Method for identifying and determining stratum characteristics by using shield real-time tunneling parameters

A technology of tunneling parameters and strata, which is applied in earth cube drilling, special data processing applications, mining equipment, etc., can solve the problem that the stratum type in front of shield tunneling cannot be determined in real time, and achieve the effect of reducing ground uplift or subsidence

Pending Publication Date: 2021-06-15
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE +1
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Problems solved by technology

However, this method can only be used to determine the boulders in the formation ahead of the shield machine, and cannot determine the type of formation ahead of the shield tunneling in real time

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  • Method for identifying and determining stratum characteristics by using shield real-time tunneling parameters
  • Method for identifying and determining stratum characteristics by using shield real-time tunneling parameters
  • Method for identifying and determining stratum characteristics by using shield real-time tunneling parameters

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] An embodiment of the present invention provides a method for identifying and determining formation characteristics by using shield tunneling parameters in real time, and the method is performed through the following steps.

[0044] Step 1: Collect geological survey report data and determine pre-classified strata types.

[0045] (1) The geological survey report mentioned above is a summary report on the engineering geological conditions and hydrological conditions of the shield tunneling construction interval issued by the geological survey unit.

[0046] In a preferred embodiment, the shield tunneling method construction interval refers to the range of starting mileage and cut-off mileage designed by the design unit as stipulated in the contract.

[0047] ...

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Abstract

The embodiment of the invention discloses a method for identifying and determining stratum characteristics by using shield real-time tunneling parameters. The method comprises the steps of 1, collecting an investigation report before shield tunnel construction, and carrying out the pre-classification of stratum conditions, and meanwhile, carrying out blank value and abnormal value removal processing, smoothness processing, FPI and TPI index secondary conversion and standardization processing on the parameters collected by a shield tunneling machine in real time; 2, drawing the processed indexes into a two-dimensional plane graph, judging whether a new stratum type is generated or not, and updating the number of the stratum types to be K; and 3, standardizing parameters, inputting the standardized parameters into a K-Means algorithm, selecting K clustering centers, dividing the stratum types according to a shortest distance method, recalculating the position of a center point of the divided type, calculating a square error and enabling the square error to be minimum, and finally outputting the stratum type determined by the corresponding parameters. According to the method, the stratum types penetrated by the shield tunneling machine can be effectively determined, the tunneling parameter setting of the shield tunneling machine is guided, and the shield tunneling safety is improved.

Description

technical field [0001] The invention relates to the technical field of geological survey, in particular to a method for identifying and determining stratum characteristics by using shield tunneling parameters in real time. Background technique [0002] With the acceleration of urbanization in our country, the urban rail transit system continues to develop, and the safe and efficient shield method tunnel construction technology has been widely used in the construction of urban subways. At present, shield tunneling method construction relies on manually setting shield tunneling parameters according to stratum conditions. The soil parameters are mainly obtained from the geological survey report. However, the soil parameters at the soil borrow hole can only be obtained through the test of the soil taken from the geological survey hole, and the stratum characteristics within the shield excavation range cannot be obtained. During the shield tunneling process, the shield tunneling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/00E21F17/00E21F17/18G06F30/20
CPCE21D9/003E21D9/06E21F17/18E21F17/00G06F30/20
Inventor 曾毅沈水龙闫涛熊旺张小龙魏坤安王志欣吕琦余征毅郭明耀包健
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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