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压缩加载条件下含水合物沉积物蠕变特性分析
Authors
张旭辉
李辉
+3 more
谢鹏飞
陆程
鲁晓兵
Publication date
28 December 2023
Publisher
Abstract
水合物开采可能诱发海底滑坡或其他工程地质灾害。实现水合物商业化开采需要中长期稳定产气,长期荷载下储层的蠕变特性是地层稳定性评价的基础力学参数。利用南海水合物储层粉黏土为试验介质在压缩加载条件下的系列固结排水蠕变测量试验结果,对粉黏土的蠕变特性进行了分析。结果表明,加载过程中,含水合物沉积物经历瞬时变形、固结变形和蠕变变形3个阶段;随着加载应力和水合物饱和度的提高,蠕变应变不断增加;修正的Singh-Mitchell蠕变模型可以较好预测不同应力水平和水合物饱和度下粉黏土的蠕变特性
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 25/05/2024