CN105626076A - High-efficiency mining method of dragline saw-tooth type working bench - Google Patents
High-efficiency mining method of dragline saw-tooth type working bench Download PDFInfo
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- CN105626076A CN105626076A CN201610220607.XA CN201610220607A CN105626076A CN 105626076 A CN105626076 A CN 105626076A CN 201610220607 A CN201610220607 A CN 201610220607A CN 105626076 A CN105626076 A CN 105626076A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 238000005266 casting Methods 0.000 claims abstract description 53
- 238000005422 blasting Methods 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 12
- 230000004087 circulation Effects 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
- E21C41/28—Methods of surface mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Geology (AREA)
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- Shovels (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The embodiment of the invention discloses a high-efficiency mining method of a dragline saw-tooth type working bench, which relates to the technical field of open coal mining and can improve the operating efficiency of draglines. The high-efficiency mining method of a dragline saw-tooth type working bench comprises the steps of: carrying out pin-point blasting on solid rock steps above a coal seam to form a blasting muck pile; leveling and stripping the blasting muck pile by joint operation of push dozers, single-bucket excavators and trucks to form a dragline working bench of a predetermined height, forming a saw-tooth type wharf by extension on the edge of one side of the dragline working bench near the dumping site; when not less than one saw-tooth type wharf is formed by extension on the edge of one side of the dragline working bench near the dumping site, driving the dragline into the ditch to the working area; and driving the dragline in a predetermined traveling line sequentially through the saw-tooth wharf inside bench and the saw-tooth wharf to carry out casting operation. The high-efficiency mining method of a dragline saw-tooth type working bench is suitable for open coal mining by a dragline casting process without transportation.
Description
Technical field
The present invention relates to Opencut coal mine mining technical field, particularly relate to one and draw bucket shovel zig-zag working berm high-efficiency mining method.
Background technology
The key operation flow process of domestic open coal mine application overcast stripping is as follows:
(1) pin-point blasting in advance of entity height step forms quick-fried heap;
(2) dozer, Dan Dou, the auxiliary quick-fried heap of released part of truck, and square position expanded, flatten;
(3) draw bucket shovel to stand on and on square position, carry out casting operation.
At home in the application of overcast stripping, draw bucket shovel usually to stand on and the rectangle square position of dozer, single bucket excavator, truck joint mapping carries out casting operation. This kind of overcast stripping decoration form and operation square position design, field practice mainly exists following problem: (1). draw the rectangular design of bucket shovel operation square position, too much material is concentrated on coal ditch place, not only increase the square position expansion workload of single bucket excavator, truck, too increase Pull shovel handling and peel off two casting amounts in link, indirectly reduce the effective casting efficiency drawing bucket shovel; (2). for effectively playing the unit operational capability drawing bucket shovel, the requirement for height that operation square position is certain need to be ensured, rectangular design will certainly limit the width of operation square position, make to draw the bucket shovel working rig distance of positions away from refuse dump, abandon restriction in space, casting haul distance row and draw the operation efficiency of bucket shovel.
Summary of the invention
In view of this, the embodiment of the present invention provides one to draw bucket shovel zig-zag working berm high-efficiency mining method, it is possible to improves and draws bucket shovel operation efficiency, reduces and peel off cost.
For achieving the above object, embodiments of the invention adopt following technical scheme:
One draws bucket shovel zig-zag working berm high-efficiency mining method, comprising:
Step 1, entity rock step to top, coal seam carry out pin-point blasting and form quick-fried heap;
Step 2, the employing smooth quick-fried heap of dozer, the operation square position of formation single bucket excavator, truck and transport passage;
Step 3, adopt dozer, single bucket excavator, truck integration of operation is smooth and peels off quick-fried heap, formed predetermined height draw bucket shovel operation square position, wherein, draw bucket shovel operation square position near side, refuse dump edge expand be formed with zig-zag harbour;
Step 4, draw bucket shovel operation square position near side, refuse dump edge expand formation be no less than a zig-zag harbour time, draw bucket shovel walk row enter ditch to work area;
Step 5, draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation;
Step 6, dozer, single bucket excavator, truck advance with the circulation drawing bucket shovel to repeat above-mentioned steps 3 to step 5, until completing the quick-fried heap casting operation in whole unit bar district.
Can selection of land, the described entity rock step to top, coal seam carries out pin-point blasting and forms quick-fried heap, comprising:
The entity rock step on top, coal seam is carried out pin-point blasting 1/3 material amount is directly thrown into refuse dump.
Can selection of land, described in draw bucket shovel operation square position height be 13-14m.
Can selection of land, the spacing T of adjacent saw-tooth shape harbour, determine according to following calculation formula:
T=[33.3-0.56H] L-D;
In formula:
H is for drawing bucket shovel Working bench height;
L establishes step-length for drawing bucket shovel shifting;
D establishes surplus for oppositely moving.
Can selection of land, the edge of described zig-zag harbour is circular arc, and arc diameter is 36.2m.
Can selection of land, described in draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation, comprising:
Bucket shovel is drawn to carry out circulation casting operation between Article 1 activity center line and Article 2 activity center line; Wherein,
Three casting operation seats in the plane are comprised in each work cycle, bucket shovel is drawn first to carry out casting operation in a seat in the plane, then oppositely move along Article 1 activity center line and it is located at No. two seats in the plane and carries out casting operation, vertically move No. three seats in the plane being set on Article 2 activity center line afterwards, after completing the casting operation of a circulation, return along former road by No. three seats in the plane, move the seat in the plane established to next one circulation and proceed casting operation.
Can selection of land, a described seat in the plane is apart from next step 90m to be blasted.
The one that the embodiment of the present invention provides draws bucket shovel zig-zag working berm high-efficiency mining method, it is formed with zig-zag harbour in the edge expansion drawing bucket shovel operation square position near side, refuse dump, draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation; Draw the bucket shovel space geometry form of operation square position and layout by optimization design like this and draw bucket shovel walk to shovel route, effectively reduce without dozer, single bucket excavator, the stripping amount of truck and the repetition workload of Pull shovel handling in transport casting composite technology system, i.e. two casting amounts, simplify drawing bucket shovel walk shovel program, be conducive to balanced operation face production stripping ratio and performance performance efficiency, improve and drawing bucket shovel operation efficiency, reduce stripping cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a wing high step schematic cross-section to be blasted;
Fig. 2 is a wing high step sling blasting schematic cross-section;
Fig. 3 is the preliminary leveling operation schematic diagram of dozer;
Fig. 4 is that schematic diagram is arranged in sawtooth terminal operation square position;
Fig. 5 is the contrast schematic diagram of rectangle square position and sawtooth square position;
Fig. 6 draws walking to shovel route and making industry seat in the plane schematic diagram of adjacent two circulations of bucket shovel.
In figure: 1, high step to be blasted, 2, coal seam, 3, mound, 4, the quick-fried heap of throwing, 5, single bucket excavator, the transport passage of truck, 6, single bucket excavator, truck is smooth and peels off the quick-fried operation square position piling formation, 7, single bucket excavator, the smooth direction of propulsion with peeling off quick-fried heap of truck, 8, Pull shovel handling direction of propulsion, 9, draw bucket shovel circulation casting operation first seat in the plane, 10, draw bucket shovel circulation casting operation the 2nd seat in the plane, 11, draw bucket shovel circulation casting operation the 3rd seat in the plane, 12, draw bucket shovel operation sawtooth harbour, 13, Pull shovel handling Article 1 activity center line, 14, rectangle square position Pull shovel handling Article 2 activity center line, 15, sawtooth square position Pull shovel handling Article 2 activity center line, 16 Article 2 activity center line departure distance (4m), 17, drawing bucket shovel adjacent two circulation walk to produce route, 18, draw the chassis signal of bucket shovel, 19, draw square position inside bucket shovel operation harbour.
Embodiment
Bucket shovel zig-zag working berm high-efficiency mining method is drawn to be described in detail embodiment of the present invention one below in conjunction with accompanying drawing.
Should be clear and definite, described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1 to Fig. 6, one of the present invention draws bucket shovel zig-zag working berm high-efficiency mining embodiment of the method, comprising:
Step 1, entity rock step to top, coal seam carry out pin-point blasting and form quick-fried heap.
In this step, adopt perforation rig to be drilled with big gun hole on the entity height step on top, coal seam in advance, then install explosive and carry out pin-point blasting. The throwing rate of pin-point blasting can reach 33%, and the direct throwing of stripping amount by about 1/3 is in worked-out section.
Step 2, the employing smooth quick-fried heap of dozer, the operation square position of formation single bucket excavator, truck and transport passage.
Step 3, adopt dozer, single bucket excavator, truck integration of operation is smooth and peels off quick-fried heap, formed predetermined height draw bucket shovel operation square position, wherein, draw bucket shovel operation square position near side, refuse dump edge expand be formed with zig-zag harbour.
In the present embodiment, after pin-point blasting is implemented, dozer carries out the section of falling operation on quick-fried heap, this work mainly contains two effects, one is the height reducing the quick-fried heap of pin-point blasting step, for brushing power shovel preparation work place, part stripping amount directly being pushed away and abandon to worked-out section, two is for drawing bucket shovel preparation work square position the section of falling while.
Quick-fried heap top is carried out smooth by dozer, after preparing the working berm of dredger dredge, adjust single bucket excavator (being commonly called as power shovel) carry out brushing operation, by formed after presplitting blasting domatic on the quick-fried amount casting of residue to outside, high bench slope is brushed out pre-ceasma. Dozer carries out at power shovel rear following the trail of operation, and the quick-fried amount poured out by power shovel is abandoned to refuse dump one thruster, and quick-fried heap carries out the part section of falling, and for drawing bucket shovel to do expansion platform.
After presplitting face upper brushes helper is completed by power shovel, through dozer, work place is carried out smooth, when meeting truck transport condition, power shovel is adjusted to and drawing the bucket shovel will one end of operation, the mode of end working face is adopted to carry out the section of falling operation, its stripping amount is abandoned to drawing bucket to shovel standing place near the side of refuse dump by truck row, for drawing bucket shovel to do expansion platform, expands formation zig-zag harbour drawing bucket shovel operation square position near the edge of side, refuse dump.
When drawing bucket shovel expansion platform width to meet its operating condition, truck coordinates the power shovel quick-fried amount of residue to be contact road or the end side contact road of drawing bucket shovel to enter working face, quick-fried for the residue of power shovel operation amount is directly arranged by truck and is abandoned to internal dumping after possessing the current condition of truck by route. Like this, both reduced the workload drawing bucket shovel, and again saved and draw the row of bucket shovel to abandon space.
In the present embodiment, described in draw bucket shovel operation square position height be preferably 13-14m. Operation square position height draws bucket shovel unit casting operation most effective when being 13-14m.
Step 4, draw bucket shovel operation square position near side, refuse dump edge expand formation be no less than a zig-zag harbour time, draw bucket shovel walk row enter ditch to work area.
Drawing bucket shovel, be a kind of large-scale walking excavator, strip mining transformation and extensive hydro project for coal, shale, ferrous metal and nonferrous metallic ores etc. are cut the earth. Main purposes rock is carried to worked-out section, open-pit, hydro project edge when peeling off. The rock of big block can be transported to larger distance by it.
Step 5, draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation.
Step 6, dozer, single bucket excavator, truck advance with the circulation drawing bucket shovel to repeat above-mentioned steps 3 to step 5, until completing the quick-fried heap casting operation in whole unit bar district.
The one that the embodiment of the present invention provides draws bucket shovel zig-zag working berm high-efficiency mining method, it is formed with zig-zag harbour in the edge expansion drawing bucket shovel operation square position near side, refuse dump, draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation; Draw the bucket shovel space geometry form of operation square position and layout by optimization design like this and draw bucket shovel walk to shovel route, effectively reduce without dozer, single bucket excavator, the stripping amount of truck and the repetition workload of Pull shovel handling in transport casting composite technology system, i.e. two casting amounts, simplify drawing bucket shovel walk shovel program, be conducive to balanced operation face production stripping ratio and performance performance efficiency, improve and drawing bucket shovel operation efficiency, reduce stripping cost.
Draw in bucket shovel zig-zag working berm high-efficiency mining embodiment of the method aforementioned, can selection of land, the described entity rock step to top, coal seam carries out pin-point blasting and forms quick-fried heap, comprising: the entity rock step on top, coal seam is carried out pin-point blasting 1/3 material amount is directly thrown into refuse dump.
Aforementioned draw bucket shovel zig-zag working berm high-efficiency mining embodiment of the method in, can selection of land, the spacing T of adjacent saw-tooth shape harbour, determine according to following calculation formula:
T=[33.3-0.56H] L-D;
In formula:
H is for drawing bucket shovel Working bench height;
L establishes step-length for drawing bucket shovel shifting;
D establishes surplus for oppositely moving.
In the present embodiment, adjacent saw-tooth shape harbour spacing is draw the circulation of bucket shovel to advance step pitch.
In the present embodiment, described in draw bucket shovel that the 8750-65 type of Bucyrus company of the U.S. can be adopted to draw bucket shovel, its shiftings sets step-length as 2.3m, oppositely moves and sets surplus as 12.8m, drawing bucket to shovel Working bench height when getting 13m, and calculating circulation advance distance is 47.0m.
Drawing in bucket shovel zig-zag working berm high-efficiency mining embodiment of the method aforementioned, zig-zag harbour size can be determined by material amount, and described zig-zag harbour width can be determined by the demand of the requirement and casting service range of drawing bucket shovel safe casting square position key element.
Referring to Fig. 4 and Fig. 5, as an optional enforcement mode, the edge of described zig-zag harbour is circular arc, and arc diameter is 36.2m, wherein, drawing bucket shovel job safety distance to be 5m, drawing bucket shovel chassis 18 radius to be 10.6m, the current width of dozer be 5m. In the present embodiment, zig-zag code, 12 total lengths are 21m.
Referring to Fig. 4 to Fig. 6, draw in bucket shovel zig-zag working berm high-efficiency mining embodiment of the method aforementioned, can selection of land, described draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation, comprising: draw bucket shovel to carry out circulation casting operation between Article 1 activity center line 13 and Article 2 activity center line 15; Wherein,
Three casting operation seats in the plane are comprised in each work cycle, bucket shovel is drawn first to carry out casting operation in a seat in the plane 9, then oppositely move along Article 1 activity center line 13 and it is located at No. two seats in the plane 10 and carries out casting operation, vertically move No. three seats in the plane 11 being set on Article 2 activity center line 15 afterwards, after completing the casting operation of a circulation, return along former road by No. three seats in the plane 11, move the seat in the plane 9 established to next one circulation and proceed casting operation.
In the present embodiment, the straight line that No. one 9, No. two seats in the plane 10 of wherein every time circulating are connected is called that drawing struggles against and shovels Article 1 activity center 13, and the straight line that circulation No. three seats in the plane 11 are connected every time is called that drawing struggles against and shovels Article 2 activity center line 15.
Aforementioned draw bucket shovel zig-zag working berm high-efficiency mining embodiment of the method in, can selection of land, a described seat in the plane is apart from next step 90m to be blasted.
The embodiment of the present invention is to draw the operating feature of bucket shovel and walks to shovel rule as foundation, by to the optimization drawing bucket shovel Working bench to arrange shape, propose one and draw the bucket shovel novel reoovery method of zig-zag working berm, this reoovery method has following useful effect in concrete enforcement: 1. the design of zig-zag working berm can effectively avoid casting material in the accumulation at coal ditch place, make more material amount by dozer, single bucket excavator, the direct casting of truck enters internal dumping, thus reduce two casting amounts in whole casting process, improve the overall charge stripping efficiency of overcast stripping, 2. at zig-zag working berm and draw bucket shovel to walk to shovel in the design of route, operation seat in the plane, each sawtooth harbour is the casting operation seat in the plane drawing bucket shovel, sawtooth harbour makes to draw operation seat in the plane that bucket shovels on zig-zag harbour more near internal dumping to the outstanding structure in internal dumping direction, and therefore, it is possible to provide bigger interior emptying, less row abandon angle of rotation, 3. between zig-zag working berm adjacent saw-tooth shape harbour longitudinal direction, material is interrupted with natural repose angle to be piled up, therefore draw bucket to shovel front when the operation of harbour position to advance in circulation longitudinal extent without casting material amount, therefore without the need to considering drawing the minimum operating radius restriction of bucket shovel during this seat in the plane operation, can reduce and drawing bucket to shovel the reverse shifting of operation on harbour and establish seat in the plane and paths arrangement, 4. during existing overcast stripping is applied at home, the adjustment of working surface production stripping ratio cannot ensure to draw bucket shovel operation square position to be maintained at optimum height 13-14m usually, and the design of zig-zag working berm can by regulating the geometrical shape (length, width) of zig-zag harbour, not affecting the adjustment realizing production stripping ratio under the prerequisite drawing bucket shovel operation square position height, make the practical application of overcast stripping more flexible.
The above; it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. one kind is drawn bucket shovel zig-zag working berm reoovery method, it is characterised in that, comprising:
Step 1, entity rock step to top, coal seam carry out pin-point blasting and form quick-fried heap;
Step 2, the employing smooth quick-fried heap of dozer, the operation square position of formation single bucket excavator, truck and transport passage;
Step 3, adopt dozer, single bucket excavator, truck integration of operation is smooth and peels off quick-fried heap, formed predetermined height draw bucket shovel operation square position, wherein, draw bucket shovel operation square position near side, refuse dump edge expand be formed with zig-zag harbour;
Step 4, draw bucket shovel operation square position near side, refuse dump edge expand formation be no less than a zig-zag harbour time, draw bucket shovel walk row enter ditch to work area;
Step 5, draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation;
Step 6, dozer, single bucket excavator, truck advance with the circulation drawing bucket shovel to repeat above-mentioned steps 3 to step 5, until completing the quick-fried heap casting operation in whole unit bar district.
2. according to claim 1 draw bucket shovel zig-zag working berm high-efficiency mining method, it is characterized in that, the described entity rock step to top, coal seam carries out pin-point blasting and forms quick-fried heap, comprising: the entity rock step on top, coal seam is carried out pin-point blasting 1/3 material amount is directly thrown into refuse dump.
3. according to claim 1 draw bucket shovel zig-zag working berm high-efficiency mining method, it is characterised in that, described in draw bucket shovel operation square position height be 13-14m.
4. drawing according to claim 1,2 or 3 is struggled against and is shoveled zig-zag working berm high-efficiency mining method, it is characterised in that,
The spacing T of adjacent saw-tooth shape harbour, determines according to following calculation formula:
T=[33.3-0.56H] L-D;
In formula:
H is for drawing bucket shovel Working bench height;
L establishes step-length for drawing bucket shovel shifting;
D establishes surplus for oppositely moving.
5. drawing according to the arbitrary item of Claims 1-4 is struggled against and is shoveled zig-zag working berm high-efficiency mining method, it is characterised in that,
The edge of described zig-zag harbour is circular arc, and arc diameter is 36.2m.
6. drawing according to the arbitrary item of claim 1 to 5 is struggled against and is shoveled zig-zag working berm high-efficiency mining method, it is characterized in that, described draw bucket shovel according to predetermined track route, walk in successively and inside zig-zag harbour, between square position and zig-zag harbour, carry out casting operation, comprising:
Bucket shovel is drawn to carry out circulation casting operation between Article 1 activity center line and Article 2 activity center line; Wherein,
Three casting operation seats in the plane are comprised in each work cycle, bucket shovel is drawn first to carry out casting operation in a seat in the plane, then oppositely move along Article 1 activity center line and it is located at No. two seats in the plane and carries out casting operation, vertically move No. three seats in the plane being set on Article 2 activity center line afterwards, after completing the casting operation of a circulation, return along former road by No. three seats in the plane, move the seat in the plane established to next one circulation and proceed casting operation.
7. according to claim 6 draw bucket shovel zig-zag working berm high-efficiency mining method, it is characterised in that, a described seat in the plane is apart from next step 90m to be blasted.
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| CN201610220607.XA CN105626076B (en) | 2016-04-11 | 2016-04-11 | It is a kind of to draw bucket shovel zigzag working berm high-efficiency mining method |
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| CN106121651A (en) * | 2016-06-21 | 2016-11-16 | 中国矿业大学(北京) | Draw the intelligent less important work method and device of bucket shovel |
| CN106121651B (en) * | 2016-06-21 | 2018-08-14 | 中国矿业大学(北京) | Draw the intelligent less important work method and device of bucket shovel |
| CN106930765A (en) * | 2017-03-16 | 2017-07-07 | 福建省新华都工程有限责任公司 | A kind of change inherently adopts the Ratio in Open-pit Mine dress method that dress operation realizes cost efficiency |
| CN106930765B (en) * | 2017-03-16 | 2019-01-11 | 福建省新华都工程有限责任公司 | The Ratio in Open-pit Mine dress method of dress process realization cost efficiency is inherently adopted in a kind of change |
| CN109944592A (en) * | 2019-03-28 | 2019-06-28 | 辽宁工程技术大学 | Pull shovel handling technique pinpoint blasting step height design method |
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| CN105626076B (en) | 2018-06-19 |
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