Super-high diagonal symmetric forced grooving method without grooving well

A cutting well and super-height technology, applied in blasting and other directions, can solve the problems of high cost, low stope height and high safety risk, and achieve the effect of reducing management cost, saving mining cost and improving production intensity

Active Publication Date: 2016-12-21
安徽马钢罗河矿业有限责任公司
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of low stope section height, high cost, and high safety risk in the prior art, 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
  • Super-high diagonal symmetric forced grooving method without grooving well
  • Super-high diagonal symmetric forced grooving method without grooving well
  • Super-high diagonal symmetric forced grooving method without grooving well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for forced grooving with ultra-high slant line symmetry without cutting wells, the steps are as follows:

[0051] 1) According to stope conditions,

[0052] for construction, such as Figure 5 , complete the construction of ore-out approach road 7, cutting lane 4, joint lane 1, joint lane 2 6, and ore-collecting cutting ditch, forming stope 1 2 and stope 2 3; the height of the top of the top area 1 is 2-2.5 m, so that the drilling rig works on both sides of the top area 1.

[0053] 2) Construction in the middle of the cutting lane 4 forms a roof area 1, and the roof area 1 is a triangular area;

[0054] 3) Use the drilling trolley to determine the drilling construction point 11 at the left and right symmetrical positions of the roof area 1 of the cutting lane 4. There are 9 to 13 drilling construction points on the left and right sides of the roof area 1. Drill holes with 10 front angles on the hole row surface, and set 2 to 3 blast hole row surfaces 10 for ...

Embodiment 2

[0059] like Figure 5-8 As shown, analyzing the ore characteristics of this mining area, a scheme suitable for the stope height of 33 meters, without the construction of the upper cutting road, the non-cutting shaft forced trough pulling, the design scheme is as follows:

[0060] The required mining height is 33 meters and the panel cutting lane length is 58 meters:

[0061] ①The width of the panel cutting lane is 5.0~6.0m;

[0062] ②The effective rock drilling depth of upward (forward leaning) beam-shaped medium-deep hole drilling jumbo is ≮36.0m;

[0063] ③The effective charge depth of upward-facing medium-deep hole charge device or trolley is ≮36.0m;

[0064] ④Explosive density 0.95~1.25t / m3;

[0065] ⑤Compensation space factor ≮1.25 times;

[0066] ⑥Arrange the forced slotting holes mirror-symmetrically on both wings along the axis of the panel cutting lane;

[0067] ⑦Technical parameters of piercing and blasting technology: the total footage of piercing is 5300m, and...

Embodiment 3

[0102] The actual blasting scheme is as follows:

[0103] The center of the trough is designed as the intersection point of the ore exit approach and the center line of the cutting roadway south of Liandao.

[0104] The small machine cannon is dug at the center line of the groove to ensure the blasting effect of the first sequence.

[0105] There are a total of 22 medium and deep hole rock drilling positions, 11 of which are symmetrically arranged on both sides. If the drilling angle is small and it is difficult to open the hole, use a small machine gun to dig the reverse wedge after setting out to improve the drilling accuracy.

[0106] The blasting adopts symmetrical blasting, and loosens the four sides of the mining area to loosen the ore, and the principle is to expose the eyebrow line.

[0107] The design of the groove is 2 meters, the total footage of the designed groove hole is 5296.4 meters, the volume of the groove is 9048 cubic meters, and the converted ore volume ...

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
Proportionaaaaaaaaaa
Proportionaaaaaaaaaa
Login to view more

Abstract

The invention discloses a super-high diagonal symmetric forced grooving method without a grooving well, and belongs to the field of underground mining. The method includes the steps of 1, according to stope conditions, carrying out construction and completing construction of an extracted ore drift, a cutting roadway, a linked roadway and a gathering trench to form a stope; 2, carrying construction on the middle of the cutting roadway to form a roof cutting area, wherein the roof cutting area is a triangular area; 3, determining drilling construction sites at the bilateral symmetry positions of the roof cutting area of the cutting roadway through a drilling trolley, wherein drilling is carried out in the drilling construction sites according to forward inclination angles of blast hole row surfaces, the forward inclination angles are 40-88 degrees relative to the horizontal plane, and horizontal dip angles of the blast hole row surfaces from the middle to the two sides are gradually increased; and 4, after drilling is completed, carrying out filling to form a blast hole filling area, carrying out blasting sequentially according to the blast hole row surfaces, blasting the blasting holes in two symmetric hole sites each time, then carrying out blasting continuously and withdrawing ore through blasting. The method has the advantages that the sub-section height of the stope is large, the cost is low and the safety risk is low.

Description

technical field [0001] The invention relates to the field of underground mining, and more specifically relates to a method for forced grooving with super-height slant line symmetry without cutting shafts. Background technique [0002] When the height of the traditional domestic stope is greater than 20 meters, the cutting well is generally used to draw the groove, but the well-cut groove needs to meet the cutting well chamber, connecting road and other projects on the top of the stope, and has the necessary conditions for the construction of the raise drilling rig. When the continuous thickness of the ore body is between 20 and 35 meters, it is relatively large to be divided into two layers for mining and cutting; if the common method is used to construct the cutting well, the height is not more than 15 meters, and the safety is poor. When the phenomenon of branching and recombination of the ore body is frequent, the forced trough drawing technology without cutting shaft can...

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): F42D3/04F42D1/00
CPCF42D1/00F42D3/04
Inventor 何晓文张辉郏威
Owner 安徽马钢罗河矿业有限责任公司
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