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

Method for evaluating water-resisting property indexes of Middle Ordovician limestone ancient weathering crust

An evaluation method and technology of weathering crust, applied in geophysical measurement, instrumentation, etc.

Active Publication Date: 2014-08-13
CHINA UNIV OF MINING & TECH (BEIJING)
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failed to fully analyze and exploit the natural water-proof performance of the ancient weathering crust on the top of the Austrian ash

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
  • Method for evaluating water-resisting property indexes of Middle Ordovician limestone ancient weathering crust
  • Method for evaluating water-resisting property indexes of Middle Ordovician limestone ancient weathering crust
  • Method for evaluating water-resisting property indexes of Middle Ordovician limestone ancient weathering crust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The present invention will be described in detail below in conjunction with the accompanying drawings, taking a certain coal mine as an example.

[0054] The scope of this research is a certain five mining areas. The lithology of the paleo-weathering crust at the top of the Austrian limestone is mainly limestone, which is dense and hard, with a small number of karst fissures locally developed, and most of the dissolution pores and fissures are filled, and the filling materials are mainly carbonate weathering products, calcite veins, mudstone, etc. Therefore, the paleo-weathered crust on the top of the Austrian ash has weak water-richness and low water permeability.

[0055] 1. Determine and describe the water-proof performance indicators;

[0056] Due to the limitations of the geological exploration degree and other conditions in the study area, the indicators determined this time to describe the water-proof performance of the ancient weathering crust of Ordos ash main...

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

No PUM Login to View More

Abstract

The invention provides a method for evaluating the water-resisting property indexes of a Middle Ordovician limestone ancient weathering crust. According to the technical scheme, the method is characterized by including the following steps that firstly, it is determined that water-resisting property indexes are depicted; secondly, thematic maps of the water-resisting property indexes are established; thirdly, weight coefficients of the indexes are determined based on the information fusion technology; fourthly, the thematic maps of the water-resisting property indexes are overlapped; fifthly, a water-resisting property evaluation model is established; sixthly, the water-resisting property is divided and evaluated. A mine lot is divided into five sub lots, a weak water-resisting property lot, a weaker water-resisting property lot, a transition water-resisting property lot, a stronger water-resisting property lot and a strong water-resisting property lot. The method for evaluating the water-resisting property indexes of the Middle Ordovician limestone ancient weathering crust is provided for the first time, and the water inrush evaluation and prediction defects that in the mining practice, the water inrush phenomenon never occurs on many water inrush points with the values far larger than a critical value in the seam floor water inrush evaluation process are overcome.

Description

technical field [0001] The invention relates to a method for evaluating the water-repellent performance of a coal seam floor, in particular to a water-repellent index evaluation method for a coal seam floor whose floor is Middle Ordovician limestone paleo-weathering crust. Background technique [0002] With the further increase of coal resources development intensity, coal resources in the shallow and upper formations of North China type coalfields are becoming increasingly scarce, and the development of deep and lower formations of coal resources has become an inevitable trend. Water hazards affecting and controlling the development of this trend In addition to the water seepage disasters in the shallow and upper coal accumulation goafs, the coal seam floor water inrush disasters are the primary problem. Due to the short distance between the lower group of coal and the Middle Ordovician limestone (partially Cambrian) on the floor, the Ordovician lime aquifer has high water ...

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 Applications(China)
IPC IPC(8): G01V9/00
Inventor 武强刘守强曾一凡
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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