CN112127944B

CN112127944B - Underground sump dynamic sump cleaning method

Info

Publication number: CN112127944B
Application number: CN202010987618.7A
Authority: CN
Inventors: 魏海文; 孙洪亮; 张晋红; 姬艳波; 刘世凯; 陈忠林; 牛晋波
Original assignee: Jincheng Blue Flame Coal Industry Co ltd
Current assignee: Jincheng Blue Flame Coal Industry Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2023-04-21
Anticipated expiration: 2040-09-18
Also published as: CN112127944A

Abstract

The invention belongs to the technical field of underground water treatment, and particularly relates to an underground water sump dynamic sump cleaning method which solves the problems that manpower and material resources are wasted and operation risks are increased in the traditional sump cleaning. The method comprises the following steps: s1: dynamically discharging sewage; the underground sewage is discharged to a connecting port between the main water bin and the auxiliary water bin through a water pump and a drain pipe of a main roadway and/or an additional pipeline in the auxiliary water bin, then flows into the small water absorption well from the connecting port, and is discharged to the well while being stirred, so that the sewage is discharged to the well, and the instant-discharging instant-cleaning water bin is dynamically cleaned, and the sewage is directly discharged to the well; s2: sewage treatment is carried out in an aboveground sewage plant. The invention can realize the discharging and cleaning when being discharged to the well while stirring, and prevent sewage from depositing in the small water absorption well and the additional pipeline; the waterproof embankment prevents coal slime from entering the water bin; the problems of large equipment occupation, large installation space required to be dug in underground sewage treatment, large operation danger coefficient, multiple working procedures and low working efficiency in underground sewage treatment are solved.

Description

Underground sump dynamic sump cleaning method

Technical Field

The invention belongs to the technical field of underground water treatment, and particularly relates to an underground water sump dynamic sump cleaning method.

Background

The underground operation environment of the coal mine is special, the sewage often contains cinder or coal slime (mainly coal slime), the sewage is discharged to a water sump (a main water sump and an auxiliary water sump) through a drainage pipe in a main roadway, and the coal slime in the water is deposited and accumulated in the main water sump and the auxiliary water sump to influence the capacity of the water sump. The coal mine safety regulations prescribe that: the sludge in the water sump, the sedimentation tank and the ditch should be cleaned in time. The coal mine traditional cleaning bin is firstly blocked at the inlet of the clean water bin to be cleaned, and a professional team loads the bin slime water into a mine car through manual or special equipment and then transports the bin slime water to the ground gangue, so that manpower and material resources are wasted, the operation risk is increased, the operation efficiency is low, and the later-stage environmental treatment is involved.

The Chinese patent No. 108525356A discloses a method for treating coal slime in an underground water sump, which comprises the following steps of firstly isolating the water sump to be cleaned, plugging the water inlet of the water sump to be cleaned by using a plug, closing a communication valve of a water suction well, and opening a drainage pump to minimize the water level in the water sump to be cleaned; extracting the coal slime, fully stirring the coal slime by using a slime stirring device, sucking the coal slime by using a slurry machine, and fully stirring the coal slime by introducing into a stirring box, wherein the coal slime is divided into thick coal slime and thin coal slime; conveying the thick coal slime to the ground by using a tape machine; sequentially passing the dilute coal slime through a filtering buffer device and a filter pressing device to respectively form a coal slime cake and backwater, conveying the coal slime cake to the ground through a mine car, and sending the backwater to other water bins through a conveying pipeline; after the coal slime cleaning work is finished, the plugs are removed to open the valves, so that the water sump to be cleaned circulates. The invention of China patent CN108266224A discloses a coal mine underground water sump cleaning process method and equipment thereof, and the process scheme is as follows: (1) the underground sump slime water (001) is divided into four parts of materials after being treated by underground sump dredging equipment (002); (2) the overflow water is circularly used in a circulating water pond (008) after being precipitated in a precipitation pond (004), and the bottom sedimentation material is stirred by blast air of an air pipe and then is sent to a filter press (007) through a slurry pump (006); (3) filtering by a filter press (007), then, circulating filtrate water to a circulating water tank (008), and enabling a filter cake to a raw coal belt conveyor (009); reduces the cleaning frequency of the water sump, shortens the one-time cleaning time and improves the cleaning quality. However, the two patent application documents have complex structures, need to be filtered underground, are greatly influenced by underground conditions, have poor safety and have high cost.

Disclosure of Invention

The invention aims to solve the problems and provides a method for dynamically clearing a downhole water sump.

The invention is realized by adopting the following technical scheme: a method for dynamically clearing a downhole water sump comprises the following steps:

s1: dynamically discharging sewage; the underground sewage is discharged to a connecting port between the main sump and the auxiliary sump through a water pump and a drain pipe of a main roadway and/or an additional pipeline in the auxiliary sump, then flows into a plurality of small water absorption wells at one side of the connecting port from the connecting port, the sewage discharged into the small water absorption wells is immediately stirred by a stirrer in the small water absorption wells and is directly discharged to the well through a water pump at the top of the small water absorption wells, so that the instant-discharge instant-clean sump dynamic cleaning is realized, the sewage is directly discharged to the well, and the coal slime in the sewage is prevented from being deposited in the sump or the wells;

when the sewage discharge amount is increased, the sewage flowing into the small water absorption well overflows from the small water absorption well to the connecting port and the water bin, and coal slime in the overflowed sewage is blocked by the waterproof dike in the water bin;

s2: sewage is treated in an aboveground sewage plant.

Furthermore, the main water bin or the auxiliary water bin in the step S1 is used for periodically and alternately discharging water from the single bin, and the periodically and alternately discharging water from the single bin is realized by additionally arranging a valve on a pipeline.

Further, the water pump at the top of the water absorption small well in the step S1 adopts high-pressure water in a downhole high-pressure water pipe as cooling water.

Further, in S1, the distance between the end of the additional pipe and the small water-absorbing well is 50m.

Further, in S1, the distance that the end of the additional pipe extends out of the waterproof dike is 1m.

Further, the sewage treatment in S2 is carried out by settling by a sand settling and horizontal flow settling tank, an inclined tube settling tank and a valveless filter tank, entering a rake type concentration tank for concentration after settling, then transporting to a filter pressing workshop by a sludge screw pump, and loading for outward transportation and sales after filter pressing.

Compared with the prior art, the invention has the beneficial effects that:

1. after the sewage is discharged to the small water absorption well, the sewage is discharged to the well while stirring (namely, sediment in the water sump is stirred, the sediment is suspended in water in the water sump and is directly discharged to the ground by the water pump), so that the sewage is discharged immediately, and the sewage is prevented from being deposited in the small water absorption well and the additional pipeline;

2. the sewage is discharged into the connecting port and the water absorption small well from the additionally arranged pipeline, so that the deposition of coal slime in the sewage in the water bin is avoided;

3. on one hand, the waterproof dike prevents the sewage in the additionally arranged pipeline from flowing back into the water sump when being discharged, and on the other hand, when the water quantity is increased, the water in the water absorption small well overflows to the water sump to intercept the coal slime in the overflowed sewage by the waterproof dike so as to prevent the coal slime from entering the water sump;

4. according to the sewage treatment device, sewage is directly discharged to the well from the underground, sewage treatment is carried out on the well, the underground installation of sewage treatment equipment and the underground sewage treatment are not needed, and the problems that equipment occupation is large, an installation space is needed to be dug, the operation difficulty of the underground sewage treatment is large, the operation danger coefficient is large, the working procedures are multiple and the working efficiency is low in the underground sewage treatment are solved;

5. the two water bins are alternately used, and the two water bins can mutually impact deposited coal slime.

Drawings

FIG. 1 is a schematic view of a sump according to the present invention;

FIG. 2 is a schematic view of a water-absorbing well according to the present invention;

in the figure: 1-drain pipe, 2-main water bin, 3-auxiliary water bin, 4-additional pipeline, 5-connecting port, 6-small water absorption well, 7-stirrer, 8-water pump, 9-waterproof dike, 10-valve and 11-main lane.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which is to be read in light of the specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

Referring to fig. 1 to 2, the present invention provides a technical solution: a method for dynamically clearing a downhole water sump comprises the following steps:

s1: dynamically discharging sewage; the underground sewage is discharged to a connecting port 5 between the main sump 2 and the auxiliary sump 3 through a water pump and a drain pipe 1 of a main roadway and through an additional pipeline 4 in the main sump 2 and/or the auxiliary sump 3, then flows into a plurality of small water absorption wells 6 on one side of the connecting port 5 from the connecting port 5, the sewage discharged into the small water absorption wells 6 is immediately stirred by a stirrer 7 in the small water absorption wells 6 and is simultaneously directly discharged to the well through a water pump 8 at the top of the small water absorption wells 6, so that the instant-discharge instant-clean sump dynamic cleaning is realized, the sewage is directly discharged to the well, and the deposition of coal slime in the sewage in the sump or the wells is avoided;

when the sewage discharge amount is increased, the sewage flowing into the small water absorption well 6 overflows from the small water absorption well 6 into the connecting port 5 and the water sump, and the coal slime in the overflowed sewage is blocked and intercepted by the waterproof dike 9 in the water sump, so that the overflow of the coal slime into the water sump is greatly reduced;

s2: sewage is treated in an aboveground sewage plant.

The main water bin 2 or the auxiliary water bin 3 in the S1 is periodically and alternately drained, and the periodically and alternately drained water is realized by additionally arranging a valve 10 on a pipeline 4; if water enters from the main water bin 2, the water reaches the small water absorption well 6 through the additional pipeline 4 and then reaches the auxiliary water bin 3; after a certain period, the water is exchanged to the auxiliary water bin 3, so that deposited coal slime can be washed out by changing the water flow direction to impact the deposited coal slime.

The water pump 8 at the top of the small water absorption well 6 in the S1 adopts high-pressure water (clean) in a downhole high-pressure water pipe as cooling water, and replaces sewage in an original water bin with the high-pressure water (clean) as cooling water of the water pump, so that the sewage draining capacity of the water pump is increased, the accident rate of the water pump is reduced, the phenomenon that coal slime in the sewage blocks a cooling pipeline in the operation process of the water pump is prevented, or the coal slime is condensed between packing and a shell, and gaps exist between the packing and the shell, so that the possibility of burning the packing is avoided; air ingress, water volume reduction or pump failure.

The distance from the tail end of the additional pipeline 4 to the small water absorption well 6 in the S1 is 50m.

The tail end of the additional pipeline 4 in the S1 extends out of the waterproof dike 1m; the waterproof dike 9 is provided with a mounting hole, the waterproof dike 9 is mounted in the mounting hole, and when sewage is discharged from the tail end of the additionally arranged pipeline 4, the waterproof dike 9 blocks sewage from flowing backwards into the water bin.

S2, sewage treatment, namely, settling by a sand settling and advection sedimentation tank, an inclined tube sedimentation tank and a valveless filter tank, concentrating the sediment in a rake type concentration tank, pumping the sediment to a filter pressing workshop by a sludge screw pump, and loading the sediment to the outside for sale after filter pressing; the whole treatment process is operated on the ground, equipment purchase and team arrangement are not needed, and the method is economical and environment-friendly.

The sewage is discharged to the connecting port 5 from the drain pipe 1 through the additionally arranged pipeline 4 in the water sump, and the sewage does not flow through the water sump, so that the coal slime in the sewage is prevented from depositing in the water sump.

This application is by original behind reaching certain water level open pump drainage, adjusts to balanced drainage, and the drainage is clear promptly (promptly after sewage is discharged to the little well 6 that absorbs water, in time will absorb water the little well 6 in the sewage on the well with stirring the limit), and the day is clear day knot, reaches the developments effect of clearing the storehouse, directly arranges sewage on the well for the water level in the little well 6 that absorbs water remains low water level throughout, prevents the coal slime and deposits in the little well 6 that absorbs water and add pipeline 4.

The water pump 8 in the water sump is used for directly discharging the sewage in the small water absorption well 6 to the well through the water pump 8 by utilizing the characteristic that the water pump 8 in the water sump is suitable for mine water with the solid particle content of not more than 1.5 percent and the granularity of less than 0.5 millimeter.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A method for dynamically clearing an underground water sump is characterized in that: the method comprises the following steps:

s1: dynamically discharging sewage; the underground sewage is discharged to a connecting port (5) between the main sump (2) and the auxiliary sump (3) through a water pump from a drain pipe (1) of a main roadway through an additional pipeline (4) in the main sump (2) and/or the auxiliary sump (3), then flows into a plurality of small water absorption wells (6) at one side of the connecting port (5) from the connecting port (5), the sewage discharged into the small water absorption wells (6) is immediately stirred by a stirrer (7) in the small water absorption wells (6) and is simultaneously directly discharged to the well through a water pump (8) at the top of the small water absorption wells (6), so that the instant-discharge clean sump dynamic cleaning is realized, the sewage is directly discharged to the well, and the coal slime in the sewage is prevented from being deposited in the water sump or the small wells;

when the sewage discharge amount is increased, the sewage flowing into the small water absorption well (6) overflows from the small water absorption well (6) to the connecting port (5) and the water bin, and the coal slime in the overflowed sewage is blocked by the waterproof dike (9) in the water bin;

the main water bin (2) or the auxiliary water bin (3) is used for periodically and alternately discharging water from a single bin, and the periodically and alternately discharging water from the single bin is realized by additionally arranging a valve (10) on a pipeline (4); water enters from the main water bin (2), reaches the small water absorption well (6) through the additionally arranged pipeline (4), and then reaches the auxiliary water bin (3); after a certain period, exchanging the slurry into water from an auxiliary water bin (3), and flushing the slurry deposited in the bin by impacting the deposited slurry by changing the water flow direction;

s2: sewage is treated in an aboveground sewage plant.

2. The method for dynamically clearing a downhole sump according to claim 1, wherein: the water pump (8) at the top of the small water absorption well (6) in the S1 adopts high-pressure water in a high-pressure water pipe in the pit as cooling water.

3. The method for dynamically clearing a downhole sump according to claim 1, wherein: the distance from the tail end of the additional pipeline (4) to the small water absorption well (6) in the S1 is 50m.

4. The method for dynamically clearing a downhole sump according to claim 1, wherein: the distance of the tail end of the additional pipeline (4) in the S1 extending out of the waterproof dike (9) is 1m.

5. The method for dynamically clearing a downhole sump according to claim 1, wherein: s2, sewage treatment, namely, sediment is carried out in a sediment settling and advection sedimentation tank, an inclined tube sedimentation tank and a valveless filter tank, the sediment enters a rake type concentration tank for concentration, and then is pumped to a filter pressing workshop by a sludge screw pump, and is carried out outside for sale after filter pressing.