Optimization method for slant-basement inner-dumping-site side slope shapes

An optimization method and technology for dumping sites, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of failing to maximize economic benefits, increasing stripping distance, and not effectively utilizing land resources, etc. problems, to save the cost of open-pit mining and ensure stability

Active Publication Date: 2018-01-19
HUOLINHE OPENCUT COAL IND CORP LTD OF INNER MOGOLIA
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AI Technical Summary

Problems solved by technology

[0003] At present, most open-pit coal mines will conservatively choose to discharge the stripped material to the outer dump when encountering a sloped base during production, which greatly increases the stripping distance, does not effectively use the existing land resources, an...

Method used

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  • Optimization method for slant-basement inner-dumping-site side slope shapes
  • Optimization method for slant-basement inner-dumping-site side slope shapes
  • Optimization method for slant-basement inner-dumping-site side slope shapes

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Embodiment 1

[0039] There is an anticline geological structure in an open-pit mining area, and the inner dump just advances to the top of the anticline axis. The width of the anticline structure area is 1200m, and the direction is SE-NW. Due to the influence of the anticline structure, the drop of the coal seam reaches 270m, but the ground surface and the bedrock surface drop less than 100m. The coal seam transitions from a near-horizontal coal seam to an inclined coal seam. The inclination angle of the coal seam floor is large, resulting in the slope base of the inner dump site being inclined and stable. The performance is greatly affected, and at the same time, due to the increase in the amount of stripping, a larger space for soil discharge needs to be released. figure 2 It is a schematic diagram of the inclined base of the internal dump.

[0040] The current situation of the dump dump in the example open-pit mine has reached the level of 1420, and the specific steps of using the pres...

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Abstract

The invention discloses an optimization method for slant-basement inner-dumping-site side slope shapes, and belongs to the field of opencast working. The optimization method includes the steps that (1) influence factors of the stability of slant-basement inner-dumping-site side slopes and potential landslide modes are qualitatively analyzed; (2) inner-dumping-site side slope rock-soil bodies are subjected to mechanics experimenting, and physical mechanical indexes of the side slope rock-soil bodies are obtained; (3) the safety reserve coefficient K of the slant-basement inner-dumping-site sideslopes is determined; (4) the slant-basement inner-dumping-site side slope shapes with different discharging heights and different flat plate widths are designed, and the optimal side-slope stabilitycoefficient and the maximal discharging space are designed; (5) the obtained optimal side-slope-shape scheme is simulated and checked through FLAC<3D> finite difference numerical simulation softwarewith the strength reduction theory algorithm, and the feasibility of the optimal side-slope shape is further verified. According to the optimization method, the inner-dumping-site stability and continuous development of inner dumping space are guaranteed, a basis is provided for designing of the side slope shapes, and meanwhile a large amount of opencast working cost is saved.

Description

technical field [0001] The invention belongs to the field of open-pit mining, in particular to a method for optimizing the slope form of a dump site in an inclined base. Background technique [0002] In the production process of open-pit coal mines, in order to reduce land occupation and shorten the stripping distance, the stripped materials are directly discharged into the goaf of the open-pit stope, forming an internal dump. The slope of the inner dump site is tall and close to the stripping face, and its stability directly affects whether the open-pit mine can be safely produced. The stability of the slope of the internal dump is not only related to the properties of the discarded materials, the properties of the basement rock and soil mass, and the shape of the slope, but also the shape of the basement is the main factor affecting its stability. If the inclination of the basement is consistent with that of the slope of the inner dump, the slope of the inner dump will be...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘文坊宋子岭范军富胡铁男王向磊于泽浩韩禄
Owner HUOLINHE OPENCUT COAL IND CORP LTD OF INNER MOGOLIA
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