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A method and a system for automatically identifying surrounding rock levels by applying while-drilling parameters

A technology of surrounding rock grades and parameters, applied in special data processing applications, electronic digital data processing, unstructured text data retrieval, etc., can solve problems such as greater influence of classification standards and no clear boundaries of surrounding rocks at all levels, and achieve High work efficiency, high precision and easy to use

Active Publication Date: 2019-04-16
CHINA RAILWAY CONSTR HEAVY IND
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Problems solved by technology

For the classification of tunnel surrounding rocks, although the relevant calculation methods for tunnel surrounding rocks are given in domestic and foreign standards, at present, no accurate mathematical model has been established for the various indicators of surrounding rock classification and the surrounding rock grades, and there is no clear definition of the surrounding rocks at all levels. boundary, so for the classification of tunnel surrounding rock, its classification standard is more affected by subjective factors

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  • A method and a system for automatically identifying surrounding rock levels by applying while-drilling parameters
  • A method and a system for automatically identifying surrounding rock levels by applying while-drilling parameters
  • A method and a system for automatically identifying surrounding rock levels by applying while-drilling parameters

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[0024] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve corresponding technical effects in the present invention. The embodiments of the present application and the various features in the embodiments can be combined with each other under the premise of no conflict, and the formed technical solutions are all within the protection scope of the present invention.

[0025] Additionally, the steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0026] In the long-term research of human tunnel construc...

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Abstract

The invention discloses a method and a system for identifying a surrounding rock level by applying while-drilling parameters. The method comprises the following steps of: preprocessing a data set of the acquired while-drilling parameters; Analyzing the preprocessed data set of the parameters while drilling; determining the contribution rate of each variable in the parameters while drilling by applying different data dimension reduction methods; using an ordered weighted average operator method to carry out weighted average calculation on the calculated contribution rates, carrying out sortingand preferential selection according to the contribution rates obtained after calculation and carrying out combination, determining main characteristic variables of the while-drilling parameters, andon the basis, sample sets of the main characteristic parameters are classified; The established neural network and expert knowledge system is applied to train main characteristic parameters of different classifications, stable weight coefficients and thresholds are obtained, and surrounding rock recognition verification is carried out on the established neural network mathematical model by applying sample data. According to the invention, a machine automatic identification scheme which is higher in working efficiency, more convenient to use and higher in precision can be realized.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a method and a system for automatically identifying the grade of surrounding rock by applying parameters while drilling. Background technique [0002] A tunnel is a cavern structure system built in a variety of surrounding rock media with certain stress history and structural signs. Tunnel surrounding rock refers to the rock and soil mass that affects the stability of the tunnel within a certain range around the tunnel. The formation, whether it is rock mass or soil mass, is collectively referred to as the tunnel surrounding rock. In order to meet the needs of tunnel construction, according to the stability of the surrounding rock, the comprehensive rock index is used to divide the surrounding rock into different grades, that is, the surrounding rock classification. The correct evaluation of the surrounding rock level of the tunnel is not only related to the design, construc...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F16/35
CPCG06F30/20
Inventor 刘飞香郑大桥廖金军杜义康易达云肖正航蒋海华杜洋伍容
Owner CHINA RAILWAY CONSTR HEAVY IND
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