Quick assembly type plate wall for metal mine paste filling

Abstract

The utility model discloses a rapid assembly type plate wall for metal mine paste filling. The rapid assembly type plate wall comprises a support layer and an air bag layer located on the inner side of the support layer. The support layer comprises a base, a plurality of hinged supports are installed on the upper side, the left side and the right side of the base respectively, and the hinged supports are connected with hydraulic telescopic supporting columns through hinged shafts. Reinforcing ribs are connected between the adjacent hydraulic telescopic supporting columns. The section, connected with the hinged support, of the hydraulic telescopic supporting column is connected with a hydraulic station through a hydraulic oil pipe. The air bag layer comprises a plurality of air bag units which are arranged up and down, and the adjacent air bag units are connected through connecting pieces. The air bag units are further connected with the support layer through hanging ropes. The number of wall components is small, and board wall construction is faster; the extension angle of the bracket is adjustable and the foundation is firmer; the stability of the siding wall can be monitored in the construction process, sand leakage and slurry leakage are prevented, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine filling, in particular to a plate wall used for paste filling in metal mines. Technical Background

[0002] With the promotion and application of paste pumping filling technology in metal mines, the single filling volume of the mining field has been further increased, the filling frequency has been further reduced, the filling efficiency has been further improved, and the pressure-bearing standard of the board wall has been further improved to meet the filling quality requirements of no segregation, no stratification, and almost no water seepage. Traditional wooden board walls, block retaining walls, concrete retaining walls, and steel structure board walls generally have various problems such as low pressure bearing capacity, unstable structure, long erection period, and high labor intensity in construction, which make it difficult to meet the needs of fast and high-quality filling. On the other hand, due to the irregular shape of the underground top wall, it is difficult to fully fit the existing filling board wall, and problems such as slurry leakage and sand leakage often occur in the gaps.

[0003] The Chinese utility model with the authorization announcement number CN220581094U discloses a "retractable and reusable hydraulic airbag wall device", which includes a hydraulic frame, a steel plate layer, an airbag layer, a geotextile, a filling tube, and a

[0004] and pipe supports; when in use, the hydraulic airbag wall device is arranged on one side of the backfill goaf. A hydraulic component is arranged inside the hydraulic skeleton, and the hydraulic component can realize the extension and retraction of the hydraulic skeleton. When in use, the hydraulic system can drive the hydraulic skeleton to extend and press against the upper rock mass in the tunnel, thereby providing support for the airbag layer and the steel plate layer. As a mine paste filling retaining wall, it can shorten the waiting time for the filling retaining wall construction and improve the filling organization efficiency. Its main disadvantages are: first, there is a lack of installation foundation at the root of the hydraulic skeleton, and there is a lack of an angle adjustment mechanism between the telescopic rods; second, the wall body has at least four layers (one side of the geotextile contacts the backfill goaf, and the other side of the geotextile is sequentially provided with the airbag layer, the steel plate layer, and the hydraulic skeleton), and the construction procedure is still relatively complicated, and it is difficult to meet the requirements of rapid construction. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a fast-assembly board wall for paste filling in metal mines. Firstly, the wall components are fewer to facilitate rapid construction, the bracket extension angle is adjustable and the foundation is more solid; secondly, the stability of the board wall can be monitored during the construction process to prevent sand leakage and slurry leakage, and improve the safety of the operation.

[0006] The technical solution of the utility model is as follows:

[0007] A fast-assembly plate wall for paste filling in metal mines, comprising a goaf, surrounding rocks around the goaf, a support layer and an airbag layer located inside the support layer, the support layer comprising a base, a plurality of hinge supports respectively installed on the upper side and left and right sides of the base, the hinge supports being connected to hydraulic telescopic struts via hinge shafts; reinforcing ribs are connected between adjacent hydraulic telescopic struts; a section of the hydraulic telescopic strut connected to the hinge support is connected to a hydraulic station via a hydraulic oil pipe; the airbag layer comprises a plurality of airbag units arranged up and down with air inlet nozzles and air outlet nozzles; adjacent airbag units are connected to each other via connectors; and the airbag unit is connected to the support layer via a hanging rope.

[0008] Preferably, a layer of foam glue is coated on the top side and the left and right sides of the surrounding rock; the top end of the hydraulic telescopic support passes through the foam glue and then presses on the surrounding rock.

[0009] Preferably, a fixed foot is installed on the bottom side of the base; the fixed foot is inserted into the surrounding rock below the base.

[0010] Preferably, the airbag unit is a double-layer airbag, and the outer layer is covered with felt.

[0011] Preferably, a pressure sensor and a displacement sensor are installed in the airbag unit; the pressure sensor and the displacement sensor are respectively connected to a data acquisition device located outside the support layer through a data transmission line.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] First, the utility model has only two layers of components (support layer and airbag layer) to form the wall body. The base of each hydraulic telescopic support in the support layer is more solid and the extension angle can be adjusted around the hinge support. The retaining wall unit can be freely combined according to the size of the stope, providing a more flexible application scenario. It can achieve rapid erection and installation, greatly improving the efficiency and quality of underground filling cycle operations.

[0014] Second, the optimized technical solution of the utility model adopts a foam rubber design as an adaptive frame, so that the inflatable board wall can adapt to the irregular shape of the underground top wall and has a wider range of applications.

[0015] Third, the optimized technical solution of the utility model adds a monitoring mechanism, which monitors the internal pressure and position data of the airbag unit during the construction process. If abnormal pressure or position is detected, it indicates leakage or over-inflation, and timely measures are taken to ensure the stability and safety of the board wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the hydraulic telescopic support in the embodiment of the utility model in the retracted state, with the reinforcing ribs omitted;

[0018] Figure 3 This is a schematic diagram of the structure of the airbag layer in the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the monitoring mechanism of the embodiment of the utility model.

[0020] Among them: 1. Base; 1-1. Fixed foot; 1-2. Hinge support; 2. Reinforcement ribs; 3. Hydraulic telescopic support; 4. Foam; 5. Surrounding rock; 6. Air bag unit; 6-1. Air inlet nozzle; 6-2. Air outlet nozzle; 7. Connector; 8. Hanging rope; 9. Goaf; 10. Pressure sensor; 11. Displacement sensor; 12. Data transmission line; 13. Data acquisition device. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and Figure 4 The embodiment of the utility model includes a goaf 9 and surrounding rocks 5 around the goaf 9, and also includes a support layer and an air bag layer located on the inner side of the support layer (i.e., one side of the goaf 9). The support layer is used to support the overall structure of the inflatable board wall, provide the necessary support force, and ensure the stability of the retaining wall. The air bag layer is rapidly expanded by inflation.

[0023] like Figure 1 and Figure 2 The support layer includes a base 1, and a plurality of hinge supports 1-2 are respectively installed on the upper side and the left and right sides of the base 1. The hinge supports 1-2 are connected to hydraulic telescopic struts 3 through hinge shafts. The hydraulic telescopic struts 3 have at least two sections (three sections in this embodiment) of sleeves that are slidably connected to each other. Reinforcement ribs 2 are connected between adjacent hydraulic telescopic struts 3. The reinforcement ribs 2 can be elastic materials, which can adapt to the opening spacing of adjacent hydraulic telescopic struts 3 through their elastic force; or they can be steel wires, and the length of the steel wires meets the maximum opening spacing of adjacent hydraulic telescopic struts 3. The section of the hydraulic telescopic strut 3 connected to the hinge support 1-2 is connected to an external hydraulic station through a hydraulic oil pipe. The hydraulic telescopic strut 3 is extended and retracted by hydraulic action.

[0024] The hydraulic telescopic support 3 can be adjusted around the hinge axis by -40° to +40° to adapt to different support inclination angles.

[0025] Furthermore, a layer of foam glue 4 is applied on the top side and the left and right sides of the surrounding rock 5. When the hydraulic telescopic support 3 is extended, the top of the last section passes through the foam glue 4 and presses on the surrounding rock 5.

[0026] Furthermore, in order to increase the connection strength with the surrounding rock 5, a fixed foot 1-1 is installed on the bottom side of the base 1. When in use, the fixed foot 1-1 is inserted into the surrounding rock 5 below the base 1.

[0027] like Figure 3 The airbag layer includes a plurality of (three in this embodiment) airbag units 6 arranged up and down with an air inlet nozzle 6-1 and an air outlet nozzle 6-2, and adjacent airbag units 6 are connected to each other through a connecting member 7. The airbag unit 6 is connected to the support layer through a hanging rope 8 (generally connected to the adjacent reinforcing rib 2). Each airbag unit 6 has an air inlet nozzle 6-1 and an air outlet nozzle 6-2, wherein the air inlet nozzle 6-1 is connected to an air pump for filling the airbag unit 6 with high-pressure gas.

[0028] A plurality of airbag units 6 are connected to each other to form the main body of the panel wall. The airbag units 6 are made of wear-resistant and highly sealed materials, with a minimum pressure bearing of 3MPa, and are pressure-resistant and explosion-proof to ensure that they are not easy to leak when inflated. Good sealing is used to ensure the stability of the air pressure inside the inflation module, thereby enhancing the stability of the entire panel wall.

[0029] Furthermore, the airbag unit 6 is preferably a double-layer airbag, and the outer layer is covered with felt to prevent sharp objects such as gravel from scratching the airbag and affecting the life of the inflatable panel wall.

[0030] like Figure 4 A pressure sensor 10 and a displacement sensor 11 are installed in the airbag unit 6. The pressure sensor 10 and the displacement sensor 11 are connected to a data acquisition device 13 located outside the support layer through a data transmission line 12, respectively.

[0031] The pressure sensor 10 and displacement sensor 11 are used to monitor the internal pressure and position (the position of the airbag relative to the hydraulic telescopic support 3) of the airbag unit 6 in real time. If abnormal pressure or position is detected, it indicates leakage or over-inflation, and timely measures should be taken to ensure the stability and safety of the board wall.

[0032] The data acquisition device 13 collects data from the pressure sensor 10 and the displacement sensor 11 and transmits it to the data processing terminal. The data processing terminal stores and analyzes the received data and prompts the operator through a display screen or an alarm device. In addition, the existing retaining wall pressure calculation formula and strength design can be corrected by analyzing historical data in the later stage.

Claims

1. A fast-assembly plate wall for paste filling in metal mines, comprising a goaf (9), surrounding rocks (5) around the goaf (9), a support layer and an air bag layer located inside the support layer, characterized in that: The support layer comprises a base (1), and a plurality of hinge supports (1-2) are respectively installed on the upper side and the left and right sides of the base (1), and the hinge supports (1-2) are connected to hydraulic telescopic struts (3) via hinge shafts; reinforcing ribs (2) are connected between adjacent hydraulic telescopic struts (3); a section of the hydraulic telescopic struts (3) connected to the hinge supports (1-2) is connected to a hydraulic station via a hydraulic oil pipe; the airbag layer comprises a plurality of airbag units (6) arranged up and down and having air inlet nozzles (6-1) and air outlet nozzles (6-2); adjacent airbag units (6) are connected to each other via a connecting piece (7); and the airbag unit (6) is connected to the support layer via a hanging rope (8).

2. The rapid assembly type board wall for paste filling in metal mines as claimed in claim 1, characterized in that: A layer of foam glue (4) is applied on the top side and the left and right sides of the surrounding rock (5); the top end of the hydraulic telescopic support (3) passes through the foam glue (4) and is pressed against the surrounding rock (5).

3. The rapid assembly type board wall for paste filling in metal mines as claimed in claim 1, characterized in that: A fixed foot (1-1) is installed on the bottom side of the base (1); the fixed foot (1-1) is inserted into the surrounding rock (5) below the base (1).

4. The rapid assembly type board wall for paste filling in metal mines as claimed in claim 1, characterized in that: The airbag unit (6) is a double-layer airbag, and the outer layer is covered with felt.

5. The fast assembled board wall for paste filling in metal mines as claimed in claim 1, 2, 3 or 4, characterized in that: A pressure sensor (10) and a displacement sensor (11) are installed in the airbag unit (6); the pressure sensor (10) and the displacement sensor (11) are respectively connected to a data acquisition device (13) located outside the support layer via a data transmission line (12).

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