Main control and roadway retaining method for anchor injection and top-cutting in deep mining roadway

A mining roadway and roof cutting technology, which is applied in the direction of tunnel, tunnel lining, bolt installation, etc., can solve the problem that it is difficult to meet the support requirements of deep gob-side roadway

Active Publication Date: 2018-10-19
SHANDONG UNIV OF SCI & TECH
View PDF10 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a main control roadway retaining method of anchoring, grouting and roof cutting in deep mining roadways, which adopts the method of "grouting reinforcement in the

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
  • Main control and roadway retaining method for anchor injection and top-cutting in deep mining roadway
  • Main control and roadway retaining method for anchor injection and top-cutting in deep mining roadway
  • Main control and roadway retaining method for anchor injection and top-cutting in deep mining roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0095] Such as Figure 1 to Figure 5 As shown, this embodiment provides a main control roadway retaining method for anchoring, grouting and roof cutting in deep recovery roadway, which includes the following steps:

[0096] Step 1. Determining the technical parameters required for deep mining roadway to realize roof cutting and retaining roadway

[0097] Technical parameters include:

[0098] Mining height h, unit is m;

[0099] The distance L between the basic roof fracture line 10 and the coal wall 0 , the unit is m;

[0100] Basic top rock beam 6 length L 1 , the unit is m;

[0101] Direct top 3 suspension length L S , the unit is m;

[0102] Roadway width L R , the unit is m;

[0103] Overburden 1 bulk density γ S , the unit is kN / m 3 ;

[0104] Thickness of overlying strata 1 m S , the unit is m;

[0105] Basic top 2 rock formation bulk density¶ E , the unit is kN / m 3 ;

[0106] Basic top 2 rock layer thickness m E , the unit is m;

[0107] Direct Top 3...

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 main control and roadway retaining method for anchor injection and top-cutting in a deep mining roadway, which comprises the following steps: step 1, determining the technicalparameters required for realizing the top-cut and roadway retaining in the deep mining roadway; step 2, carrying out the grouting anchor cable support construction during the tunnelling period of thedeep mining roadway; step 3, carrying out the advanced overcut and perforating construction at the roadway side during the mining of the working face; step 4, carrying out grouting anchor cable support construction during the mining of the working face; step 5, carrying out monomer strut support construction at the roadway side during the mining of the working surface; step 6, carrying out auxiliary support construction. The method has the advantages that the supporting requirements of the deep gob-side entry can be satisfied when carrying out non-pillar mining construction in the deep mine.

Description

technical field [0001] The invention relates to the technical field of mine pressure and roadway support, in particular to a main-controlled roadway retention method for anchoring, grouting and roof cutting in deep mining roadways. Background technique [0002] For a long time, my country's mines have mostly used coal pillars to mine and maintain roadways, resulting in a large amount of coal loss, which generally accounts for about 40% of the total coal loss in the mine. Therefore, the study of coal pillar-free mining technology between sections is an effective and good means for most coal mining enterprises, whether it is to improve the recovery rate of coal resources or reduce the rate of roadway excavation. With the increase of mine mining scope and mining depth, the complex environment of "three highs and one disturbance" in the deep surrounding rock has brought a series of problems to the application of gob-side entry retaining technology: The load disturbance increase...

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): E21D11/00E21D20/02E21D11/10
CPCE21D11/006E21D11/105E21D20/021
Inventor 刘学生范德源谭云亮颜磊宁建国蒋邦友张广超江宁
Owner SHANDONG UNIV OF SCI & 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