CN114193626A - Highand steep slope backup control cutting forming method for strip mine - Google Patents
Highand steep slope backup control cutting forming method for strip mine Download PDFInfo
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- CN114193626A CN114193626A CN202111420083.6A CN202111420083A CN114193626A CN 114193626 A CN114193626 A CN 114193626A CN 202111420083 A CN202111420083 A CN 202111420083A CN 114193626 A CN114193626 A CN 114193626A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 15
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 13
- 239000010432 diamond Substances 0.000 claims abstract description 13
- 238000005065 mining Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/005—Devices for the automatic drive or the program control of the machines
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Abstract
The invention relates to the field of mining and discloses a method for controlling, cutting and forming a highand steep slope backup of an open-pit mine, which comprises the following steps: (1) dividing the strip mine side slope into a plurality of cutting work areas in the side slope walking direction; (2) drawing a groove at the bottom of the cutting working area to obtain a groove body, and paving a track in the groove body; (3) drilling holes among the areas of each cutting working area by adopting a drilling and rock drilling trolley; (4) taking the drill hole as the initial end of the cutting surface, and connecting the diamond ropes at the drill hole into a loop by adopting a guide wheel; and is connected to the power unit; cutting is carried out, and the cutting work of a cutting work area is completed; (5) and (5) circulating the steps (2) to (4), and cutting the next cutting working area until the cutting of the last cutting working area is finished. The invention effectively solves the problems of slope instability, landslide, collapse and toppling caused in the surface mining process, and has the advantages of simple equipment maintenance, convenient consumable replacement and orderly process connection.
Description
Technical Field
The invention belongs to the field of mining, and particularly relates to a highslope and slope leaning slope controlled cutting forming method for strip mines.
Background
Surface mining is used as a main mining mode of mineral resources, and a side slope with a large height and a steep gradient is formed along with continuous deepening of the mining depth. The final side slope is a non-working side slope formed when the mining operation is carried out to the design boundary of the strip mine. In order to obtain the maximum economic benefit, the final slope angle is usually the maximum value on the premise of ensuring the slope safety in the design process, so that the high and steep final slope is easy to cause the instability of the slope under the combined action of engineering disturbance and natural factors, further damages such as landslide, collapse, toppling and the like are generated, and serious threats are generated on personnel and equipment within the influence range of the slope. According to the statistics of the existing literature data, the traditional presplitting blasting is mainly matched with the throwing blasting for mining and stripping the final side of the strip mine domestically, and the novel air interval presplitting blasting method of PVC air interval column spacing is the same as the conventional blasting method and the dense buffer hole method.
Disclosure of Invention
The invention provides a highand steep slope leaning control cutting forming method for strip mines, aiming at solving the problems of slope instability, landslide, collapse and toppling in the process of strip mining in the prior art.
The invention adopts the specific scheme that: a method for controlling, cutting and forming a highand steep slope backup of a strip mine comprises the following steps:
(1) dividing the strip mine side slope into a plurality of cutting work areas in the side slope walking direction;
(2) drawing a groove at the bottom of the cutting working area to obtain a groove body, and paving a track in the groove body;
(3) drilling holes among the areas of each cutting working area by adopting a drilling and rock drilling trolley;
(4) taking the drill hole as the initial end of the cutting surface, and connecting the diamond ropes at the drill hole into a loop by adopting a guide wheel; connecting the diamond rope to the power unit; cutting is carried out, and the cutting work of a cutting work area is completed;
(5) and (5) circulating the steps (2) to (4), and cutting the next cutting working area until the cutting of the last cutting working area is finished.
The length of the working area cut in the step (1) is 40-60m, and the side slope line of the working area is cut.
And (3) in the step (2), the height of the bottom groove body is 1-2 m, and the depth of the bottom groove body is 3-4 m.
The aperture of the drilling hole in the step (3) is 170-180 mm.
And (5) adopting unmanned remote control cutting.
In the method, the gradient of the step slope is between 60 and 80 degrees.
The power unit is a power turbine set.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the characteristics that a loop formed by diamond ropes has a plurality of cutting working lines are utilized, on one hand, the fixation of the guide wheel and the track can move stably along with the power unit in the whole cutting working process, and the equipment adjusts the angle of a cutting surface through the inclination angles of the track and the guide wheel so as to achieve accurate cutting control stripping ratio and achieve control of low dilution rate cutting; on the other hand, the cutting loop adopted by the invention simultaneously adopts two working cutting surfaces, the working circulation utilizes the arrangement of guide wheels to realize rapid iterative cutting, and the speed is greatly improved compared with the cutting of a common single working surface.
2. The invention provides a simple cutting mode for the high and steep side slope of the strip mine, solves the problems of side slope instability, landslide, collapse and toppling caused in the strip mining process, and has the advantages of simple equipment maintenance, convenient material replacement and orderly process connection.
3. The cutting method provided by the invention adopts a power unit active propulsion mode to drive the cutting diamond rope to cut the side slope, only the cutting power unit exists in a real-time working area, a worker always remotely operates outside the working area, equipment actively moves forward in the cutting direction and is opposite to a rock falling area, and the condition of safe operation is met.
Drawings
FIG. 1 is a schematic view showing the overall structure of a strip mine in example 1 of the present invention;
FIG. 2 is a schematic view of the cutting station I of FIG. 1;
FIG. 3 is a side view of the cutting station I of FIG. 1;
FIG. 4 is a top view of the cutting station of FIG. 1;
fig. 5 is a schematic view of the working apparatus.
Wherein the reference numerals are respectively:
1. drilling; 2. a diamond wire; 3. a guide wheel; 4. a power unit; 5. a trough body; 6. drilling a drill jumbo; 7. a track; 8. the slope rock mass is to be cut.
Detailed Description
The present invention will be described in further detail below with reference to the attached drawings, and it should be clearly understood herein that the described embodiments are not all embodiments, but are merely illustrative and not restrictive of the present invention.
The mining area of a certain open pit mine of the black river of the Heilongjiang has no active large fracture distribution, but is influenced by the northern-west structure, the northern-west arc structure and the northern-east structure of the mining area, the physical and chemical zones of fracture fragments, the fracture erosion zones and the next-level small fracture and small erosion zones in the mining area develop relatively, the general scale is smaller, and the side slope of the mining area is divided into five zones I, II, III, IV and V. The side slope mainly comprises a III-grade rock body, and is of a thick layer structure and a medium-thick layer structure; and the IV-level rock mass, the altered zone and the fracture zone V-level rock mass are discontinuously distributed in the whole area. The V-level rock mass is relatively small in thickness, is discontinuously distributed in a lens shape, is limited in extension range, and is not easy to generate large-scale slippage disasters. However, IV-V grade rock mass has relatively poor self-stability capability and is easy to have geological phenomena such as block falling, rock falling and collapse. The strip mine is selected and cut by the following method.
The slope of the step slope is between 60 and 80 degrees, the angle is the actual slope angle of the slope to be cut, and the purpose is that the final slope angle after cutting meets the design slope angle so as to achieve the purposes of fully stabilizing the slope and maximizing the economic benefit of the stripping ratio.
Example 1
And selecting a +560m platform as an implementation platform for implementing the slope leaning control cutting forming method for the high and steep slope of the strip mine on the experimental slope. The method comprises the following specific implementation steps:
(1) and in the running direction of the side slope, dividing the side slope of the strip mine into cutting working areas, wherein the working areas are 40m, 30m and 50m long, ensuring that the regional boundary is relatively fitted with a designed side slope line, and the working areas are named as areas I, II and III according to the construction sequence. (2) And (3) firstly, drawing a groove at the bottom of the cutting working area, wherein the height of a groove body obtained by drawing the groove is 1.5m and the depth is 3m, and paving a track. (3) Drilling holes are drilled among all the areas by using a drilling and rock drilling trolley, and the gradient of the step slope is 60 degrees. The drilling angle is the final edge slope design angle, and the diameter of the hollow hole is 178 mm. (4) After the hole is tested, the cutting surface can be used as the initial end of the cutting surface, the diamond rope for cutting is connected into a loop at the drilling position through the guide wheel, passes through the track and is finally connected to the power unit. (5) After the circuit connection is finished, trial cutting is carried out, the completeness of a cutting loop is guaranteed, and personnel withdraw from a working area to carry out unmanned remote control operation. Finally, the cutting of the cutting working area is completed, and the power unit enters the next working area on the track to cut the next area. The working equipment adopted by the invention comprises a diamond rope, a guide wheel and a power unit; and the diamond rope penetrates through the guide wheel and is connected with the power wheel unit.
Example 2
A method for controlling, cutting and forming a highand steep slope backup of a strip mine comprises the following steps: (1) and in the running direction of the side slope, dividing the side slope of the strip mine into cutting working areas, wherein the working areas are 60m, 30m and 50m long, ensuring that the regional boundary is relatively fitted with a designed side slope line, and naming the working areas as areas I, II and III according to the construction sequence. (2) And (3) firstly, drawing a groove at the bottom of the cutting working area, wherein the height of a groove body obtained by drawing the groove is 1m and the depth is 4m, and paving a track. (3) And drilling holes among the regions by using a drilling and rock drilling trolley, wherein the slope of the step slope is 64 degrees, the drilling angle is the final slope design slope angle, and the diameter of the hollow hole is 170 mm. (4) After the hole is tested, the cutting surface can be used as the initial end of the cutting surface, the diamond rope for cutting is connected into a loop at the drilling position through the guide wheel, passes through the track and is finally connected to the power unit. (5) After the circuit connection is finished, trial cutting is carried out, the completeness of a cutting loop is guaranteed, and personnel withdraw from a working area to carry out unmanned remote control operation. Finally, the cutting of the cutting working area is completed, and the power unit enters the next working area on the track to cut the next area.
Example 3
A method for controlling, cutting and forming a highand steep slope backup of a strip mine comprises the following steps: (1) and in the running direction of the side slope, dividing the side slope of the strip mine into cutting working areas, wherein the working areas are 60m, 30m and 50m long, ensuring that the regional boundary is relatively fitted with a designed side slope line, and naming the working areas as areas I, II and III according to the construction sequence. (2) And (3) firstly, drawing a groove at the bottom of the cutting working area, wherein the height of a groove body obtained by drawing the groove is 1.5m and the depth is 3.5m, and paving a track. (3) And drilling holes among the regions by using a drilling and rock drilling trolley, wherein the slope of the step slope is 80 degrees, the drilling angle is the final slope design slope angle, and the diameter of the hollow hole is 180 mm. (4) After the hole is tested, the cutting surface can be used as the initial end of the cutting surface, the diamond rope for cutting is connected into a loop at the drilling position through the guide wheel, passes through the track and is finally connected to the power unit. (5) After the circuit connection is finished, trial cutting is carried out, the completeness of a cutting loop is guaranteed, and personnel withdraw from a working area to carry out unmanned remote control operation. Finally, the cutting of the cutting working area is completed, and the power unit enters the next working area on the track to cut the next area.
The invention aims to solve the problems of slope instability, landslide, collapse and toppling caused in the process of open-pit mining, and meets the requirements of high stability, small stripping amount and high safety production requirement of the permanent slope of the high and steep slope rock of the open-pit mine. The highand steep slope backup control cutting forming method for the strip mine effectively overcomes the defects of low safety, large vibration, large resource dilution loss, complex process mining cycle succession, low mechanization degree and high labor intensity of the conventional highand steep slope mining and stripping method for the strip mine, effectively avoids the problems that the slope stability is influenced by further development of the slope section crack, and has the advantages of simple equipment maintenance, convenient and fast material replacement and orderly process connection.
The drawings and the explanation are only for one embodiment of the present invention, but the specific protection scope of the present invention is not limited to the above explanation, and any simple replacement or change within the technical idea of the present invention and the technical solution according to the present invention should be within the protection scope of the present invention.
Claims (7)
1. A method for controlling, cutting and forming a highand steep slope of a strip mine is characterized by comprising the following steps:
(1) dividing the strip mine side slope into a plurality of cutting work areas in the side slope walking direction;
(2) drawing a groove at the bottom of the cutting working area to obtain a groove body, and paving a track in the groove body;
(3) drilling holes among the areas of each cutting working area by adopting a drilling and rock drilling trolley;
(4) taking the drill hole as the initial end of the cutting surface, and connecting the diamond ropes at the drill hole into a loop by adopting a guide wheel; connecting the diamond rope to the power unit; cutting is carried out, and the cutting work of a cutting work area is completed;
(5) and (5) circulating the steps (2) to (4), and cutting the next cutting working area until the cutting of the last cutting working area is finished.
2. The controlled cutting and forming method for the highslope and steep slope of the open-pit mine according to claim 1, wherein the length of the working area cut in the step (1) is 40-60 m.
3. The method for controlling, cutting and forming the highslope and steep slope leaning slope of the open-pit mine according to claim 2, wherein the height of the bottom groove body in the step (2) is 1-2 m, and the depth of the bottom groove body is 3-4 m.
4. The method for controlling, cutting and forming the highgradient slope of the open-pit mine according to claim 3, wherein the bore diameter of the bore hole in the step (3) is 170-180 mm.
5. The method for controlling, cutting and forming the highrise and steep slope inarch of the open-pit mine according to claim 4, wherein unmanned remote control cutting is adopted in the steps (4) and (5).
6. The method for controlling, cutting and forming the highand steep slope and slope depending on any one of claims 1 to 5, wherein the power unit is a power turbine unit.
7. The method for controlling, cutting and forming the highrise and steep slope inarch of the open-pit mine according to claim 6, wherein the slope of the step slope in the method is between 60 and 80 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111420083.6A CN114193626A (en) | 2021-11-26 | 2021-11-26 | Highand steep slope backup control cutting forming method for strip mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111420083.6A CN114193626A (en) | 2021-11-26 | 2021-11-26 | Highand steep slope backup control cutting forming method for strip mine |
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| CN114193626A true CN114193626A (en) | 2022-03-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420876A (en) * | 2013-09-02 | 2015-03-18 | 张崇欣 | Method for mining remained-slope and steep slope of open pit mine |
| CN105240016A (en) * | 2015-11-23 | 2016-01-13 | 武汉理工大学 | Filling mining method with gentle-dip lamellar jade ore block cutting and strip dragging |
| US20170284200A1 (en) * | 2014-09-01 | 2017-10-05 | Opti-Minez Pty Ltd | Method of moving material |
| CN110924398A (en) * | 2019-10-28 | 2020-03-27 | 中交第二航务工程局有限公司 | High-strength rock slope widening excavation construction method under condition of traffic protection |
| CN112483087A (en) * | 2020-11-26 | 2021-03-12 | 杨得礼 | Mining method of steeply inclined coal seam |
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2021
- 2021-11-26 CN CN202111420083.6A patent/CN114193626A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420876A (en) * | 2013-09-02 | 2015-03-18 | 张崇欣 | Method for mining remained-slope and steep slope of open pit mine |
| US20170284200A1 (en) * | 2014-09-01 | 2017-10-05 | Opti-Minez Pty Ltd | Method of moving material |
| CN105240016A (en) * | 2015-11-23 | 2016-01-13 | 武汉理工大学 | Filling mining method with gentle-dip lamellar jade ore block cutting and strip dragging |
| CN110924398A (en) * | 2019-10-28 | 2020-03-27 | 中交第二航务工程局有限公司 | High-strength rock slope widening excavation construction method under condition of traffic protection |
| CN112483087A (en) * | 2020-11-26 | 2021-03-12 | 杨得礼 | Mining method of steeply inclined coal seam |
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Application publication date: 20220318 |