Deposit 3D modeling and application

Luo, Zhihua; Liu, Xiaoming; Su, Jia-hong; Wu, Yabin; Wang-ping, Liu

doi:10.1007/s11771-007-0045-9

Cited by 20 publications

(6 citation statements)

References 5 publications

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“…SURPAC Modeling. The SURPAC serial software is a set of megadigitized mining engineering software with domestic leading level in minefields, and it is extensively applied to resource appraisal, geological measurement, mine design plan, production plan management, and reclamation design after pit closure [25][26][27]. Moreover, SURPAC could help metal mines to effectively achieve digitization and informatization of mine design, planning, and management.…”

Section: Development Of the Model Transformation Proceduresmentioning

confidence: 99%

A Simple Generation Technique of Complex Geotechnical Computational Model

Lin

Liu

et al. 2013

Mathematical Problems in Engineering

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Given that FLAC3D (a geotechnical calculation software) is difficult to use for building large, complex, and three-dimensional mining models, the current study proposes a fast and a convenient modeling technique that combines the unique advantages of FLAC3D in numerical calculation and those of SURPAC (a mine design software) in three-dimensional modeling, and the interface program was compiled. First, the relationship between the FLAC3D and the SURPAC unit data was examined, and the transformation technique between the data was given. Then, the interface program that transforms the mine design model to calculate the model was compiled using FORTRAN, and the specific steps of the program implementation were described using a large iron and copper mine modeling example. The results show that the proposed transformation technique and its corresponding interface program transformed the SURPAC model into the FLAC3D model, which expedited FLAC3D modeling, verified the validity and feasibility of the transformation technique, and expanded the application spaces of FLAC3D and SURPAC.

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Section: Development Of the Model Transformation Proceduresmentioning

confidence: 99%

A Simple Generation Technique of Complex Geotechnical Computational Model

Lin

Liu

et al. 2013

Mathematical Problems in Engineering

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“…In mining, 3D geological models are used in resource assessment to characterize the spatial distribution of minerals in ore deposits [17]. A block model description of the geochemical composition is often created by fusing various sources of information from drilling campaigns, these include for instance: assay analysis, material, or geophysical logging, and alignment of stratigraphic units from geologic maps during the exploration phase.…”

Section: Introductionmentioning

confidence: 99%

Modelling Orebody Structures: Block Merging Algorithms and Block Model Spatial Restructuring Strategies Given Mesh Surfaces of Geological Boundaries

Leung¹

2020

JOSIS

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This paper describes a framework for capturing geological structures in a 3D block model and improving its spatial fidelity, including the correction of stratigraphic, mineralization, and other types of boundaries, given new mesh surfaces. Using surfaces that represent geological boundaries, the objectives are to identify areas where refinement is needed, increase spatial resolution to minimize surface approximation error, reduce redundancy to increase the compactness of the model and identify the geological domain on a block-by-block basis. These objectives are fulfilled by four system components which perform block-surface overlap detection, spatial structure decomposition, sub-blocks consolidation, and block tagging, respectively. The main contributions are a coordinate-ascent merging algorithm and a flexible architecture for updating the spatial structure of a block model when given multiple surfaces, which emphasizes the ability to selectively retain or modify previously assigned block labels. The techniques employed include block-surface intersection analysis based on the separable axis theorem and ray-tracing for establishing the location of blocks relative to surfaces. To demonstrate the robustness and applicability of the proposed block merging strategy in a more narrow setting, it is used to reduce block fragmentation in an existing model where surfaces are not given and the minimum block size is fixed. To obtain further insight, a systematic comparison with octree subblocking subsequently illustrates the inherent constraints of dyadic hierarchical decomposition and the importance of inter-scale merging. The results show the proposed method produces merged blocks with less extreme aspect ratios and is highly amenable to parallel processing. The overall framework is applicable to orebody modeling given geological boundaries, and 3D segmentation more generally, where there is a need to delineate spatial regions using mesh surfaces within a block model.

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“…For the estimation process the source of information mostly comes from a restricted number of exploratory boreholes. Due to unavailability of data the whole blocks are not contained the grade value [4]. In resource estimation the value of unsampled blocks are determined from nearby boreholes.…”

Section: Introductionmentioning

confidence: 99%

Geological Reserve Estimation of Limestone Deposit: A Comparative Study Between ISDW and OK

Mallick¹,

Choudhary²,

Budi³

2020

MMC_C

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Geostatistics plays an important role for reserve estimation in mining industry. Geostatistical tools became popular because of its high degree of accuracy and time saving process for estimation. The uncertainty of geological deposit can be populated by geo-statistical tools. The limestone ore deposit was studied in this paper. The assay value of individual constituents of limestone ore i.e CaO, SiO2, Al2O3 and Fe2O3 were determined for a block by using Inverse Square Distance Weighting (ISDW) method. The average assay value of those individual constituents were 45.85, 15.94, 1.56 and 0.82 percentage respectively. The assay value of CaO was also estimated by two linear method of estimation i.e ISDW and Ordinary Kriging (OK). The assay value of CaO were determined 45.85 and 44.67 percentage respectively. The assay values were properly validated and concluded accordingly. The application of ISDW and OK were implemented to build the resource model together in order to assess the uncertainty of the deposit. Grade estimation by using different geo-statistical techniques are done by SURPAC mine planning software.

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Deposit 3D modeling and application

Cited by 20 publications

References 5 publications

A Simple Generation Technique of Complex Geotechnical Computational Model

A Simple Generation Technique of Complex Geotechnical Computational Model

Modelling Orebody Structures: Block Merging Algorithms and Block Model Spatial Restructuring Strategies Given Mesh Surfaces of Geological Boundaries

Geological Reserve Estimation of Limestone Deposit: A Comparative Study Between ISDW and OK

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