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Stress estimation method for carbon rock tunnel anchor rods based on feedback algorithm transfer function

A transfer function and feedback algorithm technology, applied in the installation of bolts, neural learning methods, earthwork drilling and mining, etc., can solve the problems of material waste, cost, unreasonable, etc., and achieve broad application prospects, resource saving, high efficiency and accurate estimation Effect

Active Publication Date: 2020-07-03
GUANGXI COMM PLANNING SURVEYING & DESIGNING INST
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Problems solved by technology

Anchor parameters are sometimes unreasonable based on the results of these methods, resulting in wasted material and increased costs

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  • Stress estimation method for carbon rock tunnel anchor rods based on feedback algorithm transfer function
  • Stress estimation method for carbon rock tunnel anchor rods based on feedback algorithm transfer function
  • Stress estimation method for carbon rock tunnel anchor rods based on feedback algorithm transfer function

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0040] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a stress estimation method for carbon rock tunnel anchor rods based on a feedback algorithm transfer function. The stress estimation method comprises the steps of 1, selectingmonitoring sections of a tunnel; 2, arranging monitoring equipment; 3, collecting monitoring data; 4, establishing an artificial neural network model; 5, training the artificial neural network model;6, estimating and predicting the stress of the anchor rods; and 7, selecting the diameter of the anchor rods according to the grade of surrounding rock. According to the stress estimation method, thestress of the anchor rods is estimated by using a feedback artificial neural network analysis method with three parameters of the surrounding rock pressure, the seepage pressure and the surrounding rock deformation, and the tunnel anchor rods are designed according to the stress of the anchor rods, so that the problem of resource waste caused by the fact that the anchor rods are designed by relying on a similar engineering method or a semi-empirical and semi-theoretical method is solved; and due to the fact that the accuracy of the feedback artificial neural network analysis method for estimating the stress of the anchor rods is high, resources are saved during the design of the tunnel anchor rods, the concept of sustainable development is met, and the stress estimation method has wide application prospects.

Description

technical field [0001] The invention relates to the field of tunnel engineering monitoring, in particular to a method for estimating the bolt stress of a carbonaceous rock tunnel based on a transfer function of a feedback algorithm. Background technique [0002] With the vigorous development of my country's infrastructure, a large number of expressways and high-speed railways have been newly built. China is a mountainous country. Many tunnels will be built when constructing expressways and high-speed railways. When the tunnels are in danger of collapsing, reasonable support should be taken. protective measures are necessary. [0003] "Carbonaceous rock" is a kind of special rock that is easy to weather in the open air, easy to soften after absorbing water, easy to disintegrate and break when exposed to water after being disturbed, and its engineering properties are greatly affected by the environment. "Carbonaceous rock" is widely distributed throughout the country, such as ...

Claims

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Application Information

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IPC IPC(8): E21D21/02E21F17/18G06N3/08
CPCE21D21/02E21F17/18G06N3/08
Inventor 骆俊晖周善雄米德才徐龙旺叶琼瑶邓胜强张涛王才进
Owner GUANGXI COMM PLANNING SURVEYING & DESIGNING INST
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