CN210037426U

CN210037426U - Gangue filling bulldozes tamping test case

Info

Publication number: CN210037426U
Application number: CN201920415114.0U
Authority: CN
Inventors: 程立朝; 李丽; 李新旺; 赵新元; 秦义岭
Original assignee: Hebei University of Engineering
Current assignee: Hebei University of Engineering
Priority date: 2019-01-02
Filing date: 2019-03-29
Publication date: 2020-02-07
Anticipated expiration: 2029-03-29

Abstract

The utility model belongs to the technical field of coal industry gangue filling exploitation, especially, relate to a gangue filling bulldozes tamping test case. The utility model provides a waste filling bulldozes tamping test case mainly provides waste filling simulation experiment in-process to waste filling material's filling, the experimental space of pushing away to smash and tamp, be used for the supplementary research to fill waste filling material's the compaction and consolidation shaping characteristic, and filling material bulldozes the motion state after the tamping and the bearing capacity of the obturator etc., not only more real reduction scene fills the work flow, and facilitate for the mechanical characteristic of the research obturator, provide the reference for industrial test.

Description

Gangue filling bulldozes tamping test case

Technical Field

The utility model belongs to the technical field of coal industry gangue filling exploitation, especially, relate to a gangue filling bulldozes tamping test case.

Background

The waste filling technology is a main modern coal mine green mining technology, waste such as waste rock and the like in the coal mine production process is utilized for underground goaf backfilling, and the method not only obtains remarkable economic and social benefits, but also plays an important role in improving the production living environment of a mining area and solving the problems of third-time coal pressing and the like. In the actual coal mine filling process, a special filling hydraulic support is usually adopted, mixed filling materials are put into a goaf from a discharge hole of a conveyor at the rear part of the hydraulic support, then a tamping mechanism is used for pushing and tamping filling gangue on one side of the goaf, the amount of the filled gangue which is not connected to the top is reduced, the density and the filling rate of the gangue are increased, and the density and the filling rate of the filling gangue directly relate to the quality and the effect of coal mine gangue filling. Aiming at the aspects of filling the compactness and the filling rate of the waste rock, the research results are more at present, but most of the research results are experimental research on the axial compression characteristic of the filling waste rock by designing and utilizing a compression steel barrel, and the research results and literature data are fresh research results for designing and utilizing a test waste rock filling device to transversely push and press the filling waste rock so as to research the pushing and compacting characteristic of the filling waste rock in a laboratory, and fresh data for researching the motion state of the filling waste rock after pushing and pressing, the consolidation and forming property of the filling waste rock and the like. Therefore, based on this thinking, the utility model provides a waste filling bulldozes tamping test case and waste filling bulldozes tamping method.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems in the prior art, the gangue filling pushing and tamping test box is suitable for a gangue filling pushing and tamping similar simulation experiment in a laboratory, can transversely push filling gangue to research the pushing and tamping characteristics of the filling gangue in the laboratory, and can research the motion state of the filling gangue after pushing and tamping, the consolidation and forming properties of the filling gangue and the like.

The utility model provides a waste filling bulldozes tamping test case mainly provides waste filling simulation experiment in-process to waste filling material's filling, the experimental space of pushing away to smash and tamp, be used for the supplementary research to fill waste filling material's the compaction and consolidation shaping characteristic, and filling material bulldozes the motion state after the tamping and the bearing capacity of the obturator etc., not only more real reduction scene fills the work flow, and facilitate for the mechanical characteristic of the research obturator, provide the reference for industrial test.

The utility model discloses a gangue filling bulldozes tamping test box, the test box includes bottom plate, front bezel, back plate and left and right curb plate that the screw fastening is fixed, the front bezel middle part is provided with the circular port; in order to facilitate the disassembly of the top plate and the maintenance and repair of articles in the box body, the compaction box top plate consists of a plurality of detachable steel bars, the top plate which is not sunk in the goaf is simulated, and the detachable steel bars are fixedly connected with the top ends of the left side plate and the right side plate through bolts; a pushing plate capable of moving back and forth is arranged in the compaction box, and a sleeve capable of penetrating through a circular hole in the middle of the front plate is arranged in the middle of the pushing plate; the piston rod of the jack is connected with the pushing and pressing plate through the sleeve, so that the piston rod of the jack can stretch conveniently, and the pushing and pressing tamping effect on the filling materials in the box body is realized; the part of the top plate of the compaction box close to the front plate is not closed, so that a piston rod of the jack can extend outwards and move up and down.

The detachable steel bars are four steel bars with the width of 40mm and the thickness of 20mm, the four steel bars can be detached to simulate different emptying and filling steps of a goaf, namely one detachable steel bar simulates an emptying step, and A, B, C, D four letters are sequentially engraved on each detachable steel bar from the rear part to the front part of the box body to represent the mutual position relation of the detachable steel bars; each steel bar can be detached, a press machine and a corresponding pressing plate are utilized to axially compress the filling materials after transverse pushing and pressing, and the axial compression mechanical properties of the filling materials are researched.

The bottom plate, the front plate, the left side plate and the right side plate are steel plates with the thickness of 10 mm; in order to ensure that the jack can provide enough supporting force without deformation, the rear plate is a steel plate with the thickness of 20 mm; the thickness of the detachable steel strip is 10mm, the height of the compaction box is 270mm, and the height of the internal space is 250 mm.

Handles are respectively arranged at the top of the front plate and the rear plate of the compaction box. The weight of the whole filling and compacting box is about 25kg, and the inner and outer surfaces are coated with a layer of dark gray paint. The whole device is regular, clear in edges and corners, firm and firm, and can bear pressure of more than 20MPa without deformation and damage.

The utility model discloses a waste filling bulldozes tamping test case, operation process is: take the simulation of two emptying and filling steps as an example. C and D are firstly disassembled from four detachable steel bars on the upper portion of the box body, then the proportioned filling material is vertically dumped into the box body along the edge of the steel bar B and downwards 20mm until the stacking height of the waste rock material in the box body is close to the dumping opening, the jack is shaken to enable a piston rod to slowly extend out, a sleeve on a pushing plate is extended into the box body to push the pushing plate to advance towards the interior of the box body, the filling material is compressed to the rear portion of the box body, then the pushing plate is retracted, the material is placed into the box body according to the method again, the pushing plate is compressed again, the two steel bars A and B on the upper portion of the box body are disassembled, a handle is screwed into a bolt hole on the upper portion of the box body to enable the handle to be a firm handle, then the box body is lifted onto a pressure testing machine to axially compress the waste.

The utility model discloses a waste filling bulldozes tamping test case, the structure is simplified, and processing is convenient, and easy operation saves the cost, can master the nature and the law of research object through the analog simulation test of low-cost, has saved a large amount of manpowers, material resources, financial resources of industrial test, and the time cost and the uncertain risk that has reduced the industrial test result, economic application effect is comparatively showing. The device is easy to carry, and can change the design of relevant parameters, satisfy the requirement of different experimental parameters.

Drawings

FIG. 1 is the utility model discloses a waste filling bulldozes structure elevation of tamping test case

FIG. 2 is the utility model discloses a waste filling bulldozes structure right side view of tamping test case

FIG. 3 is the utility model discloses a waste filling bulldozes structure plan view of tamping test case

In the figure: bottom plate 22, front plate 23, rear plate 24, circular holes 25, removable bars 26, bolts 27, push plate 28, sleeve 29.

Detailed Description

As shown in fig. 1-3, it is a schematic structural diagram of the gangue filling pushing and pressing tamping test box of the present invention.

A waste filling pushing tamping test box comprises a bottom plate 22, a front plate 23, a rear plate 24, a left side plate and a right side plate which are fastened and fixed through screws, wherein a circular hole 25 is formed in the middle of the front plate 23; in order to conveniently detach the top plate and conveniently maintain and repair objects in the box body, the compaction box top plate consists of a plurality of detachable steel bars 26, the top plate which is not sunk in the goaf is simulated, and the detachable steel bars 26 are fixedly connected with the top ends of the left side plate and the right side plate through bolts 27; a pushing plate 28 capable of moving back and forth is arranged in the compaction box, and a sleeve 29 capable of penetrating through the circular hole 25 in the middle of the front plate 23 is arranged in the middle of the pushing plate 28; the piston rod of the jack is connected with the pushing plate 28 through the sleeve 29, so that the piston rod of the jack can be conveniently stretched, and the pushing and tamping effects on the filling materials in the box body are realized; the top plate of the compaction box is not closed near the front plate 23, so that the piston rod of the jack can extend outwards and move upwards and downwards.

The detachable steel bars 26 are four steel bars with the width of 40mm and the thickness of 20mm, the four steel bars can be detached to simulate different emptying and filling steps of the goaf, namely one detachable steel bar 26 simulates an emptying step, and A, B, C, D four letters are sequentially engraved on each detachable steel bar 26 from the rear part to the front part of the box body to represent the mutual position relation of the detachable steel bar 26; each steel bar can be detached, a press machine and a corresponding pressing plate are utilized to axially compress the filling materials after transverse pushing and pressing, and the axial compression mechanical properties of the filling materials are researched.

The bottom plate 22, the front plate 23, and the left and right side plates are steel plates with the thickness of 10 mm; in order to provide sufficient supporting force without deformation, the rear plate 24 is a steel plate with a thickness of 20 mm; the detachable steel strip 26 has a thickness of 10mm, a height of the compacting box of 270mm, and a height of the inner space of 250 mm.

The top of the front and

rear panels

23, 24 of the compression box are provided with handles. The weight of the whole filling and compacting box is about 25kg, and the inner and outer surfaces are coated with a layer of dark gray paint. The whole device is regular, clear in edges and corners, firm and firm, and can bear pressure of more than 20MPa without deformation and damage.

The utility model discloses a waste filling bulldozes tamping test case, its operation process is: take the simulation of two emptying and filling steps as an example. C and D are firstly disassembled from four detachable steel bars on the upper portion of the box body, then the proportioned filling material is vertically dumped into the box body along the edge of the steel bar B and downwards 20mm until the stacking height of the waste rock material in the box body is close to the dumping opening, the jack is shaken to enable a piston rod to slowly extend out, a sleeve on a pushing plate is extended into the box body to push the pushing plate to advance towards the interior of the box body, the filling material is compressed to the rear portion of the box body, then the pushing plate is retracted, the material is placed into the box body according to the method again, the pushing plate is compressed again, the two steel bars A and B on the upper portion of the box body are disassembled, a handle is screwed into a bolt hole on the upper portion of the box body to enable the handle to be a firm handle, then the box body is lifted onto a pressure testing machine to axially compress the waste.

Claims

1. A waste filling pushing and tamping test box is characterized by comprising a bottom plate (22), a front plate (23), a rear plate (24) and left and right side plates which are fastened and fixed by screws, wherein the middle part of the front plate (23) is provided with a circular hole (25); the compaction box top plate consists of a plurality of detachable steel bars (26), a top plate which is not sunk in the goaf is simulated, and the detachable steel bars (26) are fixedly connected with the top ends of the left side plate and the right side plate through bolts (27); a pushing plate (28) capable of moving back and forth is arranged in the compaction box, and a sleeve (29) capable of penetrating through a circular hole (25) in the middle of the front plate (23) is arranged in the middle of the pushing plate (28); a piston rod of the jack is connected with the pushing plate (28) through a sleeve (29), so that the piston rod of the jack can be conveniently stretched, and the pushing and tamping effects on the filling materials in the box body are realized; the part of the top plate of the compaction box, which is close to the front plate (23), is not closed, so that a piston rod of the jack can extend outwards and move up and down; the detachable steel strip (26) has a thickness of 10mm, a height of the compacting box of 270mm, and a height of the inner space of 250 mm.

2. A gangue filling push-press tamping test box according to claim 1, characterized in that the detachable steel bars (26) are four steel bars with a width of 40mm and a thickness of 20mm, the four steel bars are detachable to simulate different emptying and filling steps of a goaf, i.e. one detachable steel bar (26) simulates an emptying step, and from the rear to the front of the box body, A, B, C, D four letters are carved on each detachable steel bar (26) in sequence to show their mutual position relation; each steel bar can be detached, a press machine and a corresponding pressing plate are utilized to axially compress the filling materials after transverse pushing and pressing, and the axial compression mechanical properties of the filling materials are researched.

3. The gangue filling pushing and tamping test box according to claim 1, wherein the bottom plate (22), the front plate (23), and the left and right side plates are steel plates with the thickness of 10 mm; in order to provide sufficient support without deformation, the rear plate (24) is a steel plate with a thickness of 20 mm.

4. A gangue filling push and press tamping test box according to claim 1, characterized in that the top of the front (23) and rear (24) plates of the box are provided with handles; the weight of the whole filling and compacting box body is about 25kg, and the pressure of the whole filling and compacting box body can be borne by more than 20 MPa.