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Water 2018, 10(9), 1211; https://doi.org/10.3390/w10091211

Experimental Study of Influence of Karst Aquifer on the Law of Water Inrush in Tunnels

1
Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China
2
School of Qilu Transportation, Shandong University, Jinan 250061, China
3
State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, China
4
School of Software, Shandong University, Jinan 250101, China
*
Author to whom correspondence should be addressed.
Received: 1 August 2018 / Revised: 31 August 2018 / Accepted: 5 September 2018 / Published: 7 September 2018
(This article belongs to the Special Issue Hydraulic Behavior of Karst Aquifers)
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Abstract

Water inrush is a geological hazard often encountered in tunnel construction. In order to overcome problems encountered when using the existing water-inrush simulation model test, such as single function, low repetition utilization rate, and poor visibility, we developed a multi-type water-inrush model test system. Our test system can be a precursor to large-scale studies, handle multiple types, and perform serialization and visualization. We conducted cavity water-inrush simulation testing using this device, and studied the failure model of aquifuge rock. We reveal the evolution laws of water inrush from the cavity, including the initiation of fracture in the aquifuge rock, the formation of water-inrush channels, and the rupture of the aquifuge rock. By analyzing the seepage pressure changes at the monitoring points of the aquifuge rock, we divided the water-inrush process of the cave into a rack generation stage, a holing-through of fracture and forming of water-inrush channel stage, and a water-inrush stage. Test results show that the system is stable and reliable, only requiring a short test period, and can be used to guide large water-inrush testing and related projects. View Full-Text
Keywords: karst aquifer; water inrush; hydraulic; model test; evolution law karst aquifer; water inrush; hydraulic; model test; evolution law
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yang, W.; Fang, Z.; Yang, X.; Shi, S.; Wang, J.; Wang, H.; Bu, L.; Li, L.; Zhou, Z.; Li, X. Experimental Study of Influence of Karst Aquifer on the Law of Water Inrush in Tunnels. Water 2018, 10, 1211.

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