CN220849760U

CN220849760U - Underground mine aquifer dredging system

Info

Publication number: CN220849760U
Application number: CN202322240967.4U
Authority: CN
Inventors: 姚嗣伟; 王施璐; 朱宗杰; 王世松; 孙仕平; 鲁万胜; 甘良周; 张雷
Original assignee: Anhui Magang Luohe Mine Co ltd
Current assignee: Anhui Magang Luohe Mine Co ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-04-26
Anticipated expiration: 2033-08-18

Abstract

The utility model discloses an underground mine aquifer dredging system, and belongs to the field of mining. The water draining pipe comprises an upper outer sleeve, an upper inner sleeve, a lower sleeve and a draining pipe; the upper end of the upper outer sleeve extends out of the ground surface, and the lower end of the upper outer sleeve extends to the upper bedrock layer; the upper end of the lower sleeve pipe extends into the lower bedrock layer and does not extend into the water-containing layer, the lower end of the lower sleeve pipe extends into the roadway and is connected with a drain pipe, and a valve is arranged on the drain pipe; the upper end of the upper inner sleeve is fixedly connected with the upper outer sleeve, the lower end of the upper inner sleeve stretches into the upper end of the lower sleeve, and the part of the upper inner sleeve, which is positioned in the aquifer, is of a flower pipe structure. The utility model solves the problems of high difficulty in underground drainage construction and easy water seepage and water leakage by improving the integral structure of the aquifer drainage system.

Description

Underground mine aquifer dredging system

Technical Field

The utility model belongs to the field of mining, and particularly relates to an underground mine aquifer dredging system.

Background

In modern society, with the high-speed development of science and technology, the demand for mineral resources is rapidly increased, foreign ores are affected by international relations, ore price fluctuation is large, ore resource supply is controlled by foreign countries, and therefore, the country encourages the development and utilization of domestic mineral resources in order to get rid of the dilemma.

Although the total amount of domestic mineral resources is large, the mining of large ores, rich ores and dew is little, and the mining rate of underground mines can reach 90%. The exploitation of underground mines is affected by hydrogeology more or less, the water-bearing layer is mostly positioned at the upper part of the ore body, and the underground mine has large thickness and high strength, so that the underground drilling difficulty is large, and the exploitation difficulty and the cost investment are easy to increase. At present, comprehensive treatment measures of 'placing, blocking, dredging, discharging, intercepting and avoiding' are generally adopted for the aquifer, and different treatment methods are aimed at the aquifer under different hydrogeological conditions, wherein the treatment measures mainly comprise 'dredging' can permanently solve the problem of the aquifer. The dredging is usually carried out by adopting methods such as underground water collecting wells, underground water drainage drilling holes, drainage laneways and the like, and the construction cost is high.

For example, the Chinese patent application number is: CN201811320864.6, publication date: patent literature on the 3 rd month 12 th 2019 discloses a reasonable utilization device and method of mine aquifer drainage water, which comprises drainage drill holes arranged between a coal seam roof aquifer and a mining working face roadway, one ends of the drainage drill holes are communicated with the coal seam roof aquifer, the other ends of the drainage drill holes are connected to a filtering device arranged in the mining working face roadway through orifice devices, and water outlet ends of the filtering device are connected to mining working face equipment.

For another example, chinese patent application No.: CN202023081530.3, publication date: 2021, 10 months and 22 days discloses a roadway drainage system, and relates to the technical field of roadway drainage. The roadway drainage system comprises a roadway and a power generation device, wherein an aquifer is arranged above a top plate of the roadway, and the roadway is communicated with the aquifer through drainage drill holes; the power generation device is positioned in the roadway, the water inlet of the power generation device is communicated with the bottom end of the drainage drill hole through a first water conveying pipe, and the first water conveying pipe is a stainless steel pipe.

The above two schemes are common device structures for dredging water from an underground roadway communicating pipeline to an upper water-bearing layer, however, the direct construction mode from underground has the problems that on one hand, the underground construction difficulty is high, and the sleeve is difficult to fix when extending into the upper part of the water-bearing layer, on the other hand, the control effect of the structure on dredging water is not good, and especially for the end part of a pipeline at the junction of the water-bearing layer and a bedrock layer, water leakage and water seepage are easy to occur due to concentration of water flow pressure of the water-bearing layer, and even the pipeline is used.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems that the existing underground mine aquifer dredging construction is relatively difficult and water seepage and water leakage are easy to occur, the utility model provides the underground mine aquifer dredging system, which solves the problems that the underground dredging construction is relatively difficult and water seepage and water leakage are easy to occur by improving the integral structure of the aquifer dredging system.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

An underground mine aquifer drainage system comprises an upper outer sleeve, an upper inner sleeve, a lower sleeve and a drain pipe; the upper end of the upper outer sleeve extends out of the ground surface, and the lower end of the upper outer sleeve extends to the upper bedrock layer; the upper end of the lower sleeve pipe extends into the lower bedrock layer and does not extend into the water-containing layer, the lower end of the lower sleeve pipe extends into the roadway and is connected with a drain pipe, and a valve is arranged on the drain pipe; the upper end of the upper inner sleeve is fixedly connected with the upper outer sleeve, the lower end of the upper inner sleeve stretches into the upper end of the lower sleeve, and the part of the upper inner sleeve, which is positioned in the aquifer, is of a flower pipe structure.

As a further improvement of the technical scheme, the upper inner sleeve is positioned at the junction of the stratum basale and the aquifer, and the outer side of the upper inner sleeve is coated with a rubber water stop.

As a further improvement of the technical scheme, the lower sleeve is positioned at the junction of the lower bedrock layer and the roadway, and the outer side of the lower sleeve is coated with a rubber water stop.

As a further improvement of the technical scheme, the lower end of the lower sleeve is connected with an inlet of a three-way valve, and two outlets of the three-way valve are respectively connected with a drain pipe through a valve.

As a further improvement of the technical scheme, the drain pipe is provided with a pressure reducing valve.

As a further improvement of the technical scheme, the part of the lower sleeve extending into the roadway is connected with the anchor rod through a steel wire rope, and the anchor rod is inserted into the lower stratum.

As a further improvement of the technical proposal, the steel wire rope and the anchor rod are provided with at least two groups.

As a further improvement of the technical scheme, the diameter of the flower pipe on the upper inner sleeve is smaller than that of the rest positions, and the aperture of the joint of the flower pipe and the rest positions is of a gradual change structure.

As a further improvement of the technical scheme, the upper end of the upper inner sleeve and the upper outer sleeve are welded and connected through a steel plate.

As a further improvement of the technical scheme, the upper ends of the upper inner sleeve and the upper outer sleeve are provided with a wellhead cover.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) The underground mine aquifer drainage system has the advantages that the structure of the drainage system is uniquely improved, lower drainage construction is firstly carried out in a roadway, then the upper part of the ground surface is drilled, the upper inner sleeve is lowered to the lower sleeve, the underground construction is changed into overground construction, the construction difficulty is reduced, and the upper inner sleeve positioned in the aquifer is arranged into a flower pipe structure, so that the water flow speed of the aquifer entering the sleeve can be effectively controlled, the impact force of water flow on the end part of a pipeline is reduced, and the occurrence of water seepage and water leakage is reduced;

(2) According to the underground mine aquifer drainage system, the rubber water stop is arranged at the joint of the aquifer, the bedrock layer and the roadway, the upper inner sleeve can be quickly fixed when extending to the lower sleeve through expansion fixation of the rubber water stop, the tightness of the joint is improved, and water seepage and water leakage are reduced;

(3) According to the underground mine aquifer drainage system, the three-way valve is connected to the lower sleeve outlet in the roadway, so that two drainage pipes can be connected simultaneously, water in the aquifer is drained to a required construction area through different drainage pipes, the water demand of the underground mine is met, the water cost of the mine is reduced, and meanwhile, the structure can be used for controllably and rapidly draining a thick and hard aquifer, so that water damage factors are reduced;

(4) The vertical geological drilling hole extending to the ground surface can be used as a water drainage channel of the aquifer and also can be used as a permanent hydrologic observation hole of the mine, the change condition of the water level of the drilling hole is observed by closing a valve after water is drained for a period of time, the hydrogeological parameters such as the permeability coefficient and the water guide coefficient of the aquifer are calculated to be compared with the hydrogeological parameters of the detailed investigation to study the change of the aquifer, and meanwhile, other hydrologic observation holes can be used for studying the relationship of the supplement, the diameter and the row of the aquifer between different areas through a water drainage test and are used as the basis of aquifer treatment.

Drawings

FIG. 1 is a schematic diagram of the upper part of a dredging system;

FIG. 2 is a schematic view of the mounting structure of the lower inner sleeve in the roadway;

FIG. 3 is a schematic diagram of the structure of a flower pipe of an aquifer;

FIG. 4 is a schematic diagram of the overall structure of the drainage system;

In the figure: 1. an upper outer sleeve; 2. an upper inner sleeve; 3. a flower tube; 4. a lower sleeve; 5. a drain pipe; 6. a surface; 7. an upper base layer; 8. a lower base layer; 9. an aquifer; 10. roadway; 11. a valve; 12. a rubber water stop; 13. a three-way valve; 14. a pressure reducing valve; 15. a wire rope; 16. a bolt; 17. a steel plate; 18. a wellhead cover.

Detailed Description

Exemplary embodiments of the present utility model are described in detail below. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the utility model, it is to be understood that other embodiments may be realized and that various changes to the utility model may be made without departing from the spirit and scope of the utility model. The following more detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely illustrative and not limiting of the utility model's features and characteristics in order to set forth the best mode of carrying out the utility model and to sufficiently enable those skilled in the art to practice the utility model. Accordingly, the scope of the utility model is limited only by the attached claims.

Example 1

An underground mine aquifer drainage system is used for conducting drainage work on an aquifer in underground mining, and the specific structure and construction mode of the system are described in detail below.

As shown in fig. 1 to 4, the system mainly comprises an upper outer sleeve 1, an upper inner sleeve 2, a lower sleeve 4 and a drain pipe 5 which are arranged in sequence from top to bottom. Wherein the upper end of the upper outer casing 1 extends out of the earth's surface 6 and the lower end extends to the upper bedrock layer 7. The upper end of the lower sleeve 4 extends into the lower bedrock layer 8 and does not extend into the aquifer 9, the lower end of the lower sleeve extends into the roadway 10 and is connected with the drain pipe 5, and the drain pipe 5 is provided with a valve 11 for controlling the switch and a pressure reducing valve 14 for controlling the flow. The upper end of the upper inner sleeve 2 is welded with the upper outer sleeve 1 through a steel plate 17, the lower end of the upper inner sleeve extends into the upper end of the lower sleeve 4, the part of the upper inner sleeve 3 positioned in the aquifer 9 is of a flower pipe 3 structure, and a wellhead cover 18 is arranged at the upper ends of the upper inner sleeve 2 and the upper outer sleeve 1.

The system carries out unique improvement on the structure, firstly carries out lower drainage construction in a roadway 10, then drills holes from the upper part of the ground surface, lowers an upper inner sleeve 2 to a lower sleeve 4, converts underground construction into overground construction, reduces construction difficulty, and can effectively control the water flow speed of the water bearing layer 9 entering the sleeve by arranging the upper inner sleeve 2 positioned in the water bearing layer 9 into a flower pipe 3 structure, thereby reducing the impact force of water flow on the end part of a pipeline and reducing the occurrence of the condition of water seepage and water leakage.

In addition, the vertical geological drilling hole extending to the ground surface can be used as a permanent hydrologic observation hole of a mine when being used as a water drainage channel of the aquifer, the change condition of the water level of the drilling hole is observed by closing a valve after water is drained for a period of time, the change of the aquifer is researched by comparing hydrogeological parameters such as permeability coefficient and water guide coefficient of the aquifer with hydrogeological parameters for detail investigation, and meanwhile, the relationship of the supplement, the diameter and the row of the aquifer between different areas can be researched by utilizing other hydrologic observation holes through a water drainage test and is used as the basis of aquifer treatment.

In this embodiment, the rubber water stop 12 is coated on the outer side of the upper inner sleeve 2 at the junction of the bedrock layer and the aquifer 9 and the lower sleeve 4 at the junction of the lower bedrock layer 8 and the roadway 10. During construction, the upper inner sleeve 2 can be quickly fixed when extending to the lower sleeve 4 through the expansion fixation of the rubber water stop belt 12, the tightness of the joint is improved, and the occurrence of water seepage and water leakage is reduced.

The import of three-way valve 13 is connected to the lower extreme of lower part sleeve pipe 4, and two exports of three-way valve 13 are connected a drain pipe 5 through a valve 11 respectively, can dredge the water of aquifer to the construction area of needs through different drain pipes 5, satisfy underground mine water demand, reduce mine water cost, and this kind of structure can carry out controllable quick dredging to thick hard aquifer simultaneously, reduces the water damage factor.

In order to improve the fixing effect of the lower sleeve 4, the embodiment is connected with the anchor rods 16 through the steel wire ropes 15 at the part of the lower sleeve 4 extending into the roadway 10, the anchor rods 16 are inserted into the lower stratum 8, and the steel wire ropes 15 and the anchor rods 16 are provided with at least two groups.

It should be noted that, on the upper inner sleeve 2 of this embodiment, the diameter of the flowtube 3 is smaller than the diameter of the rest positions, and the aperture of the junction of the flowtube 3 and the rest positions is of a gradual change structure, so as to reduce the flow velocity of water flowing into the rest pipelines from the flowtube 3, reduce the impact on the junction of different geological layers, and reduce the occurrence of water seepage and water leakage.

When the method is specifically implemented, after the original geological drilling position is determined, more than 2 anchor rods are firstly constructed for the exposed geological drilling in the pit and used for fixing the lower casing 4, if no filler is filled in the drilling, the lower casing 4 is directly installed, hydrostatic pressure is predicted according to hydrogeological data and the exposed position of the drilling, and a proper casing length is selected for pipe fixing (more than 20m is more stable and safe). And (3) grouting and reinforcing are started after the lower sleeve 4 is put in, after solidification is carried out for 24 hours, sweeping through and drilling are carried out until the sleeve is 0.5m outside for pressure resistance test, the pressure is at least 1.5 times greater than the hydrostatic pressure, the sleeve and surrounding rock are completed after pipe fixing under the condition that no water exists, and finally a valve 11 is installed and connected with a drain pipe 5.

After the underground construction is completed, the original geological drilling position is found out on the ground surface according to coordinates, then a drilling hole is excavated, the upper outer sleeve 1 is installed to the upper bedrock layer 7, cement slurry is poured on the periphery of the sleeve, the upper outer sleeve is ensured to bear the weight of the upper inner sleeve 2, and then backfill soil is filled below the hole opening. After all is ready, the drilling machine is arranged, a drill bit slightly smaller than the bore diameter of the drill hole is used for sweeping the bore until the upper end of the lower sleeve 4 is near, at this time, the underground valve can surge a lot of water (the bore water is influenced by the bore diameter and the pressure), and the water is controlled through the underground drainage pipe 5 and related valves. After the surface drilling is completely swept, after the underground drilling is drained for a period of time, the valve 11 is closed after no rock particles in the waiting hole are punched out.

The upper inner sleeve 2 is installed after geological drilling is swept through, the elevation of an aquifer is determined according to a geological drilling histogram, the upper inner sleeve 2 is lowered from the ground to the lower sleeve 4, a rubber water stop 12 is wound at the joint of the aquifer 9 and the lower bedrock layer 8 and is fastened by steel wires, the rubber water stop 12 needs to be longer than the length of the joint, and the specific length can be determined according to lithology and crack development conditions. The upper part of the aquifer 9 is constructed in the same manner, and the hole diameter is reduced during construction because the drill hole is long, so that the appropriate hole diameter needs to be changed according to the drill hole data.

In summary, according to the underground mine aquifer drainage system, the overall structure of the aquifer drainage system is improved, so that the problems of high difficulty in underground drainage construction and easiness in water seepage and water leakage are solved.

Claims

1. An underground mine aquifer dredging system is characterized in that: comprises an upper outer sleeve (1), an upper inner sleeve (2), a lower sleeve (4) and a drain pipe (5); the upper end of the upper outer sleeve (1) extends out of the ground surface (6), and the lower end of the upper outer sleeve extends to the upper bedrock layer (7); the upper end of the lower sleeve (4) extends into the lower bedrock layer (8) and does not extend into the aquifer (9), the lower end of the lower sleeve extends into the roadway (10) and is connected with the drain pipe (5), and a valve (11) is arranged on the drain pipe (5); the upper end of the upper inner sleeve (2) is fixedly connected with the upper outer sleeve (1), the lower end of the upper inner sleeve extends into the upper end of the lower sleeve (4), and the part of the upper inner sleeve (2) located in the aquifer (9) is of a flower pipe (3) structure.

2. An underground mine aquifer drainage system according to claim 1, wherein: the upper inner sleeve (2) is positioned at the junction of the stratum basale and the aquifer (9), and the outer side of the upper inner sleeve is coated with a rubber water stop (12).

3. An underground mine aquifer drainage system according to claim 1, wherein: the lower sleeve (4) is positioned at the joint of the lower bedrock layer (8) and the roadway (10), and the outer side of the lower sleeve is coated with a rubber water stop (12).

4. An underground mine aquifer drainage system according to claim 1, wherein: the lower end of the lower sleeve (4) is connected with an inlet of a three-way valve (13), and two outlets of the three-way valve (13) are respectively connected with a drain pipe (5) through a valve (11).

5. An underground mine aquifer drainage system of claim 4, wherein: the drain pipe (5) is provided with a pressure reducing valve (14).

6. An underground mine aquifer drainage system of claim 5, wherein: the part of the lower sleeve (4) extending into the roadway (10) is connected with an anchor rod (16) through a steel wire rope (15), and the anchor rod (16) is inserted into the lower bedrock layer (8).

7. An underground mine aquifer drainage system of claim 6, wherein: the steel wire rope (15) and the anchor rod (16) are provided with at least two groups.

8. An underground mine aquifer drainage system according to any one of claims 1 to 7, wherein: the diameter of the flower pipe (3) on the upper inner sleeve (2) is smaller than that of the rest positions, and the aperture of the joint of the flower pipe (3) and the rest positions is of a gradual change structure.

9. An underground mine aquifer drainage system according to any one of claims 1 to 7, wherein: the upper end of the upper inner sleeve (2) is welded with the upper outer sleeve (1) through a steel plate (17).

10. An underground mine aquifer drainage system of claim 9, wherein: the upper ends of the upper inner sleeve (2) and the upper outer sleeve (1) are provided with a well cover (18).