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Goaf Filling Method of Hanging Reinforced Filling Body

A goaf and hanging technology, which is applied in the direction of filling, mining equipment, earth cube drilling and mining, etc., can solve the problems of insufficient strength of filling body, poor integrity of filling body, high filling cost, etc., and achieve saving of reinforcement materials and low cost , the effect of improving flexibility

Active Publication Date: 2019-07-09
HUNAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a goaf filling method of a suspended reinforced filling body to solve the problems of high filling cost, poor integrity of the filling body, insufficient strength of the filling body, and failure of the side when the tall filling body is exposed. technical problem

Method used

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  • Goaf Filling Method of Hanging Reinforced Filling Body
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  • Goaf Filling Method of Hanging Reinforced Filling Body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 , figure 2 and image 3 As shown, the preferred embodiment of the present invention is a reinforcement method for embedding a three-dimensional flexible mesh in key positions of the filling body.

[0063] An iron ore adopts the stage filling method and two-step mining. The structural parameters of the ore block are: the height of the ore block is 100m, the width of the ore pillar is 20m, the width of the mine room is 25m, and the length of the ore block is 50m. The gob 2 is formed after mining the pillar and the pillar, and the pillar goaf 2 is filled, and then the mining of the pillars on both sides of the mine is completed, and the strength of the filling body meets the requirements of the mining process, and then returns to the mining house. , the two sides of the mine stope are the filling body of the pillar stope.

[0064] (1) Return the mining pillar to form the goaf 2.

[0065] (2) Determine the reinforcement reinforcement area of ​​the fill...

Embodiment 2

[0076] Such as Figure 4 As shown, the flexible net is suspended using cantilevered steel brackets.

[0077] The flexible net (flexible net cage 1) is installed:

[0078] 1) Install the suspension steel wire rope support cantilever support (longitudinal support beam 9), the suspension steel wire rope support cantilever support (longitudinal support beam 9) is a rod system or truss that can be lengthened; the flexible net (flexible cage 1) is fixed on the flexible reinforced net On the suspension rod (strut bar 5), and bind the cross bar suspension rope (suspension rope unit 6) at the two ends of the flexible reinforced mesh suspension rod (strut shape bar 5), then adopt the rope clip to tie the cross bar suspension rope (suspension rope unit 6) Unit 6) is fixed on the fixed steel pipe (suspension fixed beam 4) of the suspension rope of the cross bar, and the fixed steel pipe (suspension fixed beam 4) of the suspension rope of the cross bar is 3m in every joint, and adopts qui...

Embodiment 3

[0086] The goaf filling method of hanging reinforced filling body, according to the mechanical analysis of the filling stope and the filling body, determines the reinforcement area, reinforcement method and shape of the flexible cage 1 of the filling body, and places the reinforcement in a fixed way. Into the filling stope to improve the tensile strength and shear strength of the filling body. A monitoring system is added to the flexible cage 1 of the filling body to monitor the stability of the filling body after filling. According to the actual situation of the filling stope and the filling body, a mechanical model for the filling stope and the filling body is established, and the mechanical analysis and / or numerical analysis are carried out to determine the tensile stress concentration area and the shear stress concentration area of ​​the filling body. According to the stress magnitude of the tensile stress concentration area and the shear stress concentration area, the mec...

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Abstract

The invention discloses a goaf filling method of a suspension type reinforcement intensifying filling body. The method includes the following steps that a, according to the requirement of the spatialstructure parameter and strength of goaf reinforcement intensifying region, a flexible mesh cage is produced; b, a tow rope is erected at a channel opening in the upper portion of the goaf towards thegoaf; c, a suspension fixed beam is conveyed and fixed in the goaf along the tow rope and the flexible mesh cage is synchronously hoisted on the suspension fixed beam; d, after the suspension fixed beam is conveyed to the preset position, the tow rope is loosened and the suspension fixed beam with the flexible mesh cage is adjusted to stay on the preset position in goaf; and e, the goaf is filled. The method is simple, easy to construct, high in security and low in cost; the mesh cage in the filling body can effectively improve the completion and the strength properties of the filling body, the method is beneficial to reducing the filling composite cost, improving stope security and reducing the rate of rate of dilution dilution.

Description

technical field [0001] The invention relates to the technical field of filling and mining, in particular to a goaf filling method for a suspended reinforced filling body suitable for a tall goaf or an ultra-high goaf. Background technique [0002] According to ground pressure management methods, mining methods can be divided into caving mining method, open-pit mining method and filling mining method. Among them, filling mining method has the strongest applicability and can achieve low-waste, safe and high-recovery mining. [0003] In order to achieve large-scale mining, super-large stope structure parameters are mostly adopted. Generally, the larger the stope structure parameters, the greater the production capacity that can be realized, and the greater the exposed height and area of ​​the filling body; but from the perspective of mechanics and filling costs , the greater the exposed height and exposed area of ​​the filling body, the higher the strength performance requireme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/06
CPCE21F15/06
Inventor 柳小胜王卫军赖伟罗佳刘超莫东旭
Owner HUNAN UNIV OF SCI & TECH
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