深部含水层黏弹塑固结模型及压密模拟

李洪然 张阿根

李洪然, 张阿根. 2012: 深部含水层黏弹塑固结模型及压密模拟. 工程地质学报, 20(3): 392-396.
引用本文: 李洪然, 张阿根. 2012: 深部含水层黏弹塑固结模型及压密模拟. 工程地质学报, 20(3): 392-396.
LI Hongran, ZHANG Agen. 2012: VISCOELASTIC-PLASTIC CONSOLIDATION MODEL FOR DEEP AQUIFER COMPACTION WITH TIME. JOURNAL OF ENGINEERING GEOLOGY, 20(3): 392-396.
Citation: LI Hongran, ZHANG Agen. 2012: VISCOELASTIC-PLASTIC CONSOLIDATION MODEL FOR DEEP AQUIFER COMPACTION WITH TIME. JOURNAL OF ENGINEERING GEOLOGY, 20(3): 392-396.

深部含水层黏弹塑固结模型及压密模拟

基金项目: 

国土资源部和上海市共同资助项目(200413000020)

详细信息
  • 中图分类号: TU443

VISCOELASTIC-PLASTIC CONSOLIDATION MODEL FOR DEEP AQUIFER COMPACTION WITH TIME

  • 摘要: 上海市曾遭受了严重的地面沉降灾害,主要由于浅部含水层开采引发浅部土层固结所致。之后采取了回灌浅部含水层并转向开采深部含水层的措施,地面沉降得到了有效控制。但21世纪初,通过水位及分层沉降监测,发现随着开采量增加,深部含水层也会成为主要压密土层。其变形呈现出显著的非线性压密特征,即使水位普遍抬升,压密仍然持续,开展其固结压密机理模型研究对地面沉降防治十分必要。传统太沙基理论认为砂土骨架是瞬时变形的,忽略了流变性本质,因此无法解释该现象。基于国内外学者的研究,考虑了前期固结压力前后流变性的差异,建立了深部含水层黏弹塑固结压密模型。通过试验获取了相关参数,结合塘桥F16分层标监测结果,对第四含水层长期压密变形进行了模拟。模拟结果很好地反映了含水层长期非线性压密行为,研究结果对指导防治地面沉降有实际意义。
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出版历程
  • 收稿日期:  2011-10-20
  • 修回日期:  2012-03-22
  • 刊出日期:  2012-06-25

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