Field evaluation of permeability of concrete linings and rock masses around underground lined rock caverns by a novel in-situ measurement system
Field evaluation of permeability of concrete linings and rock masses around underground lined rock caverns by a novel in-situ measurement system
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DOI：
10.1016/j.enggeo.2012.03.013
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发表时间：
2012-06
影响因子：
7.4
通讯作者：
Hyung-mok Kim;Y. Lettry;Dohyun Park;D. Ryu;Byung-Hee Choi;W. Song
中科院分区：
文献类型：
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作者：
Hyung-mok Kim;Y. Lettry;Dohyun Park;D. Ryu;Byung-Hee Choi;W. Song
在本文中，我们介绍了一种新型的原位渗透率测量系统，并介绍了使用所开发的系统进行现场渗透率测试的结果。所开发的系统采用模块化结构设计和从低渗透率到高渗透率的宽测量范围，能够现场测量混凝土衬砌、施工缝和开挖岩洞周围岩体的渗透率。迄今为止，此类测量极其有限，但在评估地下储藏室的密封性能时基本上是必需的。介绍了地下压缩空气储能 (CAES) 试验工厂中混凝土块模型试验的实验结果以及混凝土衬砌和衬砌岩洞 (LRC) 周围开挖损坏区 (EDZ) 的现场渗透性测量结果。通过这些实验测量，我们可以验证所开发的系统对各种测量条件的有效适用性，从低渗透性混凝土衬砌基质到高渗透性施工缝和地下岩石储存洞穴周围的裂隙岩体。
In this paper, we introduce a novel in-situ permeability measurement system and present the results of field permeability testing using the developed system. Using a modular structural design and wide measurement range from low to high permeability, the developed system was capable of measuring in-situ scale permeabilities of concrete linings, construction joints and rock mass around excavated rock caverns. Such measurements have been extremely limited so far but are essentially required in estimating the sealing performance of underground storage caverns. The experimental results of a concrete block model test as well as field permeability measurements of concrete linings and the excavation damaged zone (EDZ) around a lined rock cavern (LRC) in a pilot plant for underground compressed air energy storage (CAES) were presented. From these experimental measurements, we could verify the effective applicability of the developed system to a wide range of measurement conditions, from the low permeability concrete lining matrix to the highly permeable construction joints and fractured rock masses around underground rock storage caverns.