CN114493016A - Explosive pile form prediction method and system and electronic equipment - Google Patents

Explosive pile form prediction method and system and electronic equipment Download PDF

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CN114493016A
CN114493016A CN202210107886.4A CN202210107886A CN114493016A CN 114493016 A CN114493016 A CN 114493016A CN 202210107886 A CN202210107886 A CN 202210107886A CN 114493016 A CN114493016 A CN 114493016A
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blasting
determining
pile
parameters
key point
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杨军
荣凯
李立杰
毛市龙
邹宗山
杨靖宇
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Beijing Institute of Technology BIT
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Abstract

The invention provides a method, a system and electronic equipment for predicting a blasting form, and relates to the technical field of engineering blasting. The method has the advantages that the blasting effect is accurately and efficiently predicted, the blasting pile shape, the forward impact distance and the loosening coefficient of the open bench blasting area can be rapidly obtained, so that the blasting design parameters can be reasonably corrected and optimized, the purposes of improving the blasting effect and improving the production efficiency are achieved, and the problems of low precision, poor usability and the like in the prior art are solved.

Description

Explosive pile form prediction method and system and electronic equipment
Technical Field
The invention relates to the technical field of engineering blasting, in particular to a method and a system for predicting a blasting pile form and electronic equipment.
Background
The open bench blasting is mainly used for construction engineering in scenes such as mining, roadbed construction of highways and railways, water conservancy and hydropower construction and other earth and rockwork foundation excavation. In the open bench blasting process, not only the blasting quality but also the blasting form formed after blasting need to be considered. The blasting effect can be evaluated from the perspective of the shovel loading equipment by observing and analyzing various data indexes of the blasting pile form. In an actual scene, two data indexes, namely the height of explosive pile and the loosening coefficient, have great influence on aspects such as shoveling and loading, transportation efficiency and mine economic benefit in a subsequent production link. Therefore, the blasting pile form is accurately predicted, the optimization of related parameters in the blasting process is facilitated, and the blasting quality and the shovel loading efficiency are improved.
Because the blasting form is influenced by a plurality of blasting design parameters, the current mainstream method for predicting the blasting form mainly comprises a ballistic theory, a neural network model and the like. But the prediction result of the ballistic theory is not accurate enough; the neural network model needs a large amount of sample libraries in the prediction process, and the training process of the neural network model is complex and poor in usability.
Disclosure of Invention
In view of the above, the present invention provides a method, a system and an electronic device for predicting a blasting form, where the method can rapidly process blasting parameters and drilling information of a blasting area, rapidly obtain a two-dimensional blasting profile curve of a cross section according to characteristics of the drilling parameters, and automatically generate a three-dimensional blasting form. The method has accurate prediction and high efficiency, can quickly obtain the blasting pile shape, the forward impact distance and the loosening coefficient of the open bench blasting area so as to reasonably correct and optimize the blasting design parameters, and solves the problems of low precision and poor usability in the prior art.
In a first aspect, an embodiment of the present invention provides a method for predicting a pile-bursting shape, where the method includes the following steps:
acquiring the blasting area range and the geological condition parameters of the open bench, and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters;
determining key points of a plurality of profile cross-sectional lines in the blasting stack in a cross section of a blasting area by using blasting parameters and drilling information;
connecting key points of profile lines of each profile to generate a two-dimensional profile curve of a vertical section of the blasting pile;
and generating a three-dimensional surface profile of the blasting pile by using the two-dimensional profile curves corresponding to the cross sections in the blasting pile, and determining a form prediction result of the blasting pile according to the characteristics of the three-dimensional surface profile.
In some embodiments, the step of obtaining the blasting area range and the geological condition parameters of the open bench and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters comprises:
determining the blasting area range of the open bench according to the topographic map of the blasting area;
acquiring rock mass data of the open bench in the blasting area range, and determining blasting parameters of the open bench according to the rock mass data; wherein, rock mass data includes at least: step height, density of rock and Pouleian coefficient; the blasting parameters at least include: hole distribution information, charging information and detonating network information;
and determining a blast hole arrangement result by using the blasting parameters, and determining the blast hole arrangement result as drilling information.
In some embodiments, the step of determining key points of a plurality of profile cross-sectional lines in a blast stack in a cross-section of a blast zone using blast parameters and drilling information comprises:
acquiring the corresponding position of a drill hole in the cross section of the blasting area;
determining at least five key point positions of a profile line by using blasting parameters and drilling information; wherein the first key point position is a starting point position close to the rear boundary line of the blasting area; the second key point position is the lowest point of the profile of the blasting pile; the third key point position is the highest point of the profile of the blasting pile; the fourth key point position is an outline pile-blasting inflection point close to a crest line of the blasting area; the fifth key point is the intersection point of the blasting pile and the step ground disk surface.
In some embodiments, the determining of the second keypoint location comprises:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent according to the arrangement number of blast holes in the drilling information;
calculating the depth of a pull channel of the blasting pile at the position of the rear row blast hole of the cross section of the blasting area by using the coordinates, the row spacing, the row number and the rear row blasting delay parameters of the rear row blast hole contained in the blasting parameters;
determining a second key point position P according to the depth value of the trench2The coordinates of (a).
In some embodiments, the determining of the first keypoint location comprises:
at the moment of determining the second key point position P2Then, a projected point P of a top slope line of the upper surface of the open-air step in the cross section of the blasting area is obtainedfuAnd a slope bottom line projection point P of the lower surface of the open-air stepfd；
Determining a top slope line projection point PfuProjection point P to bottom line of slopefdDirection vector dir ofup；
Along the direction vector dirupProjecting the rear edge line of the upper surface of the open-air step to a point V0Projection point P projected into lower surface of open bench1dPerforming the following steps;
at the second key point P2Guiding rays to the back of the explosion area at the angle of repose, and projecting points V on the back edge of the upper surface of the open-air steps0Projected point P in the lower surface of open bench1dDetermine a first key point location P on the intersection line1。
In some embodiments, the determining of the third key point location includes:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent of each blast hole according to the arrangement number of the blast holes in the drilling information;
calculating the highest point of the profile of the blasting pile at the position of the middle row of blasting holes on the cross section of the blasting area by using the coordinates, the row distance, the row number, the rock Pythium coefficient, the step height and the middle row of blasting delay parameters of the middle row of blasting holes contained in the blasting parameters;
and determining the coordinates of the third key point according to the highest point of the contour.
In some embodiments, the determining of the fourth keypoint location includes:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent of each blast hole according to the arrangement number of the blast holes in the drilling information;
determining the front end inflection point of the blasting pile outside the slope top line of the blasting area by utilizing the row distance, the row number, the rock Pouler coefficient, the step height and the front row detonation delay parameters of the front row detonation holes contained in the blasting parameters;
and determining the coordinates of the fourth key point position according to the front-end inflection point.
In some embodiments, the determining of the fifth keypoint location includes:
calculating the blasting square amount and the forward stroke distance generated during blasting by using the coordinates, the row distance, the row number, the rock Pouler coefficient, the step height and the front row blasting delay parameters of each row of blast holes contained in the blasting parameters;
and determining the slope surface of the blasting pile by using the blasting square amount and the forward stroke distance, and determining the coordinate of the fifth key point location according to the slope surface angle of the blasting pile and the horizontal direction and the coordinate of the fourth key point location.
In a second aspect, an embodiment of the present invention provides a system for predicting a form of a burst stack, where the system includes:
the initialization module is used for acquiring the blasting area range and the geological condition parameters of the open bench and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters;
the key point generating module is used for determining key points of a plurality of profile transverse section lines in the blasting area in the transverse section of the blasting area by using the blasting parameters and the drilling information;
the contour curve generation module is used for connecting key points of a contour sectional line and generating a vertical section two-dimensional contour curve of the blasting pile;
and the three-dimensional contour prediction module is used for generating a three-dimensional surface contour of the blasting pile by using the two-dimensional contour curves corresponding to the cross sections in the blasting pile and determining a form prediction result of the blasting pile according to the characteristics of the three-dimensional surface contour.
In a third aspect, an embodiment of the present invention provides an electronic device, including: a processor and a storage device; the storage device has stored thereon a computer program which, when executed by the processor, performs the steps of the shot pattern prediction method as provided in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the shot shape prediction method provided in the first aspect.
The embodiment of the invention has the following beneficial effects: the embodiment of the invention provides a method, a system and electronic equipment for predicting a blasting form, wherein the method comprises the steps of firstly determining blasting parameters and drilling information of an open bench according to an acquired blasting area range and geological condition parameters; determining key points of a plurality of profile cross-sectional lines in the blasting area in the cross section of the blasting area by using the blasting parameters and the drilling information; generating a two-dimensional profile curve of a longitudinal section of the blasting pile by connecting key points of profile cross lines; and finally, generating a three-dimensional surface profile of the blasting pile by using the two-dimensional profile curves corresponding to the cross sections in the blasting pile, and determining a form prediction result of the blasting pile according to the characteristics of the three-dimensional surface profile. The method can rapidly process the blasting parameters and the drilling information of the blasting area, rapidly obtain the two-dimensional blasting contour curve of the cross section according to the drilling and the blasting parameters, and automatically generate the three-dimensional blasting form. The method has accurate prediction and high efficiency, can quickly obtain the blasting pile shape, the forward impact distance and the loosening coefficient of the open bench blasting area so as to reasonably correct blasting design parameters and optimize blasting parameters, and solves the problems of low precision and poor usability in the prior art.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a method for predicting a burst mode according to an embodiment of the present invention;
fig. 2 is a flowchart of step S101 in a method for predicting a pile-bursting shape according to an embodiment of the present invention;
fig. 3 is a flowchart of a process of determining a second key point location in the method for predicting a burst mode according to the embodiment of the present invention;
fig. 4 is a flowchart of a process of determining a first key point location in a method for predicting a burst mode according to an embodiment of the present invention;
fig. 5 is a flowchart of a process for determining a third key point in the method for predicting a bursting configuration according to the embodiment of the present invention;
fig. 6 is a flowchart of a process of determining a fourth key point in the method for predicting a burst mode according to the embodiment of the present invention;
fig. 7 is a flowchart of a process of determining a fifth key point location in the method for predicting a burst mode according to the embodiment of the present invention;
fig. 8 is a schematic structural diagram of a location of a blast hole in a method for predicting a form of a blasting pile according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a two-dimensional profile curve in the method for predicting a bursting configuration according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of a three-dimensional detonation surface profile in the detonation shape prediction method according to the embodiment of the present invention;
fig. 11 is a schematic structural diagram of a shot form prediction system according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Icon:
1110 — an initialization module; 1120-Key Point Generation Module; 1130-profile curve generation module; 1140-a three-dimensional contour prediction module;
101-a processor; 102-a memory; 103-a bus; 104-communication interface.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, 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.
The open bench blasting is mainly used for construction engineering of scenes such as mining, roadbed construction of highways and railways, water conservancy and hydropower construction and other earth and rockwork foundation excavation. In the open bench blasting process, not only the blasting effect but also the blasting pile form formed after blasting need to be considered. The blasting effect can be evaluated from the perspective of the shovel loading equipment by observing and analyzing various data indexes of the blasting pile form. In an actual scene, two data indexes of the height and the width of the blasting pile have great influence on aspects such as shoveling and loading, transportation efficiency, mine economic benefit and the like in a subsequent production link. Therefore, the blasting pile form is accurately predicted, optimization of relevant parameters in the blasting process is facilitated, and the blasting quality and the shoveling efficiency are improved.
Because the blasting form is influenced by a plurality of blasting design parameters, the current mainstream blasting form prediction method mainly comprises the modes of a ballistic theory, a neural network model and the like. But the prediction result of the ballistic theory is not accurate enough; the neural network model needs a large amount of sample libraries in the prediction process, and the training process of the neural network model is complex and poor in usability.
In order to solve the problems, the invention provides a method, a system and electronic equipment for predicting a blasting form, wherein the method can be used for rapidly processing blasting parameters and drilling information of a blasting area, rapidly obtaining a two-dimensional blasting contour curve of a cross section according to row number characteristics, and automatically generating a three-dimensional blasting form. The method has accurate prediction and high efficiency, can quickly obtain the blasting pile shape, the forward impact distance and the loosening coefficient of the open bench blasting area so as to reasonably correct blasting design parameters and optimize blasting parameters, and solves the problems of low precision and poor usability in the prior art.
To facilitate understanding of the present embodiment, first, a detailed description is given of a method for predicting a burst mode disclosed in the embodiment of the present invention, where a flowchart of the method is shown in fig. 1, and the method includes the following steps:
and S101, acquiring the blasting area range and the geological condition parameters of the open bench, and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters.
The blasting area of the open bench at least comprises a free surface, blasting parameters in an actual scene have close relation with geological conditions of the blasting area, and the blasting parameters need to consider at least two types of data including rock mass information and blast hole charging information in the required blasting area.
In some embodiments, the step is as shown in fig. 2, comprising:
and step S21, determining the blasting area range of the open bench according to the topographic map of the blasting area.
And finally determining the blasting area of the open bench and the corresponding blasting range thereof according to the geological conditions of the open bench, the mining or engineering excavation plan. The blasting area is obtained by carrying out the processes of field data acquisition, drawing and the like on the open bench to be blasted, the blasting area is a wide area, and the actual blasting range is one part selected from the blasting area according to the mining or engineering excavation requirements.
Step S22, acquiring rock mass data of the open bench in the blasting area range, and determining blasting parameters of the open bench according to the rock mass data; wherein, rock mass data includes at least: step height, density of rock and Pouleian coefficient; the blasting parameters at least include: hole distribution information, charging information and detonation network information.
Specifically, the blasting parameters mainly comprise rock mass information, blast hole charging information, drilling machine information, detonation network information and the like. The rock mass information mainly comprises: step height, rock density, Pythium coefficient and other data; the drilling machine information mainly comprises: the type of the drilling machine, the diameter of a drill bit, the diameter of a drilled hole and the like; the charging information mainly comprises: explosive property parameters, charging density, weight and the like; the information of the detonating network mainly comprises: hole distribution mode, blasting type and the like.
And step S23, determining a blast hole arrangement result by using the blasting parameters, and determining a final blast hole arrangement result as drilling information.
The drilling information mainly includes the position parameters of the blast holes, i.e., the data of the rows, the columns, the row spacing, the hole spacing, the position coordinates of the blast holes, the serial numbers of the blast holes and the like deployed in the blasting range. The drilling information can be obtained by inputting the blasting range and the blasting parameters in the corresponding setting page and can also be obtained by importing field actual measurement drilling acceptance data.
And S102, determining key points of a plurality of contour transverse section lines in the blasting area in the transverse section of the blasting area by using the blasting parameters and the drilling information.
Starting from the drilling position of each cross section, acquiring corresponding key points in each cross section according to blasting parameters, wherein the key points can measure key characteristics after blasting, such as: the characteristic points of the cross section such as the highest point, the lowest point, the inflection point, the ground intersection point and the like after blasting can be used as key points, and the blasting shape section of each cross section is measured according to the key points.
The key points are closely related to blasting parameters and drilling information, and the number of the key points is as small as possible on the premise that a profile curve can be represented. Thus, in some embodiments, after obtaining the blasting-zone cross-section, at least five key points of the profile line are determined using the blasting parameters and the drilling information; wherein the first key point position is a starting point position close to the rear boundary line of the blasting area; the second key point position is the lowest point of the profile of the blasting pile; the third key point position is the highest point of the profile of the blasting pile; the fourth key point position is an outline pile-blasting inflection point close to a crest line of the blasting area; the fifth key point is the intersection point of the blasting pile and the surface of the step bottom plate. Through the five key point positions, a cross section two-dimensional profile curve of the blasting pile can be obtained.
And S103, connecting key points of each profile section line to generate a two-dimensional profile curve of the cross section of the blasting pile.
In the process of generating the two-dimensional profile curve of the cross section of the blasting pile, the key points of the profile line are connected smoothly in sequence. Specifically, the key points can be connected by adopting a B-spline curve interpolation method, so that a two-dimensional profile curve chart of the blast hole on the blasting pile cross section is obtained.
And S104, generating a three-dimensional surface profile of the blasting pile by using the two-dimensional profile curves corresponding to the cross sections in the blasting pile, and determining a form prediction result of the blasting pile according to the characteristics of the three-dimensional surface profile.
After the two-dimensional profile curve graphs of the blasting pile cross sections corresponding to all blast holes are obtained, the two-dimensional profile curves are sequentially merged according to the positions of the blast holes, and therefore the surface profile of the three-dimensional blasting pile is generated. Because the blast holes are not closely connected, the adjacent two-dimensional profile curves can be correspondingly smoothed in the merging process, so that a smooth three-dimensional blasting pile surface profile is obtained.
In the obtained three-dimensional surface profile of the blasting pile, the profile characteristics of the three-dimensional surface profile of the blasting pile can be summarized and counted, and prediction parameters such as loosening coefficient, blasting square amount, forward stroke distance and the like of the blasting pile can be obtained according to the counting result, and the parameters can be used for optimizing blasting parameters of an open bench so as to improve blasting quality.
As can be seen from the method for predicting the form of the blasting pile mentioned in the above embodiment, the most important in the method is how to determine the key point in the cross section corresponding to the blast hole. The process of generating the key point is illustrated by including five key points.
In some embodiments, the determining of the second keypoint location, as shown in fig. 3, includes:
and S301, respectively determining the positions of the front explosion venting hole, the rear explosion venting hole and the middle explosion venting hole according to the arrangement number of the blast holes in the drilling information.
It is worth mentioning that the blast hole is the initial position of the blast hole, and the blast hole is formed after the explosive is added into the blast hole. At least three rows of blast holes are arranged in the scene, and for a blasting area with only three rows of blast holes, the blast area is close to the back boundary line of the blasting area and is a back row; the top line near the blast zone is the front row and the remaining row is the middle row. For blasting areas with more than three rows of blastholes, the blasting area is close to the rear boundary line of the blasting area as a rear row; the top line close to the blasting area is a front row, and the middle row is a middle row; if there are even rows, the latter row is selected as the middle row from the two rows at the middle.
And step S302, calculating the channeling depth of the blasting pile at the position of the rear row blasting holes of the cross section of the blasting area by using the coordinates, the row spacing, the row number and the rear row blasting delay parameters of the rear row blasting holes contained in the blasting parameters.
The second key point position is the lowest point of the profile of the blasting pile, the depth of a blasting pile pull channel is defined, and the coordinate value is obtained by calculating parameters such as the coordinates of blasting holes of the back row, the row spacing, the row number, the blasting delay time of the back row and the like through a related blasting calculation formula.
Step S303, determining the coordinates of the second key point according to the depth value of the gully.
The second key point is located at the position of the back row of holes and is the lowest point of the profile of the blasting pile. And after the second key point position is determined, the first key point position can be obtained according to the blasting area of the open bench. Specifically, the first key point is located between the back boundary line of the blasting area and the back row of blast holes, so that the process of determining the first key point, as shown in fig. 4, includes:
step S401, determining the second key point position P2Thereafter, the upper surface of the open bench in the cross section of the blasting area is obtainedTop line projection point P of surfacefuAnd a slope bottom line projection point P of the lower surface of the open-air stepfd。
At the moment of obtaining the second key point P2The first key point location P can be obtained later1Firstly, obtaining the projection point P of the slope top line of the open-air step according to the longitudinal section diagram of the open-air stepfuLeg line projection point PfdAnd the rear edge line projection point V0。
Step S402, determining a top slope line projection point PfuProjection point P to bottom line of slopefdDirection vector dir ofup。
Direction vector dirupThe direction vector is obtained by a starting point coordinate and an end point coordinate on the open-air step from a slope top line to a slope bottom, and is not described again.
Step S403, following the direction vector dirupProjecting the rear edge line of the upper surface of the open-air step to a point V0Projection point P into surface under open bench1dIn (1).
In the actual calculation process, the projection point P1dCan pass through P1d＝Pfd+dirup*||V0PfuAnd | | is obtained by calculation. Specifically, the length of the upper surface of the open-air step is V0PfuProjecting the rear edge line of the upper surface of the open-air step to a point V0Along the direction vector dirupProjection point P projected into lower surface of open bench1dIn, and P1dPfdHas a length V with respect to the length of the upper surface of the open-air step0PfuThe same is true.
Step S404, at the second key point position P2Guiding rays to the back of the explosion area at the angle of repose, and projecting points V on the back edge of the upper surface of the open-air steps0Projected point P in the lower surface of open bench1dDetermine a first key point location P on the intersection line1。
The angle of repose is the angle between the horizontal surface and the object placed on the inclined surface when the inclined surface is in the critical state of sliding down along the inclined surface, and the angle can be determined according to the second key point P2And directly obtaining the blasting parameters after determination. Thus, in the first placeStraight line V in the angle of repose direction of two key point positions0P1dThe intersection point of (A) is the first key point position P1。
In some embodiments, the determining of the third key point location, as shown in fig. 5, includes:
and S501, respectively determining the positions of a front explosion venting hole, a rear explosion venting hole and a middle explosion venting hole of the blast holes according to the blast hole arrangement numbers in the drilling information.
This step is the same as step S301, and may be omitted if the second keypoint location has already been determined before the third keypoint location is determined.
And step S502, calculating the highest point of the outline of the blasting pile at the position of the middle row of blasting holes of the cross section of the blasting area by using the coordinates, the row spacing, the row number, the rock Poulper coefficient, the step height and the middle row of blasting delay parameters contained in the blasting parameters.
The third key point position is the profile highest point of the blasting pile, the rising height of the blasting pile is defined, and the coordinate value is obtained by calculating the parameters such as the coordinate of the middle row of blasting holes, the row distance, the row number, the rock Pythium coefficient, the step height, the middle row blasting delay and the like through a related blasting formula.
And S503, determining the coordinates of the third key point according to the highest point of the contour.
In some embodiments, the determining of the fourth keypoint location, as shown in fig. 6, includes:
step S601, determining positions of a front explosion venting hole, a rear explosion venting hole and a middle explosion venting hole of the blast hole respectively according to the blast hole arrangement numbers in the drilling information.
This step is the same as steps S301 and S501, and may be omitted if the second key location or the third key location is already determined before the fourth key location is determined.
Step S602, determining the front end inflection point of the blasting pile outside the slope crest line of the blasting area by using the row spacing, the row number, the rock Poulna coefficient, the step height and the front row detonation delay parameters contained in the blasting parameters.
The fourth key point is an outline inflection point of the blasting pile, which defines a front end inflection point of the blasting pile, so the fourth key point is generally positioned outside the open bench. And the coordinate value of the fourth key point position is calculated by the parameters of the row distance, the row number, the rock Poulench coefficient, the step height, the front row detonation delay and the like of the front row detonation holes through a related blasting formula.
And step S603, determining the coordinate of the fourth key point according to the front-end inflection point.
In some embodiments, the determining of the fifth keypoint location, as shown in fig. 7, includes:
and step S701, calculating the blasting square amount and the forward stroke distance generated during blasting by using the coordinates, the row spacing, the row number, the rock Poulper coefficient, the step height and the front row blasting delay parameter of each row of blast holes contained in the blasting parameters.
The fifth key point location is the intersection point of the blasting pile and the ground, so the fifth key point location needs to obtain the shape of the blasting pile outside the top line of the slope according to the blasting square amount and the forward stroke distance generated after the blasting of the fifth key point location after the four point locations are obtained. Therefore, in the step, the blasting square amount and the forward stroke distance generated after blasting is finished are calculated and obtained by utilizing the coordinates, the row distance, the row number, the rock Poulna coefficient, the step height and the front row blasting delay parameter of each row of blast holes.
And S702, determining the slope of the blasting pile by using the blasting square amount and the forward stroke distance, and determining the coordinate of the fifth key point location according to the slope angle of the slope of the blasting pile and the horizontal direction and the coordinate of the fourth key point location.
And finally obtaining a slope of the blasting pile outside the top line of the slope by using the generated blasting square amount and the forward stroke distance, and finally determining the coordinate of the fifth key point by using the slope angle of the slope and the coordinate of the fourth key point.
The method for predicting the blasting pile form is described below by combining a specific scene, three rows of blast holes are arranged in the blasting area, one row of blast holes close to the rear boundary line is a rear row of blast holes, and the row number of the rear row of blast holes is 0; the row number of the blast holes in the middle row is 1; the row of blast holes close to the top line of the slope is a front row of blast holes, and the row number of the blast holes is 2. The column numbers of each row of blast holes increase from left to right in sequence, and the blast hole position information is specifically shown in fig. 8.
With three rows of blastholes as shown in figure 8, 5 keypoints are determined in turn from the cross-section of the blast area corresponding to each blasthole. The location of the keypoints is specifically shown in fig. 9. The rear boundary line is shown in fig. 9 at 0 on the ordinate; the three dotted lines represent three rows of blastholes, respectively. Determining key point positions of the five profile lines in the cross section of the blasting area by using the blasting parameters and the drilling information; wherein, the first key point position P1Is a starting point position close to the rear boundary line of the blasting area; second key point location P2Is the lowest point of the profile of the blasting pile; third key point position P3The highest point of the profile of the blasting pile; fourth key point P4Is the contour inflection point of the top slope line close to the blasting area; fifth key point location P5Is the intersection point of the blasting pile and the ground.
Specifically, the first key point P1According to the back wiring of the blasting area and a second key point position P2Determining; second key point location P2The position is determined by the coordinates of the back row holes, the row distance, the row number and the back row explosion initiation delay; third key point position P3The method is determined by the coordinates of blast holes in the middle row, the row distance, the row number, the rock normal coefficient, the step height and the time delay among the hole rows; fourth key point P4The number of rows, the height of steps, the rock normal coefficient, the time delay between hole rows and the row spacing; fifth key point location P5From the fourth key point P4And a deflagration slope angle.
After the five key points are obtained, the key point positions are connected by adopting B-spline interpolation to generate a two-dimensional profile curve of a blasting pile section, and the two-dimensional profile curves corresponding to all the cross sections are combined according to the blast hole sequence to obtain a three-dimensional blasting pile surface profile, which is specifically shown in FIG. 10. After the surface profile of the three-dimensional blasting pile is obtained, related prediction results such as loosening coefficient, blasting square amount, forward impact distance and the like can be obtained according to the profile characteristics, and the prediction results can be used for optimizing blasting parameters of the strip mine, so that the blasting quality and the design efficiency are improved. Compared with the profile curve of the actually measured blasting pile, the method has high precision, and the error rate is not higher than 10% as long as the blasting parameters are optimized.
According to the method for predicting the blasting pile form, blasting parameters and drilling information of a blasting area can be rapidly processed, a two-dimensional blasting pile profile curve of a cross section is rapidly obtained according to the blasting parameters and the drilling information, and the three-dimensional blasting pile form is automatically generated. The method has accurate prediction and high efficiency, can quickly obtain the blasting pile shape, the forward impact distance and the loosening coefficient of the blasting area of the open bench so as to reasonably correct blasting design parameters, optimize the blasting parameters, enable the blasting effect to meet the actual requirement and solve the problems of low precision and poor usability in the prior art.
Corresponding to the above-mentioned embodiment of the method for predicting the burst mode, the present embodiment further provides a system for predicting the burst mode, specifically as shown in fig. 11, the system includes:
the initialization module 1110 is used for acquiring the blasting area range and the geological condition parameters of the open bench, and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters;
a keypoint generation module 1120 for determining keypoints of a plurality of profile cross-section lines in the blasting stack in a cross-section of the blasting region using the blasting parameters and the drilling information;
a contour curve generation module 1130 for connecting key points of the contour section lines to generate a two-dimensional contour curve of a vertical section of the blasting pile;
and the three-dimensional contour prediction module 1140 is used for generating a three-dimensional surface contour of the blasting pile by using the two-dimensional contour curve corresponding to each cross section in the blasting pile and determining a form prediction result of the blasting pile according to the characteristics of the three-dimensional surface contour.
The implementation principle and the technical effects of the burst mode prediction system provided by the embodiment of the invention are the same as those of the burst mode prediction method, and for the sake of brief description, no mention is made in the embodiment, and reference may be made to the corresponding contents in the method embodiment.
The embodiment also provides an electronic device, a schematic structural diagram of which is shown in fig. 12, and the electronic device includes a processor 101 and a memory 102; the memory 102 is used for storing one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the above-mentioned explosive pile shape prediction method.
The server shown in fig. 12 further includes a bus 103 and a communication interface 104, and the processor 101, the communication interface 104, and the memory 102 are connected through the bus 103.
The Memory 102 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Bus 103 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 12, but that does not indicate only one bus or one type of bus.
The communication interface 104 is configured to connect with at least one user terminal and other network units through a network interface, and send the packaged IPv4 message or IPv4 message to the user terminal through the network interface.
The processor 101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 101. The Processor 101 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102 and completes the steps of the method of the foregoing embodiment in combination with the hardware thereof.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs the steps of the method of the foregoing embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some communication interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A method for predicting a blasting pile form is characterized in that a three-dimensional blasting pile form is determined according to drilling and blasting parameters, and the method comprises the following steps:
acquiring the blasting area range and geological condition parameters of an open bench, and determining the blasting parameters and drilling information of the blasting area of the open bench according to the blasting area range and the geological condition parameters;
determining key points of a plurality of profile cross-sectional lines in the blasting area in a cross-section of the blasting area by using the blasting parameters and the drilling information;
connecting key points of the profile sectional line to generate a cross-section two-dimensional profile curve of the blasting pile;
and generating a three-dimensional surface profile of the detonation pile by using the two-dimensional profile curves corresponding to all cross sections in the detonation pile, and determining a form prediction result of the detonation pile according to the characteristics of the three-dimensional surface profile.
2. The method for predicting the blasting form of the surface step according to claim 1, wherein the step of obtaining the blasting area range and the geological condition parameters of the surface step and determining the blasting parameters and the drilling information of the surface step according to the blasting area range and the geological condition parameters comprises the following steps:
determining the blasting area range of the open bench according to the topographic map of the blasting area;
acquiring rock mass data of the open bench in the blasting area range, and determining blasting parameters of the open bench according to the rock mass data; wherein the rock mass data at least comprises: step height, density and Pythium coefficient of ore rocks; the blasting parameters at least comprise: hole distribution information, charging information and detonating network information;
and determining a blast hole arrangement result by using the blasting parameters, and determining the blast hole arrangement result as the drilling information.
3. The method of predicting a form of a blasting pile according to claim 1, wherein the step of determining key points of a plurality of profile cross-sectional lines in the blasting pile in the longitudinal section of the blasting region using the blasting parameters and the drilling information includes:
acquiring the corresponding position of the drill hole in the cross section of the blasting area;
determining at least five key point positions of the outline transverse section line by using the blasting parameters and the drilling information; wherein the first key point position is a starting point position close to the rear boundary line of the blasting area; the second key point position is the lowest point of the profile of the blasting pile; the third key point position is the highest point of the profile of the blasting pile; the fourth key point position is an outline pile-blasting inflection point close to the crest line of the blasting area; and the fifth key point position is the intersection point of the blasting pile and the surface of the step bottom plate.
4. The shot form prediction method according to claim 3, wherein the determination process of the second key point position comprises:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent according to the arrangement numbers of blast holes in the drilling information;
calculating the channeling depth of the blasting pile at the position of the rear row blasting holes of the cross section of the blasting area by using the coordinates, the row spacing, the row number and the rear row blasting initiation delay parameters of the rear row blasting holes contained in the blasting parameters;
determining the second key point position P according to the depth value of the gully2The coordinates of (a).
5. The shot form prediction method according to claim 4, wherein the determining process of the first key point position comprises:
after determining the second key point position P2Then, acquiring a projection point P of a top slope line of the upper surface of the open-air step in the cross section of the blasting areafuAnd a slope bottom line projection point P of the lower surface of the open-air stepfd；
Determining the top slope line projection point PfuTo the bottom slope line projection point PfdDirection vector dir ofup；
Along the direction vector dirupProjecting the rear edge line of the upper surface of the open-air step to a point V0A projection point P projected into a lower surface of the open bench1dPerforming the following steps;
at the second key point P2Guiding rays to the back of the explosion area at the angle of repose, and projecting points V on the back edge line of the upper surface of the open-air steps0And the open platformProjected point P in the lower surface of the step1dDetermine a first key point location P on the intersection line1。
6. The explosive pile form prediction method according to claim 3, wherein the determination process of the third key point position comprises the following steps:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent of the blast holes according to the blast hole arrangement numbers in the drilling information;
calculating the highest point of the outline of the blasting pile at the position of the middle row of blasting holes of the cross section of the blasting area by utilizing the coordinates, the row distance, the row number, the rock Pythium coefficient, the step height and the middle row of blasting delay parameters of the middle row of blasting holes contained in the blasting parameters;
and determining the coordinates of the third key point position according to the highest point of the contour.
7. The shot form prediction method according to claim 3, wherein the determination process of the fourth key point location comprises:
respectively determining the positions of a front explosion vent, a rear explosion vent and a middle explosion vent of the blast holes according to the blast hole arrangement numbers in the drilling information;
determining the front end inflection point of the blasting pile outside the slope crest line of the blasting area by utilizing the row distance, the row number, the rock Pythium coefficient, the step height and the front row detonation delay parameters of the front row blasting holes contained in the blasting parameters;
and determining the coordinates of the fourth key point location according to the front-end inflection point.
8. The shot form prediction method according to claim 7, wherein the process of determining the fifth key point location comprises:
calculating the blasting square amount and the forward stroke distance generated during blasting by using the coordinates, the row spacing, the row number, the rock Prussian coefficient, the step height and the front row blasting delay parameters of each row of blast holes contained in the blasting parameters;
and determining the slope of the blasting pile by utilizing the blasting amount and the forward stroke distance, and determining the coordinate of the fifth key point location according to the slope angle of the slope of the blasting pile and the horizontal direction and the coordinate of the fourth key point location.
9. A pile-explosion form prediction system, comprising:
the system comprises an initialization module, a drilling module and a control module, wherein the initialization module is used for acquiring the blasting area range and the geological condition parameters of the open bench and determining the blasting parameters and the drilling information of the open bench according to the blasting area range and the geological condition parameters;
the key point generating module is used for determining key points of a plurality of profile transverse section lines in the blasting area in the transverse section of the blasting area by utilizing the blasting parameters and the drilling information;
the contour curve generating module is used for connecting key points of the contour sectional line and generating a two-dimensional contour curve of the cross section of the blasting pile;
and the three-dimensional contour prediction module is used for generating a three-dimensional surface contour of the detonation pile by using the two-dimensional contour curves corresponding to all cross sections in the detonation pile and determining a form prediction result of the detonation pile according to the characteristics of the three-dimensional surface contour.
10. An electronic device, comprising: a processor and a storage device; the storage device has stored thereon a computer program which, when executed by the processor, implements the steps of the shot pattern prediction method of any one of claims 1 to 8.
CN202210107886.4A 2022-01-28 2022-01-28 Explosive pile form prediction method and system and electronic equipment Pending CN114493016A (en)

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