WO2019039925A1 - Procédé de préparation qualimétrique d'ébauches de réserves géologiques suivant les horizons d'une mine - Google Patents

Procédé de préparation qualimétrique d'ébauches de réserves géologiques suivant les horizons d'une mine Download PDF

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WO2019039925A1
WO2019039925A1 PCT/KZ2017/000025 KZ2017000025W WO2019039925A1 WO 2019039925 A1 WO2019039925 A1 WO 2019039925A1 KZ 2017000025 W KZ2017000025 W KZ 2017000025W WO 2019039925 A1 WO2019039925 A1 WO 2019039925A1
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geological
quality
areas
modal
content
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PCT/KZ2017/000025
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Азимхан КУРМАНКОЖАЕВ
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Азимхан КУРМАНКОЖАЕВ
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]

Definitions

  • the invention relates to the qualimetric formation of the quality of reserves and can be used in the exploration, preparation and extraction of solid mineral reserves.
  • the aim of the invention is the qualimetric modernization of the scalar array of geological reserves on the parameters of uniformity, concentration and variability of geological content, providing increased readiness of recoverable reserves to the technical conditions and market demand.
  • Modernization of quality formation at the basic level of exploration and preparation of reserves is carried out by qualimetric reproduction of differentiated zoned geological areas on a cartographic basis containing qualitative and common and marginal ore reserves typified by uniformity, conditionality, concentration and variability of component contents using qualimetric geo-indicators.
  • the natural geological and genetic properties of the modal characteristic of quality characterized by continuity of distribution, real mapping and geometrical contour in the reservoir space, high statistical information content and unbiasedness in the presence of uncertainties, functional relationships of its average value and other parameters of the distribution of content.
  • the method includes contouring and geotechnological differentiation of ores of infiltration deposits, and consists in carrying out aseptic testing of the activity of sulphate-reducing microorganisms.
  • the contours of the bacterial content are mapped, areas corresponding to high concentrations of bacteria are distinguished, they are classified as high-grade, areas with medium activity of bacteria are classified as conditioned, and areas with low concentrations of bacteria ranked as substandard.
  • These indicators establish the zone of mineralization of different geotechnological quality for the choice of leaching method.
  • the level of bacterial concentration as a geo-indicator of ore differentiation according to the degree of conditioning, is acceptable for rare minerals, and no additional criteria for differentiated contouring of different-grade ores are involved.
  • the method includes determining the distribution of the content of the useful component in the volume of the drilling and blasting unit using geostatistics methods, surveying the collapse surface, a mathematical model for calculating the collapse of the block, the distribution of the useful component content in the collapse, calculate the average distribution of the collapse height, which are used as a reliable information basis for operational excavation plans blasted rock mass.
  • this method does not consider the spatial patterns of the placement of the contents of the component within the blasted rock mass, and their influence on the accuracy of estimating the average content of the component in the crests of the rock mass.
  • mapping areas of post-ore postmagmatically modified rocks [RF Patent JV ° 02055376 MGT G0IV1 1/00, 02.27.1996].
  • the essence of the invention for mapping sites of post-ore postmagmatically modified rocks, elementary cells of square shape are distinguished on a topographic map, the total length of thalwegs of permanent and temporary water courses is measured in cells, positive and negative deviations from background values of measured values are determined in cells, and according to the experimentally determined dependence on the combination deviations of one or a different sign are judged on the presence and type of postmagmatically modified rocks.
  • the analytical estimates describing the dependencies used and the quantitative criteria for identifying target representations are insufficiently reflected or absent, which affects the efficiency of their application in various problems of geology.
  • a method for detecting faults in intrusive arrays [USSR Patent JYO 996975, YUSH01U9 / 00, 1983] includes sampling, their analysis for the presence of quantitative microcline content, taken as an indicator of tectonic disturbances, mapping of the analysis data, identification of samples by microcline content belonging to the same group, the allocation of linear zones of placement of groups, and by their spatial position the definition of faults
  • a similar “Method of detecting faults” [Patent RF N ° 4760598/25, 01.30.1994] is known, including sampling, analysis of their composition, selection of violations indicators on the map, detection of linear areas of indicators on the map and judgment of their spatial the position on the location of faults, characterized in that in order to expand the scope of the method, analyze samples for the content of tin (Sn), chromium (Cr) and cobalt (Co), calculate the ratio Sn / Cr and Sn / Co, as indicators of eny in the basement of the minimum value of the relationship, and violations of the volcanic cover - maximum.
  • Sn tin
  • Cr chromium
  • Co cobalt
  • microcline, tin and chromium are not present in all rocks, respectively, they have a narrow scope in the field of mapping.
  • the indicators used in these methods are not disclosed in terms of their spatial connection with other features of the array and the accuracy of the display during mapping.
  • the average value of the iron content in the allocated block volume is determined using the integral function of the average, based on the density of the Gaussian probability distribution, and the variance is calculated using the parameters of the correlation function.
  • the Bayes theorem, or Bayes statistics, in combination with the parameters of the Gaussian distribution was used in modifying the equations for determining the mean and variance.
  • the practice of using probabilistic statistical methods in assessing and describing the quality of ore deposits is widespread and using them in the method methodically does not contradict the general provisions of statistics, in particular, estimating dispersion using the correlation (covariance) function to account for changes in the content over a given distance is acceptable if necessary.
  • the essence of the invention "Method of qualimetric preparation of geological reserves of a solid fossil along the mine horizons" consists in the qualimetric reproduction of spatially differentiated geological and operational areas within the geological reserves of a deposit in the horizons mapped using the geological content developed as a geoindicator.
  • Qualimetric differentiation of the geological stock of solid mineral provides for the modernization of its structure with the help of qualimetric modal criteria, according to which:
  • the statistical properties of a modal quantity are characteristic of its formation, as a nodal point, around which the main frequencies of the statistical series are grouped and changes occur in the function, trend, and shape of the curves of the distribution function; the mode-to-mean ratio reflects the geometry of the probabilistic frequencies of the characteristic characterizing a given empirical sample.
  • the spatial properties of a modal quantity are inherent to a change in its values in different directions of the deposit.
  • the modal value is its only value, which is highly informative, and is the main numerical characteristic of the empirical distribution.
  • the degree of informativeness of the modal value was studied by analyzing the symmetric type of the empirical distributions of chromium oxide contents over Kempirsai chromite, aluminum oxide along the Krasnooktyabrsky bauxite, iron o on Lisakovsk iron ore deposits, asbestos on Dzhetygorinsky deposits, on asymmetric types - lead, barite, zinc on Karagailinsky and Zhairemsky polymetallic deposits; for extremely asymmetric radial types - gold, tungsten, copper, silver at Maykainsky and Bestyubinsky gold ore, Dzhambulsky rare metal, Dzhezkazgan copper ore deposit, as well as for empirical distributions of economic indicators [Kurmankokozhaev A. Probabilistic models of the distribution of signs of minerals. Monograph, Almaty, KazNI
  • the high information content of the modal value is inherent in symmetrical and extremely asymmetric radial types of content distributions (50 n - 70%).
  • the table shows the empirical values of the share of modal frequencies in the total set of values of the indicators and the calculated values of the informativity of the modal value for various indicators separately for the types of their statistical distributions.
  • the value of the information content is determined using traditional analytical assessment based on the value of probabilistic entropy, which is widely used to evaluate informative mining and geological factors.
  • the modal value like the median, is less susceptible to random errors, is more stable in samples with kurtosis, can be determined with some uncertainties, remains unchanged, when converting a random variable, is easily determined, can be approximately by counting, more precisely histogram or variation series of distribution.
  • This value is the only and main attribute of the quality characteristic, which is functionally determined and average value of geological content, as well as functionally related to the main statistical parameters of the distribution.
  • the mode is equal to the average.
  • a lognormal distribution it is calculated through the logarithm of the variance and medium; with gamma distribution, through dispersion and its theoretical parameters; with probability-structure distribution, through average and statistical spreads relative to the mode.
  • the analytical expression of qualimetric criteria is provided through a statistical estimate of the average value of the geological content, and the spatial expression is provided through the geometric expression of the corresponding Spare the differentiated areas of geological reserve.
  • Each qualimetric criterion is analytically represented by means of the average formula known in statistics, based on the density distribution function of the mean.
  • f (x) is the density of the distribution function of the variable x
  • xpc can be estimated through modal magnitude of geological content.
  • the modal value of the content here serves as a condition parameter on the quality of the ore and performs the functions of on-board content.
  • Probabilistic-statistical estimates (6) - (9) express the level of conditionality of the geological content in the differentiated areas of quality, common and marginal ores, and also reflect the statistical essence of the base geo-indicator of qualimetrization of geological reserves.
  • the average content, as a measure of the conditionality of geological reserves, is expressed in terms of the modal value of the geological content and makes it possible to estimate the reserves of the outlined geological-geometric areas.
  • Analytical estimates of the mean can be transformed into working forms, taking into account the specific density function, for which this empirical content distribution is most often described.
  • qualimetric criteria is also provided through geometric expressions of areas, geological areas differentiated by them. Spatial zoning and contouring of geological areas is carried out through the dimensions of their areas by using the spatial connection of a deterministic geometric unit per one well (sample) and the interval of a variation range of distribution of contents.
  • N S 0 - the sum of distribution frequencies and the total area of the ore massif, USD, m 2 ; d 0 - amplitude statistical range, calculated as the difference between the maximum and minimum values of the metal content; u - frequency modal interval, dol.
  • Equality (10) expresses the relations between the coefficients of the specific fraction of the J-th area in the total area and the specific fraction of the J-ro frequency range in the total set of frequencies.
  • Equality (11) - modified view Sturges formula expresses the relationship of the coefficient of the specific fraction of the J-th interval frequency and the total number of observations (samples).
  • the ratio represents the size of the zone of influence of the observation.
  • samples i.e. specific area per one frequency or well; the ratio is the specific proportion of the size of the modal interval in total
  • rij is the modal frequency attributable to the class interval of the empirical distribution series, respectively, over the Jth
  • the table shows the quantitative proportions and sizes of the modal area calculated by formulas (12) - (15) for various types of distributions and types of indicators.
  • the qualimetric structure of differentiation of geological reserves provides for spatial mapping of three basic geological and three operational areas according to geo-indicator criteria given in the table.
  • geological content in the geological areas of high-quality and common ores minimum geological values
  • the process of qualimetization of a geological reserve includes differentiated zoning of individual geological areas, in order sequentially from a site of high-quality ore with a rich content to subsequent sites of ordinary and marginal ores with a low concentration of quality.
  • the order of differentiation of geological content is accompanied by a gradual decrease in its values along subsequent geological areas.
  • the second operational level of differentiation is carried out separately for the geological section of ordinary ores (based on the significance of the area), similarly, by means of updated values of modal geoindicators determined by the statistical totality of the contents within the contour of ordinary ores. Obtained instead of the basic geological at the initial level, three operational sites, exceeding technical conditions of privates not exceeding
  • the limiting criterion for further level differentiation of any obtained geological or operational section is the permissible minimum number of statistical data established by the theory of statistics (N> 50) to ensure the reliability of the results of the assessment of the spatial and statistical patterns of the distribution of the variable.
  • N the permissible minimum number of statistical data established by the theory of statistics (N> 50) to ensure the reliability of the results of the assessment of the spatial and statistical patterns of the distribution of the variable.
  • the final effective level of differentiation of the exploration array can be achieved earlier than the level corresponding to this restriction.
  • the operational section of the excavation preparation of marginal ores includes zones of poor, substandard and ore-breeding
  • Method 1 is different in that for the first time a geo-indicator criterion for differentiated zoning of a geological exploration ore massif substantiated a modal geological content, which is the only value in a scalar field of contents that provides spatial zoning of geological reserves for uniformity of quality and variation of reserves concentrated in them.
  • Method 1 is characterized by the fact that the first use of the natural geological and genetic properties and functional relationships of the modal quality characteristic with average and measures of variability, concentration, informativeness, uncertainty of the distribution of geological content made it possible to solve the previously unexplored geospatial reference problem inherent in the basic exploration array with target parametric indicators of exploration of the geological reserve tion quality stocks and preparation of finished by bringing their values to the limits defined stable.
  • Method 1 is characterized by the fact that analytical estimates of determining the size of modal (modomorphic) area, and areas containing qualitatively rich and ordinary less rich ores, exceeding technical conditions, as well as marginal, containing ballast qualities reducing ore masses not exceeding their level by modifying the spatial relationship of the frequency interval of the statistical series and the geometric expression of the zone of influence of geological content.
  • This new position is based on a conceptual framework for the qualimetization of the geological reserve.
  • Analytical and experimental confirmation was carried out on geological and operational sites by determining the values of the parameters of homogeneity, accuracy, variability and conditionality of geological content, which are traditionally used as target parametric indicators of exploration and reserves preparedness and stability of ore production quality.
  • Target parametric indicators of qualimetric preparation of geological reserves based on the concept qualification of them are the system parameters of uniformity, exploration and stability of quality.
  • the homogeneity of ore quality is determined by the levels of absolute values, concentration and informativeness of geological content. In essence, as the main characteristics of the uniformity of quality, they create its parametric structure as a whole.
  • the main target of improving the homogeneity of ore quality based on the qualimetry of the geological reserve is ensured by means of geo-indicator criteria for its differentiation according to
  • Relative entropy can take values in
  • the degree of concentration of quality is a defining indicator of quality homogeneity and sustainability. the level of change of geological content within the reservoir information array.
  • n is the number of i - s contents, - average contents by
  • n is the number of sub-objects that differ in the combination of properties
  • H (pc) - entropy in terms of.
  • the calculation of the degree of concentration of the contents of this formula is carried out in two ways.
  • the first option contains data on the initial geological reserve (on differentiation):
  • the second option contains the data of three differentiated sites: Since approximately:
  • a measure of the informativeness of mineral indicators allows revealing the structure, properties and patterns of formation of the information array and take into account the degree of influence of each external and internal factors associated with them. To prove the increase in the degree of informativeness of a qualitative indicator of a geological survey array, using its differentiation, let us use the analytical evaluation common in practice.
  • the values of the main indicators determining the quality of geological reserves consistently change.
  • the main target indicator that predetermines the exploration and stability of ore volumes the variance of variability is represented by measures of amplitude magnitude statistical standard deviation
  • the natural decrease in amplitude variability as the geological reserve differentiates is based on the concept of qualimetry of quality and is reflected in its basic structure.
  • the dispersion measure of the variability of geological content is defined as the sum of the squares of the deviations of the successive first differences of the component content by a known statistical formula
  • K is the number of first consecutive differences
  • n the number of different values of the contents.
  • the dispersion measure decreases in proportion to the decrease
  • the variance of the contents is proportional to the average value of the first consecutive differences and depends on the average value of the content [A.N. Ezhov. Alignment and calculation of the distribution of series. Gosstatizdat, 1961, 201 s].
  • the reliability and geometric completeness of the contouring of differentiated zoned ore areas along the horizon is ensured by creating qualimerized areas with significant areas and preserving the properties of continuity and smoothness lines of their contouring, integrity and compactness of their contours in a coordinated space of the horizon.
  • ⁇ is the mean square error of determining the individual value of the content
  • V is the coefficient of variation
  • Inequality (42), (43) shows the decreasing of mean square and relative error of determining the average content while differentiating the geological reserve into homogeneous sections of high-quality, common and near-ore ores.
  • the allowable error in the differentiation of geological reserves is taken less than the value before its differentiation.
  • t is the probability coefficient
  • n is the number of observations
  • g is the coefficient of communication of adjacent values of the content.
  • the unified technical result of the invention is the improvement of qualimetric readiness and readiness of geological reserves to a sustainable optimum of exploration and stabilization of the quality of ore products. Expenses for exploration and quality stabilization, time and laboriousness of decision-making on qualimetric cards are reduced.
  • the system of individual results according to the invention includes:
  • Comparative advantages of the proposed method according to the invention from the existing traditional is to eliminate the following disadvantages, including: 1) The practice of consistently reusable increase in exploration wells, unjustified in size and utility *, of sampling of mine workings and clearing faces, often accompanied with uncertainty, to reach the condensation limit corresponding to the true average value of the geological content of the process unit and the operational section, due to discretely placed sets of scattered geological counting blocks with calculated values of the average content, making multifactorial, labor Kim and sometimes impossible to establish real patterns and other specific features of the distribution of the average geological content, regardless of the various computer and other model developments used and plans for the isolines of the contents, often accompanied by systematic and random errors of interpolation, smoothing, typology.
  • In-depth qualimetization of the operational sites obtained is performed based on the target indicators of the geological and technological problems of exploration and testing of drilling and blast holes and clearing faces, scheduling and quality stabilization, and preparing ready-made reserves by building special technomorphological structures.
  • When building their technomorphological structures combined types of modal geo-indicators with conditional and technological criteria are used.
  • Example. The evaluation of the implementation of the proposed method for the qualimetric preparation of geological reserves of a solid fossil is carried out on the basis of the results of an experimental test of changes in the target indicators of qualimetrization of a geological exploration array with its qualimetric differentiation using modal geoindicators.
  • the “Geophysical” field deposit gently sloping (10–50 °), depth ranges from 150 to 300 meters, the main chemical component of chromite ores is chromium oxide (Cr 2 0 3 ), thickness ranges from 30 to 80 m, average C 2 content 0 3 in the reserves category (B + C) is 49.5%, calculated according to the detailed (baseline) exploration, wells that have been drilled along the 20x40 m grid.
  • the current condition (N ° 256-K) and technical conditions currently commodity chromite ores include ores with a chromium oxide content of at least 45% (with a balance grade of 30%).
  • the summary table shows the spatially zoned areas by qualimetric geoindicators and the results of the calculation of target indicators for qualimetrization of a geological exploration array of modal and average values, variance of variability for differentiated geological and operational sites in chromite conditions birth "Geophysical".
  • the modal value of the geological content is reduced from a maximum of 50% to a minimum of 46%, its average value in proportion from 54% to a minimum of 42.5%.
  • geological content is minimal within the sections of modotype (0.72 and 2.0%) and quality (1, 20 and 3.2%) ores, the maximum within the ordinary (1, 19%) and marginal (1, 35 and 5, 0%) of ores, and are due to the decreasing degree of concentration of the contents in these areas.

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Abstract

L'invention concerne un procédé de préparation qualimétrique de réserves géologiques de minerai solide suivant les horizons d'une mine comprenant des réserves géologiques et des informations, des indices de répartition territoriale, la génération de qualité et la cartographie. Dans ce procédé, la modernisation d'une génération d'un niveau basique de la prospection géologique est mise en oeuvre par la reproduction qualimétrique de secteurs géologiques soumis à la répartition territoriale et par leur cartographie suivant les horizons contenant des minerais de qualité, de type et de mode uniques, ordinaires ou adjacentes au circuit, différenciés en fonction de géoindicateurs modaux selon des paramètres de concentration, de variabilité et de propriétés qualitatives, dans les limites desquels on a établi expérimentalement une diminution de la dispersion et de l'indétermination, une augmentation de l'uniformité et de la précision du contenu géologique jusqu'à un niveau optimal jamais atteint, une répartition territoriale spatiale et la définition de contours se font selon des quantités calculées de surface sur ces sections qui sont déterminées à partir de liens spatiaux d'unité géométrique d'influence de sondes et d'intervalle statistique de série de variabilité de distribution. Le résultat technique consiste en une augmentation de l'uniformité qualimétrique et de l'état de préparation de réserves géologiques jusqu'à un niveau optimal stable d'étendue de prospection et de stabilisation de la qualité de la production de minerais. On réduit également les coûts de prospection et de stabilisation de la qualité, ainsi que le temps et la quantité de travail pour la prise de décisions sur des cartes qualimétriques.
PCT/KZ2017/000025 2017-08-21 2017-12-04 Procédé de préparation qualimétrique d'ébauches de réserves géologiques suivant les horizons d'une mine WO2019039925A1 (fr)

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CN113139298A (zh) * 2021-05-12 2021-07-20 中国电建集团成都勘测设计研究院有限公司 冰水堆积细粒防渗土料超径块碎石含量的评价方法
CN115526544A (zh) * 2022-11-03 2022-12-27 北京昊华能源股份有限公司 一种基于多类型数据的绿色矿山建设规划方法及系统
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CN110348035A (zh) * 2019-04-12 2019-10-18 长沙迪迈数码科技股份有限公司 露天矿山质量异常自动处理方法、装置及存储介质
CN110348035B (zh) * 2019-04-12 2023-11-07 长沙迪迈数码科技股份有限公司 露天矿山质量异常自动处理方法、装置及存储介质
CN113139298A (zh) * 2021-05-12 2021-07-20 中国电建集团成都勘测设计研究院有限公司 冰水堆积细粒防渗土料超径块碎石含量的评价方法
CN115795774A (zh) * 2022-05-30 2023-03-14 中核第四研究设计工程有限公司 一种基于时空模型的铀资源动态变化量计算和展示方法
CN115565623A (zh) * 2022-10-19 2023-01-03 中国矿业大学(北京) 一种煤地质成分的分析方法、系统、电子设备及存储介质
CN115526544A (zh) * 2022-11-03 2022-12-27 北京昊华能源股份有限公司 一种基于多类型数据的绿色矿山建设规划方法及系统

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