Segmented ditch for improving shovel loading and transporting efficiency of strip mine
By optimizing the angle between the blasting direction and the strata of the ore, and designing the center line of the excavation trench to tilt westward by 40° and setting inlet and outlet trenches and rock discharge ports, the problem of poor blasting effect caused by the excavation direction of the open-pit mine being consistent with the direction of the ore strata was solved, the operating efficiency and transportation efficiency of the loading equipment were improved, and the production cost was reduced.
Patent Information
- Application Number
- CN202520356392.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The direction of trench excavation in existing open-pit mines is consistent with the strike of the ore strata, resulting in poor blasting effects and affecting the operating efficiency of loading equipment.
The angle between the blasting direction and the strike of the ore bedding was optimized, and the center line of the excavation trench was designed to tilt westward by 40° to form the east and west working sides. The trench entrance and exit and the rock discharge port were set up to achieve efficient operation of loading and transportation equipment.
It improved blasting results, reduced the amount of foundation and large rocks, increased the operating efficiency of loading equipment, shortened transportation distance, reduced production costs, and enhanced the overall economic benefits of open-pit mines.
Smart Images
Figure CN223739397U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to open pit mining technical field especially relates to a kind of section ditch of improving open pit shovel loading transport efficiency. BACKGROUND
[0002] According to the occurrence condition of ore deposit, topography, landform and stope form, open-pit mine uses the stripping method of top-down, north-south tunneling and east-west extension in mining design.
[0003] In actual production process, the section ditch is vertically excavated from north to south along the trend of ore body, so that the blasting direction is consistent with the trend of rock layering when the east and west working side help is expanded by blasting, the stress wave superposition effect between adjacent two holes in row is weakened, the blasting effect is poor, and it is easy to produce root and large block, which seriously restricts the operation efficiency of shovel loading equipment. UTILITY MODEL CONTENT
[0004] In view of the above technical problems, the utility model provides a kind of section ditch of improving open pit shovel loading transport efficiency, to solve the problem that the existing section ditch excavation direction is consistent with the trend of rock layering, and the blasting effect is poor.
[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows:
[0006] A kind of section ditch of improving open pit shovel loading transport efficiency, including open-pit mining step, the upper side of open-pit mining step is provided with north side step edge, the middle is provided with chute mouth, the lower side is provided with south side step edge, the left side is provided with west design mining boundary line, the right side is provided with east design mining boundary line, the vertical line of the center point of chute mouth and north side step edge on the upper side of open-pit mining step is inclined to the west by 40 ° direction and is provided with section ditch center line, section ditch is opened along section ditch center line direction, east side of section ditch is provided with east working side help, west side of section ditch is provided with west working side help, the junction of east working side help and north side step edge is provided with in-and-out ditch, the junction of west working side help and north side step edge is provided with row rock mouth.
[0007] Compared with the prior art, the utility model has the beneficial effects that: by optimizing the included angle between blasting direction and the trend of rock layering, the blasting effect is greatly improved, the production of root and large block rock is effectively reduced, the shovel loading equipment can more efficiently work, the expansion engineering progress of east and west working side help is accelerated, the transportation distance of ore is shortened, the operation efficiency of transportation equipment is improved, the production cost is reduced in all directions, and the overall economic benefit of open-pit mining is improved. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the structure schematic diagram of the utility model;
[0009] Figure 2It is the open section ditch excavating structure schematic view of the utility model.
[0010] In the figure: 1, open-pit mining step; 101, north step edge; 102, chute opening; 103, south step edge; 104, eastern designed mining boundary line; 105, western designed mining boundary line; 201, eastern working edge; 202, western working edge; 3, access trench; 4, rock discharge opening; 5, center point; 6, vertical line; 7, open section ditch center line; 8, blasting area; 9, blasting heap; 10, shovel loading equipment; 11, transport equipment; 12, open section ditch. DETAILED DESCRIPTION
[0011] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0012] An open section ditch for improving the shovel loading and transport efficiency of an open-pit mine, comprising an open-pit mining step 1, wherein the upper side of the open-pit mining step 1 is provided with a north step edge 101, the middle is provided with a chute opening 102, the lower side is provided with a south step edge 103, the left side is provided with a western designed mining boundary line 105, and the right side is provided with an eastern designed mining boundary line 104; the open-pit mining step 1 is provided with an open section ditch center line 7 in a 40° westward direction along the vertical line 6 of the center point 5 of the chute opening 102 and the north step edge 101; the open section ditch 12 is provided in the direction of the open section ditch center line 7; the eastern working edge 201 is provided on the east side of the open section ditch 12; the western working edge 202 is provided on the west side of the open section ditch 12; the eastern working edge 201 corresponds to the eastern designed mining boundary line 104; the western working edge 202 corresponds to the western designed mining boundary line 105; the access trench 3 is provided at the connection between the eastern working edge 201 and the north step edge 101; and the rock discharge opening 4 is provided at the connection between the western working edge 202 and the north step edge 101.
[0013] When working:
[0014] Firstly, the blasting area 8 is arranged along the center line 7 of the section ditch, and the blasting area 8 forms a blasting pile 9 at the north step edge 101 after blasting, the blasting pile 9 is loaded by the loading equipment 10, and the in-out ditch 3 is formed after the loading equipment 10 is loaded along the center line 7 of the section ditch to the east, the length of the in-out ditch 3 is 150m, the slope is not greater than 1:12, 5, the rock discharge port 4 is formed after the loading equipment 10 is loaded to the west, the width of the rock discharge port 4 is not less than 40m, the section ditch 12 of 60m is formed by continuously blasting along the center line 7 of the section ditch, the loading equipment 10 and the transportation equipment 11 can operate simultaneously, the ore transportation and the waste rock discharge operation can be carried out simultaneously, the in-out ditch 3 is formed, the ore is filled into the chute port 102 by the transportation equipment 11 through the in-out ditch 3 before the chute is lowered, the waste rock is discharged by the transportation equipment 11 through the rock discharge port 4, the chute port 102 is located on the section ditch 12 after the chute is lowered, the east working side slope 201 and the west working side slope 202 are gradually expanded to the east and the west respectively, until the east design mining boundary line 104 and the west design mining boundary line 105, the section ditch 12 is gradually pushed to the south along the center line, until the south step edge 103, and the open-pit mining step 1 is formed. The width of the section ditch 12 is gradually increased, the ore is directly filled into the chute port 102 by the transportation equipment 11 through the section ditch 12, the waste rock is discharged by the transportation equipment 11 through the rock discharge port 4, the transportation equipment 11 is avoided to bypass the in-out ditch 3, the ore transportation distance is shortened, the operation efficiency of the transportation equipment 11 is improved, and the production cost is reduced.
[0015] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A section ditch for improving the efficiency of shovel loading and transportation in an open-pit mine, comprising an open-pit mining bench (1), the upper side of the open-pit mining bench (1) being provided with a north bench edge (101), the middle being provided with a shaft opening (102), the lower side being provided with a south bench edge (103), the left side being provided with a west designed mining boundary line (105), and the right side being provided with an east designed mining boundary line (104), characterized in that: The open-pit mining step (1) is provided with a section ditch center line (7) which is inclined to the west by 40° along the vertical line (6) of the center point (5) of the shaft mouth (102) and the north step edge (101), and a section ditch (12) is formed along the section ditch center line, an east working side slope (201) is arranged on the east side of the section ditch (12), a west working side slope (202) is arranged on the west side of the section ditch (12), an access ditch (3) is formed at the connection of the east working side slope (201) and the north step edge (101), and a rock discharge opening (4) is formed at the connection of the west working side slope (202) and the north step edge (101).