CN112546681B - Construction method for water burst drainage flow channel of underground mine of coal mine and water burst purification system - Google Patents
Construction method for water burst drainage flow channel of underground mine of coal mine and water burst purification system Download PDFInfo
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- CN112546681B CN112546681B CN202011422781.5A CN202011422781A CN112546681B CN 112546681 B CN112546681 B CN 112546681B CN 202011422781 A CN202011422781 A CN 202011422781A CN 112546681 B CN112546681 B CN 112546681B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
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Abstract
The invention provides a construction method of a water gushing drainage runner of a mine underground coal mine and a water gushing purification system, wherein a slope ramp mine water diversion ditch is divided into a plurality of sections by a plurality of baffles, each section is provided with a cyclone filter, and a tangential inlet pipe and an overflow pipe of the cyclone filter are respectively communicated with an upstream section and a downstream section of the same baffle; the design and adjustment of the structure of the flow guide trench are carried out in a sectional mode by means of the topographic characteristics of a slope of underground water burst, the separation of coal mud particles in water flow is realized by changing a flow field by means of the gravity of the water flow, and the aim of putting clear water into a warehouse is fulfilled.
Description
Technical Field
The invention belongs to the fields of construction of an underground water gushing diversion trench of a coal mine, water gushing purification equipment and the like, and particularly relates to a construction method of an underground mine water gushing diversion runner of the coal mine and a water gushing purification system.
Background
Most of the existing underground coal mine slope mine water treatment modes are excavation ditches, and mine water is guided along the ditches to enter a sump for precipitation treatment. However, a lot of coal slime particles are carried in the flowing process of the mine water, the coal slime particles are rapidly settled and deposited in the trench to form a water bed, and the mine water is spread to a working face when the height of the water bed is higher than the ground. And the length of the trench is longer, the post-treatment difficulty of the trench siltation is higher, and the consumption of manpower and material resources is higher.
The existing clearing equipment is generally limited in use due to limited downhole space, difficulty in moving along with the advancement of a working face and difficulty in dealing with the situation of variable supplied materials. Therefore, it is necessary to improve the existing underground diversion trench form and construction method of the coal mine so as to purify and collect the underground gushing water to a water sump in a limited underground space at low cost.
Disclosure of Invention
Based on the purpose, the invention provides a construction method of a water gushing drainage runner of an underground mine of a coal mine and a water gushing purification system.
The technical scheme adopted by the invention is as follows: a construction method for a water burst drainage runner of an underground mine of a coal mine comprises the following steps:
s1: dividing a mine water trench of an underground ramp into a plurality of sections of paths, wherein each section of path has a certain height drop downwards along the ramp due to the length of each section of path, each section of path is isolated from each other through a baffle, and the most downstream path is communicated with a water sump;
s2: a lateral leading-out flow channel is arranged at the position, close to the baffle, of the tail end of each section of the path;
s3: a pit groove is dug at the position corresponding to the side surface of each section of path, a rotational flow cylinder structure is arranged in each pit groove, each rotational flow cylinder structure comprises an upper straight cylinder section and a lower conical cylinder section, an overflow pipe is arranged at the central position of each rotational flow cylinder, a tangential inlet pipe is arranged at the upper end of the side wall of each straight cylinder section, and the tangential inlet pipe is communicated with the lateral leading-out flow channel;
s4: guiding the outlet of the overflow pipe in the step S3 to a downstream path adjacent to the path of the lateral outflow channel through a pipeline or a trench, namely respectively fluidly communicating an upstream path and a downstream path of the two adjacent paths by a tangential inlet pipe and an overflow pipe of the same cyclone cylinder structure, wherein the upstream path and the downstream path are separated by a baffle;
s5: and a coal slime lifting device is arranged at the bottom of each cyclone cylinder structure and used for scraping deposited coal slime at the bottom of the cyclone cylinder structure and conveying the deposited coal slime to the outside of the cyclone cylinder structure.
In the step S2, the end of the lateral outlet flow path is provided with a deposition groove.
In the step S2, the lateral extraction channel is a straight line flow segment, for example, the lateral extraction flow channel is a straight pipe, the end of the straight pipe is connected to a deposition groove, the deposition groove is a groove structure with a depth greater than the diameter of the straight pipe and is in closed communication with the straight pipe, such as a box body detachably screwed below the end of the straight pipe; or the lateral leading-out flow passage is a long straight groove, and the deposition groove is dug at the tail end of the long straight groove and has a depth larger than that of the long straight groove.
In the step S5, the coal slurry lifting device is selected as a grating scraper conveyor, which includes a grating scraper conveyor belt, a sleeve, and a driving device, the grating scraper conveyor belt is mainly a grating conveyor belt, the conveyor belt is provided with a plurality of scrapers at equal intervals, and the scrapers are perpendicular to the plane of the conveyor belt at the installation position; the sleeve is a cylinder shell which is obliquely arranged in the cyclone cylinder structure, the grid type conveyor belt is arranged in the cylinder shell and circularly rotates around a first transmission shaft positioned at the upper end of the cyclone cylinder structure and a second transmission shaft positioned at the bottom of the cyclone cylinder structure, and the driving device drives the first transmission shaft to rotate so as to drive the grid type conveyor belt to rotate. Telescopic upper end sets up the coal slime export, grid scraper conveyor is in the external band conveyer in coal slime exit.
Further, grid scraper conveyor is still including setting up the third transmission shaft in whirl bobbin configuration bottom, the third transmission shaft is in same horizontal position with the second transmission shaft, makes grid scraper conveyor has one section horizontal segment in whirl bobbin configuration bottom, and this horizontal segment is supplementary the more abundant contact siltation of grid scraper conveyor is at the coal slime of whirl bobbin configuration bottom, reinforcing grid scraper conveyor's cleaning efficiency.
The invention also comprises a water purification system for the water inrush of the underground mine of the coal mine, which comprises a plurality of baffles, wherein the baffles divide the mine water diversion ditch of the ramp into a plurality of sections; the coal mine water pre-separation device comprises a plurality of cyclone filters, wherein each cyclone filter corresponds to a section, each cyclone filter comprises a tangential inlet pipe, a spiral feeding section, a cyclone separation section, a deposition cone hopper and a coal slime lifting device, the tangential inlet pipe is tangentially connected with the spiral feeding section, the spiral feeding section is a spiral volute, the spiral flow of mine water entering the cyclone filters is strengthened, the pre-separation of larger particles in the mine water is completed, the cyclone separation section is arranged below the spiral feeding section, the particles of the mine water entering the cyclone separation section are rapidly settled into the deposition cone hopper below the cyclone separation section under the action of gravity and centrifugal force, and the mine water is discharged out of the cyclone filters through the coal slime lifting device;
the center of the rotational flow filter is also provided with an overflow pipe, the overflow pipe returns the purified mine water to the mine water diversion ditch, and the tangential inlet pipe and the overflow pipe are respectively communicated with an upstream section and a downstream section of the same baffle; the tangential inlet pipe with be provided with direct current buffer segment between the section is intermitted to the upper reaches, direct current buffer segment's end is provided with the sedimentation tank, the sedimentation tank is greater than the straight tube diameter for the degree of depth and with the closed intercommunication of straight tube.
The coal slurry lifting device may be selected from conventional lifting devices, or a grate scraper conveyor as described above.
The invention has the following advantages:
1. the principle of multistage cyclone separation is adopted to provide a method which can effectively solve the problems of mine water spreading and ditch coal slime sludge caused by increasing the height of a water bed due to the entrainment of the slope ramp diversion ditch coal slime, and save the manpower and material resources for treating the sludge;
2. the multi-section cleaning system is arranged along the topographic trend of the slope, the drainage trench is not required to be changed, the energy consumption of the purifying device is saved by the aid of water flow gravity,
3. the mine water enters the direct-current buffer section firstly before entering the cyclone filter, and larger particles or impurities directly enter a sedimentation tank at the tail end of the direct-current buffer section under the inertia effect due to the large specific gravity of the mine water and the strong fluid following property, so that the content of the large particles entering the cyclone filter device is reduced, and in addition, the sedimentation tank at the tail end of the direct-current buffer section is used for collecting and storing the larger particles and is convenient for manual excavation treatment at regular intervals;
4. the design of the grid scraper conveyor, the inclined arrangement in the cyclone filter can ensure that the coal slime particles play a role in dewatering when the sludge and the coal slime are cleaned.
Drawings
FIG. 1 is a first schematic diagram of a water burst purification system according to the present invention;
FIG. 2 is a schematic diagram of a water burst purification system according to the present invention;
FIG. 3 is a schematic view of a cyclone filter according to the present invention;
FIG. 4 is a schematic view of the construction of the DC buffer section of the cyclone filter of the present invention;
FIG. 5 is a schematic view of the construction of the grid scraper conveyor of the present invention;
in the figure: 1. the device comprises a mine water diversion ditch, 2, a baffle, 3, a cyclone filter, 4, a mine water inlet, 5, a clean water outlet, 6, a sedimentation tank, 7, a coal slime lifting device, 8, an overflow pipe, 9, a driving device, 10, a grid scraper conveyer belt, 11, a first transmission shaft, 12, a second transmission shaft, 13 and a tangential inlet pipe.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the disclosure herein.
Referring to the drawings, the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present disclosure can be implemented, so that the present disclosure has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. Meanwhile, the positional limitation terms used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present invention without substantial changes in the technical content.
FIG. 1 is a first structural view of a trench cleaning system of the present invention, and FIG. 2 is a second structural view of the trench cleaning system of the present invention; as shown in the figure, the underground mine water burst purification system of the coal mine comprises a plurality of baffles, wherein the baffles 2 divide a slope mine water diversion ditch 1 into a plurality of sections; each cyclone filter 3 corresponds to one section, the structure of each cyclone filter 3 is shown in fig. 3, each cyclone filter 3 comprises a tangential inlet pipe 13, a spiral feeding section, a cyclone separation section, a sedimentation cone hopper and a coal slime lifting device, the tangential inlet pipe 13 is tangentially connected with the spiral feeding section, the spiral feeding section is a spiral volute and completes pre-separation of larger particles in mine water, the cyclone separation section is arranged below the spiral feeding section, the particles of the mine water entering the cyclone separation section are quickly settled into the sedimentation cone hopper below the cyclone separation section under the action of gravity and centrifugal force, and the mine water is discharged out of the cyclone filter through the coal slime lifting device 7; specifically, whirl filter 3 includes the straight section of thick bamboo section on upper portion and the cone section of lower part, the upper portion inside wall of straight section of thick bamboo section sets up to spiral case form, the cone section sets up to the deposit awl fill for collect the coal slime granule of whirl separation, whirl separation section is constituteed on straight section of thick bamboo lower part and the cone section upper portion, accomplishes main whirl separation function.
The center of the rotational flow filter 3 is also provided with an overflow pipe 8, the overflow pipe 8 returns the purified mine water to the mine water diversion ditch, and the tangential inlet pipe 13 and the overflow pipe 8 are respectively communicated with the upstream section and the downstream section of the same baffle 2; the tangential inlet pipe 13 with be provided with direct current buffering section between the district section of upper reaches, the end of direct current buffering section is provided with the sedimentation tank 6, sedimentation tank 6 is for the degree of depth to be greater than the straight tube diameter and with the closed intercommunication of straight tube. FIG. 4 is a schematic diagram of the structure of the DC buffer section of the cyclone filter of the present invention, wherein the DC buffer section can be a straight tube, the end of the straight tube is connected with a deposition groove 6, and the deposition groove is a groove structure with a depth greater than the diameter of the straight tube and in closed communication with the straight tube, such as a box body with detachable threads screwed below the end of the straight tube.
The coal slime lifting device is selected as a grating scraper conveyor which comprises a grating scraper conveyor belt, a sleeve and a driving device, and is shown in figure 5, the structure of the grating scraper conveyor belt is schematically shown, the main body of the grating scraper conveyor belt 10 is a grating conveyor belt, a plurality of scrapers are arranged on the conveyor belt at equal intervals, and the scrapers are arranged perpendicular to the plane of the conveyor belt at the installation position; the sleeve is a cylinder shell which is obliquely arranged in the cyclone filter 3, the grating type conveyor belt is arranged in the cylinder shell and circularly rotates around a first transmission shaft 11 positioned at the upper end of the cyclone filter and a second transmission shaft 12 positioned at the bottom of the cyclone filter, and the driving device 9 drives the first transmission shaft 11 to rotate, so that the grating type conveyor belt is driven to rotate. The upper end of the sleeve is provided with a coal slime outlet, and the grating scraper conveyor is externally connected with a belt conveyor at the coal slime outlet.
Further, grid scraper conveyor is still including setting up the third transmission shaft in whirl bobbin configuration bottom, third transmission shaft and second transmission shaft are in same horizontal position, make grid scraper conveyor has one end horizontal segment in whirl bobbin configuration bottom, and this horizontal segment is supplementary the more abundant contact siltation of grid scraper conveyor is at the coal slime of whirl bobbin configuration bottom, reinforcing grid scraper conveyor's cleaning efficiency.
The invention also discloses a construction method of the water gushing drainage channel of the underground mine of the coal mine, which forms the water gushing purification system of the coal mine, and the construction method comprises the following steps:
s1: dividing a mine water trench of an underground ramp into a plurality of sections of paths, wherein each section of path has a certain height drop downwards along the ramp due to the length of each section of path, each section of path is isolated from each other through a baffle, and the most downstream path is communicated with a water sump;
s2: a lateral leading-out flow channel is arranged at the position, close to the baffle, of the tail end of each section of the path;
s3: a pit groove is dug at the position corresponding to the side surface of each section of path, a rotational flow cylinder structure is arranged in each pit groove, each rotational flow cylinder structure comprises an upper straight cylinder section and a lower conical cylinder section, an overflow pipe is arranged at the central position of each rotational flow cylinder, a tangential inlet pipe is arranged at the upper end of the side wall of each straight cylinder section, and the tangential inlet pipe is communicated with the lateral leading-out flow channel;
s4: guiding the outlet of the overflow pipe in the step S3 to a downstream path adjacent to the path of the lateral outflow channel through a pipeline or a trench, namely, the tangential inlet pipe and the overflow pipe of the same cyclone cylinder structure are respectively communicated with an upstream path and a downstream path of the two adjacent paths in a fluid mode, and the upstream path and the downstream path are separated through a baffle;
s5: and a coal slime lifting device is arranged at the bottom of each cyclone cylinder structure and used for scraping deposited coal slime at the bottom of the cyclone cylinder structure and conveying the deposited coal slime to the outside of the cyclone cylinder structure.
In step S2, a deposition groove is provided at a terminal end of the lateral exit flow path.
The cyclone cartridge structure in the step S3 is the cyclone filter shown in fig. 3, and the coal slurry lifting device in the step S5 is the grate scraper conveyor.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A construction method for a water burst drainage runner of an underground mine of a coal mine comprises the following steps:
s1: dividing a mine water trench of an underground ramp into a plurality of sections of paths, wherein each section of path has a certain height drop downwards along the ramp due to the length of each section of path, each section of path is isolated from each other through a baffle, and the most downstream path is communicated with a water sump;
s2: a lateral extraction flow channel is arranged at the position, close to the baffle, of the tail end of each section of path, and a sedimentation tank is arranged at the tail end of the lateral extraction flow channel;
s3: a pit groove is dug at the position corresponding to the side surface of each section of path, a rotational flow cylinder structure is arranged in each pit groove, each rotational flow cylinder structure comprises an upper straight cylinder section and a lower conical cylinder section, an overflow pipe is arranged at the central position of each rotational flow cylinder, a tangential inlet pipe is arranged at the upper end of the side wall of each straight cylinder section, and the tangential inlet pipe is communicated with the lateral leading-out flow channel;
s4: guiding the outlet of the overflow pipe in the step S3 to a downstream path adjacent to the path of the lateral outflow channel through a pipeline or a trench, namely, the tangential inlet pipe and the overflow pipe of the same cyclone cylinder structure are respectively communicated with an upstream path and a downstream path of the two adjacent paths in a fluid mode, and the upstream path and the downstream path are separated through a baffle;
s5: and a coal slime lifting device is arranged at the bottom of each cyclone cylinder structure and used for scraping deposited coal slime at the bottom of the cyclone cylinder structure and conveying the deposited coal slime to the outside of the cyclone cylinder structure.
2. The construction method according to claim 1, wherein in step S2, the lateral extraction flow path is a straight tube, and a tip end of the straight tube is detachably connected to a deposition tank in close communication with the straight tube; or the lateral leading-out flow passage is a long straight groove, a sedimentation groove is dug at the tail end of the long straight groove, and the depth of the sedimentation groove is greater than that of the long straight groove.
3. The construction method according to claim 1 or 2, wherein in step S5, the coal slurry lifting device is selected from a grid scraper conveyor comprising a grid scraper conveyor belt, a sleeve, and a driving device, the grid scraper conveyor belt is mainly a grid conveyor belt, a plurality of scrapers are arranged at equal intervals on the grid conveyor belt, and the scrapers are arranged perpendicular to the plane of the conveyor belt at the installation position; the sleeve is a cylinder shell which is obliquely arranged in the cyclone cylinder structure, the grid type conveyor belt is arranged in the cylinder shell and circularly rotates around a first transmission shaft positioned at the upper end of the cyclone cylinder structure and a second transmission shaft positioned at the bottom of the cyclone cylinder structure, and the driving device drives the first transmission shaft to rotate so as to drive the grid type conveyor belt to rotate.
4. The construction method according to claim 3, further characterized in that the grid scraper conveyor further comprises a third transmission shaft arranged at the bottom of the cyclone cylinder structure, and the third transmission shaft and the second transmission shaft are in the same horizontal position, so that the grid scraper conveyor belt has a horizontal section at the bottom of the cyclone cylinder.
5. A cyclone filter comprises a tangential inlet pipe, a spiral feeding section, a cyclone separation section, a deposition cone hopper and a coal slime lifting device, wherein the tangential inlet pipe is tangentially connected with the spiral feeding section, the spiral feeding section is a spiral volute, the cyclone separation section is arranged below the spiral feeding section, the deposition cone hopper in a cone barrel shape is arranged below the cyclone separation section, and the coal slime lifting device is used for scraping deposited coal slime at the bottom of the cyclone filter and conveying the deposited coal slime to the outside of the cyclone filter;
an overflow pipe is also arranged in the center of the cyclone filter;
the other end, far away from the spiral feeding section, of the tangential inlet pipe is communicated with a direct current buffer section, one end of the direct current buffer section is an inlet, and the other end of the direct current buffer section is provided with a deposition groove.
6. The cyclone filter of claim 5 further characterized in that the straight flow buffering section is arranged as a straight pipe or a long straight groove, and the included angle between the axial direction of the straight flow buffering section and the axial direction of the tangential inlet pipe is an acute angle.
7. The cyclone filter of claim 5 or 6, wherein the coal slurry lifting device is selected from a grating scraper conveyor comprising a grating scraper conveyor belt, a sleeve and a driving device, the grating scraper conveyor belt body is a grating conveyor belt, a plurality of scrapers are arranged on the grating conveyor belt at equal intervals, and the scrapers are arranged perpendicular to the plane of the conveyor belt at the installation position; the cyclone cylinder structure is characterized in that the sleeve is a cylinder shell which is obliquely arranged in the cyclone cylinder structure, the grid type conveyor belt is arranged in the cylinder shell and rotates circularly around a first transmission shaft positioned at the upper end of the cyclone cylinder structure and a second transmission shaft positioned at the bottom of the cyclone cylinder structure, and the driving device drives the first transmission shaft to rotate so as to drive the grid type conveyor belt to rotate.
8. The cyclone filter of claim 7, further characterized in that the grate scraper conveyor further comprises a third drive shaft disposed at the bottom of the cyclone cylinder structure, the third drive shaft and the second drive shaft being at the same horizontal position, such that the grate scraper conveyor belt has a horizontal section at the bottom of the cyclone cylinder.
9. The underground mine water burst purification system for the coal mine comprises a plurality of baffles, wherein the baffles divide a ramp mine water diversion ditch into a plurality of sections; a cyclone filter according to any one of claims 5-8 provided in each section, the tangential inlet duct and the overflow duct of the cyclone filter being in communication with the upstream and downstream sections of the same baffle, respectively; the straight flow buffer section is disposed between the tangential inlet duct and the upstream block section.
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