环境友好型竖井材料的排水特性研究

Research on Drainage Characteristics of Environmental Friendly Materials

排水固结法是目前软土地基处理中常用的一种方法,该法可较好的解决地基的沉降和稳定性问题,常采用砂和塑料排水板作为竖井材料。为了节省造价同时保护生态环境,提出了利用秸秆草绳和废旧衣物等材料代替砂或塑料排水板作为排水材料的想法。试验通过对设置不同材料的模型地基进行固结压缩对比,从而获得不同材料竖井地基的排水特性。结果发现:秸秆草绳和废旧衣物均可起到竖向排水井的功效;秸秆草绳的排水效果较好,但是埋藏在软土中的草绳在两个月后腐烂,耐久性不理想;旧衣物的强度下降不明显,其耐久性能满足软土地基排水要求。

Drainage consolidation method ,utilizing sand and plastic drainage plates as shaft materials commonly ,is a common method in the treatment of soft soil foundations at present .It can better deal the problems of foundation settle-ment and stability .In order to save cost and preserve the ecological environment ,recycled materials such as straw ropes and recycled clothing were proposed to replace sand and plastic plates as shaft materials for the drainage wells .Through the indoor experiments ,the drainage characteristics of different materials used in different foundation models were ob-tained based on the comparison of consolidation tests .The results indicate that both the straw ropes and the recycled clothing can serve as the vertical drainage well with the straw ropes being better ,however ropes rot in two months after buried in the soft soil ,so its durability is unsatisfactory .While recycled clothing has similar strength as the ropes ,and its durability can basically meet the drainage requirements of soft soil foundations .