CN110578552A - Connecting structure of mine drainage shaft and drainage roadway - Google Patents
Connecting structure of mine drainage shaft and drainage roadway Download PDFInfo
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- CN110578552A CN110578552A CN201910982285.6A CN201910982285A CN110578552A CN 110578552 A CN110578552 A CN 110578552A CN 201910982285 A CN201910982285 A CN 201910982285A CN 110578552 A CN110578552 A CN 110578552A
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- drainage
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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
- E21F16/00—Drainage
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Abstract
The invention discloses a connecting structure of a mine drainage shaft and a drainage roadway, which relates to the technical field of underground mining, and adopts a 'U' -shaped connecting roadway design, wherein the connecting roadway comprises a connecting shaft, a connecting drift and a slope, the connecting shaft is vertically arranged, the slope is obliquely arranged, two ends of the connecting drift are respectively connected with the connecting shaft and the slope to form a 'U' -shaped structure, a connecting drift top plate is lower than the top of the connecting shaft and the top of the slope, the top of the connecting shaft is connected with the lower part of the drainage shaft, a support layer is arranged outside the drainage shaft, the slope is connected with the drainage drift, the connecting shaft is positioned below the drainage drift, and the connecting drift top plate is always submerged in water. The drainage shaft is always isolated from the drainage roadway, so that the drainage shaft can play a role of sealing air flow no matter the water inflow amount of the mine, and the drainage cannot generate water mist under the condition of large water inflow amount of the mine, thereby avoiding the influence of water flow on ventilation of the mine, being beneficial to reducing the number of ventilation structures and improving the ventilation effect of the mine.
Description
Technical Field
The invention relates to the technical field of underground mining, in particular to a connecting structure of a mine drainage shaft and a drainage roadway.
Background
In order to guarantee continuous safe production, a series of tunnels reaching an ore body need to be dug from the ground surface to the underground in the mine adopting an underground mining mode to form a system of lifting, transportation, ventilation, power supply, air supply, water supply, drainage, communication and the like, wherein timely discharge of water gushing from the mine is important content of flood control and flood fighting work of the mine, and is particularly important for the mine with large water gushing amount.
According to the mine topographic and geological conditions and the overall planning layout of development projects, the construction scheme of the drainage system comprises a first-stage drainage, a sectional drainage, a centralized drainage, a regional drainage and the like besides the gravity drainage. Wherein, the first stage of water drainage is to introduce water gushing from the upper stage into the lower stage and directly drain the water gushing from the lower stage to the ground surface; the step of sectional drainage is that the water burst in the lower stage is firstly drained to the upper stage and then drained to the ground surface from the upper stage; the centralized drainage is to discharge water from the mining area to the ground by a water pump room which concentrates water gushing in one stage. When the range of a mining area is large and the number of the shafts is large, a zone drainage mode is generally adopted.
The water burst of underground mines mainly comes from the aspects of surface water, atmospheric precipitation, underground water, process water and the like, and the water burst of mines under different conditions and sources are greatly different. Influenced by terrain and ore body conditions, most of domestic mines adopt mechanical drainage, and a few of domestic mines adopt gravity drainage. The mine drainage system adopting mechanical drainage generally comprises a ditch, a drainage roadway, a sedimentation tank, a sump, a pump room, drainage equipment, a drainage pipeline and the like, wherein the mine with large rainfall and high permeation speed is provided with the special drainage roadway so as to ensure that atmospheric rainfall quickly reaches the sump and is discharged out of the mine.
Due to the existence of the drainage roadway and the action of water flow, the air volume in the roadway can be large, and great influence is brought to mine ventilation, so that ventilation structures (such as air doors, air walls and the like) need to be arranged in the roadway, and the arrangement of the ventilation structures in the roadway has certain influence on water flow. The existing method comprises the following steps: set up the ventilation structures in the contact tunnel outside the sedimentation tank, keep apart drainage tunnel and haulage roadway to play and prevent the influence of rivers effect to the mine ventilation, when the sedimentation tank needs to be cleared up, these ventilation structures are opened and are changed the balanced state of original system and then influence the mine ventilation effect.
Disclosure of Invention
in order to solve the technical problems, the invention provides a connecting structure of a mine drainage shaft and a drainage roadway, which adopts a U-shaped connecting roadway design and comprises a connecting shaft, a connecting drift and a slope, wherein the connecting shaft is vertically arranged, the slope is obliquely arranged, two ends of the connecting drift are respectively connected with the connecting shaft and the slope to form a U-shaped structure, a connecting drift top plate is lower than the top of the connecting shaft and the top of the slope, the top of the connecting shaft is connected with the lower part of the drainage shaft, a support layer is arranged outside the drainage shaft, the slope is connected with the drainage drift, the connecting shaft is positioned below the drainage drift, and the connecting drift top plate is always submerged in water.
The technical effects are as follows: the invention is applied to the underground mine which drains water in a drainage shaft and a drainage roadway, the principle of a U-shaped pipe is utilized in a roadway system, the drainage shaft and the drainage roadway are connected by a section of U-shaped connecting roadway, the connecting shaft at the bottom of the drainage shaft is arranged below the drainage roadway, and a section of connecting roadway and a section of slope are arranged at the connecting section to form a U-shaped structure. When the drainage shaft is not drained, a small amount of water is always stored in the U-shaped section, a water wall is formed between the drainage shaft and the drainage roadway to prevent wind from passing through, when a large amount of water gushes into the drainage well, the water flows through the U-shaped section connecting roadway, enters the drainage roadway and flows into the sedimentation tank, and is blocked by the water stored in the U-shaped section, so that water mist formed during underground water burst and drainage cannot enter the drainage roadway, and the wind flow cannot be brought to influence the ventilation of the mine.
The technical scheme of the invention is further defined as follows:
The length of the connecting gallery is more than 3 m.
the connecting structure of the mine drainage shaft and the drainage roadway has the advantages that the included angle between the slope and the horizontal plane is within 30 degrees.
The connecting structure of the mine drainage shaft and the drainage roadway is characterized in that a step is arranged on one side of a slope.
The connecting structure of the mine drainage shaft and the drainage roadway is characterized in that the top plate of the connecting roadway is 20-30 mm lower than the bottom plate of the drainage roadway.
The invention has the beneficial effects that:
(1) In the invention, a step is arranged on one side of the slope so as to clean sludge;
(2) According to the invention, the top plate of the connecting gallery is 20-30 mm lower than the bottom plate of the drainage gallery to ensure that the U-shaped connecting gallery plays a role of sealing air current, the section of the U-shaped connecting gallery meets the requirement of the maximum water inflow of a mine, and the top plate of the connecting gallery is always submerged in water no matter the underground water inflow, so that the connecting gallery can play a role of draining and can also play a role of sealing air current;
(3) In the invention, the U-shaped connecting tunnel between the drainage shaft and the drainage tunnel always stores a small amount of water, so that the drainage shaft and the drainage tunnel are always isolated, the effect of closed air flow can be realized no matter the water inflow of a mine, and water mist cannot be generated by drainage under the condition of large water inflow of the mine, thereby avoiding the influence of water flow on ventilation of the mine, being beneficial to reducing the number of ventilation structures and improving the ventilation effect of the mine.
drawings
FIG. 1 is a schematic structural view of the present invention;
Wherein: 1. connecting a gallery; 2. a slope; 3. connecting a top plate of the gallery; 4. a lowest water line; 5. draining a roadway; 6. a supporting layer; 7. a drainage well bore; 8. connecting the shaft.
Detailed Description
A connecting structure of a mine drainage shaft and a drainage roadway is structurally shown in figure 1, and the connecting structure adopts a 'U' connecting roadway design and comprises a connecting shaft 8, a connecting drift 1 and a slope 2. Connect 8 vertical settings of pit shaft, 2 slants settings on slope, connect 1 both ends in gallery and connect pit shaft 8 and slope 2 respectively and form "U" shape structure, and connect gallery roof 3 and be less than and connect 8 tops of pit shaft and 2 tops on slope, connect 8 tops of pit shaft and link to each other with sluicing pit shaft 7 below, sluicing pit shaft 7 is equipped with a supporting layer 6 outward, slope 2 links to each other with sluicing gallery 5, 2 one side settings on slope are marked time. The connecting shaft 8 is located below the drainage roadway 5, the length of the connecting roadway 1 is more than 3m, the connecting roadway top plate 3 is 20-30 mm lower than the bottom plate of the drainage roadway 5, the included angle between the slope 2 and the horizontal plane is within 30 degrees, and the connecting roadway top plate 3 is always submerged in water.
A certain iron mine adopts an exploitation mode of combining a vertical shaft with a slope ramp, the mining method is a sill pillar-free sublevel caving method, four stages of 0m, 120m, 240m and 360m are set, underground water gushing of the mine adopts a one-section drainage mode, the water gushing at the upper part of the mine, which is at the level of transportation, of the three stages of 0m, 120m and 240m is discharged through a drainage well at the lower part of 360m, enters a sedimentation tank and a water sump through a drainage drift 5 at the lower part of 360m, and is directly discharged to the ground surface through a water pump at the stage of 360 m. Along with 0m, -120 m and-240 m of water gushing from the drainage well, a large air flow is formed in the drainage well and the-360 m drainage gallery 5, the air volume distribution of a mine ventilation system is seriously influenced, the air flow of the system is disordered, and the original air inlet gallery is changed into an air return gallery. In order to avoid the influence of water flow on a mine ventilation system, the current practice is as follows: in order to keep the smoothness between a-360 m drainage roadway and a sedimentation tank and prevent a large amount of drainage of a drainage well from influencing mine ventilation, two air doors are arranged in a communication roadway outside the-360 m drainage roadway to be beneficial to personnel to go in and out of the sedimentation tank and a sump for inspection and cleaning, the air doors are in a normally closed state, and due to the fact that a water ditch exists in the communication roadway, air flow can also enter between the two air doors after the air doors are installed, and therefore the air doors are still difficult to open. According to the invention, the underground mine adopts a section of U-shaped connecting roadway to connect the drainage shaft 7 with the drainage gallery 5 of minus 360m, the length of the connecting gallery 1 is 6m, the included angle between the slope 2 and the horizontal plane is 15 degrees, the section of the connecting roadway is the same as that of the drainage gallery 5, one side of the slope 2 is provided with a step for cleaning sludge, in order to prevent wind flow and water mist formed by the downward flow of the water flow of the drainage shaft 7 from entering the drainage gallery 5, the U-shaped connecting roadway is filled with water in advance to isolate the drainage shaft 7 from the drainage gallery 5, therefore, when a large amount of underground water gushes into the drainage well, the water flow enters the drainage roadway through the U-shaped connecting roadway to flow into the sedimentation tank, and is blocked by the water stored in the U-shaped section, the wind flow cannot enter the drainage roadway during the downward flow of the underground water gushing, and the ventilation of the mine cannot be influenced.
A small amount of water is always stored in a U-shaped connecting roadway between the drainage shaft 7 and the drainage roadway to isolate the drainage shaft 7 from the drainage roadway, so that the effect of closed airflow can be achieved no matter the water inflow of a mine, and under the condition of large water inflow of the mine, water can not be generated by water mist to affect the drainage roadway 5, so that the influence of water flow on ventilation of the mine is avoided, the number of ventilation structures is reduced, and the ventilation effect of the mine is improved.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a connection structure of mine drainage pit shaft and drainage tunnel which characterized in that: the method is characterized by adopting a 'U' -shaped connecting roadway design and comprises a connecting shaft (8), a connecting drift (1) and a slope (2), wherein the connecting shaft (8) is vertically arranged, the slope (2) is obliquely arranged, two ends of the connecting drift (1) are respectively connected with the connecting shaft (8) and the slope (2) and form a 'U' -shaped structure, a connecting drift top plate (3) is lower than the top of the connecting shaft (8) and the top of the slope (2), the top of the connecting shaft (8) is connected with the lower part of a drainage shaft (7), a supporting layer (6) is arranged outside the drainage shaft (7), the slope (2) is connected with the drainage drift (5), the connecting shaft (8) is positioned below the drainage drift (5), and the connecting drift top plate (3) is always submerged in water.
2. The connection structure of the mine drainage shaft and the drainage roadway according to claim 1, wherein: the length of the connecting gallery (1) is more than 3 m.
3. The connection structure of the mine drainage shaft and the drainage roadway according to claim 1, wherein: the included angle between the slope (2) and the horizontal plane is within 30 degrees.
4. The connection structure of the mine drainage shaft and the drainage roadway according to claim 1, wherein: one side of the slope (2) is provided with a step.
5. The connection structure of the mine drainage shaft and the drainage roadway according to claim 1, wherein: the top plate (3) of the connecting gallery is 20-30 mm lower than the bottom plate of the drainage gallery (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982285.6A CN110578552B (en) | 2019-10-16 | 2019-10-16 | Connecting structure of mine drainage shaft and drainage roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982285.6A CN110578552B (en) | 2019-10-16 | 2019-10-16 | Connecting structure of mine drainage shaft and drainage roadway |
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| Publication Number | Publication Date |
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| CN110578552A true CN110578552A (en) | 2019-12-17 |
| CN110578552B CN110578552B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910982285.6A Active CN110578552B (en) | 2019-10-16 | 2019-10-16 | Connecting structure of mine drainage shaft and drainage roadway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396109A (en) * | 2020-03-13 | 2020-07-10 | 海南矿业股份有限公司 | Stope ventilation and drainage roadway structure |
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| CN208010401U (en) * | 2018-03-22 | 2018-10-26 | 山西高河能源有限公司 | A kind of discharge structure solving the problems, such as air door inlet side ponding |
| CN208605182U (en) * | 2018-08-21 | 2019-03-15 | 云南驰宏锌锗股份有限公司 | A kind of device of vertical shaft pulp water separation and dedusting |
| CN208858404U (en) * | 2018-10-09 | 2019-05-14 | 上海大屯能源股份有限公司江苏分公司 | A kind of mine sealing wall Anti-air-leakage is turned one's coat device |
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2019
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201526342U (en) * | 2009-11-05 | 2010-07-14 | 煤炭工业济南设计研究院有限公司 | Independent double-drainage system at bottom of heavy water burst mine |
| CN103790590A (en) * | 2014-01-22 | 2014-05-14 | 中钢集团马鞍山矿山研究院有限公司 | Technology for preventing and controlling underground floods in transitional period from surface mine to underground mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396109A (en) * | 2020-03-13 | 2020-07-10 | 海南矿业股份有限公司 | Stope ventilation and drainage roadway structure |
| CN111396109B (en) * | 2020-03-13 | 2021-12-07 | 海南矿业股份有限公司 | Stope ventilation and drainage roadway structure |
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| Publication number | Publication date |
|---|---|
| CN110578552B (en) | 2021-02-26 |
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