Method for detecting active diffusion radius of covered rock separation grouting filling slurry

A technology of diffusion radius and isolation grouting, which is applied in the fields of filling, measurement, earthwork drilling, etc., can solve problems such as unpublished detection methods, and achieve the effect of protecting safety and improving effectiveness.

Active Publication Date: 2015-07-08
CHINA UNIV OF MINING & TECH
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent No. ZL201210164930.1 discloses a double-hole staggered-layer drilling arrangement method for isolation and grouting filling of mining overlying rock, specifically related to the determination of the distance between adjacent drilling holes above the coal mini

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 detecting active diffusion radius of covered rock separation grouting filling slurry
  • Method for detecting active diffusion radius of covered rock separation grouting filling slurry

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1. Take a working face as an example:

[0029] 1. Arrange ground grouting holes.

[0030] a. The grouting borehole 1 is constructed on the surface 4 at the center of coal mining face 5 60m away from the cut hole in the direction of the coal seam. The group includes only 1 borehole, and the depth of the final borehole is 40 times the mining height above the coal seam, namely 120m.

[0031] b. Set the distance between the second group of grouting boreholes and grouting borehole 1 as L1, and set the horizontal distance between the main grouting borehole 3 and the auxiliary grouting borehole 2 as L2;

[0032] c. Construct auxiliary grouting borehole 2 at a distance of 100m from grouting borehole 1 on surface 4 to the direction of the coal seam, and construct main grouting borehole 3 at a horizontal distance of 50m between surface 4 and auxiliary grouting borehole 2 and final hole The depth is 30m below the final hole of auxiliary grouting borehole 2;

[0033] The auxiliary ...

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 discloses a method for detecting active diffusion radius of a covered rock separation grouting filling slurry. A first group of grouting holes and a second group of grouting holes having the distance of L1 away from the first group of grouting holes are formed in the ground surface above a coal face vertically and downwards; the distance between a main grouting hole and an auxiliary grouting hole is L2; after the covered rock is filled by grouting via the grouting holes, whether the slurry flows out of the orifice valves of the auxiliary and main grouting holes of the second group of grouting holes is observed, and the active diffusion radius of a mining region is determined according to the slurry outflow condition. The holes for detecting the active diffusion radius of the slurry are all the grouting holes; the control effect on the subsequent grouting filling of the holes and surface subsidence is not affected and the problem of failure in detecting the active diffusion radius of the mining region by use of the grouting holes in traditional grouting filling projects is solved.

Description

technical field [0001] The invention relates to a method for detecting the effective diffusion radius of mining slurry for overburden grouting filling mining in coal mines, in particular to a method for detecting the effective diffusion radius of slurry suitable for mining overlying rock isolation grouting filling mining for pressing coal under buildings. Background technique [0002] With the continuous development of economy and society, the cost of traditional village relocation coal mining is getting higher and higher and the implementation difficulty is getting more and more difficult. Therefore, coal mining without relocation of villages has become an urgent demand of coal enterprises, especially for high recovery rate and low cost. A technology with low energy consumption and little interference with coal mining. Overlying rock grouting filling technology has these technical advantages. For example, patent ZL201210164929.9 discloses a coal mining method for mining ove...

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
IPC IPC(8): E21F15/00E21B47/04E21B49/00
CPCE21B47/04E21B49/008E21F15/08
Inventor 轩大洋许家林王秉龙滕浩
Owner CHINA UNIV OF MINING & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap