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In-situ test device for tunnel temperature adjustment ring and in-situ test method thereof

A technology of in-situ testing and temperature-regulating rings, which is applied to measuring devices, applications of thermometers, and parts of thermometers. The effect obtained

Pending Publication Date: 2019-03-08
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research energy of domestic scholars on tunnels is mainly concentrated on the safety of tunnel lining structure and tunnel ventilation and cooling, lack of research on the change of surrounding rock temperature field, resulting in heat calculation of ventilation design and load calculation in safety research of lining structure Without consideration of this factor, the effect is not ideal

Method used

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  • In-situ test device for tunnel temperature adjustment ring and in-situ test method thereof
  • In-situ test device for tunnel temperature adjustment ring and in-situ test method thereof
  • In-situ test device for tunnel temperature adjustment ring and in-situ test method thereof

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Embodiment

[0051] Before the excavation of the tunnel, the surrounding rock is in a state of thermal balance. During the excavation of the tunnel, the face is formed, and the tunnel is ventilated to form an air flow, which leads to the imbalance of the original heat balance. It is necessary to re-establish a new heat balance. It is located near the face of the tunnel. The temperature of the surrounding rock continues to drop, and the cooling of the rock mass extends from the palm to the deep part of the rock mass until a new thermal balance is established.

[0052] The inventor found that at a certain distance from the face of the rock, the internal temperature of the rock mass has basically no change with the original temperature, and within this distance range is the temperature adjustment circle, that is to say, the temperature of the surrounding rock at a certain depth is not affected by the original temperature. Influenced by ventilation conditions, the original temperature is still ...

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Abstract

The invention discloses an in-situ test device for a tunnel temperature adjustment ring and an in-situ test method thereof. The in-situ test method includes the following steps: drilling a surroundingrock to form a drill hole with a preset depth and a preset aperture; clearing the broken rocks in the drill hole and diverting the high rock temperature water in the drill hole; installing a temperature sensor on a probe rod and stretching the probe rod into the drill hole; installing a grouting pipe and an exhaust pipe into the drill hole to seal the orifice of the drill hole; grouting the grouting pipe until filling the drill hole, the grouting pipe and the exhaust pipe with grout; and obtaining the initial reading of the temperature sensor, and collecting the temperature sensor data afterthe blasting is completed. The in-situ test method can reflect the surrounding rock temperature in the real situation, can accurately acquire the range and the variation rules of the surrounding rocktemperature adjustment ring, and can provide preferable data support for calculation of the heat in the ventilation design and calculation of the load in the safety study of the lining structure.

Description

technical field [0001] The invention relates to the field of tunnels, in particular to an in-situ testing device and an in-situ testing method for a temperature-regulating coil of a tunnel. Background technique [0002] In recent years, a large number of high-altitude, long-distance, and complex geological conditions tunnels have appeared in Southwest my country. Among them, the poor construction environment caused by the ground temperature, the insufficient pull-out resistance of the anchor bolt, and the reduced safety of the secondary lining structure cannot be ignored. At present, the research energy of domestic scholars on tunnels is mainly concentrated on the safety of tunnel lining structure and tunnel ventilation and cooling, lack of research on the change of surrounding rock temperature field, resulting in heat calculation of ventilation design and load calculation in safety research of lining structure Without the consideration of this factor, the effect is not ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/00G01K1/14E21B33/13
CPCE21B33/13G01K1/14G01K13/00
Inventor 王明年胡云鹏王奇灵王翊丞童建军刘大刚于丽
Owner SOUTHWEST JIAOTONG UNIV
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