CN220599869U - One-step forming plugging air leakage prevention structure for mining end head - Google Patents

Abstract

The utility model discloses a mining end head one-time molding plugging air leakage prevention structure, which comprises a framework structure, wherein the framework structure is composed of a plurality of sets of main supports, flexible membrane belt sheets are hung on the inner side and the outer side of each main support, reserved openings are pre-assembled in the flexible membrane belt sheets, walls are cast and molded on the inner sides of the main supports, the flexible membrane belt sheets and the reserved openings after the pre-embedding is completed, when the construction is carried out, a proper number of main supporting rods are prepared according to the positions of the walls, then after the framework is assembled, grouting is carried out on the inner sides of the flexible membrane belt sheets, after grouting is completed and solidified, flexible membrane bags are prevented according to the positions of the remaining openings on the top and the side, grouting is carried out on the inner sides of the flexible membrane bags, and finally, the plugging air leakage prevention structure which is attached along with the shape of a mining blank layer in a mine is formed, and the problems of large danger and heavy goaf caused by collapse caused by adopting a sand bag stacking or removing support mode in the mining blank in the existing mining area are effectively solved.

Description

One-step forming plugging air leakage prevention structure for mining end head

Technical Field

The utility model relates to the technical field of air leakage prevention in a coal mine goaf, in particular to a one-step molding blocking air leakage prevention structure for a mining end head.

Background

The goaf is a cavity generated under the ground surface by artificial excavation or natural geological movement, and the underground goaf has the characteristics of strong invisibility, poor regularity of spatial distribution characteristics, difficult prediction of the caving and collapsing condition of the top plate of the goaf, easy gas accumulation in the goaf and easy gas accidents.

In order to reduce goaf air leakage and inhibit the major risk of natural ignition of coal, the upper end and the lower end of the coal face originally adopt a coal bag partition wall to reduce goaf air leakage, but the blocking effect is poor, the goaf is blocked by developing a mode that flexible filling bags are arranged at the upper end and the lower end to fill non-polymer materials (LFM materials), the goaf is blocked by adopting a mode that sand bags are piled up or supports are removed to cause collapse and the like in the existing goaf air-collecting layer, so that the existing filling mode is high in risk and heavy in carrying, and an anchor rod bracket in the mode that flexible film bags are directly piled up and poured to block needs to be independently designed and welded, so that materials are wasted.

Disclosure of Invention

The utility model aims to provide a mining end head one-step forming plugging air leakage prevention structure so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a mining end one shot forming shutoff leak protection wind structure, includes skeleton texture, the skeleton texture comprises a plurality of sets of main support, the inside and outside both sides of main support articulates and has gentle membrane tape piece, is equipped with the reservation mouth in advance in the inside of gentle membrane tape piece, after main support, gentle membrane tape piece and reservation mouth are pre-buried, has pour the shaping wall body in the inboard of gentle membrane tape piece;

the main support comprises a main support rod, wherein the front end of the main support rod is uniformly provided with a connector, the outer side of the connector is connected with a terminal connector in a hanging mode, and an anchor rod is welded between the connector and the terminal connector;

the reserved opening comprises an outer sleeve, a plugging core is inserted into the outer sleeve, and the plugging core is tightly attached to the outer sleeve;

the front end of the main support rod is uniformly welded with hooks, and the hooks are hung in the main body of the flexible membrane belt sheet.

Preferably, round holes are uniformly formed in the outer portion of the main supporting rod.

Preferably, the connector comprises a screw rod at the outer side, and the tail end of the screw rod is formed by bending and welding steel bars to form a square cage body structure.

Preferably, the end connector comprises a screw, and a circular clamping piece is welded on the outer side of the screw.

Preferably, the inside joint of the cage body structure of connector is equipped with T style of calligraphy head, T style of calligraphy head and stock welded fastening.

Preferably, after the wall is formed, flexible film bags are piled up according to the shape of the gap between the wall and the outside.

The outside of shutoff core, the one end towards the operation face is equipped with the sampling door, the outside welding of sampling door has the handle.

The outside of stock has cup jointed oblique pull rod, oblique pull rod is long stock structure, has welded the ring at stock structure's both ends, and the ring cup joints in the outside of stock.

The main supporting rod is L-shaped, and a reinforcing rod is welded at the corner position of the main supporting rod.

The end joint penetrates through the flexible membrane strip piece and is in threaded connection with a nut, the connector penetrates through the main support rod and is in threaded connection with the nut, and when the flexible membrane strip piece is assembled with the screw rod of the end joint, an annular gasket is tightly attached to the inner side of the nut.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a wall body with flexible membrane strip pieces, flexible membrane bags and a main support, wherein during construction, a proper number of main support rods are prepared according to the positions of the wall body, T-shaped heads and tail end joints are prepared, the main support rods are welded with anchor rods, then the main support rods are fixed on the bottom surface, after the fixing is finished, the T-shaped heads are sleeved in the connectors, then a first flexible membrane strip piece is hung outside the hooks, finally a corresponding number of diagonal pull rods are clamped outside the anchor rods and welded and fixed to form a supportable frame body structure, then the other flexible membrane strip piece is spliced outside the tail end joints, a nut is screwed and fixed after a gasket is covered, then grouting is carried out to the inside of the flexible membrane strip piece, after grouting is finished and solidified, the flexible membrane bag is prevented from being grouted to the inside of the flexible membrane bag according to the positions of the residual openings at the top and the side surfaces, and finally a plugging air leakage structure attached along with the shape of an empty mining layer in a mine is formed.

Drawings

FIG. 1 is a schematic view of a single-section wall structure after molding according to the present utility model.

FIG. 2 is a schematic diagram of the structure of the sample of the present utility model facing away from the structure.

FIG. 3 is a schematic diagram of the skeleton structure of the present utility model.

FIG. 4 is a schematic diagram of the framework structure of the present utility model.

Fig. 5 is a schematic view showing the reverse structure of the main support of the present utility model.

Fig. 6 is a schematic view of the main support structure of the present utility model.

Fig. 7 is a schematic view of the structure of the connecting anchor frame of the present utility model.

Fig. 8 is a schematic view of the assembly of the connecting anchor frame of the present utility model.

In the figure: 1. the device comprises a main support, 11, a main support rod, 12, reinforcing rods, 13, connectors, 14, T-shaped heads, 15, anchor rods, 16, end connectors, 17, clamping pieces, 18, diagonal draw bars, 19, hooks, 2, flexible membrane belt pieces, 3, flexible membrane bags, 4, reserved openings, 41, outer sleeves, 42, sampling doors, 43, plugging cores, 5, walls, 5 and walls.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-8, the present utility model provides a technical solution: the one-step molding plugging and air leakage preventing structure for the mining end comprises a framework structure, wherein the framework structure is composed of a plurality of sets of main supports 1, flexible membrane strip pieces 2 are hung on the inner side and the outer side of each main support 1, reserved openings 4 are pre-assembled in the flexible membrane strip pieces 2, and after the main supports 2, the flexible membrane strip pieces 2 and the reserved openings 4 are pre-buried, walls 5 are cast and molded on the inner sides of the flexible membrane strip pieces 2;

the main support 1 comprises a main support rod 11, wherein the front end of the main support rod 11 is uniformly provided with a connector 13, the outer side of the connector 13 is connected with a terminal connector 16 in a hanging manner, and an anchor rod 15 is welded between the connector 13 and the terminal connector 16;

the reserved opening 4 comprises an outer sleeve 41, a plugging core 43 is inserted into the outer sleeve 41, and the plugging core 43 is tightly attached to the outer sleeve 41;

the front end of the main supporting rod 11 is uniformly welded with a hook 19, and the hook 19 is hung inside the main body of the flexible membrane belt sheet 2.

The utility model provides a wall body with flexible membrane strip pieces 2, flexible membrane bags 3 and a main support 1, wherein during construction, a proper number of main support rods 11 are prepared according to the positions of the wall body, T-shaped heads 14 and tail end joints 16 are prepared, the main support rods 11 are welded with anchor rods 15, the main support rods 11 are fixed on the bottom surface, the T-shaped heads 14 are sleeved inside the connectors 13 after the fixing is finished, a first layer of flexible membrane strip pieces 2 are hung outside hooks 19, a corresponding number of diagonal draw bars 18 are clamped outside the anchor rods 15 and welded and fixed to form a supportable frame structure, the other layer of flexible membrane strip pieces 2 are spliced outside the tail end joints 16, nuts are screwed and fixed after the gaskets are covered, grouting is carried out to the inside of the flexible membrane strip pieces 2, after grouting is finished and solidification, the flexible membrane bags 3 are prevented according to the positions of the openings at the top and the left sides, grouting is carried out to the inside of the flexible membrane bags 3, and finally a plugging air leakage structure attached to the shape of the layers in a mine is formed, so that the problem of heavy mining bags or the large empty mining areas due to the fact that the conventional mining bags are carried by stacking is effectively solved, and the problem is solved.

Specifically, round holes are uniformly formed in the outer portion of the main supporting rod 11, the round holes are formed at fixed distances, and the round holes are formed according to different mining area heights and wall thickness strength, for example, when the wall is 2 m high and 0.5 m thick, the number of vertical installation of the whole anchor rod 15 structure is at least 4.

Because the whole set of anchor rods 15 and the structures at the two ends can be poured and buried, the anchor rods 15 are welded independently, and the anchor rods 15 can be directly welded and combined by adopting structures such as mining area waste reinforced materials and waste anchor rods, so that the mining area waste materials can be reused, the waste of materials is avoided, the construction cost is reduced, and the economical efficiency is improved.

Specifically, the connector 13 includes a screw rod in the outside, and the end of screw rod is by the welding formation of reinforcing bar bending has square cage body structure, square cage body structure's height is slightly greater than the twice of the length of T word head 14 tip horizontal pole, square cage body bottom's width of penetrating the pole hole is less than and is not greater than the half of T word head 14 horizontal pole length, when installing, should be in the outside welding of stock 15 a horizontal pole and directly form into T word head 14, also can weld stock 15 through prefabricated T word head 14 support, after welding stock 15, directly penetrate from the inside of connector 13, during the reentrant, stock 15 inserts the side of cage body structure at first, and insert from the bottom surface of cage body structure, after T word head 14 horizontal pole reaches the cage body side, stand up T word head 14, half horizontal pole from cage body structure side maximum position upset at least 90, thereby reach the position shown in fig. 7 and 8, the connector 13 that supports through the prefabricated mode, T word head 14 and terminal joint 16 are in the scene equipment convenient and fast, reduce the trouble of finding the material, it is more convenient to use.

Specifically, the end connector 16 includes a screw, a circular clamping piece 17 is welded on the outer side of the screw, two ends of the screw outside the end connector 16 symmetrically extend out of the clamping piece 17, one end of the screw can be welded on the anchor rod 15, the other end of the screw is used for penetrating the flexible membrane strip 2, and the flexible membrane strip 2 is fixed through a gasket and a nut, so that the flexible membrane strip 2 is conveniently assembled and fixed between the main support 1.

Specifically, the inside joint of the cage body structure of connector 13 is equipped with T style of calligraphy head 14, and T style of calligraphy head 14 and stock 15 welded fastening, and T style of calligraphy head 14 is a welding body's T font structure, when using, has the effect of being convenient for assemble, the inside at connector 13 that can be convenient for assemble, the temporary fixation of being convenient for.

Specifically, after the wall 5 is formed, according to the shape of a gap between the wall and the outside, a flexible film bag 3 is piled, the flexible film bag 3 is a bag body structure with more than 2 openings, the top of the bag body structure is provided with two openings, one end of the bag body structure can be inserted into a pouring pipe during pouring, the other end of the bag body structure is discharged with gas, the inside of the flexible film bag 3 in the hole is poured with slurry for shaping, and the grouting mode of firstly placing the bag has the effect of utilizing liquid or suspension, so that the plugging effect is improved, and the degree of fit is improved;

the flexible mould bag has the mechanical characteristics of close contact, strong initial support, rapid increase resistance, high resistance and stable constant resistance, and is manufactured by adopting synthetic fiber filaments such as high-strength low-extension polypropylene fiber, polyester fiber and the like as raw materials through a special process, has the advantages of wear resistance, bursting resistance, aging resistance, acid and alkali resistance, high tensile strength and the like, and can control the strength, thickness and aperture according to design requirements.

Specifically, the outside of shutoff core 43 is equipped with sampling door 42 towards the one end of operation face, and the outside welding of sampling door 42 has the handle, and when using, sampling door 42 is in the compound assembly of shutoff core 43 to in practical application, shutoff core 43 inserts or pulls out in the inside of outer tube 41, can realize the shutoff operation of outer tube 41, and shutoff core 43 is preferably made for fire-retardant asbestos core, can be used for laying the gas probe in its side or center department, and the real-time supervision gas concentration of being convenient for can connect the fan convulsions when pulling out and discharge gas, improves the security.

Specifically, the outside of stock 15 has cup jointed diagonal draw bar 18, diagonal draw bar 18 is long stock structure, the welding has the ring at stock structure's both ends, the ring cup joints in stock 15's outside, open structure has been reserved in ring structure's outside, can directly stride across stock 15 when using and cup joint in stock 15's outside, adopt welded mode to fix afterwards, also can use complete ring structure to insert the stock of reserving before welding stock 15 after, weld stock 15 again, also can use great ring, control the size of grip tab 17 in the scope that the ring can pass, the outside of stock 15 is cup jointed again directly in the structure outside after the direct welding stock 15 again.

Specifically, the main supporting rod 11 is L-shaped, the reinforcing rods 12 are welded at the corner positions of the main supporting rod 11, the main supporting rod 11 is preferably welded and combined by adopting an angle steel structure, and when the main supporting rod is used, the bottom of the main supporting rod 11 is directly penetrated and spliced by adopting an anchor rod structure, the main supporting rod 11 is directly fixed on the bottom surface of the main supporting rod, the supporting effect is realized, and the assembly of a subsequent framework structure and the laying of the flexible membrane belt sheet 2 are facilitated.

Specifically, the end joint 16 is screwed with a nut through the flexible membrane strap 2, the joint 13 is screwed with a nut through the main support rod 11, and when the flexible membrane strap 2 is assembled with the screw of the end joint 16, an annular gasket is tightly attached to the inner side of the nut.

When the framework structure is finally formed, the two sides of the framework structure are plugged by the flexible membrane belt sheets 2, the bottoms are paved by the flexible membrane belt sheets 2 according to the requirements, two treatment methods are arranged in the joint positions, the method 1 is combined in a sewing mode, grouting is carried out, then concrete is poured into the gap positions or the outside of the gap positions or plugging materials are poured into the gap positions once, pouring is carried out in the gap positions after the gap positions are waited for shaping, the bottoms can be buried in an embedding mode, and pouring is carried out upwards after the inner bottoms are shaped by a small amount of pouring.

During construction, a complete portable methane oxygen tester is hung in a construction area, and the gas concentration of a construction site is monitored in real time

Before construction, the bottom plate at the position of the beating retaining wall is cleaned and leveled, and large coal and gangue cannot be obtained. The inner side 'skeleton structure' is erected at a position which is about 800mm away from the old pond prop.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The utility model provides a mining end one shot forming shutoff leak protection wind structure, includes skeleton texture, the skeleton texture comprises a plurality of sets of main support (1), its characterized in that: the flexible membrane strip pieces (2) are hung on the inner side and the outer side of the main support (1), a reserved opening (4) is pre-assembled in the flexible membrane strip pieces (2), and after the main support (1), the flexible membrane strip pieces (2) and the reserved opening (4) are pre-embedded, a wall body (5) is cast and formed on the inner side of the flexible membrane strip pieces (2);

the main support (1) comprises a main support rod (11), wherein the front end of the main support rod (11) is uniformly provided with a connector (13), the outer side of the connector (13) is connected with a tail end connector (16) in a hanging manner, and an anchor rod (15) is welded between the connector (13) and the tail end connector (16);

the reserved opening (4) comprises an outer sleeve (41), a plugging core (43) is inserted into the outer sleeve (41), and the plugging core (43) is tightly attached to the outer sleeve (41);

the front end of the main support rod (11) is uniformly welded with a hook (19), and the hook (19) is hung in the main body of the flexible membrane belt sheet (2).

2. The mining end one-time molding plugging and air leakage preventing structure according to claim 1, wherein: round holes are uniformly formed in the outer portion of the main supporting rod (11).

3. The mining end one-time molding plugging and air leakage preventing structure according to claim 2, wherein: the connector (13) comprises a screw rod at the outer side, and the tail end of the screw rod is bent by a reinforcing steel bar and welded to form a square cage body structure.

4. The mining end one-time molding plugging and air leakage preventing structure according to claim 2, wherein: the end connector (16) comprises a screw, and a circular clamping piece (17) is welded on the outer side of the screw.

5. A mining end one-time molding shutoff leak protection wind structure according to claim 3, characterized in that: the inner clamping of the cage body structure of the connector (13) is provided with a T-shaped head (14), and the T-shaped head (14) is welded and fixed with the anchor rod (15).

6. The mining end one-time molding plugging and air leakage preventing structure according to claim 1, wherein: after the wall body (5) is formed, a flexible film bag (3) is piled up according to the shape of a gap between the wall body and the outside.

7. The mining end one-time molding plugging and air leakage preventing structure according to claim 1, wherein: the outside of shutoff core (43), the one end that faces the operation face is equipped with sampling door (42), the outside welding of sampling door (42) has the handle.

8. The mining end one-time molding plugging and air leakage preventing structure according to claim 1, wherein: the outer side of the anchor rod (15) is sleeved with an inclined pull rod (18), the inclined pull rod (18) is of a long anchor rod structure, two ends of the anchor rod structure are welded with circular rings, and the circular rings are sleeved on the outer side of the anchor rod (15).

9. The mining end one-time molding plugging and air leakage preventing structure according to claim 1, wherein: the main support rod (11) is L-shaped, and a reinforcing rod (12) is welded at the corner position of the main support rod (11).

10. The mining end one-time molding plugging and air leakage preventing structure according to claim 3 or 4, wherein: the end joint (16) penetrates through the flexible membrane belt piece (2) and is connected with a nut in a threaded mode, the connector (13) penetrates through the main supporting rod (11) and is connected with the nut in a threaded mode, and when the flexible membrane belt piece (2) is assembled with a screw rod of the end joint (16), an annular gasket is tightly attached to the inner side of the nut.