Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A distributed testing method for temperature field of water inrush from the floor of working face

A test method and temperature field technology, applied in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve the problems of limiting the practical application of sensors, difficulty in predicting water inrush from the bottom plate, and high transmission costs

Inactive Publication Date: 2017-12-08
HUAINAN MINING IND GRP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, electromagnetic sensors work in the environment of flammable and explosive coal mines and strong electromagnetic interference, showing poor anti-interference ability, and because the long-distance transmission of electrical signals is inconvenient, it is necessary to add many secondary instruments, repeaters and power supplies underground and other equipment, the transmission cost is high, and the reliability is poor
There are also certain uncontrollable factors in manual observation, which seriously limits the practical application of this type of sensor
However, due to the many factors affecting the floor water inrush, the technical method has certain limitations in practical application, which brings certain difficulties to the prediction of the floor water inrush.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A distributed testing method for temperature field of water inrush from the floor of working face
  • A distributed testing method for temperature field of water inrush from the floor of working face
  • A distributed testing method for temperature field of water inrush from the floor of working face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Construct the simulation experiment environment: the similar simulation experiment of floor water inrush is based on the relevant data of the mine, after reasonable simplification, a plane stress model with a length, width and height of 0.4m is built at a ratio of 1:100, combined with the research results of the simulation material ratio experiment, Determine the proportioning scheme of model materials and use the formula:

[0028] G=lbhγ m

[0029] In the formula, G—the total weight of model layered materials (excluding water content); l—the length of the model; b—the width of the model; h—the height of each layer of the simulated rock formation; m —Simulate the bulk density of each layer of the rock formation.

[0030] The calculation of the amount of each layered material is as follows:

[0031]

[0032] Each lithology layer in the model is made of sand, gypsum, lime, cement, etc. in different proportions, adding an appropriate amount of water layers to lay and...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the detection technology of the temperature field of the floor water inrush, in particular to a distributed test method for the temperature field of the floor water inrush of the working face, comprising the following steps: constructing a spiral temperature measurement system of the floor temperature field; collecting data of the floor temperature field; Analysis of change data; evaluation of change characteristics of base plate temperature field. The invention effectively increases the number of sensing data points within the test distribution point distance through the spiral winding method, which can significantly improve the measurement accuracy compared with the same linear arrangement type; the grouting method can make better coupling; distributed The temperature-sensing optical fiber is plugged in through a cold connector, which is more conducive to the installation in the actual test; the present invention can obtain real-time dynamic information on the rise of limestone water caused by the deformation of the bottom plate, and set up a refined evaluation system according to the hydrogeology of the mine. During the data collection process It can achieve good contrast and more intuitively test the abnormal change of the temperature field of the bottom plate.

Description

technical field [0001] The invention relates to the detection technology of the water inrush temperature field of the floor, in particular to a distributed test method for the water inrush temperature field of the floor of the working face. Background technique [0002] There are many potential safety hazards affecting production in coal mining face excavation, mainly including floor water inrush and gas outburst. With the intensification of mining efforts, the damage to the coal seam floor by the high pressure water of Austrian ash is also intensified. Moreover, during the mining process of the working face, due to the mining of the coal seam, the underlying floor is disturbed and deformed and damaged by the migration of the stress field. . Its water inrush problem also has obvious hidden, sudden and catastrophic characteristics. [0003] At present, scholars at home and abroad have done a lot of research and testing on the mechanism of floor water inrush, designed and a...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32G01K11/322
Inventor 张平松许时昂孙斌杨
Owner HUAINAN MINING IND GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com