated soil and propose landfill methods to increase the capacity utilization rate of pit landfill and reduce the post-construction settlement. In-situ test and laboratory test indicate that the excavated soil has complex composition, low permeability, high compressibility, and the shear strength of it decreases with the increase of water mass fraction. And the compaction degree of the pit landfill, the bearing capacity of the foundation and the degree of consolidation are low. The LANDFILL program was used to analyse the settlement and the capacity of the pit landfill, and results show that the capacity utilization rate of the pit landfill is low, the post-construction settlement is large and it is not suitable to be directly used for agricultural land or construction land under the condition of water landfill. The capacity of the pit landfill can be greatly increased and the post-construction settlement can be effectively reduced by backfilling excavated soil under the condition of no water filling or lowering ground water. Results provided optimization direction, theoretical basis and data reference for the safety and capacity design of landfill, the foundation treatment and the underground building construction in excavated soil landfill areas. Copyright ©2020 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：2364 / 2376and2385
相关论文
共 36 条
  • [1] (2019)
  • [2] ZHANG Zhen, Centrifuge modeling and failure mechanism analysis of Shenzhen 12.20 catastrophic landslide, (2018)
  • [3] LAVIGNE F, WASSMER P, GOMEZ C, Et al., The 21 February 2005, catastrophic waste avalanche at Leuwigajah dumpsite, Bandung, Indonesia, Geoenvironmental Disasters, 1, 1, pp. 1-12, (2014)
  • [4] MERRY S M, KAVAZANJIAN E, FRITZ W U., Reconnaissance of the July 10, 2000, Payatas Landfill Failure, Journal of Performance of Constructed Facilities, 19, 2, pp. 100-107, (2005)
  • [5] STEIAKAKIS E, KAVOURIDIS K, MONOPOLIS D., Large scale failure of the external waste dump at the "South Field" lignite mine, Northern Greece, Engineering Geology, 104, 3, pp. 269-279, (2009)
  • [6] OMRACI K, TISOT J P, PIGUET J P., Stability analysis of lateritic waste deposits, Engineering Geology, 68, 3, pp. 189-199, (2003)
  • [7] XU Q, PENGQ, LI W, Et al., The catastrophic landfill flowslide at Hongao dumpsite on 20 December 2015 in Shenzhen, China, Natural Hazards and Earth System Sciences, 17, 2, pp. 277-290, (2017)
  • [8] YIN Y P, LI B, WANG W, Et al., Mechanism of the December 2015 catastrophic landslide at the Shenzhen landfill and controlling geotechnical risks of urbanization, Engineering, 2, 2, pp. 230-249, (2016)
  • [9] ZHAN L T, ZHANG Z, CHEN Y M, Et al., The 2015 Shenzhen catastrophic landslide in a construction waste dump: reconstitution of dump structure and failure mechanisms via geotechnical investigations, Engineering Geology, 238, pp. 15-26, (2018)
  • [10] GAO Rui-xiao, RONG Hui, WANG Hai-liang, Et al., Preparation and performance of 800 density grades muck-ceramsite, Bulletin of the Chinese Ceramic Society, 36, 5, pp. 1646-1650, (2007)
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