A Simulation Construction Method of Mine Tunnel Considering the Effect of Red Clay Unloading

A construction method and technology of red clay, which are applied in tunnels, earthwork drilling, tunnel lining, etc., can solve the problems of less impact on the results of tunnel engineering.

Active Publication Date: 2022-03-25
WUHAN MUNICIPAL CONSTR GROUP +2
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Problems solved by technology

However, at present, there are few achievements in observing the expansion and contraction of red clay during the decompression process after the expansion and contraction of red clay are stabilized under the inherent pressure.
Similarly, at the present stage, for the numerical simulation research of actual tunnel engineering under the condition of soil expansion and contraction, the temperature field is mostly used to simulate the seepage field, and the damage of the tunnel lining of the expansive soil under the condition of humidification is considered. The impact of engineering is less

Method used

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  • A Simulation Construction Method of Mine Tunnel Considering the Effect of Red Clay Unloading
  • A Simulation Construction Method of Mine Tunnel Considering the Effect of Red Clay Unloading
  • A Simulation Construction Method of Mine Tunnel Considering the Effect of Red Clay Unloading

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Embodiment

[0028] Example: The survey data of a domestic double-side-wall pilot pit tunnel shows that the tunnel is covered with a certain depth of red clay body, which may cause unfavorable phenomena such as uneven deformation of the tunnel due to unloading of the soil during the later construction process. A mining tunnel simulation construction method considering the influence of red clay unloading, specifically comprising the following steps:

[0029] Step 1: Construct a soil model for constructing a double-side pilot tunnel, set the groundwater level, and import relevant parameters of the soil into the corresponding soil layers.

[0030] Set the geometry of the soil model in Plaxis software, create boreholes, combine engineering design data, add soil layers to the model in sequence, set the groundwater level, and then set soil layer-related parameters and add them to the corresponding soil layers.

[0031] In this example, if image 3 As shown, the soil layers of the soil model are...

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Abstract

The invention discloses a mining tunnel simulation construction method considering the influence of red clay unloading. Generate a tunnel model and determine the range of the unloading affected area; mesh the model; simulate the construction in the soil model according to the tunnel structure, excavate the soil to complete the tunnel construction; monitor the redness of the lower part of the tunnel in real time during the excavation of the soil The force change of clay; calculation of red clay unloading swelling rate caused by tunnel excavation; analysis of the influence of red clay unloading expansion on tunnel structure and surface environment around tunnel during tunnel excavation. The beneficial effects of the present invention are: the present invention can simulate the interaction between the soil body and the structure more reliably, provides a reference for tunnel excavation construction in red clay areas, and facilitates the follow-up of subsequent treatment measures.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a mine method tunnel simulation construction method considering the influence of red clay unloading. [0002] technical background [0003] The characteristics of urban underground engineering construction are complex geological conditions, dense underground pipe network, numerous buildings on the ground, significant adjacent disturbance, complex underground engineering construction technology, long cycle, large investment, many unforeseen risk factors, and great impact on the social environment. Unavoidable high-risk construction projects. The urban underground pipe network is an "invisible" world, which is closely related to the lives of citizens. It is an important network that citizens can feel personally, and it is the bones and blood vessels of modern cities. [0004] Red clay is a kind of brownish-red or brownish-yellow special soil that generally covers t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/00G06F30/20G06Q50/02
CPCE21D9/00E21D11/00G06F30/20G06Q50/02
Inventor 朱红西柯文汇陈健卢渊余焰春周心阳胡秉洁吴吉武于永龙蔡大鹏余阳涂东东李领刘明宝卢吉
Owner WUHAN MUNICIPAL CONSTR GROUP
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