CN113156531B - Hidden manganese ore bed exploration method - Google Patents
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Abstract
A method for surveying a cryptomelane bed comprises the steps of firstly, obtaining data in a prediction area and using the data as a data sample; processing the obtained data sample to obtain a characteristic value; matching the obtained characteristic value with a model of the manganese ore bed to determine a central phase, a transition phase and an edge phase of the gas-liquid overflow deposition type manganese ore bed; secondly, predicting a space distribution rule of the cryptomelane body; breaking again to judge a contemporaneous fault; recovering a basin prototype of the ore-bearing rock series; determining the spatial distribution direction and the law of the ore-bearing rock system according to the trends of basin control, phase control and ore control contemporaneous fracture; determining the boundary of an exploration target area and the boundary of an ore right application area according to the distribution ranges of a central phase, a transition phase and an edge phase of a gas-liquid overflow deposition type manganese ore bed, determining a hidden manganese ore bed by determining syngenesis fracture, determining the direction of an ore formation stage structure and an ore formation post-structure by basin prototype orientation, and then encircling the ranges of the central phase, the transition phase and the edge phase by the ore phase.
Description
Technical Field
The invention relates to a hidden manganese ore bed exploration method, and belongs to the field of ore bed exploration.
Background
In modern industry, manganese and its compounds are used in various areas of the national economy. Wherein the steel industry is the most important field, the manganese accounts for 90 to 95 percent and is mainly used as a deoxidizer and a desulfurizer in the iron and steel making processes and used for manufacturing alloys. The remaining 10% to 5% of manganese is used in other industrial fields, such as the chemical industry (for the manufacture of various manganese-containing salts), the light industry (for batteries, matches, paints, soaps, etc.), the building industry (colorants and discolorants for glass and ceramics), the defense industry, the electronics industry, as well as in environmental protection and agriculture and animal husbandry, etc. In conclusion, manganese has a very important strategic position in national economy.
The existing manganese ore deposit exploration method, such as a determination method for manganese ore exploration types in soap ore areas in Yangjiang county slope of shallow precipitation, judges whether an ore body is manganese ore according to the size of the ore body, the form complexity degree of the ore body, the uniformity degree of useful components of the ore body and the structure complexity degree of the ore body, but the method can only be applied to outcrop ore deposits with smaller scale, simple form, uniform useful components of the ore body and simple structure complexity degree, and cannot play a role in deep concealed manganese ore with complex structure.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a method for surveying a cryptomelane bed; the method comprises the steps of selecting a region through a special filling map, determining distribution of contemporaneous fracture and a graben basin, determining a concealed manganese ore bed through the contemporaneous fracture, determining a construction direction and a basin prototype after the formation through basin prototype orientation, determining a survey range through boundary separation of ore phases, centering, transition and edge phase ranges, and reducing the number of drilled holes by utilizing net width optimization and synergism; the drilling efficiency is improved through green drilling verification.
The technical scheme for realizing the aim of the invention is that the method for surveying the cryptomelane bed at least comprises the following steps:
(1) special filling map selection area, determining the distribution of syngenetic fracture and cutting basin
(1.1) judging the fracture at the same time according to the connection line of each section thickness mutation zone of the stratum, the mutation zone of sedimentary rock phase, slope breccid rock, gas-liquid overflow central phase and the connection line of beaded IV-level cutting in geological data;
(1.2) carrying out space distribution rule prediction on the cryptomelane body according to 1/5 ten thousand mineral product survey special drawings;
(2) orientation of basin prototype, determining the construction direction in the period of forming ore and after-forming ore
(2.1) recovering a basin prototype of the ore-bearing rock series;
(2.2) determining the spatial distribution direction and the law of the ore-bearing rock system according to the trend of the basin control, the phase control and the ore control simultaneous fracture;
(3) the mineral phases are divided into zones and edges, and the zones are centered in the ranges of central phase, transition phase and edge phase
(3.1) acquiring the data of the spray overflow deposition structure, the morphology of the rhodochrosite, the thickness of the rhodochrosite, the grade of the rhodochrosite and the thickness of the manganese ore-forming geologic body in the prediction area, and taking the data as data samples;
(3.2) processing the data sample obtained in the step (3.1) to obtain a characteristic value;
(3.3) matching the characteristic value obtained in the step (3.2) with a model of the manganese ore bed to determine a center phase, a transition phase and an edge phase of the manganese ore bed;
wherein the model of the center phase of the manganese ore bed is as follows; the length of the overflow hole group is 300-. Rhodochrosite is in the form of vein, lens, layer, tortoise back, lotus; the thickness of the rhodochrosite body is 6-20.0 m. The grade of rhodochrosite is 22-30%. The thickness of the manganese ore forming geologic body is 40.0-95.0 m.
The model of the manganese ore bed transition phase is as follows; the length of the annular spraying overflow port group is 800-7000m, and the width is 300-1500 m. The rhodochrosite is layered and layered. The thickness of the rhodochrosite body is 2-6.0 m. The grade of rhodochrosite is 18-22%. The thickness of the manganese ore forming geologic body is 25.0-40.0 mm.
The model of the edge phase of the manganese ore bed is as follows; the length of the annular spraying overflow port group is 1000-8000m, and the width is 300-1000 m. The rhodochrosite is layered and layered. (ii) a The thickness of the rhodochrosite body is 1-2.0 m. The grade of rhodochrosite is 10-18%. The thickness of the manganese ore forming geologic body is 15.0-25.0 mm.
(3.4) determining the boundary of an exploration target area and the boundary of an application prospect area according to the distribution ranges of the central phase, the transition phase and the edge phase of the blind manganese ore body;
(4) optimizing and increasing the efficiency of the network degree and optimizing the engineering space
(4.1) laying exploration lines according to the engineering spacing of 400 multiplied by 400m to 600 multiplied by 400 m;
(5) green drilling verification, verification and delineation of manganese ore resource reserves
And (5.1) judging whether the position of the drilling hole is a drilling area or a non-drilling area, wherein the non-drilling area comprises a limited area and an unreachable area, if the position of the drilling hole is the drilling area, drilling by adopting a directional drilling method, and if the position of the drilling hole is the non-drilling area, bypassing the area.
The technical scheme is further improved as follows: the step (1.2) is used for predicting the spatial distribution rule of the cryptomelane body according to the 1/5 ten thousand mineral survey special mapping, and is specifically obtained by the following steps:
(1.2.1) filling and drawing a surface stratum boundary on a remote sensing image map in geological data; then filling and drawing the boundary line of the surface stratum to generate fracture and fold;
(1.2.2) dividing a special map filling unit closely related to the manganese ore forming;
(1.2.3) filling the spatial distribution range of the special mapping units according to the relevant positions of the special mapping units in the remote sensing image;
(1.2.4) filling and drawing the spatial distribution and the trend of the contemporaneous fractures in the manganese period according to the contemporaneous fractures;
(1.2.5) determining manganese-rich construction, manganese-poor construction, manganese-containing construction and black shale construction distribution areas as ore-forming period cutting basins; determining a cap dolomite construction distribution area as an ore-forming stage base; overlapping the mine period cutting basin and the rampart distribution area to form a mine period ancient geography map; overlapping the contemporaneous fracture in the mineralization period and the ancient geological map in the mineralization period to form a constructed ancient geological map;
(1.2.6) carrying out space distribution rule prediction on the blind manganese ore body according to the structural ancient geographic map.
And the step (2.1) recovers the basin prototype of the ore-bearing rock series, and is specifically obtained by the following steps:
(2.1.1) respectively measuring and manufacturing various sections of sedimentary phase sections closely related to the mineralization period of the manganese ore according to equal intervals and a proportion scale of 1: 500, wherein the sections comprise sedimentary phase sections of an underburden layer, an mineralization period stratum and an overburden layer of the mineralization period of the manganese ore;
(2.1.2) construction-equilibrium Profile mapping before, during and late mineralization
(2.1.2.1) determining a formation-equilibrium section line and an associated dephasing profile on or adjacent to the line along a direction perpendicular to the maximum thickness of the formation;
(2.1.2.2) connecting each columnar section by a straight line with the top surface of the stratigraphic unit before mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional chart before mineralization;
(2.1.2.3) connecting each columnar section by a straight line with the top surface of the stratigraphic unit in the mineralization phase as a horizontal line, drawing a stratigraphic column diagram of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional diagram in the mineralization phase;
(2.1.2.4) connecting all the columnar sections by straight lines by taking the top surface of the stratigraphic unit at the late stage of the mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a structure-balance section chart at the late stage of the mineralization;
(2.1.3) constructing a balance section diagram according to each period, and respectively compiling rock phase paleogeographic diagrams before the formation of the manganese ore, at the formation stage of the manganese ore and at the late formation stage of the manganese ore according to an isochronal method;
(2.1.4) respectively compiling stratigraphic iso-thickness graphs of manganese ore before ore formation, manganese ore at the ore formation stage and manganese ore at the late ore formation stage according to the measured sedimentary phase sections and a stratigraphic thickness iso-contour analysis method;
(2.1.5) determining the spatial distribution of contemporaneous fracture, graben basin and rampart in each period according to the structure-balance section diagram and the contour map of the stratum in each period, and compiling ancient structure diagrams before the formation of manganese ore, in the formation period of manganese ore and in the late formation period of manganese ore;
(2.1.6) superposing the lithofacies paleogeographic map and the paleogeographic map at each period to obtain a tectonic paleogeographic map before the manganese ore is formed, at the manganese ore forming period and at the manganese ore forming late period;
(2.1.7) constructing an ancient geographic map at each period, carrying out prototype basin recovery analysis, and determining the original structure and stratum framework in the moat basin for controlling the mineral formation of the manganese ore.
And the step (3.4) of determining the boundaries of the exploration target area and the boundaries of the area applying for the prospect are determined according to a geochemical and geophysical quantitative model.
And the geochemical quantitative model in the step (3.4) is a Mn/Cr element ratio model and delta34S isotope anomaly model.
And the geophysical quantitative model in the step (3.4) is an audio magnetotelluric prediction model.
And the directional drilling technology in the step (5.1) is directional drilling with one hole and multiple branches and one base and multiple holes.
According to the technical scheme, the method comprises the following steps: (1) the method judges the existence of the cryptomelane body by judging the existence of the syngeneic fracture, and carries out space distribution rule prediction on the cryptomelane body;
(2) the method further judges the structure of the manganese ore in the ore forming period and the structure direction after the formation through the space distribution direction and rule of the ore-containing rock system;
(3) the method further determines the central phase, the transition phase and the edge phase of the manganese ore bed by matching with the model so as to determine the boundary of an exploration target area and the boundary of an application prospect area;
(4) the method optimizes the engineering spacing by laying exploration lines at the engineering spacing of 400 multiplied by 400m to 600 multiplied by 400 m.
Detailed Description
The present invention will be described in detail with reference to examples, but the present invention is not limited to the examples.
A hidden manganese ore bed exploration method comprises the following steps:
(1) and (4) a special map filling selection area is used for determining the distribution of the contemporaneous fractures and the cutting basins, wherein the cutting is a geological structure widely developed on the crust, and the contemporaneous fractures are the cutting basins as groove-shaped fracture structures with two sides surrounded by high-angle faults and the middle lowered.
(1.1) judging the intergrowth fracture according to the connecting lines of the thickness mutation zone of each group of the stratum, the mutation zone of the sedimentary rock phase, the slope breccid rock, the gas-liquid overflow central phase and the beaded IV-grade cutting;
the syngeneic fault is an important and special ore control structure type which is simultaneously and continuously carried out with the ore forming action of sediment, volcano, earthquake, fluid and manganese ore; therefore, whether the contemporaneous fault exists or not can be judged, and whether the manganese ore bed exists or not can be judged; the difference of the stratum thicknesses on two sides of the stratum thickness mutation zone by more than one time is one of the characteristics of the syngeneic fault, and the occurrence of cap dolomite or black shale in the mutation zone of sedimentary facies is one of the characteristics of the syngeneic fault; the slope breccia is the breccid deposit in the cutting basin or at the edge of the basin, the line between the ground rampart and the breccid deposit is one of the characteristics of the syngeneic fault, the gas-liquid overflow central phase can be formed by an overflow port group consisting of one or more overflow ports, the whole is controlled by the syngeneic fracture, so the line of the central phase long axis is one of the characteristics of the syngeneic fault; the simultaneous fracture controls the linear distribution of the overflow port groups consisting of a plurality of overflow ports, and simultaneously controls the IV-grade cutting of manganese ore spray deposition in place, and the connecting line of the beaded IV-grade cutting is one of the characteristics of the simultaneous deposition fault.
(1.2) according to the 1/5 ten thousand mineral survey special drawings, carrying out space distribution rule prediction on the cryptomelane body, wherein the method comprises the following substeps:
(1.2.1) filling and drawing a surface stratum boundary on a remote sensing image map in geological data; then filling and drawing the boundary line of the surface stratum to generate fracture and fold;
(1.2.2) dividing a special map filling unit closely related to the manganese ore forming; the bubble-shaped manganese-rich rhodochrosite, the block-shaped medium-grade rhodochrosite, the tuff and the black shale are divided into manganese-rich building units; the blocky medium-grade rhodochrosite, the strip-shaped low-grade rhodochrosite and the black shale are manganese-poor building units; the strip-shaped low-grade rhodochrosite and black shale are manganese-containing building units; the black shale is a black shale building unit; dolostone and lime green shale are cap dolostone building units.
(1.2.3) filling the spatial distribution range of the special mapping units according to the relevant positions of the special mapping units in the remote sensing image;
(1.2.4) filling and drawing the spatial distribution and the trend of the contemporaneous fractures in the manganese period according to the contemporaneous fractures;
(1.2.5) determining manganese-rich construction, manganese-poor construction, manganese-containing construction and black shale construction distribution areas as ore-forming period cutting basins; determining a cap dolomite construction distribution area as an ore-forming stage base; overlapping the mine period cutting basin and the rampart distribution area to form a mine period ancient geography map; overlapping the contemporaneous fracture in the mineralization period and the ancient geological map in the mineralization period to form a constructed ancient geological map;
(1.2.6) carrying out space distribution rule prediction on the blind manganese ore body according to the structural ancient geographic map.
(2) Orientation of basin prototype, determining the construction direction in the period of forming ore and after-forming ore
(2.1) recovering a basin prototype of an ore-bearing rock system, wherein the ore-bearing rock mass is closely related to an ore deposit in time, space and cause and is a parent rock of an ore; the method specifically comprises the following steps:
(2.1.1) respectively measuring and manufacturing various sections of sedimentary phase sections closely related to the mineralization period of the manganese ore according to equal intervals and a proportion scale of 1: 500, wherein the sections comprise sedimentary phase sections of an underburden layer, an mineralization period stratum and an overburden layer of the mineralization period of the manganese ore;
(2.1.2) construction-equilibrium Profile mapping before, during and late mineralization
(2.1.2.1) determining a formation-equilibrium section line and an associated dephasing profile on or adjacent to the line along a direction perpendicular to the maximum thickness of the formation;
(2.1.2.2) connecting each columnar section by a straight line with the top surface of the stratigraphic unit before mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional chart before mineralization;
(2.1.2.3) connecting each columnar section by a straight line with the top surface of the stratigraphic unit in the mineralization phase as a horizontal line, drawing a stratigraphic column diagram of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional diagram in the mineralization phase;
(2.1.2.4) connecting all the columnar sections by straight lines by taking the top surface of the stratigraphic unit at the late stage of the mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a structure-balance section chart at the late stage of the mineralization;
(2.1.3) constructing a balance section diagram according to each period, and respectively compiling rock phase paleogeographic diagrams before the formation of the manganese ore, at the formation stage of the manganese ore and at the late formation stage of the manganese ore according to an isochronal method;
(2.1.4) respectively compiling stratigraphic iso-thickness graphs of manganese ore before ore formation, manganese ore at the ore formation stage and manganese ore at the late ore formation stage according to the measured sedimentary phase sections and a stratigraphic thickness iso-contour analysis method;
(2.1.5) determining the spatial distribution of contemporaneous fracture, graben basin and rampart in each period according to the structure-balance section diagram and the contour map of the stratum in each period, and compiling ancient structure diagrams before the formation of manganese ore, in the formation period of manganese ore and in the late formation period of manganese ore;
(2.1.6) superposing the lithofacies paleogeographic map and the paleogeographic map at each period to obtain a tectonic paleogeographic map before the manganese ore is formed, at the manganese ore forming period and at the manganese ore forming late period;
(2.1.7) constructing an ancient geographic map at each period, carrying out prototype basin recovery analysis, and determining the original structure and stratum framework in the moat basin for controlling the mineral formation of the manganese ore.
(2.2) determining the spatial distribution direction and the law of the ore-bearing rock system according to the trend of the basin control, the phase control and the ore control simultaneous fracture; specifically, the connecting line direction of the thickness center of the manganese ore deposit in the ore-forming period in the moat basin is the space distribution direction of the ore-containing rock system; the connecting line direction of the thickness centers of sediments in different periods in the graben basin;
(3) the mineral phases are divided into zones and edges, and the zones are centered in the ranges of central phase, transition phase and edge phase
(3.1) acquiring the data of the spray overflow deposition structure, the morphology of the rhodochrosite, the thickness of the rhodochrosite, the grade of the rhodochrosite and the thickness of the manganese ore-forming geologic body in the prediction area, and taking the data as data samples;
(3.2) processing the data sample obtained in the step (3.1) to obtain a characteristic value;
specifically, the length and the width of a spray opening group of a spray deposition structure are obtained, and only the length and the width of the spray opening group in spray deposition structure data are reserved; assigning the morphology of the rhodochrosite body, if the rhodochrosite body is in a vein shape, assigning the rhodochrosite body as A, assigning as B, assigning as C in a similar layer shape, assigning as D in a layer shape and the like, only retaining the assignment in the morphology of the rhodochrosite body, extracting the thickness of the rhodochrosite body, only retaining the thickness value of the rhodochrosite body, extracting the grade of the rhodochrosite body, only retaining the grade number of the rhodochrosite body, extracting the thickness data of the manganese ore formed body, and only retaining the thickness value of the manganese ore formed body;
the length and width of the overflow port group, the shape assignment of the rhodochrosite body, the thickness value of the rhodochrosite body, the grade number of the rhodochrosite body and the thickness value of the manganese ore forming geological body are the characteristic values.
(3.3) matching the characteristic value obtained in the step (3.2) with a model of the manganese ore bed to determine a center phase, a transition phase and an edge phase of the manganese ore bed;
the model of the manganese ore bed central phase is as follows; the length of the overflow hole group is 300-. Rhodochrosite is in the form of vein, lens, layer, tortoise back, lotus; the thickness of the rhodochrosite body is 6-20.0 m. The grade of rhodochrosite is 22-30%. The thickness of the manganese ore forming geologic body is 40.0-95.0 m.
The model of the manganese ore bed transition phase is as follows; the length of the annular spraying overflow port group is 800-7000m, and the width is 300-1500 m. The rhodochrosite is layered and layered. The thickness of the rhodochrosite body is 2-6.0 m. The grade of rhodochrosite is 18-22%. The thickness of the manganese ore forming geologic body is 25.0-40.0 mm.
The model of the edge phase of the manganese ore bed is as follows; the length of the annular spraying overflow port group is 1000-8000m, and the width is 300-1000 m. The rhodochrosite is layered and layered. (ii) a The thickness of the rhodochrosite body is 1-2.0 m. The grade of rhodochrosite is 10-18%. The thickness of the manganese ore forming geologic body is 15.0-25.0 mm.
(3.4) determining the boundary of an exploration target area and the boundary of an application prospect area according to the distribution ranges of the central phase, the transition phase and the edge phase of the blind manganese ore body; in the embodiment, the boundary of the exploration target area and the boundary of the area applying for the exploration right are determined according to a geochemical and geophysical quantitative model, wherein the geochemical quantitative model is a Mn/Cr element ratio model and a delta34S isotope anomaly model, namely IV-grade cutting containing manganese ore in the Mn/Cr element ratio model, wherein the Mn/Cr ratio is about 40; peripheral cutting without manganese ore, wherein the ratio of Mn/Cr is 3-5; the ratio of Mn to Cr of rampart is more than 800 and is delta34Central phase delta in S isotope anomaly model34S value is greater than 55 per mill, transition phase delta34S value is 50-55 per mill, and edge phase delta34The S value is less than 50 per mill, and the geophysical quantitative model is an audio magnetotelluric prediction model; predicting the hidden manganese-containing cutting according to a high-low-high three-layer electrical structure of the hidden manganese-containing ore cutting area and a low-high two-layer electrical structure model of the manganese-free cutting area;
(4) optimizing and increasing the efficiency of the network degree and optimizing the engineering space
(4.1) laying exploration lines according to the engineering spacing of 400 multiplied by 400m to 600 multiplied by 400 m;
(5) green drilling verification, verification and delineation of manganese ore resource reserves
And (5.1) judging whether the position of the drilling hole is a drilling area or a non-drilling area, wherein the non-drilling area comprises a limited area and an unreachable area, if the position of the drilling hole is the drilling area, drilling by adopting an in-pit drilling method, and if the position of the drilling hole is the non-drilling area, bypassing the area. The underground drilling is the construction in the tunnel, the hidden manganese ore bed tends to be deepened due to overlarge depth, so that the ore body cannot be better controlled in the ground construction, and the underground drilling adopts a directional drilling technology which is 'one hole, multiple branches and one base, multiple holes' directional drilling.
Claims (7)
1. The method for surveying the cryptomelane bed is characterized by at least comprising the following steps of:
(1) special filling map selection area, determining the distribution of syngenetic fracture and cutting basin
(1.1) judging the fracture at the same time according to the connection line of each section thickness mutation zone of the stratum, the mutation zone of sedimentary rock phase, slope breccid rock, gas-liquid overflow central phase and the connection line of beaded IV-level cutting in geological data;
(1.2) carrying out space distribution rule prediction on the cryptomelane body according to 1/5 ten thousand mineral product survey special drawings;
(2) orientation of basin prototype, determining the construction direction in the period of forming ore and after-forming ore
(2.1) recovering a basin prototype of the ore-bearing rock series;
(2.2) determining the spatial distribution direction and the law of the ore-bearing rock system according to the trend of the basin control, the phase control and the ore control simultaneous fracture;
(3) the mineral phases are divided into zones and edges, and the zones are centered in the ranges of central phase, transition phase and edge phase
(3.1) acquiring the data of the spray overflow deposition structure, the morphology of the rhodochrosite, the thickness of the rhodochrosite, the grade of the rhodochrosite and the thickness of the manganese ore-forming geologic body in the prediction area, and taking the data as data samples;
(3.2) processing the data sample obtained in the step (3.1) to obtain a characteristic value;
(3.3) matching the characteristic value obtained in the step (3.2) with a model of the manganese ore bed to determine a center phase, a transition phase and an edge phase of the manganese ore bed;
wherein the model of the manganese ore bed central phase is as follows: the length of the overflow hole group is 300-; rhodochrosite is in the form of vein, lens, layer, tortoise back, lotus; the thickness of the rhodochrosite body is 6-20.0 m; the rhodochrosite has a grade of 22-30%; the thickness of the manganese ore forming geological body is 40.0-95.0 m;
the model of the manganese ore bed transition phase is: the length of the annular spraying overflow port group is 800-7000m, and the width is 300-1500 m; the rhodochrosite is layered and layered; the thickness of the rhodochrosite body is 2-6.0 m; the rhodochrosite body grade is 18-22%; the thickness of the manganese ore forming geological body is 25.0-40.0 mm;
the model of the edge phase of the manganese ore bed is as follows: the length of the annular spraying overflow port group is 1000-; the rhodochrosite is layered and layered; the thickness of the rhodochrosite body is 1-2.0 m; the rhodochrosite body grade is 10-18%; the thickness of the manganese ore forming geological body is 15.0-25.0 mm;
(3.4) determining the boundary of an exploration target area and the boundary of an application prospect area according to the distribution ranges of the central phase, the transition phase and the edge phase of the blind manganese ore body;
(4) optimizing and increasing the efficiency of the network degree and optimizing the engineering space
(4.1) laying exploration lines according to the engineering spacing of 400 multiplied by 400m to 600 multiplied by 400 m;
(5) green drilling verification, verification and delineation of manganese ore resource reserves
And (5.1) judging whether the position of the drilling hole is a drilling area or a non-drilling area, wherein the non-drilling area comprises a limited area and an unreachable area, if the position of the drilling hole is the drilling area, drilling by adopting a directional drilling method, and if the position of the drilling hole is the non-drilling area, bypassing the area.
2. The cryptomelane bed exploration method according to claim 1, wherein in step (1.2), the cryptomelane body is subjected to space distribution rule prediction according to 1/5 ten thousand mineral survey special item maps, and the method is specifically obtained through the following steps:
(1.2.1) filling and drawing a surface stratum boundary on a remote sensing image map in geological data; then filling and drawing the fracture and the fold on the boundary line of the stratum;
(1.2.2) dividing a special map filling unit closely related to the manganese ore forming;
(1.2.3) filling the spatial distribution range of the special mapping units according to the relevant positions of the special mapping units in the remote sensing image;
(1.2.4) filling and drawing the spatial distribution and the trend of the contemporaneous fractures in the manganese period according to the contemporaneous fractures;
(1.2.5) determining manganese-rich construction, manganese-poor construction, manganese-containing construction and black shale construction distribution areas as ore-forming period cutting basins; determining a cap dolomite construction distribution area as an ore-forming stage base; overlapping the mine period cutting basin and the rampart distribution area to form a mine period ancient geography map; overlapping the contemporaneous fracture in the mineralization period and the ancient geological map in the mineralization period to form a constructed ancient geological map;
(1.2.6) carrying out space distribution rule prediction on the blind manganese ore body according to the structural ancient geographic map.
3. The cryptomelane bed investigation method of claim 1, wherein step (2.1) restores basin prototypes of the petroliferous containing system, in particular by:
(2.1.1) respectively measuring and manufacturing various sections of sedimentary phase sections closely related to the mineralization period of the manganese ore according to equal intervals and a proportion scale of 1: 500, wherein the sections comprise sedimentary phase sections of an underburden layer, an mineralization period stratum and an overburden layer of the mineralization period of the manganese ore;
(2.1.2) construction-equilibrium Profile mapping before, during and late mineralization
(2.1.2.1) determining a formation-equilibrium section line and an associated dephasing profile on or adjacent to the line along a direction perpendicular to the maximum thickness of the formation;
(2.1.2.2) connecting each columnar section by a straight line with the top surface of the stratigraphic unit before mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional chart before mineralization;
(2.1.2.3) connecting each columnar section by a straight line with the top surface of the stratigraphic unit in the mineralization phase as a horizontal line, drawing a stratigraphic column diagram of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a tectonic-equilibrium sectional diagram in the mineralization phase;
(2.1.2.4) connecting all the columnar sections by straight lines by taking the top surface of the stratigraphic unit at the late stage of the mineralization as a horizontal line, drawing a stratigraphic column chart of each sedimentary phase section downwards, dividing an isochronal phase section and a rock phase section, and drawing an environment boundary line or a rock phase boundary line to obtain a structure-balance section chart at the late stage of the mineralization;
(2.1.3) constructing a balance section diagram according to each period, and respectively compiling rock phase paleogeographic diagrams before the formation of the manganese ore, at the formation stage of the manganese ore and at the late formation stage of the manganese ore according to an isochronal method;
(2.1.4) respectively compiling stratigraphic iso-thickness graphs of manganese ore before ore formation, manganese ore at the ore formation stage and manganese ore at the late ore formation stage according to the measured sedimentary phase sections and a stratigraphic thickness iso-contour analysis method;
(2.1.5) determining the spatial distribution of contemporaneous fracture, graben basin and rampart in each period according to the structure-balance section diagram and the contour map of the stratum in each period, and compiling ancient structure diagrams before the formation of manganese ore, in the formation period of manganese ore and in the late formation period of manganese ore;
(2.1.6) superposing the lithofacies paleogeographic map and the paleogeographic map at each period to obtain a tectonic paleogeographic map before the manganese ore is formed, at the manganese ore forming period and at the manganese ore forming late period;
(2.1.7) constructing an ancient geographic map at each period, carrying out prototype basin recovery analysis, and determining the original structure and stratum framework in the moat basin for controlling the mineral formation of the manganese ore.
4. The cryptomelane bed investigation method of claim 1, wherein: the boundary of the exploration target area and the boundary of the area applying for the prospect in the step (3.4) are determined according to a geochemical and geophysical quantitative model.
5. The cryptomelane bed investigation method of claim 4, wherein: the geochemical quantitative model in the step (3.4) is a Mn/Cr element ratio model and delta34S isotope anomaly model.
6. The cryptomelane bed investigation method of claim 4, wherein: and (4) the geophysical quantitative model in the step (3.4) is an audio magnetotelluric prediction model.
7. The cryptomelane bed investigation method of claim 1, wherein: the directional drilling technology in the step (5.1) is directional drilling with one hole and multiple branches and one base and multiple holes.
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