Horizontal roadway filling roof-contacted device

Abstract

The utility model discloses a horizontal roadway filling roof contact device, belongs to the technical field of mine filling, and solves the problems that the existing device is poor in filling effect, and filling slurry cannot be in 100% roof contact with a roadway roof. The device comprises a non-elastic air bag and a pressure pipeline, the non-elastic air bag is installed in a horizontal roadway, one end of the non-elastic air bag is connected with a first connecting pipe and a second connecting pipe, the second connecting pipe is connected with a discharging branch pipe through a filling discharging pipe, the discharging branch pipe is provided with a discharging valve, and the pressure pipeline is connected with the first connecting pipe. And an air inlet valve and an exhaust valve are arranged on the pressure pipeline. The utility model has the advantages of simple structure, convenient construction process and obvious filling effect, realizes 100% roof contact between the filling slurry and the roadway roof, and has strong practicability and wide application prospect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mine filling, and particularly relates to a horizontal roadway filling roof-contacting device. BACKGROUND

[0002] An empty area is formed in the mining process of an underground mine, and the treatment of the empty area is a key content of hidden disaster prevention and investigation. According to the national policy requirement, the filling method is used for mining in the underground mine, and a filling station and a filling system are generally built in the filling method mining mine. The filling slurry prepared in the filling station is transported to the underground empty area for filling by means of gravity flow or pressurized pumping, and auxiliary facilities are matched according to the filling mining process requirement of the empty area. The filling body in the empty area will serve as the limited support of the side-hill ore body and the next level ore body, and the roof-contacting rate, strength and stability of the filling body are crucial to the mining of the mine.

[0003] The flowability of the filling slurry in the empty area, especially in the horizontal roadway, is influenced by the material properties, proportioning and length of the roadway and other factors. The filling slurry has a high material level at the position of the slurry outlet and a low material level far from the position of the slurry outlet, and the filling slurry begins to coagulate in the flow process, forming a slope surface with a certain slope in the filling roadway, so that the filling slurry cannot be 100% roof-contacted with the roadway roof. The low roof-contacting rate of the filling slurry will directly affect the support stability of the surrounding rock and the upper filling body of the filling body, and further affect the safe mining of the ore body. The roof-contacting problem of the filling slurry in the horizontal roadway has been a technical problem faced by the filling operation. SUMMARY

[0004] The utility model provides a kind of horizontal roadway filling roof-contacting device to solve the problems of poor filling effect of existing device, and filling slurry cannot be 100% roof-contacted with the roadway roof.

[0005] The technical scheme of the utility model is as follows: a kind of horizontal roadway filling roof-contacting device is provided with a filling discharge pipe in horizontal roadway, including inelastic air bag and pressure pipeline, inelastic air bag is installed in horizontal roadway, inelastic air bag one end is connected with first connecting pipe and second connecting pipe by flange, second connecting pipe is connected with discharge branch pipe, discharge branch pipe is connected with filling discharge pipe by three-way valve, discharge valve is arranged on discharge branch pipe, pressure pipeline is connected with first connecting pipe, inlet valve and exhaust valve are arranged on pressure pipeline, exhaust valve is arranged behind inlet valve on pressure pipeline.

[0006] As a further improvement of the utility model, a plurality of limiting frames are arranged in the horizontal roadway, a limiting frame transverse rib is arranged on each limiting frame, and the limiting frame transverse rib is arranged obliquely downward along the horizontal roadway. The inelastic air bag is located below the limiting frame transverse rib, so that the air bag is downhill from the filling roadway opening to the end of the roadway, and the slope is greater than or equal to 2%.

[0007] As a further improvement of the utility model, the horizontal roadway is built with a filling retaining wall, the filling retaining wall is in close contact with one end of the inelastic air bag, and the first connecting pipe and the second connecting pipe pass through the filling retaining wall.

[0008] As a further improvement of the utility model, the inelastic air bag is in sealing connection with the first connecting pipe and the second connecting pipe respectively, quick connectors are arranged on the first connecting pipe and the second connecting pipe, and the installation of the inelastic air bag can be realized through the quick connectors.

[0009] As a further improvement of the utility model, a flow meter is arranged on the pressure pipeline, and the gas supply flow can be detected.

[0010] As a further improvement of the utility model, a pressure gauge is arranged on the pressure pipeline, and the gas supply pressure can be detected.

[0011] As a further improvement of the utility model, the inelastic air bag is made of PVC coated cloth, has light weight, good sealing property, pressure resistance and plasticity, can bear 0.4Mpa pressure, and can not only bear the pressure of the filling slurry, but also bear the pressure of the compressed air in the pressure pipeline.

[0012] The utility model has the advantages of:

[0013] 1. The utility model uses the inelastic air bag, relies on the inflation volume of the inelastic air bag to make up the space without roof connection in the horizontal roadway, improves the filling roof connection rate, and makes the inelastic air bag closely contact with the slurry in the horizontal roadway through subsequent filling of the slurry into the inelastic air bag, so that 100% roof connection of the filling slurry and the roadway roof is realized.

[0014] 2. The utility model adopts the limiting frame and the limiting frame transverse ribs, so that the inelastic air bag forms a certain slope in the filled horizontal roadway, the slurry in the inelastic air bag is conveniently added, and the flowability and fullness of the slurry in the air bag are ensured.

[0015] 3. The utility model inflates and deflates the inelastic air bag in the filling process, so that the slurry liquid level difference in the horizontal roadway is increased, the flowability of the slurry is effectively improved, and the filling roof connection rate is improved.

[0016] 4. The utility model has the advantages of simple structure, convenient construction process, obvious filling effect, 100% roof connection of the filling slurry and the roadway roof, strong practicability and wide application prospect. DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is an enlarged structural schematic view of the utility model;

[0019] Figure 3 It is the construction schematic view of the construction method step D of the utility model;

[0020] Figure 4 It is the construction schematic view of the construction method step E of the utility model.

[0021] In the figure: 1 - filling downcomer; 2 - limiting frame; 21 - limiting frame cross rib; 3 - inelastic air bag; 4 - filling retaining wall; 5 - first connecting pipe; 6 - second connecting pipe; 7 - quick connector; 8 - flowmeter; 9 - pressure gauge; 10 - exhaust valve; 11 - air inlet valve; 12 - first connecting pipeline; 13 - three-way valve; 14 - filling valve; 15 - horizontal roadway; 16 - downcomer branch pipe; 17 - downcomer valve. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0023] Example 1,

[0024] As Figures 1-4 shown, a horizontal roadway filling roof contact device is provided with a filling downcomer 1 in the horizontal roadway 15, comprising an inelastic air bag 3 and a pressure pipeline 12, the inelastic air bag 3 is installed in the horizontal roadway 15, the inelastic air bag 3 is connected with the first connecting pipe 5 and the second connecting pipe 6 through the flange at one end, the second connecting pipe 1 is connected with the downcomer branch pipe 16, the downcomer branch pipe 16 is connected with the filling downcomer 1 through the three-way valve 13, the downcomer branch pipe 16 is provided with the downcomer valve 17, the pressure pipeline 12 is connected with the first connecting pipe 5, the pressure pipeline 12 is provided with the air inlet valve 11 and the exhaust valve 12, and the exhaust valve 10 is behind the air inlet valve 11 on the pressure pipeline 12.

[0025] A plurality of limiting frames 2 are evenly arranged in the horizontal roadway 15, the limiting frame cross rib 21 is installed on the limiting frame 2, the limiting frame cross rib 21 is arranged obliquely downward along the filling area, and the inelastic air bag 3 is located below the limiting frame cross rib 21.

[0026] The horizontal roadway 15 is built with a filling retaining wall 4, the filling retaining wall 4 abuts against one end of the inelastic air bag 3, and the first connecting pipe 5 and the second connecting pipe 6 pass through the filling retaining wall 4.

[0027] The inelastic air bag 3 is sealingly connected with the first connecting pipe 5 and the second connecting pipe 6 respectively, the first connecting pipe 5 and the second connecting pipe 6 are both provided with quick connectors 7, and the quick connectors 7 can quickly detach or install the inelastic air bag 3 from the pressure pipeline 12 and the downcomer branch pipe 16 respectively.

[0028] The pressure pipeline 12 is provided with a flowmeter 8.

[0029] The pressure pipeline 12 is provided with a pressure gauge 9.

[0030] The non-elastic air bag 3 is made of PVC coating cloth, has light weight, good sealing property, pressure resistance and plasticity, can bear the pressure of the filled slurry and the compressed air of the first connecting pipeline.

[0031] A construction method of a horizontal roadway filling roof connecting device, comprising the following steps:

[0032] A. Installing a limiting frame 2 and a filling downcomer 1 in the horizontal roadway 15, controlling in sections at 30-50 m, setting a limiting frame cross rib 21 in the limiting frame 2, arranging the limiting frame cross rib 21 in a downward inclined manner along the filling area, selecting a suitable non-elastic air bag 3 and laying it in the horizontal roadway 15;

[0033] B. Building a filling retaining wall 4 on one side of the non-elastic air bag 3, connecting the first connecting pipeline 5 with the pressure pipeline 12 and the second connecting pipeline 6 with the filling branch pipeline 16 through the filling retaining wall 4;

[0034] C. Opening the filling valve 14, filling the slurry in the horizontal roadway 15 through the filling downcomer 1, opening the air inlet valve 11 after the slurry is filled to half the height of the horizontal roadway 15, introducing 1 / 3 of the compressed air into the non-elastic air bag 3 through the pressure pipeline 12, the air supply pressure being 0.3 Mpa, inflating the non-elastic air bag 3 to 80%-90% saturation, the inflated non-elastic air bag 3 being in an inclined state along the limiting frame cross rib 21, the slurry continuously flowing to the lower part of the non-elastic air bag 3, filling the horizontal roadway 15, and the filling downcomer 1 continuously filling the slurry in the horizontal roadway 15;

[0035] D. Opening the air outlet valve 10 after the slurry is filled to above the non-elastic air bag 3, discharging part of the gas in the non-elastic air bag 3, then repeating the inflation and discharge, increasing the flowability of the slurry through the change of the non-elastic air bag 3, until the flow rate detection value of the filling downcomer 1 is extremely reduced, and the filling valve 14 is closed;

[0036] E. Opening the air inlet valve 11 to inflate the non-elastic air bag 3, closing the air inlet valve 11 after the non-elastic air bag 3 is filled, opening the filling valve 14, the downcomer valve 17 and the air outlet valve 10, filling the slurry in the non-elastic air bag 3, closing the filling valve 14 and the downcomer valve 17 when the flowmeter 8 cannot detect the gas flow data, and completing the filling roof connecting;

[0037] F. Detaching the first connecting pipeline 5 and the pressure pipeline 12 through the quick release interface 7, detaching the second connecting pipeline 6 and the filling branch pipeline 16, and recycling all the pipelines.

[0038] In the filling process, the filling can be carried out for several times according to the segment division to ensure the quality of the filling roof. For the roadway with a length less than 50 m, a filling retaining wall 4 can be built, and then the filling roof operation can be directly carried out. Correspondingly, the length of the inelastic air bag 3 is also less than 50 m.

[0039] Example 2,

[0040] In this embodiment, the pressure pipeline 12 can be replaced by a water pipeline, and 1 / 2 volume of water is injected into the inelastic air bag 3 to generate water pressure in the inelastic air bag 3. The water pressure is greater than the pressure of the filling slurry on the air bag, so that the inelastic air bag 3 can overcome the pressure of the slurry and maintain the shape in the slurry.

[0041] Until the flow detection value of the filling discharge pipe 1 decreases rapidly, the filling valve 14 is closed, the water pipeline is directly removed, the slurry is filled into the inelastic air bag 3, the water in the inelastic air bag 3 is discharged through the first connecting pipe 5, and when the slurry is discharged from the first connecting pipe 6, the discharge valve 17 and the filling valve 14 are closed, and the filling roof is completed.

Claims

1. A horizontal roadway backfill roof contact device, which is provided with a backfill discharge pipe (1) in a horizontal roadway (15), characterized in that: It includes non-elastic air bag (3) and pressure pipeline (12), the non-elastic air bag (3) is installed in horizontal roadway (15), and the non-elastic air bag (3) is connected with first connecting pipe (5) and second connecting pipe (6) at one end, the second connecting pipe (6) is connected with filling downcomer (1) through downcomer branch pipe (16), and downcomer valve (17) is arranged on the downcomer branch pipe (16), the pressure pipeline (12) is connected with the first connecting pipe (5), and air inlet valve (11) and exhaust valve (10) are arranged on the pressure pipeline (12).

2. A horizontal roadway backfill contact device according to claim 1, characterized in that: Multiple limiting racks (2) are arranged in the horizontal roadway (15), the limiting rack (2) is installed with limiting rack transverse rib (21), the limiting rack transverse rib (21) is arranged obliquely downward along the horizontal roadway (15), and the non-elastic air bag (3) is located below the limiting rack transverse rib (21).

3. A horizontal roadway backfill contact roof device according to claim 1 or 2, characterised in that: The horizontal roadway (15) is built with filling retaining wall (4), one end of the filling retaining wall (4) is in close contact with the non-elastic air bag (3), and the first connecting pipe (5) and the second connecting pipe (6) pass through the filling retaining wall (4).

4. A horizontal roadway backfill contact device according to claim 3, characterized in that: The non-elastic air bag (3) is respectively and sealingly connected with the first connecting pipe (5) and the second connecting pipe (6), and the first connecting pipe (5) and the second connecting pipe (6) are both provided with quick connector (7).

5. A horizontal roadway backfill contact device according to claim 1, characterized in that: The pressure pipeline (12) is provided with flow meter (8).

6. A horizontal roadway backfill contact device according to claim 5, characterized in that: The pressure pipeline (12) is provided with pressure gauge (9).

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