阅读说明：本技术 露天矿开采境界的边坡安全设计方法、装置及存储介质 (Slope safety design method and device for strip mine mining boundary and storage medium ) 是由 罗周全 徐海 秦亚光 于 2019-09-23 设计创作，主要内容包括：本发明涉及一种应用于特大型高陡边坡露天矿开采境界的边坡安全设计方法、装置及存储介质。针对特大型高陡边坡露天矿开采境界的边坡设计中道路系统布置导致的路间边坡变陡引发的安全问题,本发明提出了结合开采境界的路间边坡稳定性综合考虑整体边坡安全的设计方法,建立了整体边坡角、路间边坡角与各边坡结构参数间的关联关系,通过路间边坡的安全稳定性分析方法,实现了基于稳定路间边坡角下的整体边坡安全设计。本发明有利于保障特大型高陡边坡露天矿的开采安全,弥补露天矿开采境界边坡设计中存在的不足,为露天矿山的全面安全设计提供了技术支撑。(The invention relates to a slope safety design method, a device and a storage medium applied to the mining boundary of an oversize high and steep slope strip mine. Aiming at the safety problem caused by the steep slope of the inter-road slope caused by the arrangement of a road system in the slope design of the ultra-large high-steep slope strip mine mining boundary, the invention provides a design method for comprehensively considering the safety of the integral slope in combination with the stability of the inter-road slope of the mining boundary, establishes the incidence relation among the structural parameters of the integral slope angle, the inter-road slope angle and each slope, and realizes the safety design of the integral slope based on the stable inter-road slope angle through a safety stability analysis method of the inter-road slope. The invention is beneficial to ensuring the mining safety of the super-huge high-steep slope strip mine, makes up the defects in the slope design of the mining boundary of the strip mine and provides technical support for the comprehensive safety design of the strip mine.)

1. A slope safety design method for the mining boundary of strip mine is characterized in that the slope safety design method is applied to the ultra-large high-steep slope strip mine and comprises the following steps:

acquiring the geometric constitution of an inter-road slope of a mining boundary, and establishing an association relationship between an inter-road slope angle and a step parameter according to the geometric constitution of the inter-road slope to obtain a first association relationship;

acquiring the geometric constitution of the whole side slope of the mining situation boundary, and establishing an association relation between a whole side slope angle and step parameters and transportation road parameters according to the geometric constitution of the whole side slope to obtain a second association relation;

constructing an incidence relation between the whole side slope angle and the side slope angle between roads and the transport road parameter according to the first incidence relation and the second incidence relation to obtain a third incidence relation;

and determining the target integral side slope angle according to the third correlation.

2. The method of claim 1, wherein the step parameter comprises: step height, platform width and step slope angle.

3. The method of claim 2, further comprising:

acquiring step superexplosion parameters, wherein the step superexplosion parameters comprise fracture shear strength values, fracture directions, fracture lengths and statistical intervals of joint group data of unit mapping graphs;

acquiring the probability that the superdetonation distance is smaller than a preset superdetonation threshold value based on preset software and the step superdetonation parameters;

calculating the target superblast distance according to the probability that the superblast distance is smaller than a preset superblast threshold value;

and calculating an effective step slope angle according to the target superdetonation distance.

4. The method of claim 3, further comprising:

obtaining a damage mode of the road side slope;

determining the stability of the road side slope according to the damage mode of the road side slope;

based on the preset software and the step superexplosion parameters, the probability that the obtained superexplosion distance is smaller than the preset superexplosion threshold value is as follows:

and acquiring the probability that the superexplosion distance is smaller than a preset superexplosion threshold value based on the stability of the road slope, the step superexplosion parameters and the preset software.

5. The method of claim 4, further comprising:

acquiring a safe road boundary slope angle according to the superexplosive calculation of the road boundary corner steps;

judging whether the road side slope angle is larger than the safe road side slope angle;

and determining the target integral side slope angle as follows according to the third correlation: if the road side slope angle is larger than the safety road side slope angle, calculating the whole side slope angle according to the third correlation;

and if the road side slope angle is smaller than the safety road side slope angle, acquiring the whole side slope angle according to the distribution condition of the road side slope.

6. A slope safety design device for strip mine mining boundaries is characterized by being applied to oversized high-steep slope strip mines and comprising: the device comprises an acquisition module and a processing module;

the acquisition module is used for acquiring the geometric constitution of the mining boundary road-to-road slope and the geometric constitution of the mining boundary integral slope, and sending the acquired geometric constitution of the road-to-road slope and the geometric constitution of the integral slope to the processing module;

the processing module is used for receiving the geometric constitution of the road side slope and the geometric constitution of the whole side slope which are sent by the obtaining module, and establishing an association relationship between a road side slope angle and a step parameter according to the geometric constitution of the road side slope to obtain a first association relationship; establishing an association relation between an integral side slope angle and step parameters and between the integral side slope angle and transportation road parameters according to the geometric composition of the integral side slope to obtain a second association relation; the second association relation is used for establishing the association relation between the whole side slope angle and the side slope angle between roads according to the first association relation and the second association relation to obtain a third association relation; and the method is also used for determining the target integral side slope angle according to the third correlation.

7. The apparatus of claim 6, wherein the step parameters comprise: step height, platform width and step slope angle.

8. The apparatus of claim 7, wherein the obtaining module is further configured to obtain a step superknock parameter, where the step superknock parameter includes a fracture shear strength value, a fracture azimuth, a fracture length, and a statistical interval of joint data of the unit map; the step superexplosion processing module is also used for acquiring the probability that the superexplosion distance is smaller than a preset superexplosion threshold value based on preset software and the step superexplosion parameters, and sending the probability that the superexplosion distance is smaller than the preset superexplosion threshold value to the processing module;

the processing module is further configured to receive the probability that the superdetonation distance sent by the obtaining module is smaller than a preset superdetonation threshold, and calculate a target superdetonation distance according to the probability that the superdetonation distance is smaller than the preset superdetonation threshold; and calculating an effective step slope angle according to the target superdetonation distance.

9. The device according to claim 8, wherein the obtaining module is further configured to obtain a failure mode of the inter-road slope, and send the failure mode to the processing module;

and the processing module is further used for receiving the damage mode and determining the stability of the road slope according to the damage mode.

10. A storage medium comprising a memory for storing a computer program and a processor for executing the computer program to implement the method of highwall safety design in a strip mining environment of any of claims 1-5.

Technical Field

The invention belongs to the technical field of slope design, and particularly relates to a slope safety design method, a device and a storage medium applied to the mining boundary of an oversize high and steep slope strip mine.

Background

The wide and the poor are the main characteristics of mineral resources in China, the national resource strategy is gradually shifted to the western plateau, high and cold or desert areas with rare smoke, and the large-scale, intelligent and low-cost operation of equipment is the development direction of future resource exploitation. Mining in open-pit mines is undoubtedly the most economically feasible resource recovery method for large and thick lean mineral deposits buried shallowly. In order to adapt to the development trend of mineral resources in China, the open-pit mines with the ore production scale of more than 1500 ten thousand tons/year or the ore and rock scale of 6000 ten thousand tons/year and more are clearly defined in the metallurgical mine mining design specifications (GB50830-2013) as the super-large open-pit mines.

The super-huge high-steep slope open-pit mine has the characteristics of large production scale, high and steep slope, large-scale matched mining and selecting equipment and facilities and the like, and generates a new problem different from the design of the slope in the traditional mining field. At present, the analysis theory and method for the stability of the strip mine slope at home and abroad are relatively mature, and the formed stability analysis method comprises an engineering geological analysis method, a limit balance analysis method, a numerical analysis method, a reliability analysis method and the like. However, the analysis of the existing research results can easily find that almost all strip mine slope stability analysis is based on the safety consideration of the whole slope angle of the mine, and the influence of the inter-road slope stability of the mining boundary after the design of a road transportation system on the whole slope stability is neglected. For the ultra-large high and steep slope strip mine, when designing the mining field of the strip mine, the number of the passing roads in each area is different according to the arrangement of the road transportation system in the field and the requirement of transportation equipment on the width of the roads, under the condition of ensuring the stability of the whole and finishing the slope angle, the inter-road slope angle is higher than the whole slope angle due to the influence of the width of the transportation roads, and the more the number of the passing roads is, the steeper the inter-road slope angle is. Therefore, in order to ensure the safety of the side slope in mining, the mining safety of the whole side slope needs to be comprehensively considered in combination with the side slope between roads.

Disclosure of Invention

The invention provides a slope safety design method, a device and a storage medium for strip mine mining boundaries, aiming at solving the defects of the existing method in the slope design application of an oversize high and steep slope strip mine and realizing the safety optimization design of the slope of the mining boundaries.

The technical scheme provided by the invention is as follows:

on one hand, the slope safety design method of the open-pit mining boundary is applied to the oversized high and steep slope open-pit mine and comprises the following steps:

acquiring the geometric constitution of an inter-road slope of a mining boundary, and establishing an association relationship between an inter-road slope angle and a step parameter according to the geometric constitution of the inter-road slope to obtain a first association relationship;

acquiring the geometric constitution of the whole side slope of the mining situation boundary, and establishing an association relation between a whole side slope angle and step parameters and transportation road parameters according to the geometric constitution of the whole side slope to obtain a second association relation;

constructing an incidence relation between the whole side slope angle and the side slope angle between roads and the transport road parameter according to the first incidence relation and the second incidence relation to obtain a third incidence relation;

and determining the target integral side slope angle according to the third correlation.

Further optionally, the step parameter includes: step height, platform width and step slope angle.

Further optionally, the method further comprises:

acquiring step superexplosion parameters, wherein the step superexplosion parameters comprise fracture shear strength values, fracture directions, fracture lengths and statistical intervals of joint group data of unit mapping graphs;

acquiring the probability that the superdetonation distance is smaller than a preset superdetonation threshold value based on preset software and the step superdetonation parameters;

calculating the target superblast distance according to the probability that the superblast distance is smaller than a preset superblast threshold value;

and calculating an effective step slope angle according to the target superdetonation distance.

Further optionally, the method further comprises:

obtaining a damage mode of the road side slope;

determining the stability of the road side slope according to the damage mode of the road side slope;

based on the preset software and the step superexplosion parameters, the probability that the obtained superexplosion distance is smaller than the preset superexplosion threshold value is as follows:

and acquiring the probability that the superexplosion distance is smaller than a preset superexplosion threshold value based on the stability of the road slope, the step superexplosion parameters and the preset software.

Further optionally, the method further comprises:

acquiring a safe road boundary slope angle according to the superexplosive calculation of the road boundary corner steps;

judging whether the road side slope angle is larger than the safe road side slope angle;

and determining the target integral side slope angle as follows according to the third correlation: if the road side slope angle is larger than the safety road side slope angle, calculating the whole side slope angle according to the third correlation;

and if the road side slope angle is smaller than the safety road side slope angle, acquiring the whole side slope angle according to the distribution condition of the road side slope.

In another aspect, a slope safety design apparatus for a strip mine mining boundary, applied to an oversized high and steep slope strip mine, comprises: the device comprises an acquisition module and a processing module;

the acquisition module is used for acquiring the geometric constitution of the mining boundary road-to-road slope and the geometric constitution of the mining boundary integral slope, and sending the acquired geometric constitution of the road-to-road slope and the geometric constitution of the integral slope to the processing module;

the processing module is used for receiving the geometric constitution of the road side slope and the geometric constitution of the whole side slope which are sent by the obtaining module, and establishing an association relationship between a road side slope angle and a step parameter according to the geometric constitution of the road side slope to obtain a first association relationship; establishing an association relation between an integral side slope angle and step parameters and between the integral side slope angle and transportation road parameters according to the geometric composition of the integral side slope to obtain a second association relation; the second association relation is used for establishing the association relation between the whole side slope angle and the side slope angle between roads according to the first association relation and the second association relation to obtain a third association relation; and the method is also used for determining the target integral side slope angle according to the third correlation.

Further optionally, the step parameter includes: step height, platform width and step slope angle.

Further optionally, the obtaining module is further configured to obtain a step superexplosion parameter, where the step superexplosion parameter includes a fracture shear strength value, a fracture azimuth, a fracture length, and a statistical interval of joint group data of the unit mapping map; the step superexplosion processing module is also used for acquiring the probability that the superexplosion distance is smaller than a preset superexplosion threshold value based on preset software and the step superexplosion parameters, and sending the probability that the superexplosion distance is smaller than the preset superexplosion threshold value to the processing module;

the processing module is further configured to receive the probability that the superdetonation distance sent by the obtaining module is smaller than a preset superdetonation threshold, and calculate a target superdetonation distance according to the probability that the superdetonation distance is smaller than the preset superdetonation threshold; and calculating an effective step slope angle according to the target superdetonation distance.

Further optionally, the obtaining module is further configured to obtain a failure mode of the inter-road slope, and send the failure mode to the processing module;

and the processing module is further used for receiving the damage mode and determining the stability of the road slope according to the damage mode.

In yet another aspect, a storage medium includes a memory for storing a computer program and a processor for executing the computer program to implement the highwall design method of a surface mining environment of any of the above.

The slope safety design method, device and storage medium for the mining boundary of the strip mine, provided by the embodiment of the invention, comprise the steps of obtaining the geometric constitution of the side slope between roads of the mining boundary, and establishing the incidence relation between the side slope angle between the roads and the step parameter according to the geometric constitution of the side slope between the roads to obtain a first incidence relation; acquiring the geometric constitution of the whole side slope of the mining situation boundary, and establishing an association relation between the whole side slope angle and step parameters and transportation road parameters according to the geometric constitution of the whole side slope to obtain a second association relation; according to the first incidence relation and the second incidence relation, constructing incidence relations among the whole side slope angle, the side slope angle between roads and the transport road parameters to obtain a third incidence relation; and determining the target integral side slope angle according to the third correlation. When the target overall slope angle is designed, the influence of the mining boundary inter-road slope stability after the design of the road transportation system is considered, on the overall slope stability, the incidence relation among the overall slope angle, the inter-road slope angle and each slope structure parameter is established, and the overall slope design based on the inter-road slope angle is realized through a safety and stability analysis method of the inter-road slope. The method is beneficial to ensuring the mining safety of the super-huge high-steep slope strip mine, makes up the defects in the slope design of the mining boundary of the strip mine, reduces the potential safety hazard in the existing slope design method, and provides technical support for the comprehensive safety design of the strip mine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flow chart of a slope safety design method for a strip mine mining boundary according to an embodiment of the present invention;

FIG. 2 is a schematic plan view of a local steep inter-road slope within a certain boundary;

FIG. 3 is a schematic cross-sectional view of a boundary slope A-A;

FIG. 4 is a schematic diagram of the geometrical relationship between the road side slope angle, the step slope angle, the platform width and the step height in the embodiment of the present invention;

FIG. 5 is a schematic view showing the change of irregularity of the step crest line and the step slope surface angle;

FIG. 6 is a schematic diagram of superknock definition;

FIG. 7 is a pie chart of a partition design;

FIG. 8 is a graph of step slope angle probability distribution;

FIG. 9 is an inter-road slope angle distribution based on platform reliability;

FIG. 10 is a typical failure mode;

fig. 11 is a schematic structural diagram of a slope safety design apparatus for a strip mine mining environment according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a storage medium according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.