Lateral presplitting blasting mining method for medium-thickness ore body in gently inclined ore body
A mining method and pre-splitting blasting technology, which is applied in blasting, surface mining, underground mining, etc., can solve problems such as unfavorable cost control, loss of ore volume in mine houses, and damage to ore exit routes, so as to reduce the direct mining cost of ore, The effect of reducing the loss in the ore field and increasing the ore recovery rate
Pending Publication Date: 2021-10-22
YUXI MINING
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During the blasting process, due to the existence of the ore exit route, a step surface will be formed on the boundary of the "V" groove of the cutting groove after blasting, which will firstly cause the loss of ore in the corresponding part of the mine blasting; secondly, due to the existence of the step surface, the supply Ore is easy to accumulate during the mining period, and the loss in the field is relatively large; if the designed recovery of ore volume is to be achieved, large-diameter deep holes in the super-deep part will be required, which will cause great damage to the ore-out route and greatly affect the mining technical and economic indicators , not conducive to cost control
[0003] The current mining method has the following defects: If the large hole is directly used to control the natural repose angle, the large hole needs to be super deep, and the large hole will destroy the mine exit and the natural repose angle to form a step shape. Fan holes form the natural repose angle of ore accumulation, increasing the amount of deep holes
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0044] A kind of lateral pre-splitting blasting mining method of medium-thick ore body with gently inclined ore body, the specific steps are as follows:
[0045] Step (1) Set up panels and mining units: the height of the panel is the same as the thickness of the mineable ore body, and the panel is divided along the ore body inclination, and the columns are arranged along the trend in the mining unit, and the adjacent mining units are spaced along the inclination direction column; the thickness of the mining body is 20-70m, the panel area is divided into 3-4 areas along the ore body tendency, and the width of the inter-column is 6-8m;
[0046]Step (2) Arranging the mining system: Arrange the mining trunk line 5 along the ore body towards the footwall, the mining trunk line is excavated to the ore body, and the ore exit road 4 is excavated, and the section mining trunk line is arranged with a slide shaft 6 connected to the bottom to transport the piercing vein 2, Along the ore b...
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
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
| Aperture | aaaaa | aaaaa |
| Diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a lateral presplitting blasting mining method for a medium-thickness ore body in a gently inclined ore body, and belongs to the technical field of mining. The mining method comprises the following steps of: (1) setting a panel area and a stoping unit; (2) arranging a mining preparation system; (3) cutting; (4) drilling and blasting; (5) ore caving; and (6) ore removal. According to the lateral presplitting blasting mining method, presplitting blast holes are formed in a drilling trench in the direction of the trench according to the natural repose angle of ore, the drilling amount of upward scallop holes is reduced, the ore caving amount of downward large-diameter deep holes is increased, blasting presplitting cracks are effectively formed, the loss in an ore field is reduced, the ore recovery rate is increased, and the direct ore mining cost is reduced.
Description
technical field [0001] The invention relates to a lateral pre-splitting blasting mining method of a medium-thick ore body with a gently inclined ore body, and belongs to the technical field of mining. Background technique [0002] The existing mining method is a two-step continuous mining method with parallel large holes, segmented empty field cemented ore pillars. The mine room mainly adopts large-diameter medium-deep holes and medium-deep holes combined with lateral extrusion blasting. The floor of the ore body is excavated upwards for the cutting well, and a parallel downward large-diameter deep hole is drilled in the cutting drift, with the cutting well as the free surface, and the blasting forms the cutting groove. During the blasting process, due to the existence of the ore exit route, a step surface will be formed on the boundary of the "V" groove of the cutting groove after blasting, which will firstly cause the loss of ore in the corresponding part of the mine blast...
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
Login to View More IPC IPC(8): E21C41/22F42D3/04
CPCE21C41/22F42D3/04
Inventor 陈浩张希黄原明徐万奎李清林王正雄陈勇进邓岗何应明
Owner YUXI MINING