Method for predicting ground subsidence in underground metro construction process

A prediction method and land subsidence technology, applied in the field of neural network prediction of land subsidence, can solve problems such as tunnel damage, ground subsidence, underground pipeline damage, etc., and achieve high precision and timely prediction results

Inactive Publication Date: 2014-05-21
LIAONING TECHNICAL UNIVERSITY
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  • Claims
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AI Technical Summary

Problems solved by technology

When ground movement and surface deformation exceed a certain limit, accidents such as ground subsidence, foundation pit collapse, tunnel damage, surrounding building damage, and underground pipeline damage will occur, thereby affecting the normal use and safe operation of tunnels and surface buildings, and even Accidents causing personal injury and property damage

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  • Method for predicting ground subsidence in underground metro construction process
  • Method for predicting ground subsidence in underground metro construction process
  • Method for predicting ground subsidence in underground metro construction process

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Embodiment Construction

[0032] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in combination with relevant theories and specific implementation methods used.

[0033] The embodiment selects the project under construction. The 201 bid section of the Dalian Metro is the section project from Xi'an Road Station to Jiaotong University Station. The starting and ending mileage of the tunnel in this section is DK16+787.331~CK18+443.793, with a total length of 1656.462 meters. The shield tunneling method is used for construction. After exiting Xi’an Road Station, the plane line of the section goes south along the north-south direction, turns to the east-west direction through a curve with a radius of 300m, and then connects to Huanghe Road through a curve with a radius of 450m, and arrives at Jiaotong University Station. The layout of section longitudinal sections is in a "V" s...

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Abstract

The invention discloses a method for predicting ground subsidence caused by metro construction based on neural network horizontal comparison. The method is characterized in that the relation between a horizontal distance from a tunneling face to a ground monitoring point and the ground subsidence at the position of the ground monitoring point is researched. A neural network is applied, rock and soil mechanical parameters of existing tunnels are used as input values, and the ground subsidence amount at the position of the ground monitoring point serves as an output value for training when being located at different positions of the horizontal distance from the tunneling face to the ground monitoring point. A trained network is used for analyzing others, namely the ground subsidence situation above the constructed tunnels. The method mainly comprises the steps of relevant data preparation, process simulation and result prediction and accuracy testing. By adopting the method, the ground subsidence amount at the position of the ground monitoring point can be effectively predicted according to the rock and soil mechanical parameters of the existing tunnels. The method can be widely applied to the construction process, and a measurement basis can be provided for ground building safety and abnormal subsidence prevention.

Description

technical field [0001] The invention relates to the research on settlement deformation in civil engineering, in particular to a neural network prediction method for ground settlement caused during tunnel construction. Background technique [0002] In recent years, with the development of urban construction in our country, urban underground projects have developed rapidly, mainly including underground railways, street crossings, various municipal underground projects and civil air defense facilities. Underground engineering construction may cause stratum movement and lead to different degrees of settlement and displacement. Due to the complexity of construction technology, surrounding environment and rock-soil medium, even if the most advanced construction methods are used, the stratum movement caused by construction cannot be completely eliminated. . When ground movement and surface deformation exceed a certain limit, accidents such as ground subsidence, foundation pit coll...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N3/08
Inventor 戴成元刘露
Owner LIAONING TECHNICAL UNIVERSITY
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