CN114165210B - Deep coal resource fluidization mining method and system - Google Patents
Deep coal resource fluidization mining method and system Download PDFInfo
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- CN114165210B CN114165210B CN202111541757.8A CN202111541757A CN114165210B CN 114165210 B CN114165210 B CN 114165210B CN 202111541757 A CN202111541757 A CN 202111541757A CN 114165210 B CN114165210 B CN 114165210B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Abstract
The invention provides a deep coal resource fluidization mining method and a deep coal resource fluidization mining system, wherein the method comprises the following steps: determining a working mining strip of a coal seam in a region to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip; the fluidization mining equipment carries out fluidization processing on the coal mine at the working mining strip; extracting the coal mine subjected to fluidization treatment through a gas extraction hole; taking the coal gas extraction hole after the extraction fluidization treatment as a grouting filling hole, and updating the coal gas extraction hole; and filling grouting into the coal seam goaf through the grouting filling holes. The invention improves the utilization rate of the drilled hole, saves manpower and material resources and preparation time of mining, and puts a fluidized mining device into the coal bed to extract the coal gas gasified in situ by the solid coal resource on the ground without developing a tunnel and an underground chamber, building a resource transfer station and a coal pillar, thereby reducing the cost of tunnel construction, maintenance and coal transportation and simultaneously improving the extraction rate of the coal resource.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a deep coal resource fluidization mining method and system.
Background
At present, 80% of coal mines in China are mined by adopting underground mining, and the coal mining method has the defects of low mining rate, more reserved coal pillars, high supporting cost, poor safety, low economic benefit and the like. With the gradual completion of the mining of the shallow high-quality thick coal seam, the defects of the traditional underground mining are increasingly prominent in the environments of thin coal seams, deep coal seams, "third lower" coal pressing, high-sulfur and high-gas coal seams and the like with poor economy and safety. Aiming at the safety problem and the economic problem exposed in the process of deep coal resource exploitation, a group of scholars provide a method for in-situ fluidization exploitation of deep coal resources. For example, patent publication No. CN113338934A discloses an in-situ gasification device for fluidized mining of deep coal, which comprises a mining crushing cabin, an in-situ gasification cabin and a filling conveying cabin, and can realize fluidized conversion of deep coal in situ. Also, as a chinese patent publication No. CN111287748A, a fluidized loop mining structure and method for deep coal resources is disclosed, which solves the problem of transporting fluidized coal resources to the ground, but the method requires that a chamber be dug underground to establish a resource transfer station, and resources are recovered by installing different lift shafts or pipelines. In conclusion, the prior art does not have much description on the effective recovery of the deep solid coal resource flow state converted substance and the scientific, repeated and effective utilization of the drill holes laid on the ground at the early stage of the coal bed, and has the problems of large digging amount of the traditional mining underground tunnel, high cost of constructing and maintaining the well tunnel, more reserved coal pillars, low extraction rate, poor safety and the like.
Disclosure of Invention
The invention aims to provide a deep coal resource fluidization mining method and system, which greatly improve the utilization rate of a drill hole and the mining rate of coal resources by arranging ground drill holes in a coal seam for early detection, advanced modification, gas extraction and grouting filling.
In order to achieve the purpose, the invention provides the following scheme:
a deep coal resource fluidization mining method comprises the following steps:
determining a working mining stripe of a coal bed in a region to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
fluidizing the coal mine at the working mining strip by using fluidized mining equipment;
extracting the coal mine subjected to fluidization treatment through the gas extraction hole;
taking the coal gas extraction hole after the extraction fluidization treatment as a grouting filling hole, and updating the coal gas extraction hole;
filling grouting into the coal seam goaf through the grouting filling holes; and the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to fluidization treatment.
Optionally, the determining a working mining strip of the coal seam in the area to be mined specifically includes:
arranging a row of drill holes as detection holes in an area to be mined; the drill hole penetrates through a geological layer on the coal seam in the area to be mined;
after the geological parameters of the area to be mined are detected through the detection holes, taking the detection holes as advanced modification holes, and arranging a row of drill holes in parallel with the advanced modification holes as updated detection holes;
after the coal seam of the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modification hole, determining the advanced modification hole as a gas extraction hole, and updating the advanced modification hole;
determining the area covered by the gas extraction hole as an initial extraction stripe;
arranging a vertical shaft to convey fluidized mining equipment to the initial mining strip;
and determining the initial mining strip as a working mining strip of the coal seam in the area to be mined.
Optionally, the detection hole, the advanced modification hole, the gas extraction hole and the grouting filling hole in the area to be mined are sequentially arranged along the advancing direction of the fluidized mining equipment; the detection hole and the advanced modification hole are arranged in front of the fluidization exploitation equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
Optionally, the updating of the gas extraction hole specifically includes:
and determining the advanced modified hole as a gas extraction hole.
Optionally, the updating advanced modified hole specifically includes:
the probe was determined to be a lead modified well.
A deep coal resource fluidized mining system comprising:
the working mining strip determining module is used for determining the working mining strip of the coal bed in the area to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
the fluidization treatment module is used for enabling fluidization mining equipment to carry out fluidization treatment on the coal mine at the working mining strip;
the coal mine extraction module is used for extracting a coal mine subjected to fluidization treatment through the gas extraction hole;
the grouting filling hole determining module is used for taking the coal gas extraction hole after the coal mine is subjected to extraction fluidization treatment as a grouting filling hole and updating the coal gas extraction hole;
the grouting module is used for filling grouting into the coal seam goaf through the grouting filling hole; and the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to fluidization treatment.
Optionally, the working mining band determination module specifically includes:
the detection hole setting unit is used for setting a row of drill holes as detection holes in the area to be mined; the drill hole penetrates through a geological layer on the coal seam in the area to be mined;
the advanced modified hole determining unit is used for taking the detection hole as an advanced modified hole after the geological parameters of the area to be mined are detected through the detection hole, and arranging a row of drill holes in parallel with the advanced modified hole as an updated detection hole;
the coal gas extraction hole determining unit is used for determining the advanced modified hole as a coal gas extraction hole and updating the advanced modified hole after the coal bed in the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modified hole;
the initial mining strip determining unit is used for determining the area covered by the gas extraction hole as an initial mining strip;
the fluidization exploitation equipment conveying unit is used for arranging a vertical shaft to convey the fluidization exploitation equipment to the initial exploitation strip;
and the working mining strip determining unit is used for determining the initial mining strip as the working mining strip of the coal bed in the area to be mined.
Optionally, the detection hole, the advanced modification hole, the gas extraction hole and the grouting filling hole in the area to be mined are sequentially arranged along the advancing direction of the fluidized mining equipment; the probing hole and the advanced modified hole are arranged in front of the fluidization mining equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
Optionally, the grouting filling hole determining module specifically includes:
and the gas extraction hole updating unit is used for determining the advanced modified hole as a gas extraction hole.
Optionally, the gas extraction hole determining unit specifically includes:
and the advanced modified hole updating subunit is used for determining the detection as the advanced modified hole.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a deep coal resource fluidization mining method and a deep coal resource fluidization mining system, wherein the method comprises the following steps: determining a working mining strip of a coal seam in a region to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip; fluidization mining equipment carries out fluidization processing on a coal mine at a working mining strip; extracting the coal mine subjected to fluidization treatment through a coal gas extraction hole; taking the coal gas extraction hole after the extraction fluidization treatment as a grouting filling hole, and updating the coal gas extraction hole; and filling grouting into the coal seam goaf through the grouting filling holes. The invention improves the utilization rate of the drilled hole, saves manpower and material resources and preparation time of mining, and puts a fluidized mining device into the coal bed to extract the coal gas gasified in situ by the solid coal resource on the ground, thereby having no need of developing a tunnel and a chamber, building a resource transfer station, needing no coal pillar, having no need of ventilation in unmanned operation, isolating air and explosion prevention, reducing the cost of tunnel construction, maintenance and coal transportation, and simultaneously improving the extraction rate of the coal resource.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a fluidized mining method for deep coal resources according to an embodiment of the present invention;
FIG. 2 is a three-dimensional view of a fluidized mining layout of deep coal resources in an embodiment of the present invention;
FIG. 3 is a top view of a deep coal resource fluidized mining layout in an embodiment of the present invention;
FIG. 4 is a side view of a deep coal resource fluidized mining arrangement in an embodiment of the present disclosure;
FIG. 5 is a schematic vertical shaft diagram of a fluidized deep coal resource mining layout in an embodiment of the present invention.
Description of the drawings: 1-coal bed; 2-mining the strip; 300-fluidized mining equipment; 301-intelligent excavation and regulation cabin; 302-high-efficiency gasification and slag discharge cabin; 4-pumping and mining area; 5-grouting a filling area; 6-a detection hole; 7-advanced modified pores; 8-gas extraction holes; 9-grouting and filling holes; 10-coal seam boundary; 11-grouting filling boundaries; 12 overlying strata; 13-vertical shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a deep coal resource fluidization mining method and system, which greatly improve the utilization rate of a drill hole and the mining rate of coal resources by arranging ground drill holes in a coal seam for early detection, advanced modification, gas extraction and grouting filling.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the invention provides a deep coal resource fluidization mining method, which comprises the following steps:
step 101: determining a working mining strip of a coal seam in a region to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
step 102: fluidization mining equipment carries out fluidization processing on a coal mine at a working mining strip;
step 103: extracting the coal mine subjected to fluidization treatment through a coal gas extraction hole;
step 104: taking the coal gas extraction hole after the coal mine is subjected to extraction fluidization treatment as a grouting filling hole, and updating the coal gas extraction hole;
step 105: filling grouting into the coal seam goaf through the grouting filling holes; the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to the fluidizing treatment.
arranging a row of drill holes as detection holes in an area to be mined; the drill hole penetrates through a geological layer on a coal seam in the area to be mined;
after geological parameters of a region to be mined are detected through the detection holes, the detection holes are used as advanced modification holes, and a row of drill holes are arranged in parallel with the advanced modification holes and used as updated detection holes;
after the coal bed in the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modification hole, determining the advanced modification hole as a gas extraction hole, and updating the advanced modification hole;
determining a region covered by the gas extraction hole as an initial extraction strip;
arranging a vertical shaft to convey fluidized mining equipment to an initial mining strip;
the initial mining band is determined to be a working mining band for the coal seam in the area to be mined.
Specifically, a detection hole, an advance modification hole, a gas extraction hole and a grouting filling hole in the area to be mined are sequentially arranged along the advancing direction of the fluidized mining equipment; the detection hole and the advanced modification hole are arranged in front of the fluidized mining equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
Specifically, the updating of the gas extraction hole specifically comprises the following steps:
and determining the advanced modified hole as a gas extraction hole.
Specifically, the updating of the advanced modified hole specifically includes:
the probe was determined to be a lead modified well.
As shown in fig. 2-5, the mining layout of the present invention includes: a coal seam 1; a mining stripe 2 located in the coal seam; the fluidized mining apparatus 300 is extracting along the mining seam 2; an extraction zone 4 located adjacent to the mining seam 2 in the coal seam 1; a grouting filling area 5 which is positioned adjacent to the extraction area 4 of the coal seam 1; a grout filled boundary 11 at the coal seam 1 and a coal seam boundary 10 within the coal seam 1. The layout also comprises detection holes 6 positioned in the coal seam 1, and the area near the detection holes 6 is subjected to geothermal, coal quality, stress distribution, hydrological and geological exploration; the thermal rock breaking modification is carried out on the area near the advanced modification hole 7, wherein the advanced modification hole 7 is positioned in the coal seam 1; the coal gas is delivered to the ground through the coal gas extraction holes 8 positioned in the extraction area 4; and grouting filling holes 9 positioned in the grouting filling area 5 are used for filling high-expansion high-density materials into the formed goaf through the grouting filling holes 9. The layout also includes a fluidized mining apparatus 300 located on the mining seam 2; intelligent excavation and regulation cabins 301 positioned at two ends of the fluidization mining equipment 300; the high-efficiency gasification and slag discharge cabin 302 is positioned in the middle of the fluidization mining equipment 300, and formed coal gas and coal slag are discharged to the extraction area 4 from the side surface of the high-efficiency gasification and slag discharge cabin 302.
As shown in fig. 3, the coal seam 1 is a regular quadrilateral area, and the coal seam boundary is a rectangular boundary.
The row spacing of the coal seam drill holes is comprehensively determined to be 300m per row spacing and 200m per row drill hole spacing by factors such as coal seam hydrogeological conditions, detection equipment, advanced modification equipment, extraction equipment and filling equipment cost and efficiency.
A row of detection holes 6 are distributed to the coal seam 1 in a region close to a coal seam boundary 10 in the coal seam 1 through drilling and punching equipment, and geological conditions such as temperature, gas content, coal quality, overlying strata water content, fracture development degree and the like of an initial mining region are detected.
After the detection is completed through the detection hole 6, the detection hole 6 is switched to the advanced modification hole 7, the preheating rock breaking modification is performed on the area near the advanced modification hole 7 in a microwave and laser mode, the mining difficulty of the fluidized mining equipment 300 is reduced, the high-efficiency gasification of the fluidized mining equipment 300 and the gasification treatment of the slag discharge cabin 302 are facilitated, and the mining efficiency is improved. Meanwhile, a row of new detection holes 6 are arranged in front of the advanced modification holes 7 along the advancing direction for detection.
The vertical shaft is exploited through the fluidization exploitation equipment 300 to enter the coal seam boundary 10, the intelligent excavation and regulation cabin 301 at the two ends of the fluidization exploitation equipment 300 is utilized to carry out extraction along the exploitation strip 2, the intelligent excavation and regulation cabin 301 is utilized to crush and intelligently screen coal bodies, screened coal dust is sent to the high-efficiency gasification and slag discharge cabin 302 to be gasified, and produced CO and H 2 The equal gas and the coal slag are discharged to the extraction area 4 through the side of the high-efficiency gasification and slag discharge cabin 302 of the fluidization mining equipment 300, wherein the gas which is extracted and converted in the initial mining process is extracted through the vertical shaft developed through the fluidization mining equipment 300. When the recovery is carried out, the recovery of the device 300 to be fluidized is carried out to the modification range of the advanced modification hole 7, the advanced modification hole 7 is switched to be a gas extraction hole 8, a row of new detection holes 6 are arranged along the advancing direction, the old detection holes 6 are switched to be the advanced modification holes 7, and the gas produced by gasification of the device 300 is collected to a ground pump station through the gas extraction hole 8.
The fluidized mining equipment 300 adopts reciprocating type stoping, when coal stoping of a mining area is finished, the fluidized mining equipment 300 is pushed to the modification range of the advanced modification hole 7, a row of new detection holes 6 are distributed along the pushing direction, the functions of the old detection holes 6 and the old advanced modification holes 7 are respectively switched to the functions of the advanced modification hole 7 and the coal gas extraction hole 8, the function of the old coal gas extraction hole 8 is switched to the function of the grouting filling hole 9, grouting filling is carried out on the mining area through the grouting filling hole 9, a grouting filling boundary 11 is formed, a closed space is formed between a mining stripe 2 and the grouting filling boundary 11, produced coal gas is limited in the closed space, and the extraction efficiency is improved.
The power source of the fluidized mining equipment 300 is a gas power generation system with an efficient gasification and slag discharge cabin. When the recovery is carried out, a part of coal gas is extracted from the high-efficiency gasification and slag discharge cabin 302 as power energy; before the coal seam coal resource is mined, the fluidization mining apparatus 300 may pre-store sufficient power for its return to the surface.
When the invention is based on the one-hole four-purpose deep coal resource fluidized mining method, the functions of fluidized coal mining and drilling can be realized in an unmanned and air-isolated environment without considering the problems of traditional mining ventilation and explosion prevention.
In addition, the invention also provides a deep coal resource fluidization mining system, which comprises:
the working mining strip determining module is used for determining the working mining strip of the coal bed in the area to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
the fluidization processing module is used for enabling fluidization mining equipment to carry out fluidization processing on the coal mine at the working mining strip;
the coal mine extraction module is used for extracting the coal mine subjected to fluidization treatment through the coal gas extraction hole;
the grouting filling hole determining module is used for taking the coal gas extraction hole after the coal mine is subjected to extraction fluidization treatment as a grouting filling hole and updating the coal gas extraction hole;
the grouting module is used for filling grouting into the coal seam goaf through the grouting filling hole; the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to the fluidizing treatment.
The working mining stripe determining module specifically comprises:
the detection hole setting unit is used for setting a row of drill holes as detection holes in the area to be mined; the drill hole penetrates through a geological layer on a coal seam in the area to be mined;
the advanced modified hole determining unit is used for taking the detection hole as an advanced modified hole after the geological parameters of the area to be mined are detected through the detection hole, and arranging a row of drill holes in parallel with the advanced modified hole as an updated detection hole;
the coal gas extraction hole determining unit is used for determining the advanced modified hole as a coal gas extraction hole after the coal bed in the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modified hole, and updating the advanced modified hole;
the initial mining strip determining unit is used for determining the area covered by the gas extraction hole as an initial mining strip;
the fluidization exploitation equipment conveying unit is used for arranging a vertical shaft to convey the fluidization exploitation equipment to an initial exploitation strip;
and the working mining strip determining unit is used for determining the initial mining strip as the working mining strip of the coal bed in the area to be mined.
Specifically, a detection hole, an advance modification hole, a gas extraction hole and a grouting filling hole in the area to be mined are sequentially arranged along the advancing direction of the fluidized mining equipment; the detection hole and the advanced modification hole are arranged in front of the fluidized mining equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
The grouting filling hole determining module specifically comprises:
and the gas extraction hole updating unit is used for determining the advanced modified hole as a gas extraction hole.
The gas extraction hole determining unit specifically comprises:
and the advanced modified hole updating subunit is used for determining the detection as the advanced modified hole.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (8)
1. A deep coal resource fluidization exploitation method is characterized in that the method comprises the following steps:
determining a working mining stripe of a coal bed in a region to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
fluidizing the coal mine at the working mining strip by using fluidized mining equipment;
extracting the coal mine subjected to fluidization treatment through the coal gas extraction hole;
taking the coal gas extraction hole after the extraction fluidization treatment as a grouting filling hole, and updating the coal gas extraction hole;
filling grouting into the coal seam goaf through the grouting filling holes; the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to fluidization treatment;
the determining of the working mining strip of the coal seam in the area to be mined specifically comprises:
arranging a row of drill holes as detection holes in an area to be mined; the drill hole penetrates through a geological layer on the coal seam in the area to be mined;
after the geological parameters of the area to be mined are detected through the detection holes, taking the detection holes as advanced modification holes, and arranging a row of drill holes in parallel with the advanced modification holes as updated detection holes;
after the coal bed in the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modification hole, determining the advanced modification hole as a gas extraction hole, and updating the advanced modification hole;
determining the area covered by the gas extraction hole as an initial extraction strip;
arranging a vertical shaft to convey fluidized mining equipment to the initial mining strip;
and determining the initial mining band as a working mining band of the coal seam in the area to be mined.
2. The deep coal resource fluidization mining method according to claim 1, wherein the detection hole, the advanced modification hole, the gas extraction hole and the grouting filling hole in the area to be mined are sequentially arranged along the advancing direction of the fluidization mining equipment; the probing hole and the advanced modified hole are arranged in front of the fluidization mining equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
3. The deep coal resource fluidization mining method according to claim 2, wherein the updating of the gas extraction hole specifically comprises:
and determining the advanced modified hole as a gas extraction hole.
4. The deep coal resource fluidized mining method of claim 2, wherein the updating advanced modified holes specifically comprise:
the probe was determined to be a lead modified well.
5. A deep coal resource fluidization mining system, characterized in that, the system includes:
the working mining strip determining module is used for determining the working mining strip of the coal bed in the area to be mined; a plurality of gas extraction holes which are arranged in rows are arranged at the working mining strip;
the fluidization treatment module is used for enabling fluidization mining equipment to carry out fluidization treatment on the coal mine at the working mining strip;
the coal mine extraction module is used for extracting the coal mine subjected to fluidization treatment through the coal gas extraction hole;
the grouting filling hole determining module is used for taking the coal gas extraction hole after the coal mine is subjected to extraction fluidization treatment as a grouting filling hole and updating the coal gas extraction hole;
the grouting module is used for filling grouting into the coal seam goaf through the grouting filling hole; the coal seam goaf is formed by fluidizing the coal seam in the area to be mined and extracting the coal mine subjected to fluidization treatment;
the working mining band determination module specifically includes:
the detection hole setting unit is used for setting a row of drill holes as detection holes in the area to be mined; the drill hole penetrates through a geological layer on the coal seam in the area to be mined;
the advanced modified hole determining unit is used for taking the detection hole as an advanced modified hole after the geological parameters of the area to be mined are detected through the detection hole, and arranging a row of drill holes in parallel with the advanced modified hole as an updated detection hole;
the coal gas extraction hole determining unit is used for determining the advanced modified hole as a coal gas extraction hole and updating the advanced modified hole after the coal bed in the area to be mined is subjected to preheating rock breaking modification treatment through the advanced modified hole;
the initial mining strip determining unit is used for determining the area covered by the gas extraction hole as an initial mining strip;
the fluidized mining equipment conveying unit is used for arranging a vertical shaft to convey fluidized mining equipment to the position of the initial mining strip;
and the working mining strip determining unit is used for determining the initial mining strip as the working mining strip of the coal bed in the area to be mined.
6. The deep coal resource fluidization exploitation system of claim 5, wherein the detection hole, the advanced modification hole, the gas extraction hole and the grouting filling hole in the area to be exploited are sequentially arranged along the advancing direction of the fluidization exploitation device; the probing hole and the advanced modified hole are arranged in front of the fluidization mining equipment; the gas extraction hole and the grouting filling hole are arranged behind the fluidized mining equipment.
7. The deep coal resource fluidization mining system according to claim 6, wherein the grouting filling hole determination module specifically comprises:
and the gas extraction hole updating unit is used for determining the advanced modified hole as a gas extraction hole.
8. The deep coal resource fluidization mining system according to claim 6, wherein the gas extraction hole determining unit specifically comprises:
and the advanced modified hole updating subunit is used for determining the detection as the advanced modified hole.
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