岩土力学2025，Vol.46Issue(9)：2805-2815,11.DOI:10.16285/j.rsm.2025.0398
环式管袋堆场蓄淤脱水特性试验研究
Experimental study of dewatering characteristics of ring-type tube stockyard sludge storage
摘要
Abstract
To address the low dewatering efficiency and prolonged occupation period of traditional dredged sludge yards,a novel ring-type tube stockyard sludge storage and dewatering technology was proposed.Long-term laboratory experiments were conducted to investigate the dewatering dynamics,focusing on the synergistic effects of geotextile filters and dimensional parameters.The mathematical expressions for each stage of the sludge dewatering process in the ring-type tube stockyard were clarified.The results indicate that in a double-layer ring-type tube stockyard without a geotextile membrane,the sludge dewatering process consists of three stages:solid-liquid separation,seepage,and evaporation,which change linearly,exponentially,and linearly,respectively.In a double-layer ring-type tube stockyard with a geotextile membrane,the sludge dewatering process is divided into four stages.The dewatering rates in the solid-liquid separation and seepage stages are significantly accelerated,leading to improved overall dewatering efficiency.Mechanistically,this acceleration results from the geotextile membrane's effectiveness in preventing solid sludge particles from clogging the inter-thread gaps in the ring-type tubes.In an eight-layer ring-type tube stockyard,the sludge dewatering process is divided into five stages,introducing a linear change stage of sudden settlement compared to the double-layer stockyard.The mathematical descriptions of the other stages are similar to those of the double-layer stockyard.As the ratio of yard height to inner diameter increases,the sludge settlement distribution takes on an"inverted cone"shape,with maximum settlement occurring at the center,thereby enhancing overall dewatering efficiency.These findings are crucial for the efficient utilization of limited storage space for dredged sludge.关键词
环式管袋堆场/室内模型试验/淤泥沉降/脱水特性/淤泥减量Key words
ring-type tube stockyard/indoor model test/sludge sedimentation/dewatering characteristics/reduction of sludge分类
建筑与水利引用本文复制引用
来志强,白盛元,陈林,邹维列,徐书岭,赵连军..环式管袋堆场蓄淤脱水特性试验研究[J].岩土力学,2025,46(9):2805-2815,11.基金项目
国家重点研发计划项目(No.2023YFC3206203) （No.2023YFC3206203）
河南省优秀青年科学基金项目(No.232300421065) （No.232300421065）
湖北省重点研发计划项目(No.2023BCB112) （No.2023BCB112）
国家自然科学基金(No.U2443215,No.52379066) （No.U2443215,No.52379066）
北京江河水利发展基金会水利人才发展资助项目(No.JHYC202306).This work was supported by the National Key Research and Development Program of China(2023YFC3206203),the Henan Province Outstanding Youth Science Foundation Project(232300421065),the Hubei Provincial Key Research and Development Program Project(2023BCB112),the National Natural Science Foundation of China(U2443215,52379066)and the Water Conservancy Talent Development Funding Project of the Beijing River and Water Conservancy Development Foundation(JHYC202306). （No.JHYC202306）
