CN115095326A - Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process - Google Patents
Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process Download PDFInfo
- Publication number
- CN115095326A CN115095326A CN202210795124.8A CN202210795124A CN115095326A CN 115095326 A CN115095326 A CN 115095326A CN 202210795124 A CN202210795124 A CN 202210795124A CN 115095326 A CN115095326 A CN 115095326A
- Authority
- CN
- China
- Prior art keywords
- dragline
- throwing
- blasting
- height
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 74
- 238000005422 blasting Methods 0.000 claims abstract description 158
- 239000003245 coal Substances 0.000 claims abstract description 143
- 238000004519 manufacturing process Methods 0.000 claims abstract description 42
- 238000005065 mining Methods 0.000 claims description 21
- 239000002360 explosive Substances 0.000 claims description 11
- 238000010415 tidying Methods 0.000 claims description 5
- 238000000611 regression analysis Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Remote Sensing (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for determining the height of a dragline standing platform in a throwing blasting-dragline reverse piling process, which comprises the following steps: step S10: based on the historical data of the shape of the blasting pile of the throwing blasting, a regression equation f (H) of the height of the blasting step of the throwing blasting and the effective throwing rate is established Throwing ) (ii) a Step S20: based on the historical data of the throwing blasting pile form, a regression equation k (H) of the ratio of the falling pile workload of the dragline in the total stripping workload and the height of a standing platform of the dragline is established Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station ) (ii) a Step S30: and (3) determining the height of a standing platform of the dragline which gives full play to the production capacity of the dragline and ensures the continuous and stable production of raw coal according to the formula (1). The invention solves the problems of the prior artThe problem of low operating efficiency of the dragline is caused by unreasonable design of the height of a dragline standing platform in the throwing blasting-dragline reverse piling process in the operation.
Description
Technical Field
The invention relates to the field of coal open-pit mining, in particular to a method for determining the height of a dragline standing platform in a throwing blasting-dragline reverse stacking process.
Background
The technology of the dragline reverse pile is a combined stripping technology which integrates digging, transportation and discharge. The process adopts a large dragline as the reverse-stacking stripping equipment, and directly digs and reversely discharges the stripped objects positioned in the open coal mine stope to an inner soil discharge field. The dragline reverse-stacking process is usually combined with a throwing blasting technology, and through throwing blasting, about 30% of stripping objects of reverse-stacking stripping steps are directly thrown to a goaf of an inner soil discharge field, so that the stripping production efficiency is greatly improved, and the production cost is reduced.
In the open pit coal mine adopting the throwing blasting-dragline reverse piling process in China, firstly, throwing blasting is carried out on a reverse piling stripping step, then, necessary leveling is carried out on the blasting piles under the coordination of a bulldozer through a single bucket-truck process, and finally, the dragline carries out reverse piling stripping operation on a leveled standing platform.
The unreasonable design of parameters of the working face of the dragline dumping operation can increase the auxiliary work amount, reduce the operating efficiency and the production capacity of the dragline and increase the stripping cost. Among the parameters of the working surface of the dragline dumping operation, the height of the dragline standing platform directly influences the width of the dragline standing platform, the cycle time of the dragline dumping operation, the second dumping quantity of the dragline, the auxiliary stripping quantity of a bulldozer or a single bucket excavator, and further influences the production cost and the raw coal production capacity of a strip mine, and is one of more important parameters. Therefore, the reasonable height of the standing platform of the dragline is determined by combining the throwing blasting form, the dragline specification parameters and the opencast mine raw coal production capacity, and the method has important significance for realizing continuous and stable raw coal production, giving full play to the dragline production capacity, reducing the mining cost and the like of opencast mines adopting the throwing blasting-dragline dumping process.
That is to say, the throwing blasting-dragline dumping process in the prior art has the problem of low dragline operation efficiency caused by unreasonable design of the height of a dragline standing platform.
Disclosure of Invention
The invention mainly aims to provide a method for determining the height of a dragline standing platform in a throwing blasting-dragline dumping process, so as to solve the problem of low operating efficiency of the dragline in the throwing blasting-dragline dumping process in the prior art due to unreasonable height design of the dragline standing platform.
In order to achieve the above object, according to an aspect of the present invention, there is provided a method for determining a height of a standing platform of a dragline in a throwing blasting-dragline dumping process, comprising: step S10: based on the historical data of the shape of the blasting pile of the throwing blasting, a regression equation f (H) of the height of the blasting step of the throwing blasting and the effective throwing rate is established Throwing ) (ii) a Step S20: based on the historical data of the throwing blasting pile form, a regression equation k (H) of the ratio of the falling pile workload of the dragline in the total stripping workload and the height of a standing platform of the dragline is established Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station ) (ii) a Step S30: determining the height of a standing platform of the dragline which gives full play to the production capacity of the dragline and ensures the continuous and stable production of raw coal according to the formula (1),
wherein H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; h Station The height of a standing platform of the dragline is m; m is a group of 2 The annual reverse stacking operation amount of the dragline in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l Pouring down The length of the inverted working line is m.
Further, step S10 includes: collecting and tidying the form data of the throwing blasting pile; the effective throwing rate under different throwing blasting step heights is statistically analyzed; establishing a regression equation f (H) of the height of the steps of the throwing blasting and the effective throwing rate by regression analysis of the effective throwing rate under the condition of different heights of the steps of the throwing blasting Throwing )。
Further, step S20 includes: collecting, arranging and throwing blastingForm historical data of the blasting pile; drawing cross section sectional views of operation sections of all links of the throwing blasting-dragline reverse piling system under the conditions of different heights of throwing blasting steps and different heights of dragline standing platforms; the sectional area of each link operation in the throwing blasting-dragline reverse piling system is counted and analyzed under the conditions of different throwing blasting step heights and different dragline standing platform heights; establishing a regression equation k (H) of the ratio of the dump working amount of the dragline to the stripping total working amount and the height of the dragline standing platform according to the sectional areas of all link operations in the throwing blasting-dragline dumping system with different throwing blasting step heights and different dragline standing platform heights Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station )。
Further, between steps S20 and S30, the method further includes: according to a formula (2) and a regression equation k (H) of the ratio of the dump shovel reverse pile operation amount in the total stripping operation amount and the height of a dump shovel standing platform Station ) Determining the cross section S of the dump operation Pulling device ，
S＝S 1 +S 2 +S 3 ＝H Throwing ·b·λ·[1-f(H Throwing )]·[1+g(H Station )]Formula (2);
S pulling device ＝S 2 +S 3 ＝H Throwing ·b·λ·[1-f(H Throwing )]·(1+g(H Station ))·k(H Station ) Formula (3);
the formula (1) is obtained from the formula (3) and the formula (4),
wherein S is the operation sectional area of the throwing blasting-dragline dumping system, and the unit is m 2 ；S 1 Is the auxiliary operation sectional area of the single-bucket-truck process, and the unit is m 2 ；S 2 The cross section area of one-time pile-turning for the bucket-pulling shovel pile-turning operation is m 2 ；S 3 The secondary reverse stacking sectional area of the bucket shovel reverse stacking operation is m 2 ；H Throwing For throwingThe height of the blasting step is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; h Station The height of a standing platform of the dragline is m; s Pulling device The cross section area of the operation of the dump shovel is m 2 ；M 2 The annual reverse stacking operation amount of the draglines in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l Falling down The length of the inverted working line is m.
Further, the process of formula (1) derived from formula (3) and formula (4) further includes: establishing a functional relation between the annual workload of the reverse pile system and the annual production capacity of the raw coal according to the annual push progress T' of the working line,
establishing year reverse piling operation amount of draglines and reverse piling operation sectional area S of draglines in a throwing blasting-dragline reverse piling system according to a formula (5) Pulling device The functional relationship of (a) to (b),
wherein, M Pouring down The annual operation amount of the reverse pile system is m 3 (ii) a S is the operation sectional area of the throwing blasting-dragline dumping system, and the unit is m 2 ；S 2 The cross section area of one-time pile-turning for the bucket-pulling shovel pile-turning operation is m 2 ；S 3 The secondary reverse stacking sectional area of the bucket shovel reverse stacking operation is m 2 ；H Throwing The height of the step of the throwing blasting is m; b is throwingThe width of a mining belt of the step of blasting is thrown, and the unit is m; lambda is the throwing blasting loosening coefficient; m 2 The annual reverse stacking operation amount of the draglines in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l. the Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l. the Falling down The length of the inverted working line is m; t' is the working line annual push progress, and the unit is m/a.
Further, in step S10, a one-dimensional quadratic regression equation f (H) is established Throwing )。
Further, in step S20, a one-dimensional quadratic regression equation k (H) is established Station )。
Further, in step S20, a one-dimensional quadratic regression equation g (H) is established Station )。
By applying the technical scheme of the invention, the method for determining the height of the dragline standing platform in the throwing blasting-dragline reverse piling process comprises the following steps: step S10: based on the historical data of the shape of the blasting pile of the throwing blasting, a regression equation f (H) of the height of the blasting step and the effective throwing rate is established Throwing ) (ii) a Step S20: based on the historical data of the throwing blasting pile form, a regression equation k (H) of the ratio of the falling pile workload of the dragline in the total stripping workload and the height of a standing platform of the dragline is established Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station ) (ii) a Step S30: determining the height of a standing platform of the dragline which gives full play to the production capacity of the dragline and ensures the continuous and stable production of raw coal according to the formula (1),
wherein H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; m 2 For throwing blasting-dragline reverse systemAmount of operation of reverse piling, m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l Pouring down The length of the inverted working line is m.
By analyzing the historical data of the throwing blasting pile form through the step S10, the shape of the pile curve formed after the step throwing blasting can be definitely stripped, the effective throwing rate under different heights of the throwing blasting steps can be counted, the relation between the heights of the throwing blasting steps and the effective throwing rate can be conveniently and definitely determined, and a regression equation f (H) of the heights of the throwing blasting steps and the effective throwing rate is established Throwing ) Thereby predicting the effective throwing rate under different heights of the throwing blasting steps.
After the throwing blasting of the stripping step, a part of the stripping materials are directly thrown into the range of the dumping piles which are dumped and discarded by the draglines in the inner dumping field, and the part is called as effective throwing amount and does not need to be dumped and stripped by the draglines. The ratio of the effective throwing amount to the total throwing blast amount is the effective throwing rate. When the geological conditions and the throwing blasting parameters in the throwing blasting area are not greatly changed, the effective throwing rate of the throwing blasting step is mainly influenced by the height of the throwing blasting step.
By analyzing historical data of the throwing blasting and blasting pile forms in step S20, the influence of the height of the standing platform of the dragline on the falling pile workload of the dragline, the secondary falling pile workload of the dragline, the total stripping workload and the total reverse pile workload can be determined, and a regression equation k (H) of the ratio of the falling pile workload of the dragline in the total stripping workload and the height of the standing platform of the dragline is established Station ) And a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline to the total reverse pile operation amount and the height of a standing platform of the dragline Station ) And forecasting the bucket shovel dumping operation amount, the bucket shovel secondary dumping operation amount, the stripping operation total amount and the dumping operation total amount under different bucket shovel standing platform heights.
The effective throwing amount after the step stripping and throwing blasting does not need to be stripped through a dragline dump, the upper layer of the throwing blasting explosive pile is leveled by a single bucket-truck process under the assistance of a bulldozer, the throwing blasting explosive pile forms a dragline dump operation standing platform after being leveled, the outer side extension part of the standing platform is constructed by a stripping object on the explosive pile in a layering way, the stripping object needs to be reversely piled and discharged to an inner soil discharge field through the dragline shovel for the second time, and the stripping amount of the part is the secondary dumping amount of the dragline.
Through the step S30, the height of the standing platform of the dragline is determined through the formula (1), so that the production capacity of the dragline is fully exerted, the production continuity of raw coal is ensured, the stripping cost of the throwing blasting-dragline dump process system is reduced, and the mining efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 illustrates a schematic diagram of a coal mining and dragline dump operation according to an alternative embodiment of the present invention;
FIG. 2 shows a schematic cross-sectional view of the effective throw volume of the throw blast-dragline dump process system of FIG. 1;
FIG. 3 shows a cross-sectional view of the operating area of the elements of the throwing blasting-dragline dumping system of FIG. 1;
FIG. 4 illustrates a schematic layout of the integrated mining process system of FIG. 1;
fig. 5 shows a sectional view of the blasting pile at a height of the blasting step of 35m of fig. 1;
fig. 6 shows a cross-sectional view of the blasting stack of fig. 1 at a thrown blasting step height of 40 m;
figure 7 shows a cross-sectional view of the blasting heap at the throw blast step height of 45m in figure 1;
figure 8 shows a cross-sectional view of the blasting heap at the throw blast step height of 50m in figure 1;
FIG. 9 shows the thrown blast step height versus effective throw rate of FIG. 1;
FIG. 10 is a cross-sectional view of the operation of the elements of the system of FIG. 1;
FIG. 11 shows the ratio of the workload of each part of the system for dumping at a height of the blasting step of 40m in FIG. 1;
FIG. 12 shows the ratio of the operation amount of each part of the reverse pile system at the height of the throwing blasting step of 45m in FIG. 1;
FIG. 13 shows the ratio of the workload of each part of the system for dumping at a height of the blasting step of 50m in FIG. 1;
fig. 14 shows a flow chart of a method of determining the height of the dragline standing platform for the tossing blasting-dragline dumping process of fig. 1.
Wherein the figures include the following reference numerals:
1. soil discharging and stacking; 2. a dragline; 3. a dragline standing platform; 4. a coal seam roof; 5. an electric shovel; 6. throwing blasting and blasting; 7. a coal conveying channel; 8. discarding loess by a truck; 9. dumping rocks by a truck; 10. a loess layer; 11. an upper rock formation; 12. a lower rock stratum; 13. a coal seam.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problem that the operation efficiency of the dragline is low due to the unreasonable height design of the dragline standing platform in the throwing blasting-dragline reverse piling process in the prior art, the invention provides a method for determining the height of the dragline standing platform in the throwing blasting-dragline reverse piling process.
As shown in fig. 1 to 14, the method for determining the height of the dragline standing platform in the throwing blasting-dragline dumping process includes: step S10: based on the historical data of the 6-form of the throwing blasting explosive pile, a regression equation f (H) of the height of the step of the throwing blasting and the effective throwing rate is established Throwing ) (ii) a Step S20: based on the historical data of the form of the throwing blasting pile 6, a regression equation k (H) of the ratio of the reverse pile operation amount of the dragline in the total stripping operation amount and the height of a standing platform of the dragline is established Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station ) (ii) a Step S30: determining the height of a standing platform of the dragline which gives full play to the production capacity of the dragline and ensures the continuous and stable production of raw coal according to the formula (1),
wherein H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; h Station The height of a standing platform of the dragline is m; m 2 The annual reverse stacking operation amount of the draglines in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The unit is Mt/a for the annual production capacity of raw coal; l Falling down The length of the inverted working line is m.
By analyzing the morphological historical data of the throwing blasting explosive pile 6 in the step S10, the curve shape of the throwing blasting explosive pile 6 formed after the step throwing blasting can be clearly stripped, the effective throwing rates at different heights of the throwing blasting steps can be counted, the relation between the heights of the throwing blasting steps and the effective throwing rates can be conveniently and clearly determined, and a regression equation f (H) of the heights of the throwing blasting steps and the effective throwing rates can be established Throwing ) Thereby to makeAnd predicting the effective throwing rate under different heights of the throwing blasting steps.
It should be noted that, as shown in fig. 2, after the stripping step throwing blast, a part of the stripped matter is thrown directly into the range of the dumping heap 1 dumped by the dragline in the inner dumping field, and this part is called as an effective throwing amount, and does not need to be stripped by the dragline (as shown by the shaded part in fig. 2). The ratio of the effective throwing amount to the total throwing blast amount is the effective throwing rate. When the geological conditions and the throwing blasting parameters in the throwing blasting area are not greatly changed, the effective throwing rate of the throwing blasting step is mainly influenced by the height of the throwing blasting step.
By analyzing the historical data of the form of the throwing blasting explosive pile 6 in the step S20, the influence of the height of the standing platform of the dragline on the falling work amount of the dragline, the secondary falling pile amount of the dragline, the total stripping work amount and the total falling pile work amount can be determined, and a regression equation k (H) of the ratio of the falling work amount of the dragline in the total stripping work amount and the height of the standing platform of the dragline is established Station ) And a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline to the total reverse pile operation amount and the height of a standing platform of the dragline Station ) And predicting the bucket shovel reverse piling operation amount, the bucket shovel secondary reverse piling amount, the stripping operation total amount and the reverse piling operation total amount under different bucket shovel standing platform heights.
The effective throwing amount after the step-stripping throwing blasting does not need to be stripped through a dragline dump, the upper layer of the throwing blasting dump 6 is leveled by a single bucket-truck process under the assistance of a bulldozer, the throwing blasting dump 6 is leveled to form a dragline dump operation standing platform, the outer side extension part of the standing platform is constructed by the layered stripping objects on the throwing blasting dump 6, the partial stripping objects need to be dumped to an inner soil discharge field through dragline secondary dumping, and the partial stripping amount is the dragline secondary dumping amount.
Through the step S30, the height of the dragline standing platform is determined through the formula (1) so as to fully play the production capacity of the dragline, ensure the production continuity of raw coal, reduce the stripping cost of the throwing blasting-dragline dumping process system and improve the mining efficiency.
Specifically, step S10 includes: collecting and tidying the form data of the throwing blasting explosive pile 6; the effective throwing rate under different throwing blasting step heights is statistically analyzed; establishing a regression equation f (H) of the height of the steps of the throwing blasting and the effective throwing rate by regression analysis of the effective throwing rate under the condition of different heights of the steps of the throwing blasting Throwing ). In the process of collecting and sorting the form data of the throwing blasting piles 6, the forms of some closest throwing blasting piles 6 can be selected according to the actual conditions of coal mining, the effective throwing rates under the conditions of different throwing blasting step heights are statistically analyzed, then regression analysis is carried out on the effective throwing rates, and the regression equation f (H) is used for analyzing the effective throwing rates Throwing ) And predicting the effective throwing rate at different heights of the blasting step.
As shown in fig. 3, step S20 includes: collecting and tidying the form historical data of the throwing blasting explosive pile 6; drawing cross section sectional views of operation sections of all links of the throwing blasting-dragline reverse piling system under the conditions of different heights of throwing blasting steps and different heights of dragline standing platforms; the cross section area of each link operation in the throwing blasting-dragline reverse piling system is statistically analyzed under the conditions of different throwing blasting step heights and different dragline standing platform heights; establishing a regression equation k (H) of the ratio of the dump working amount of the dragline to the stripping total working amount and the height of the dragline standing platform according to the sectional areas of all link operations in the throwing blasting-dragline dumping system with different throwing blasting step heights and different dragline standing platform heights Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station )。
In the process of collecting and sorting the form data of the throwing blasting piles 6, the form of the closest throwing blasting piles 6 can be selected according to the actual situation of coal mining, under the condition of a determined height of a throwing blasting step and the height of a dragline standing platform, the sectional area profile of the operation of each link of the throwing blasting-dragline reverse piling system can be obtained, which is convenient for obtaining the sectional area of each link operation in the throwing blasting-dragline reverse piling system, namely the sectional area of the auxiliary operation of a single bucket-truck process, the first reverse piling operation of the dragline, the second reverse piling operation of the dragline, the non-reverse piling operation outside the dragline standing platform 3 and the effective throwing amount of throwing blasting, and further, the proportion of the quantity of the reverse pile operation of the dragline shovel in the total stripping operation and the proportion of the quantity of the secondary reverse pile operation of the dragline shovel in the total reverse pile operation can be conveniently analyzed.
It should be noted that, when drawing the sectional area sectional view of each link operation of the throwing blasting-dragline dump system, it is necessary to scan the historical form view of the throwing blasting dump 6 and then draw the sectional area sectional view of each link operation according to the scanned image.
Under the condition of the height of the throwing blasting step, different heights of the dragline standing platform are selected, the process is repeated, data are counted and analyzed, and a regression equation k (H) of the ratio of the dragline reverse piling workload in the total stripping workload to the height of the dragline standing platform can be established Station ) And the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the regression equation g (H) of the height of the standing platform of the dragline Station ) Therefore, the dump shovel dumping operation amount, the secondary dump amount and the total dumping operation amount of the dump shovel under different heights of the standing platform of the dump shovel are predicted.
And changing the height of the throwing blasting step, and repeating the process to realize the statistical analysis of different heights of the throwing blasting step and the height of the standing platform of the dragline.
It should be noted that the height of the throwing blasting step and the height of the dragline standing platform are not selected at will, but the range is determined according to the historical data of the actual opencast coal mining condition, and the analyzed content is ensured not to be separated from the actual production requirement.
It should be noted that the cross-sectional area S of the single-bucket truck process auxiliary operation 1 Secondary reverse pile sectional area S for shoveling reverse pile operation with pulling bucket 3 Sectional area S of part without turning over outside of platform 3 for standing of dragline 4 Satisfies the following relations:
S 1 ＝k y ·(S 3 +S 4 ) Formula (6);
wherein k is y Compacting after levelling for blasting piles 6And (4) the coefficient.
It should be noted that the effective throwing amount cross-sectional area S of the throwing blast 5 Can be defined by the formula (7),
S 5 ＝H throwing ·b·λ·f(H Throwing ) Equation (7).
Specifically, the method further includes, between steps S20 and S30: according to a formula (2) and a regression equation k (H) of the ratio of the total stripping operation amount of the dragline to the height of a standing platform of the dragline Station ) Determining the cross section S of the dump operation Pulling device ；
S＝S 1 +S 2 +S 3 ＝H Throwing ·b·λ·[1-f(H Throwing )]·[1+g(H Station )]Formula (2);
S pulling device ＝S 2 +S 3 ＝H Throwing ·b·λ·[1-f(H Throwing )]·(1+g(H Station ))·k(H Station ) Formula (3);
the formula (1) is obtained from the formula (3) and the formula (4),
wherein S is the operation sectional area of the throwing blasting-dragline dumping system and the unit is m 2 ；S 1 Is the auxiliary operation sectional area of the single-bucket-truck process, and the unit is m 2 ；S 2 The cross section area of one-time pile-turning for the bucket-pulling shovel pile-turning operation is m 2 ；S 3 The secondary reverse stacking sectional area of the bucket shovel reverse stacking operation is m 2 ；H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; h Station The height of a standing platform of the dragline is m; s. the Pulling device The cross section area of the operation of the reverse pile of the dragline is m 2 ；M 2 The annual reverse stacking operation amount of the draglines in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volumeWeight, unit is t/m 3 ；M Coal (coal) The unit is Mt/a for the annual production capacity of raw coal; l Falling down The length of the inverted working line is m.
The proportion of the quantity of the dump shovel reverse pile operation in the total stripping operation quantity and the regression equation k (H) of the height of the standing platform of the dump shovel Station ) And the operation sectional area of the throwing blasting-dragger dump system can be obtained Pulling device (ii) a The annual reverse stacking operation amount of the dragline in the throwing blasting-dragline reverse stacking system can be obtained by a formula (4), namely the annual reverse stacking operation amount of the dragline in the throwing blasting-dragline reverse stacking system can be correspondingly obtained by the sectional area of the reverse stacking operation of the dragline.
Specifically, the process of obtaining formula (1) from formula (3) and formula (4) further includes: establishing a functional relation between the annual workload of the reverse pile system and the annual production capacity of the raw coal according to the annual push progress T' of the working line,
establishing year reverse piling operation amount of draglines and reverse piling operation sectional area S of draglines in a throwing blasting-dragline reverse piling system according to a formula (5) Pulling device The functional relationship of (a) to (b),
wherein M is Pouring down The annual operation amount of the reverse pile system is m 3 (ii) a S is the operation sectional area of the throwing blasting-dragline dumping system, and the unit is m 2 ；S 2 The cross section area of one-time pile-reversing operation is the drawing bucket, the shovel and the pile-reversing operation, and the unit is m 2 ；S 3 The secondary reverse stacking sectional area of the bucket shovel reverse stacking operation is m 2 ；H Throwing The height of the step of the throwing blasting is m;b is the width of the mining belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; m 2 The annual reverse stacking operation amount of the dragline in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is raw coal volume weight and unit is t/m 3 ；M Coal (coal) The unit is Mt/a for the annual production capacity of raw coal; l Falling down The length of the inverted stacking working line is m; t' is the working line annual push progress, and the unit is m/a.
As shown in fig. 1, in the throwing blasting-dragline dumpage process of the open-pit coal mine, the dragline 2 and the electric shovel 5 are used for discharging blasting materials in the throwing blasting pile 6 to the dumping pile 1, and the produced coal is transported to a raw coal crushing station through a coal transporting channel 7. The coal mining and dragline reverse piling working face adopts tracking type mining arrangement, so that the push progress of a reverse piling system and a coal mining working line is kept consistent, a functional relation between the annual operating quantity of the reverse piling system and the annual production capacity of raw coal in a formula (5) is obtained, and the annual reverse piling operating quantity of the dragline is obtained corresponding to the operational sectional area of the dragline reverse piling.
It should be noted that the working line annual estimated progress T' can be defined by the formula (8),
according to the formula (5), the annual auxiliary workload M of the single-bucket truck can be obtained 1 ，
Specifically, in step S10, a one-dimensional quadratic regression equation f (H) is established Throwing ). Regression equation f (H) Throwing ) The method is a one-dimensional quadratic equation with small form error, and can carry out more effective analysis on the effective throwing rate under different throwing blasting step heights.
Specifically, in step S20, a one-dimensional quadratic regression equation k (H) is established Station )。Regression equation k (H) Station ) The form error of the unitary quadratic equation is small, and the proportion of the dump shovel reverse pile workload in the total stripping workload under different dump shovel standing platform heights can be more effectively analyzed.
Specifically, in step S20, a one-dimensional quadratic regression equation g (H) is established Station ). Regression equation g (H) Station ) The form error of the unitary quadratic equation is small, and the proportion of the secondary reverse pile amount of the dragline under different dragline standing platform heights in the total pile reversing operation amount can be more effectively analyzed.
Taking a certain large opencast coal mine as an example, the raw coal production capacity is designed to be 12.0 Mt/a. The bottom of the mining boundary of the field tends to be 7.8km on average, the inclined width tends to be 5.09km on average, and the area tends to be 40.25km 2 The average depth is 140m, the average thickness of the coal layer 13 which can be mined in the boundary is 28.8m, and the storage amount of the mined coal is 14 hundred million tons.
As shown in fig. 4, the large opencast coal mine adopts a comprehensive mining process, a loess layer 10 and an upper rock layer 11 are stripped by adopting a single-bucket-truck process to form truck waste loess 8 and truck waste rock 9, a lower rock layer 12 with the thickness of about 45m above a coal seam roof 4 is stripped by adopting a pull-bucket shovel-reverse-piling process, and a coal seam 13 is mined by adopting a single-bucket-truck-surface semi-fixed crushing station semi-continuous mining process. Fig. 4 illustrates the constraint relationship between the throwing blasting-dragline back-stacking stripping step and the coal mining step.
In this embodiment, the determination of the height of the dragline standing platform is as follows:
1) and establishing a regression equation of the height of the blasting step and the effective throwing rate. As shown in fig. 5 to 8, typical cross-sectional shapes of the large-scale open-pit coal mine throwing blasting pile 6 are selected, and effective throwing rates under different throwing blasting step heights are counted. Based on the typical profile data of the thrown blasting cartridge 6, a regression function relationship between the effective throwing rate and the height of the step of the thrown blasting is established as shown in fig. 9, to obtain a formula (10),
2) and drawing a section view of the operation quantity of each link of the throwing blasting-dragline reverse piling system. Referring to a typical curve of the throwing blasting pile 6 when the height of the throwing blasting step is 45m, a cross-sectional view of the operation amount of each link in the throwing blasting-dragline dumping process system when the height of the throwing blasting step is 45m and the standing horizontal height of the dragline is 18m is drawn, as shown in fig. 10. According to the principle of equal area, the relationship between the cross-sectional areas of S1 and S3 and S4 is as follows:
S 1 ＝k y ·(S 3 +S 4 ) Formula (6);
in the formula, k y For the compaction factor, 0.8 was taken.
Referring to fig. 10, a cross-sectional view of the operation amount of each link in the throwing blasting-dragline dump process system is respectively drawn under the condition that the height of the dragline standing platform is 11m to 18m when the height of the throwing blasting step is 40m, 45m and 50 m.
3) Analyzing the height and the operation sectional area of the standing platform of the dragline. Based on the drawn section diagrams of the operation amount of each link when the dragline is at different heights of the standing platform, the corresponding sectional area of the operation part of each link can be directly measured from the diagrams, and the operation sectional areas of each link under different heights of the platform of the dragline are counted, as shown in tables 1 to 3.
Under the condition that the height of the throwing blasting step is 40m, the loosening coefficient is 1.36, the effective throwing rate is 0.365, and the compaction rate is 0.8. The working sectional areas of the draglines, the secondary reverse stacking working sectional areas and the working sectional areas of the single-bucket trucks at different horizontal heights of the dragline stand are shown in table 1.
| Vertical level of dragline (m) | Working sectional area (m) of dragline 2 ) | Secondary reverse pile operation sectionArea (m) 2 ) | Working cross-sectional area (m) of single hopper-truck 2 ) |
| 11 | 2235 | 610 | 1302 |
| 12 | 2346 | 630 | 1211 |
| 13 | 2449 | 643 | 1120 |
| 14 | 2527 | 633 | 1035 |
| 15 | 2599 | 617 | 949 |
| 16 | 2659 | 592 | 864 |
| 17 | 2708 | 558 | 782 |
| 18 | 2746 | 515 | 701 |
TABLE 1
Under the condition that the height of a throwing blasting step is 45m, the loosening coefficient is 1.45, the effective throwing rate is 0.378, and the compaction rate is 0.8. The working sectional areas of the draglines, the secondary reverse stacking working sectional areas and the working sectional areas of the single-bucket trucks at different horizontal heights at which the draglines stand are shown in table 2.
| Vertical level of dragline (m) | Working sectional area (m) of dragline 2 ) | Second-time reverse piling operation section area (m) 2 ) | Working cross-sectional area (m) of single hopper-truck 2 ) |
| 11 | 2258 | 651 | 1843 |
| 12 | 2399 | 708 | 1759 |
| 13 | 2553 | 778 | 1675 |
| 14 | 2708 | 851 | 1593 |
| 15 | 2864 | 926 | 1512 |
| 16 | 2906 | 888 | 1432 |
| 17 | 3001 | 903 | 1352 |
| 18 | 3061 | 885 | 1274 |
TABLE 2
Under the condition that the height of the throwing blasting step is 50m, the loosening coefficient is 1.52, the effective throwing rate is 0.39, and the compaction rate is 0.8. The working sectional areas of the draglines at different levels of the dragline stand, the secondary reverse stacking working sectional area, and the single-bucket-truck working sectional area are shown in table 3.
| Vertical horizontal position of dragline (m) | Working sectional area (m) of dragline 2 ) | Second reverse piling working sectional area (m) 2 ) | Working cross-sectional area (m) of single hopper-truck 2 ) |
| 11 | 2248 | 321 | 2013 |
| 12 | 2399 | 367 | 1907 |
| 13 | 2552 | 416 | 1803 |
| 14 | 2707 | 467 | 1699 |
| 15 | 2864 | 522 | 1598 |
| 16 | 3023 | 581 | 1498 |
| 17 | 3183 | 642 | 1399 |
| 18 | 3345 | 707 | 1302 |
TABLE 3
4) And establishing a regression function of the workload of each link of the throwing blasting-dragline reverse piling system and the height of a dragline standing platform. Based on the data in tables 1 to 3, a regression function relationship between the proportion of the workload of each link of the throwing blasting-dragline reverse pile system in the total reverse pile operation amount and the height of a dragline standing platform is established, as shown in fig. 11 to 13.
Under the condition of different heights of the throwing blasting steps, the regression function between the proportion of the reverse pile operation amount of the dragline and the secondary reverse pile operation amount in the total reverse pile operation amount and the height of a standing platform of the dragline is as follows.
When the height of the throwing blasting step is 40m, the regression function relation between the proportion of the dump shovel dumping operation amount in the total stripping operation amount and the height of the stand platform of the dump shovel is as follows:
the regression function relationship between the proportion of the secondary reverse pile amount of the dragline in the total pile-reversing operation amount and the height of the standing platform of the dragline is as follows:
when the height of the throwing blasting step is 45m, the regression function relation of the proportion of the falling work amount of the dragline in the total peeling work amount and the height of the standing platform of the dragline is as follows:
the regression function relationship between the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of the vertical platform of the dragline is as follows:
when the height of the throwing blasting step is 50m, the regression function relation of the proportion of the falling work amount of the dragline in the total peeling work amount and the height of the standing platform of the dragline is as follows:
the regression function relationship between the proportion of the secondary reverse pile amount of the dragline in the total pile-reversing operation amount and the height of the standing platform of the dragline is as follows:
5) and determining the height of the platform for the dragline to stand. The bucket-type dragline for the large open pit coal mine has the production capacity of 1600 ten thousand meters of inverted pile per year 3 A, planned raw coal yield is 3400 ten thousand t/a, the width of a mining belt of a throwing blasting step is 85m, the length of a dumping working line is 1550m, the length of a coal mining working line is 2300m, and the average bulk density of raw coal is 1.47t/m 3 Based on the parameters, the formula (1) is solved, and the reasonable height of the standing platform of the dragline in each digging area can be determined, as shown in table 4.
TABLE 4
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
1. based on the form historical data of the throwing blasting explosive pile 6, a regression function relation between the height of a throwing blasting step and the effective throwing rate, the proportion of the height of a dragline standing platform and the secondary dumping quantity of the dragline in the total dumping operation amount and the proportion of the dragline dumping operation quantity in the total stripping operation amount is established, a dragline standing platform height mathematical model is established, and the reasonable dragline standing platform height is determined so as to fully exert the dragline production capacity.
2. Under the condition of reasonable height of the standing platform of the dragline, the production capacity of the dragline can be fully exerted, the stripping cost of a throwing blasting-dragline dumping process system is reduced, and the continuous and stable production of raw coal is ensured.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for determining the height of a dragline standing platform in a throwing blasting-dragline reverse piling process is characterized by comprising the following steps:
step S10: based on the historical data of the shape of the blasting pile (6), a regression equation f (H) of the height of the blasting step and the effective throwing rate is established Throwing )；
Step S20: based on the historical data of the form of the throwing blasting pile (6), a regression equation k (H) of the ratio of the quantity of the dump work of the dragline to the total quantity of the stripping work and the height of a standing platform of the dragline is established Station ) (ii) a Establishing a regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline in the total reverse pile operation amount and the height of a standing platform of the dragline Station )；
Step S30: determining the height of a standing platform of the dragline which gives full play to the production capacity of the dragline and ensures the continuous and stable production of raw coal according to the formula (1),
wherein H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the coefficient of throwing blasting looseness; h Station The height of a standing platform of the dragline is m; m is a group of 2 For throwing blasting-dragline reverse piling systemUnit is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l. the Coal (coal) The length of a raw coal working line is m; gamma is the unit of t/m and the unit of the unit is the unit weight of raw coal 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l Falling down The length of the inverted pile working line is m.
2. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process according to claim 1, wherein the step S10 comprises:
collecting and tidying the shape data of the throwing blasting pile (6);
statistically analyzing the effective throwing rate under different throwing blasting step heights;
establishing the regression equation f (H) for the height of the steps of the thrown blasting and the effective throwing rate by regression analysis of the effective throwing rate under different conditions of the height of the steps of the thrown blasting Throwing )。
3. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process of claim 2, wherein the step S20 comprises:
collecting the form historical data of the tidying throwing blasting explosive pile (6);
drawing the cross section of the operation section of each link of the throwing blasting-dragline reverse piling system under the conditions of different heights of the throwing blasting steps and different heights of the dragline standing platform;
the sectional area of each link operation in the throwing blasting-dragline reverse piling system under the conditions of different heights of the throwing blasting steps and different heights of the dragline standing platform is statistically analyzed;
establishing the regression equation k (H) of the ratio of the falling and piling workload of the draglines to the total stripping workload and the height of the platform on which the draglines stand according to the sectional areas of the operations of all links in the throwing blasting-dragline falling and piling system with different heights of the throwing blasting steps and different heights of the platform on which the draglines stand Station ) (ii) a Establishment stationThe regression equation g (H) of the proportion of the secondary reverse pile amount of the dragline to the total reverse pile operation amount and the height of the standing platform of the dragline Station )。
4. The method for determining the height of the standing platform of the dragline for the tossing blasting-dragline dumping process of claim 1, further comprising, between steps S20 and S30:
according to a formula (2) and the regression equation k (H) of the ratio of the total stripping operation amount of the dragline to the height of the dragline standing platform Station ) To obtain the formula (3),
S＝S 1 +S 2 +S 3 ＝H throwing ·b·λ·[1-f(H Throwing )]·[1+g(H Station )]Formula (2);
S pulling device ＝S 2 +S 3 ＝H Throwing ·b·λ·[1-f(H Throwing )]·(1+g(H Station ))·k(H Station ) Formula (3);
the formula (1) is obtained from the formula (3) and the formula (4),
wherein S is the operation sectional area of the throwing blasting-dragline dumping system and the unit is m 2 ；S 1 Is the auxiliary operation sectional area of the single-bucket-truck process, and the unit is m 2 ；S 2 The cross section area of one-time pile-reversing operation is the drawing bucket, the shovel and the pile-reversing operation, and the unit is m 2 ；S 3 The secondary reverse stacking sectional area for the pull bucket shoveling reverse stacking operation is m 2 ；H Throwing The height of the step of the throwing blasting is m; b is the width of the digging belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; h Station The height of a standing platform of the dragline is m; s Pulling device The cross section area of the operation of the dump shovel is m 2 ；M 2 The annual reverse stacking operation amount of the dragline in a throwing blasting-dragline reverse stacking system is m 3 ；H Coal (coal) Is averaged by raw coalThickness in m; l Coal (coal) The length of a raw coal working line is m; gamma is the unit of t/m and the unit of the unit is the unit weight of raw coal 3 ；M Coal (coal) The annual production capacity of raw coal is Mt/a; l Falling down The length of the inverted working line is m.
5. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process according to claim 4, wherein the step of obtaining the formula (1) from the formula (3) and the formula (4) further comprises the following steps:
establishing a functional relation between the annual workload of the reverse pile system and the annual production capacity of the raw coal according to the annual push progress T' of the working line,
establishing the annual dumping operation amount of the dragline and the sectional area S of the dumping operation of the dragline in the throwing blasting-dragline dumping system according to a formula (5) Pulling device The functional relationship of (a) to (b),
wherein M is Falling down The annual operation amount of the reverse pile system is m 3 (ii) a S is the operation sectional area of the throwing blasting-dragline dumping system, and the unit is m 2 ；S 2 The cross section area of one-time pile-turning for the bucket-pulling shovel pile-turning operation is m 2 ；S 3 The secondary reverse stacking sectional area for the pull bucket shoveling reverse stacking operation is m 2 ；H Throwing The height of the step of the throwing blasting is m; b is the width of the mining belt of the step of the throwing blasting, and the unit is m; lambda is the throwing blasting loosening coefficient; m 2 System for throwing blasting-dragline reverse pilingThe annual reverse stacking operation amount of the traditional middle dragline is m 3 ；H Coal (coal) Is the average thickness of the raw coal and has the unit of m; l Coal (coal) The length of a raw coal working line is m; gamma is the unit of t/m and the unit of the unit is the unit weight of raw coal 3 ；M Coal (coal) The unit is Mt/a for the annual production capacity of raw coal; l Falling down The length of the inverted working line is m; t' is the working line annual push progress, and the unit is m/a.
6. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process of claim 1, wherein in step S10, a quadratic regression equation f (H) is established Throwing )。
7. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process of claim 1, wherein in step S20, a quadratic regression equation k (H) is established Station )。
8. The method for determining the height of a standing platform of a dragline for a throwing blasting-dragline dumping process of claim 1, wherein in step S20, a quadratic regression equation g (H) is established Station )。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795124.8A CN115095326A (en) | 2022-07-07 | 2022-07-07 | Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795124.8A CN115095326A (en) | 2022-07-07 | 2022-07-07 | Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115095326A true CN115095326A (en) | 2022-09-23 |
Family
ID=83296616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210795124.8A Pending CN115095326A (en) | 2022-07-07 | 2022-07-07 | Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115095326A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977642A (en) * | 2022-10-28 | 2023-04-18 | 国能经济技术研究院有限责任公司 | Double working face reciprocating walking and reverse piling operation method for dragline |
| CN116025357A (en) * | 2022-10-28 | 2023-04-28 | 国能经济技术研究院有限责任公司 | Operation method of temporary connection channel of dragline mining process |
-
2022
- 2022-07-07 CN CN202210795124.8A patent/CN115095326A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977642A (en) * | 2022-10-28 | 2023-04-18 | 国能经济技术研究院有限责任公司 | Double working face reciprocating walking and reverse piling operation method for dragline |
| CN116025357A (en) * | 2022-10-28 | 2023-04-28 | 国能经济技术研究院有限责任公司 | Operation method of temporary connection channel of dragline mining process |
| CN115977642B (en) * | 2022-10-28 | 2023-08-29 | 国能经济技术研究院有限责任公司 | Double working surface back and forth moving and pile-reversing operation method of bucket-pulling shovel |
| CN116025357B (en) * | 2022-10-28 | 2023-09-05 | 国能经济技术研究院有限责任公司 | Operation method of temporary connection channel of dragline mining process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115095326A (en) | Method for determining height of dragline standing platform in throwing blasting-dragline reverse piling process | |
| CN103216238B (en) | A kind of Opencut coal mine mining technique | |
| CN206571487U (en) | A kind of barren rock and cementing layering wedging mining with stowing structure | |
| CN112855162B (en) | Mining method for upper coal seam of composite coal seam strip mine near extraction end slope | |
| CN109931065B (en) | Open pit coal mine throwing blasting-loosening blasting partition mining method | |
| CN109931064B (en) | Independent reverse stacking operation method for dragline of opencast coal mine | |
| CN109944592B (en) | Method for designing height of throwing blasting step in dragline dump process | |
| CN109931095A (en) | A kind of bastard coal underground separation and filling engineering design method on the spot | |
| US8366201B2 (en) | Method for open pit bench mining | |
| CN103388478B (en) | Forming method for transportation road of bucket shovel applied to open pit coal mine | |
| RU2204720C2 (en) | Method of opencast mining of mineral deposits and excavator-hopper transfer point for method embodiment | |
| Babets et al. | Determining conditions of using draglines in single-tier internal dump formation | |
| CN114109485A (en) | Ore chute and crushing system of underground adjacent unloading station | |
| US20200385955A1 (en) | Portable sand plant systems and methods | |
| CN112796759B (en) | Mechanical mining and waste rock filling method for inclined thin vein | |
| CN105971605A (en) | A non-waste mining method for underground mines | |
| CN216617574U (en) | Ore chute and crushing system of underground adjacent unloading station | |
| CA2511162C (en) | Method and apparatus for constructing filter zones in earthfill dams | |
| CN104564139B (en) | Sold stowing system and placement method | |
| CN110905519A (en) | Strip mine dumping method | |
| CN110700837A (en) | Dragline operation method | |
| CN105626076A (en) | High-efficiency mining method of dragline saw-tooth type working bench | |
| CN113326548B (en) | Construction method of downward horizontal layered approach type filling body strength design model | |
| Adamchuk et al. | Research of land-saving schemes of mining the horizontal sedimentary mineral deposits | |
| Cherep et al. | Justification for mining overburden without the use of conveyor transport at the Pivnichnyi open pit of the Pokrovskyi mining and processing enterprise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |