A method for advanced forecasting of soil shield tunnel construction diseases

A technology of shield tunneling and advanced forecasting, which is applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as the application of static penetration testing equipment and the inability to automatically judge the distribution of soil layers, and achieve economical, accurate and efficient shield tunneling construction. Optimize and improve safety measures and reduce the effect of manual work

Active Publication Date: 2018-08-10
CHONGQING UNIV
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Problems solved by technology

However, after the static penetration testing data is obtained, it often needs to be brought back to the room for post-processing to obtain the distribution of the soil layer, and the automatic judgment of the distribution of the soil layer cannot be performed on site.
And the static penetrating sounding equipment commonly used in engineering has not been applied in shield tunneling construction

Method used

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  • A method for advanced forecasting of soil shield tunnel construction diseases
  • A method for advanced forecasting of soil shield tunnel construction diseases
  • A method for advanced forecasting of soil shield tunnel construction diseases

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Embodiment Construction

[0028] As shown in Figure 1 (a), the end face of the front shield 11 of the shield body is equipped with a cutter head 5, and the center of the cutter head 5 is a rotating shaft. On the side of the front shield 11 of the shield body, a probe rod fixing device 4 is arranged, that is, the tail ends of the surrounding probe rods 2 are fixed on the probe rod fixing device 4 . Pass the tail end of the central probe 1 through the center of the cutterhead 5 and fix it to the center of the front shield 11 of the shield body; in the above process, after the central probe 1 and the surrounding probes 2 are installed, the cutterhead 5 can still rotate freely.

[0029] The leading probe 3 is installed on the top of the probe rods (central probe rod 1 and surrounding probe rod 2). At this point, the side view is shown in Figure 1(b).

[0030] Such as image 3 As shown, the head end of the leading probe 3 is a tip, and the tail end has an axial central hole (blind hole). The structure of...

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Abstract

The invention discloses an advanced forecasting method of soil shield tunnel construction disasters. An advanced detecting device is arranged in front of a shield tunneling machine; lateral resistance, end resistance and porewater pressure of a soil layer can be detected by using an advanced probe to determine the property of the soil layer, then the soil layer property determining result is conveyed in a shield tunnel construction control center, a soil layer distribution and property three-dimensional model is formed, and a soil layer distribution and property prediction three-dimensional model corrected continuously within a larger range is automatically generated, so that the front soil body engineering property is judged, the construction scheme is corrected in time, safety measures are taken, the construction cost is reduced, the construction quality is ensured, and major safety accidents are avoided. Through the advanced forecasting method, the construction environment can be predicted, the construction scheme is optimized, safety measures are taken, the advanced forecasting method is safe and convenient, can be suitable for different properties of soil layers, and is economic and accurate in shield tunneling construction, and the material is saved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering construction, and in particular relates to a method for advanced forecasting of soil shield tunnel construction diseases. Background technique [0002] The shield is a fully enclosed tunnel boring machine (a construction tool that can support the pressure of the stratum and excavate in the stratum). The lining segments provide counterforce and can excavate continuously. While keeping the excavation surface and the surrounding soil stable, tunnel excavation and excavation were carried out, segments were assembled in the shield tail to form a lining, grouting was performed in time, and the tunnel was built without disturbing the soil as much as possible. There are three main points in the shield construction method: the stability of the excavation surface, the high-precision advancement of the shield along the design route (shield posture, tunnel direction), and lining operations. Althoug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08E21D9/093E21F17/18
Inventor 丁选明刘汉龙徐来李平
Owner CHONGQING UNIV
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