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Study on the Strategy for Disposal and Management of Waste Slurry and Sopil from Large-diameter Slurry Shield
(1. School of Civil Engineering, Tsinghua University, Beijing 100084; 2. China Railway 14th Bureau Group Co., Ltd., Jinan 250101;3. CRCC Underwater Tunnel Engineering Laboratory, Jinan 250101; 4. Ocean University of China, Qingdao 266100)
Abstract In order to dispose of the waste slurry and spoil generated during construction of slurry shield, the proper? ties of slurry and spoil from large-diameter slurry shield and its disposal method are analyzed. By using the Yellow River Jiluo Road Tunnel in Jinan as the example, different methods for disposal of waste slurry and spoil are compared and analyzed. As the results indicate: Flocculent precipitation and belt pressure filtration are the most efficient disposal methods. The spoil that has experienced plate-frame pressure filtration can be directly transported out, but will impact the environment. For silty clay stratum, it is preferable to use the dewatering process that combines centrifugal dewatering and pressure filtration dewatering. At the end, the suggestions are offered regarding disposal and reuse of shield spoil from the perspective of management.
Abstract：
In order to dispose of the waste slurry and spoil generated during construction of slurry shield, the proper? ties of slurry and spoil from large-diameter slurry shield and its disposal method are analyzed. By using the Yellow River Jiluo Road Tunnel in Jinan as the example, different methods for disposal of waste slurry and spoil are compared and analyzed. As the results indicate: Flocculent precipitation and belt pressure filtration are the most efficient disposal methods. The spoil that has experienced plate-frame pressure filtration can be directly transported out, but will impact the environment. For silty clay stratum, it is preferable to use the dewatering process that combines centrifugal dewatering and pressure filtration dewatering. At the end, the suggestions are offered regarding disposal and reuse of shield spoil from the perspective of management.
WU Yankun1,
2 CHEN Jian2,
3 etc
.Study on the Strategy for Disposal and Management of Waste Slurry and Sopil from Large-diameter Slurry Shield[J] MODERN TUNNELLING TECHNOLOGY, 2024,V61(1): 229-235
2024, Vol. 61 