Intelligent mining and stripping method suitable for BIF iron ore bed

Abstract

The invention belongs to the technical field of surveying and mapping, and relates to an intelligent mining and stripping method suitable for a BIF iron ore bed, which can be matched with a clamping and adjusting system to accurately control mining and stripping operation of a stope, reduce the influence of human factors on the mining and stripping operation, improve the execution rate of a mining and stripping plan, and reduce the probability of errors of an ore feeding part, a rock stripping part and a rock discharging part. According to the technical scheme, an unmanned aerial vehicle is adopted for aerial survey of a to-be-mined stope, and an aerial survey three-dimensional model is established; and aiming at the output characteristics of the BIF iron ore bed, constructing a block model of'ore body + ore type + grade (TFe / MFe) + ore rock type 'on the aerial survey three-dimensional model. And making a mining and stripping plan according to the aerial survey three-dimensional model.

Description

Technical Field

[0001] The invention belongs to the technical field of surveying and mapping, and relates to an intelligent mining and stripping method suitable for a BIF iron ore deposit. Background Art

[0002] BIF iron ore deposits have a large extension and large reserves. With the different degrees of metamorphism, the mineral symbiosis of the ore often changes significantly, resulting in large changes in the grindability and selectivity of the ore, which is not conducive to the selection process. During the planning period, it is necessary to determine the reasonable destination based on the grindability and selectivity of different ores. Due to the large changes in ore properties, the grindability, selectivity, grade (TFe / MFe), ore type, and ore rock type of each ore in the mining area must be clarified during the planning period. The plan is prepared based on these data to clarify the destination of the ore and rock. After the plan is completed, the on-site workers are often unable to understand the mining and stripping plan due to the large differences in their cultural levels, resulting in large deviations between the stripping position, rock discharge position, and mining position and the planned position. Summary of the invention

[0003] In order to overcome the defects in the above-mentioned related technologies, the present invention proposes an intelligent mining and stripping method suitable for BIF iron ore deposits. It can cooperate with the card adjustment system to accurately control the mining and stripping operations in the stope, reduce the impact of human factors on the mining and stripping operations, improve the execution rate of the mining and stripping plan, and reduce the probability of errors in the mining, rock stripping, and rock removal areas.

[0004] In order to achieve the above technical objectives, the present invention provides an intelligent mining and stripping method applicable to BIF iron ore deposits. The intelligent mining and stripping method applicable to BIF iron ore deposits includes: using a drone to conduct aerial survey of the mining site to be mined, and establishing an aerial survey three-dimensional model. According to the output characteristics of the BIF iron ore deposit, a block model of "ore body + ore type + grade (TFe / MFe) + ore rock type" is constructed on the aerial survey three-dimensional model. A mining and stripping plan is formulated according to the aerial survey three-dimensional model.

[0005] Preferably, the method for establishing an aerial survey 3D model comprises: using a drone to scan the ground of the mining site to be mined and generate a point cloud, generating a surface 3D model based on the point cloud, and selecting the mining site area to be mined as the aerial survey 3D model based on the surface 3D model.

[0006] Preferably, based on the known distribution information of the iron ore deposits in the three-dimensional model of the surface, the distribution characteristics of the iron ore deposits are used to establish an iron ore deposit distribution model in the aerial survey three-dimensional model; The distribution information of the known iron ore deposits in the three-dimensional surface model is acquired based on production exploration and updated in real time.

[0007] Preferably, the mining plan is sent to the card adjustment system, and the card adjustment system is used to monitor the operating position of the excavator, the rock discharge of the ore transport truck, and the ore unloading position in real time.

[0008] The beneficial effects of the present invention are: The present invention solves the problem that the stripping position, rock discharge position and ore lowering position deviate greatly from the plan due to the large differences in cultural levels of on-site workers, thereby improving the execution rate of the mining plan, avoiding the occurrence of mis-discharge and disorder, improving the stability rate of the mill grade, reducing the ore loss rate, and efficiently utilizing the ore resources in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 Point cloud images scanned by drones; Figure 2 A three-dimensional model of the surface generated based on the point cloud map; Figure 3 To establish the distribution map of iron ore deposits in the three-dimensional model of the surface; Figure 4 To generate the actual three-dimensional ground map; Figure 5 Stripping plan map for the distribution of iron ore deposits; Figure 6 It is a real-time monitoring map of vehicles in the three-dimensional model map of the surface. DETAILED DESCRIPTION

[0011] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0012] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0013] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0014] like Figures 1 to 6 As shown, the intelligent mining and stripping method applicable to BIF iron ore deposits described in the present invention comprises: using a drone to conduct aerial survey of the stope to be mined, and establishing an aerial survey three-dimensional model. According to the output characteristics of the BIF iron ore deposit, a block model of "ore body + ore type + grade (TFe / MFe) + ore rock type" is constructed on the aerial survey three-dimensional model. A mining and stripping plan is formulated according to the aerial survey three-dimensional model.

[0015] Preferably, the method for establishing an aerial survey 3D model comprises: using a drone to scan the ground of the mining site to be mined and generate a point cloud with an error within 0.5 m. Generating a surface 3D model based on the point cloud, and selecting the mining site area to be mined as the aerial survey 3D model based on the surface 3D model.

[0016] Use drones to conduct aerial surveys of mining sites to be mined once a month to collect surface point clouds and generate aerial survey 3D models, which are then updated based on the collection results.

[0017] Preferably, based on the known distribution information of the iron ore deposits in the three-dimensional model of the surface, the distribution characteristics of the iron ore deposits are used to establish an iron ore deposit distribution model in the aerial survey three-dimensional model; The distribution information of the known iron ore deposits in the three-dimensional surface model is acquired based on production exploration and updated in real time.

[0018] Ore rock types are divided into: red magnetic mixed ore, amphibole magnetic ore, topsoil, amphibole schist, and rock. Based on the characteristics of the iron ore deposit itself and the data obtained from production exploration, the location of the distributed iron ore deposit can be marked in the three-dimensional surface model.

[0019] Preferably, the mining plan is sent to the card adjustment system, and the card adjustment system is used to monitor the operating position of the excavator, the rock discharge of the ore transport truck, and the ore unloading position in real time.

[0020] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0021] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An intelligent mining and stripping method suitable for BIF iron ore deposits, characterized in that: Use drones to conduct aerial surveys of the mining sites to be mined and build aerial survey 3D models; According to the output characteristics of the BIF iron ore deposit, a block model of "ore body + ore type + grade (TFe / MFe) + ore rock type" is constructed on the aerial survey 3D model; Develop mining plans based on aerial survey 3D models.

2. The intelligent mining and stripping method applicable to BIF iron ore deposit according to claim 1, characterized in that: The method for establishing an aerial survey three-dimensional model comprises: Use drones to scan the ground of the mining site to be mined and generate point clouds; A surface three-dimensional model is generated based on the point cloud, and the mining area to be mined is selected as the aerial survey three-dimensional model based on the surface three-dimensional model.

3. The intelligent mining and stripping method applicable to BIF iron ore deposit according to claim 1, characterized in that: According to the known distribution information of the iron ore deposits in the three-dimensional model of the surface, the distribution characteristics of the iron ore deposits are used to establish an iron ore deposit distribution model in the three-dimensional model of aerial survey; The distribution information of the known iron ore deposits in the three-dimensional surface model is acquired based on production exploration and updated in real time.

4. The intelligent mining and stripping method applicable to BIF iron ore deposit according to claim 1, characterized in that: The mining plan is sent to the card dispatching system, and the card dispatching system is used to monitor the operating position of the excavator, the rock discharge of the mining truck, and the mining position in real time.

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