Distributed temperature sensing applied during diaphragm wall construction
Distributed temperature sensing applied during diaphragm wall construction
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DOI：
10.1139/cgj-2014-0522
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发表时间：
2017-02-01
影响因子：
3.6
通讯作者：
Hopman, Victor
中科院分区：
文献类型：
--
作者：
Spruit, Rodriaan;van Tol, Frits;Hopman, Victor
分布式温度传感技术可用于监测地下连续墙的生产过程。在沟槽中的膨润土浆料的更新期间，膨润土过滤器能够区分已经存在的或新鲜的膨润土悬浮液。在混凝土浇筑过程中，泥浆泵能够区分膨润土悬浮液和混凝土。因此，可以监控浇注过程的连续性和优质混凝土到达沟渠中的关键位置。在实验室模型上进行的试验为解释现场数据提供了参考信息。现场经验表明，重复测试的好处和参考测量的预测价值。将结果与同一位置的井间声波测井测量结果进行比较。
Distributed temperature sensing (DTS) can be used to monitor the production process of diaphragm walls. DTS is able to differentiate between already present or fresh bentonite suspensions during refreshing of the bentonite slurry in the trench. During concrete casting, DTS is able to differentiate between the bentonite suspension and concrete. As a result, the continuity of the casting process and the arrival of good grade concrete at crucial locations in the trench can be monitored. Tests conducted on laboratory models provided reference information for interpretation of field data. Field experiences have shown the benefits of DTS tests and the predictive value of the reference measurements. Results are compared with crosshole sonic logging measurements at the same location.