Fundamental Researches on Settlement of Waste Reclaimed Land by Putrefaction of Organic Materials

废弃物的腐败是废弃地复垦中的主要问题之一。用有机材料比如厨房垃圾本文在实验室规模的试验中研究了有机废弃物在加速条件下腐烂引起的W.R.L.的物理和化学性质的变化，为了再现加速条件下腐烂引起的W.R.L.现象，设计了一个用纤维素代替有机废弃物的W.R.L.模型。该模型采用纤维素酶分解纤维素，并对几种改变纤维素体积的W.R.L.模型进行了测试。对W.R.L.模型的密度、沉降、强度等物理化学性能进行了测试。(1)实验室W.R.L.模型试验对于研究有机废物材料的腐败性能是有效的。E.R.L.by (2)有机废弃物的腐烂和随后的固结是W.R.L.沉降的因素。(3)由于有机废弃物的腐烂，垃圾填埋场沉降后，垃圾填埋场的密度和强度都有所增加。(4)在有机废料百分比很小的W.R.L.的情况下，沉降受到无机材料结构的限制，并且在振动条件（例如地震）时可能会发生一些沉降。

Putrefaction of waste materials is one of the serious problems in waste reclaimed land (W.R.L.) with organic materials such as kitchen garbage. In this study the changes of physical and chemical properties of W.R.L.owing to putrefaction of organic waste materials were investigated in the laboratory scale tests.In order to reproduce the phenomena of W.R.L.owing to putrefaction in accelerated conditions, a W.R.L.model using cellulose in place of organic waste materials was devised. Cellulose was resolved by cellulase in this model.Several W.R.L.models in which cellulose volume was changed were tested. Physical and chemical properties of W.R.L.models, such as density, settlement and strength, were measured.The following results were obtained from these tests.(1) The laboratory W.R.L.model tests are valid for investigating the performance of E.R.L.by putrefaction of organic waste materials.(2) Putrefaction of organic waste materials and the following consolidation are the factors in the settlement of W.R.L.(3) The density and strength of W.R.L.increase after the settlement of W.R.L.owing to putrefaction of organic waste materials.(4) In case of the W.R.L.whose percentage of the organic waste materials is small, the settlement is restrained by the structure of the inorganic materials and some sttelment may occur at the time of vibrating conditions such as earthquakes.