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首页> 外文期刊>Waste management & research >Interpretations of surface movements of a landfill built on steeply sloping ground. A cautionary case history
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Interpretations of surface movements of a landfill built on steeply sloping ground. A cautionary case history

机译：解释在陡峭地面上建造的垃圾填埋场的表面运动。警示案例记录

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摘要

The surface of a municipal solid waste (MSW) landfill cell, built on steeply sloping ground, was discovered to be moving downhill. The movements were measured and considered by the owners to be alarming. In an attempt to stop the movement, the compacted soil stability berm at the toe of the cell was raised by 5 m in two stages. The rate of movement declined, but the waste surface continued to move. Eventually, the cell was not filled to its designed full level. The paper describes the design of the landfill cell and its underliner, as well as three independent investigations into the causes of the surface movement. The first two investigators assumed that the surface movements represented shear displacements at the interface of the geomembrane and its protective geo-fabric, and therefore that the cell was failing in shear. The third investigation, undertaken in preparation of evidence in a civil court case, 7 years later, concluded that the movements resulted from down-slope shear straining of the land-filled MSW. The later investigation concluded that the MSW cell had been, and is still shear-stable, and it points to differences in behaviour between MSW landfill slopes and comparable slopes in mine waste or natural soils.
机译：发现在倾斜陡峭的地面上建造的市政固体垃圾（MSW）垃圾填埋场表面正在下坡。所有者对这些移动进行了测量并认为这令人震惊。为了阻止移动，分两步将牢房底部的压实土壤稳定性护堤提高了5 m。移动速度下降，但是废物表面继续移动。最终，该单元未达到其设计的完整水平。本文介绍了垃圾填埋场及其衬板的设计，以及对表面运动原因的三个独立研究。前两个研究人员假设表面运动表示土工膜及其保护性土工织物的界面处的剪切位移，因此该单元无法进行剪切。 7年后，为准备民事诉讼的证据而进行的第三次调查得出的结论是，移动是由于填埋的城市固体废弃物的下坡剪切应变所致。后来的研究得出结论，城市固体废弃物单元一直且仍然是剪切稳定的，它指出了城市固体废弃物填埋场斜坡与矿山废物或天然土壤中可比斜坡之间的行为差​​异。

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