A Prediction Method of Raw Rock Temperature in High Geothermal Tunnel Without Excavation

A prediction method and high ground temperature technology, applied in prediction, data processing applications, instruments, etc., can solve the problems that affect the tunnel construction period and cannot accurately reflect the original surrounding rock temperature, so as to ensure safe and fast construction, scientific and safe construction, Wide range of effects

Active Publication Date: 2021-09-07
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Problems solved by technology

Due to the limitation of the number of boreholes and the influence of surface valleys and peaks, the original surrounding rock temperature of the high-temperature tunnel under the condition of no excavation predicted by the direct connection has obvious particularity, and cannot accurately reflect the original surrounding rock temperature within the corresponding range of the tunnel. rock temperature
Especially after the excavation of the tunnel was revealed, the inaccurate prediction of the original rock temperature caused the high temperature heat damage in the tunnel, and it was necessary to stop work and take measures to deal with the heat damage, which affected the construction period of the tunnel

Method used

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Embodiment Construction

[0022] The invention is a method for predicting the original rock temperature of a high ground temperature tunnel under the condition of no excavation. Formula 1 and Formula 2 of the present invention have been developed through years of practice and have been verified to be reliable and accurate by the construction of the Gaoligongshan Tunnel. Formula 2 is the mathematical model formula established by comparing and adjusting the construction drawings of the X system and the high ground temperature tunnel with extremely small errors. Formula 1 and Equation 2 were entered into a computer calculation program.

[0023] H in formula 1 i 、α i and T i is a variable parameter, and T 恒 and H 恒 It can be detected by the X system. In addition, the X system can also obtain the T corresponding to the sampling interval Jm of each drilling point in the range of Lkm of the high geothermal tunnel in formula 2. 0 , α', L, a, h(t), a group of topographic parameters of z and D and k, t geol...

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Abstract

The invention provides a method for predicting the original rock temperature of high geothermal tunnels without excavation. The prediction method utilizes the heat conduction effect of different elevations and different surface temperatures formed by geological evolution, the geothermal gradient of stratum rocks, and the temperature difference of rock masses at different points. , with the help of two self-developed formulas, the original rock temperature of each measuring point within the corresponding range of the high-geothermal tunnel can be calculated relatively accurately, which solves the problem of inaccurate prediction by previous methods, and the thermal damage prevention and control can be taken in advance through the original rock temperature distribution map The measures meet the labor hygiene requirements of the operators, provide technical support for the heat damage control and scientific construction of high-ground temperature tunnels, and ensure the safe and rapid construction of high-ground temperature tunnels.

Description

technical field [0001] The invention belongs to the technical field of tunnel original rock temperature prediction, and in particular relates to a method for predicting the original rock temperature of a high ground temperature tunnel without excavation. Background technique [0002] In the construction of high ground temperature tunnels, the high temperature heat damage in the tunnel not only deteriorates the working environment, reduces labor efficiency, but even endangers the health of workers and causes safety accidents. Therefore, it is necessary to determine the source and temperature of heat damage in the treatment of high-temperature heat damage in the tunnel, so that corresponding cooling measures can be taken during construction to ensure that the ambient temperature in the tunnel meets the operating standards required by the regulations, and lay the foundation for safe and rapid tunnel construction. [0003] The heat dissipation of surrounding rock is one of the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 罗占夫卓越刘永胜尹龙高广义张建设王卓冯晓燕王树刚翟康博司景钊何喜湘李治国杨立新刘建平宋法亮曹贵才张俊
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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