Building method of rock-soil deformation position distribution measuring model on basis of parallel spiral transmission line
A technology of parallel helix and establishing method, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problems such as no public deformation position testing method and inability to determine the specific position of the deformation, etc.
Inactive Publication Date: 2016-12-07
CHINA JILIANG UNIV
View PDF3 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This technology arranges multiple sensors into a network to measure the deformation of rock and soil, and the measurement accuracy of the deformation can reach 0.1mm, but the specific location of the deformation cannot be determined.
[0004] CN102522148A discloses a parallel helical transmission line sensor. There are two mutually insulated cable wires tightly wound around a round-section silicon rubber strip. Rubber sleeve, one end of the two cables is connected to the matching impedance ZL, and the other end of the two cables is connected to the time domain reflection measuring instrument, but the specific deformation position test method is not disclosed
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] Such as figure 1 and figure 2 As shown, the parallel spiral transmission line 6 includes a cylindrical elastic insulator 3 , the surface of the elastic insulator 3 is parallel to the spirally wound signal transmission lines 1 and 2 , and an insulating sleeve 4 is provided on the outside. The signal transmission lines 1 and 2 are insulated from each other, enameled wires can be used, and the diameter of the signal transmission lines 1 and 2 is about 0.25 mm. The elastic insulator 3 and the insulating sleeve 4 are made of silica gel, and the diameters of the elastic insulator 3 and the insulating sleeve 4 are 3.5mm and 5.5mm respectively.
[0027] Such as figure 2 As shown, the parallel helical transmission line is locally stretched, and deformation occurs at stretching position 7. One end of the signal transmission lines 1 and 2 is suspended, and the other end is connected to the time domain reflectometry device 5 . The time domain reflection measurement device is ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a building method of a rock-soil deformation position distribution measuring model on the basis of a parallel spiral transmission line. The method includes the steps that firstly, the parallel spiral transmission line is evenly divided into multiple sections, each section is stretched, and a reflection voltage signal is obtained through acquisition by means of a time domain reflection measuring device; secondly, the reflection voltage signal is preprocessed; thirdly, feature extraction is conducted on the reflection voltage signal preprocessed in the second step to obtain a feature vector; fourthly, the feature vector serves as input layer data, the stretching position serves as output layer data, and a least square-support vector machine model is built. When the parallel spiral transmission line deforms, impedance correspondingly changes, a pulse signal is input from one end of the parallel spiral transmission line, the reflection voltage signal is detected, and because the reflection voltage information includes position information, the least square-support vector machine model prediction model is built on the basis of the principle and used for accurately measuring the deformation position.
Description
technical field [0001] The invention relates to the technical field of rock-soil deformation testing, in particular to a method for establishing a rock-soil deformation position distribution measurement model based on parallel spiral transmission lines. Background technique [0002] my country is a country where geological disasters frequently occur, and frequent geological disasters have caused serious injuries and huge losses to the lives and properties of the people. Local rock-soil deformation caused by geological movements such as landslides and land subsidence is an important precursor to disasters. Accurately locating the location of rock-soil deformation is of great significance for the prevention and control of geological disasters in my country. [0003] Scholars at home and abroad have done a lot of work on monitoring the deformation position of rock and soil surfaces. The monitoring methods mainly include the following categories: (1) GPS technology and total sta...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
CPCG01B7/16
Inventor 贾生尧李青王燕杰
Owner CHINA JILIANG UNIV