CN111624665A - Graphite deposit exploration method - Google Patents

Abstract

The invention discloses a graphite deposit exploration method in the field of mineral exploration, which aims to overcome the defect of difficulty in finding graphite ores in the prior art, and comprises the following steps of firstly defining a mineral forming area according to geological characteristics, secondly compiling a geological mineral draft according to local gravity height abnormality of the mineral forming area and dividing the mineral forming area into mineral distant areas, thirdly drilling a shallow layer according to the mineral forming distant areas and researching magnetic abnormality characteristics in the areas to calibrate target mineral areas, fourthly further reducing the range of the target areas and determining a polarization space, and fifthly drilling the polarization space.

Description

Graphite deposit exploration method

Technical Field

The invention belongs to the field of mineral exploration, and particularly relates to a graphite deposit exploration method.

Background

As is known, the coal mine land feature survey and the ground site selection consume a large amount of manpower, material resources and financial resources in the daily production work of mines, particularly when the terrain with complicated beams, hills, ditches and gullies exists on the ground, the height difference of valley sections is large, and roads in partial areas are not communicated, so that the actual ground surface exploration has great difficulty and blindness, and the position conditions of underground roadways and working surfaces are comprehensively considered during the ground construction of the mines, so that the work complexity is increased.

The sedimentation and deterioration of the hot water jet at the edge of the continental media ancient activity provides basic conditions for the formation of sedimentary deteriorated minerals. After the iron ore is often produced in the strong basic volcanic rock magma on the edge of the active continent, the deposition mineralization is an important process of iron ore mineralization, the metamorphic process plays an important role in further enriching the iron ore, and the graphite ore is mainly formed in the metamorphic process; the production of iron, graphite ore bodies is controlled by the formation and lithology, both of which are associated with production. The iron ore is characterized by strong magnetism, high polarizability and medium resistivity; the graphite ore is nonmagnetic and only has the characteristics of high polarizability and low resistivity. However, the deposition of iron and graphite in the modified iron-graphite ore is accompanied, the prospecting characteristics are complex, and iron and graphite (carbon) are both major elements, so that the aims of predicting the formation of ore, reducing the target area and finding the ore body cannot be achieved by adopting a general chemical prospecting method.

Disclosure of Invention

In order to solve the problems, the invention aims to overcome the difficulty of searching graphite ore by the existing chemical exploration method and improve the ore searching efficiency.

In order to achieve the purpose, the technical scheme of the invention is as follows: a graphite deposit exploration method comprises the following steps of determining an ore forming area according to geological characteristics, compiling a geological mineral draft according to local gravity height anomaly of the ore forming area, dividing the geological mineral draft into ore distant areas, conducting shallow drilling according to the ore forming distant areas, researching magnetic anomaly characteristics in the areas to calibrate a target ore area, further reducing the range of the target area to determine a polarization space, and conducting drilling on the polarization space.

Furthermore, in the second step, the geological mineral draft is drawn in a grid shape, the surface of the grid-shaped map is marked with characteristic places, and the penetration is carried out on the basis of the characteristic places to control the measuring points.

Further, the target area carries out coordinate conversion on the drawing coordinate by taking the coordinate system used by the map coordinate as a reference; calculating a coordinate average value of the converted drawing coordinate and the map coordinate; and marking a polarization space in the network map according to the coordinate average value.

Further, the coincidence portion of pulse fluidic device and slip casting pipe has a plurality of recesses, and pulse fluidic device includes that the cross section is circular shape casing, and the upper surface of casing has the through-hole, and the through-hole embeds there is first extension spring, the lower surface of casing has the opening, and open-ended quantity is 1.

Further, the inside nested second extension spring that has of first extension spring, the length of second extension spring is shorter than first extension spring.

Further, the groove is in clearance fit with the pulse jet device.

Further, the model description established by the magnetic anomaly characteristics in the third step follows the following law:

wherein p is₀Resistivity at a frequency of 0; m is called limiting polarizability, also called charging rate, and is a parameter for representing abnormal intensity of the induced current; tau is a time constant, is a time parameter for representing the frequency characteristic of an induced polarization effect or the charge and discharge speed, can be directly used for distinguishing a polarizer according to the structure, and can be found by utilizing the time constant for deep ores without obvious abnormality of an induced polarization intensity parameter; c, characterizing the parameter of the variation degree of the complex resistivity along with the frequency, and calling the parameter as a frequency correlation coefficient; ω is the angular frequency.

After the scheme is adopted, the following beneficial effects are realized:

1. according to the technical scheme, the general location of the mining area is determined by using the geological characteristics, and the direction is changed to guide the establishment of the mining area model, so that the manpower and material resources consumed in the mining area searching process are reduced.

2. When the target mine area is determined, a polarization space is mainly divided, and mineral products are measured by using a resistivity method, namely mineral product reserves of a deep space obtained after shallow drilling and division confirmation of a target area are obtained.

3. The drill bit is utilized to automatically generate a pulse jet phenomenon in the grouting process, and the first tension spring and the second tension spring which are mutually nested are utilized to reduce resistance and generate a jet phenomenon.

4. The frequency correlation coefficient can be used for dividing local enrichment mineralized bodies from mineralized surrounding rocks and dividing polarized bodies according to structures, so the frequency correlation coefficient is also an important parameter for complex resistivity method research.

Drawings

FIG. 1 is a flow chart of an embodiment of the present invention;

FIG. 2 is a full cross-sectional view of the drill bit;

fig. 3 is a cross-sectional view of the pulse jet device of fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: a grouting pipe 1, a head 2, a pulse jet device 3, a through hole 4,

First extension spring 5, second extension spring 6, opening 7.

The embodiment is basically as shown in the attached figure 1: a method for exploring a graphite deposit comprises the following steps:

firstly, determining a mineral forming area according to geological characteristics, wherein the geological characteristics are based on strata and lithology, and the main defined area is a deposition metamorphic mineral forming system at the edge of the ancient Chinese continent.

And secondly, compiling a geological mineral draft according to the local gravity height anomaly of the mining area, and dividing the geological mineral draft into mining distant areas, wherein the geological mineral draft is drawn in a grid shape, characteristic points are marked on the surface of the grid-shaped map, penetration is carried out on the basis of the characteristic points, and the measuring points are controlled.

Thirdly, shallow drilling is carried out according to the prospect area, magnetic anomaly characteristics in the area are researched to calibrate the target mining area, and the model description established by the magnetic anomaly characteristics follows the following rule:

wherein p is₀Resistivity at a frequency of 0; m is called limiting polarizability, also called charging rate, and is a parameter for representing abnormal intensity of the induced current; tau is a time constant, is a time parameter for representing the frequency characteristic of an induced polarization effect or the charge and discharge speed, can be directly used for distinguishing a polarizer according to the structure, and can be found by utilizing the time constant for deep ores without obvious abnormality of an induced polarization intensity parameter; c, characterizing the parameter of the variation degree of the complex resistivity along with the frequency, and calling the parameter as a frequency correlation coefficient; ω is the angular frequency.

Fourthly, further reducing the range of the target area, determining a polarization space, and performing coordinate conversion on the drawing coordinate of the target area by using the coordinate system used by the map coordinate as a reference when the polarization space is determined; calculating a coordinate average value of the converted drawing coordinate and the map coordinate; and marking a polarization space in the network map according to the coordinate average value.

Referring to fig. 2 and 3, in a fifth step, the polarized space is drilled, a drill bit applied in the drilling includes a grouting pipe 1 and a head 2, a thread-shaped tooth socket is arranged at a vertical central axis of the head 2, the head 2 is communicated with the grouting pipe 1, a pulse jet device is arranged at a communication position of the grouting pipe 1 and the head 2, a plurality of grooves are arranged at a coincidence part of the pulse jet device 3 and the grouting pipe 1, the pulse jet device 3 includes a shell with a circular cross section, a through hole 4 is arranged on an upper surface of the shell, a first tension spring 5 is arranged in the through hole 4, openings 7 are arranged on a lower surface of the shell, the number of the openings 7 is 1, a second tension spring 6 is nested in the first tension spring 5, the length of the second tension spring 6 is shorter than that of the first tension spring 5, and the grooves are in clearance fit with the pulse jet device 3.

In the grouting process, slurry is gushed into the pulse jet device 3 through the grouting pipe 1 until the slurry gushes from the opening 7 of the head 2, the gushed slurry is gushed intermittently under the action of the pulse jet device 3, the rock breaking efficiency is improved, meanwhile, the tooth socket is convenient to clean, broken stones are prevented from blocking the tooth socket, the pulse jet is generated under the condition that the slurry enters the through hole 4, the tension spring is squeezed by the slurry, the first tension spring 5 and the second tension spring 6 are bent, and meanwhile, the tension springs generate simple harmonic motion in the returning process, so that the returning head difference of the first tension spring 5 and the second tension spring 6 is realized, and the slurry is sprayed out in a layered mode.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (7)

1. A method for exploring a graphite deposit, comprising: the method comprises the following steps of determining an ore forming area according to geological characteristics, compiling a geological mineral draft according to local gravity height anomaly of the ore forming area, dividing the geological mineral draft into ore distant areas, performing shallow drilling according to the ore forming distant areas, researching magnetic anomaly characteristics in the areas to calibrate a target ore area, further reducing the range of the target area, determining a polarization space, and performing drilling on the polarization space.

2. A method of prospecting for graphite deposits according to claim 1, characterized in that: and in the second step, the geological mineral draft is drawn in a grid shape, the surface of the grid map is marked with characteristic places, and the penetration is carried out on the basis of the characteristic places to control the measuring points.

3. A method of prospecting for graphite deposits according to claim 2, characterized in that: the target area carries out coordinate conversion on the drawing coordinate by taking the coordinate system used by the map coordinate as a reference; calculating a coordinate average value of the converted drawing coordinate and the map coordinate; and marking a polarization space in the network map according to the coordinate average value.

4. A method of prospecting for graphite deposits according to claim 1, characterized in that: the utility model discloses a grouting device, including the slip casting pipe, pulse fluidic device has a plurality of recesses with the coincidence part of slip casting pipe, and pulse fluidic device includes that the cross section is circular shape casing, and the upper surface of casing has the through-hole, and the through-hole embeds there is first extension spring, the lower surface of casing has the opening, and open-ended quantity is 1.

5. A method of prospecting for graphite deposits according to claim 4, characterized in that: the inside nested second extension spring that has of first extension spring, the length of second extension spring is shorter than first extension spring.

6. A method of prospecting for graphite deposits according to claim 5, characterized in that: the groove is in clearance fit with the pulse jet device.

7. A method of prospecting for graphite deposits according to claim 1, characterized in that: the model description established by the magnetic anomaly characteristics in the third step follows the following rules:

wherein p is₀Resistivity at a frequency of 0; m is called limiting polarizability, also called charging rate, and is a parameter for representing abnormal intensity of the induced current; tau is a time constant, is a time parameter for representing the frequency characteristic of an induced polarization effect or the charge and discharge speed, can be directly used for distinguishing a polarizer according to the structure, and can be found by utilizing the time constant for deep ores without obvious abnormality of an induced polarization intensity parameter; c, characterizing the parameter of the variation degree of the complex resistivity along with the frequency, and calling the parameter as a frequency correlation coefficient; ω is the angular frequency.

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