Analogue experiment stand for interreaction of tunnel structure, surrounding rock and underground water

Abstract

The present invention discloses a simulation test table of tunnel structure, surrounding rock and underground water interaction, belonging to the field of underground engineering simulation test technology. Said test table is formed from the following four portions: (1), reaction frame; (2), hydraulic servo control loading system; (3), water pressure loading and sealing system; and (4), hydraulic loading and data acquisition computer control system.

Description

technical field [0001] The invention belongs to underground engineering simulation test technology, in particular to a simulation test bench for interaction among tunnel structure, surrounding rock and ground water. Background technique [0002] The indoor model test device for the interaction between the tunnel structure and the surrounding rock, whether it is planar or three-dimensional, is relatively mature at home and abroad, such as the relevant laboratories in the United States, Germany, Poland and other countries, as well as the domestic Ministry of Railways Research Institute, Transportation The Ministry of Chongqing Highway Research Institute, China University of Mining and Technology, the Third Research Institute of the General Staff Engineering Corps, Xi'an University of Science and Technology, Shandong University of Science and Technology and other units have relevant test equipment. However, these test equipment can only simulate the stress and deformation insid...

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Problems solved by technology

However, these test equipment can only simulate the stress and deformation inside the surrounding rock and the interaction law between the surrounding rock and the supporting structure during the excavation process of the tunnel, and cannot simulate the effect of underground pressure water. Water has certain difficulties. It is necessary to ensure that the simulated loading of formation pressure and water pressure are independent of each other, and that the entire test device is sealed, and that the loading plates in different directions do not interfere with each other. Compared with the case without water, the test It is more difficult, and the design of the experimental device is not good, and the expected effect may not be achieved. This is one of the reasons why researchers have wanted to do it for many years but have not done it.

In recent years, with the expansion of the scale and field of tunnel construction, more and more tunnels are built in a certain environment of underground pressure water. There are several riverbed and subsea tunnels under construction, but there is still a lack of design experience in building tunnels in pressurized water formations. Water inrush in tunnels under construction and water leakage in completed and operational tunnels occur from time to time. Therefore, the water problem is A topic worthy of research in this field

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