Deicing grouting crack arrest system and method of tunnel surrounding rock in seasonal frozen region

Abstract

The invention discloses a deicing grouting crack arrest system of a tunnel surrounding rock in seasonal frozen region and a deicing grouting crack arrest method. The deicing grouting crack arrest system comprises a deicing device, a hole sealing device, a grouting device and a control device, wherein the control device comprises a displayer and a circuit board; the deicing device comprises an airblasting powder sprayer, a flexible detecting steel pipe, a flexible steel pipe, a wireless sound wave emitter, a wireless sound wave receiver, and a wireless device controller; the hole sealing device comprises two hole sealing units in parallel, and every hole sealing unit comprises a blocking air sac located in a hole end of the tunnel surrounding rock drill hole; the blocking air sac is sleeved on the outer pipe of the flexible detecting steel pipe, and the outside of the hole end of the tunnel surrounding rock drill hole is provided with a blocking steel plate for fixing a second water filling pipe; the grouting device comprises an automatic stirring tank and a grout pumping automatic control pump. The system can avoid poor grouting and blocking effect of deep surrounding rock crack in the crack arrest process; the applicability and safety are stronger.

Description

technical field [0001] The invention belongs to the technical field of deicing and grouting of surrounding rock cracks in tunnel engineering, and relates to a system and method for deicing and grouting of surrounding rock cracks in seasonally frozen regions. Background technique [0002] Concrete cracking during tunnel construction is a common problem in underground engineering, which has a great impact on construction quality and progress. On the one hand, during the construction process, cracks appeared due to the poor quality of concrete and improper use of construction personnel; on the other hand, construction personnel did not pay attention to the specific strength level of concrete during work, resulting in excessive exposure of concrete to the outside. Failure to strictly follow the standards for preparation, excessive or insufficient watering force, and lack of post-maintenance lead to cracks. [0003] With the development of underground engineering, there are many...

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Problems solved by technology

[0004] In order to solve the engineering problems caused by the surplus of ice blocks in the surrounding rock cracks of tunnels in seasonally frozen regions and the inability to perform effective grouting and sealing, the present invention provides a system and method for deicing and grouting cracks in surrounding rocks of tunnels in seasonally frozen regions. This system can avoid the phenomenon that the grouting sealing effect of deep surrounding rock cracks is not good during the crack arrest process, and the applicability and safety are stronger

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