CN212927936U

CN212927936U - Simple device for underground waste rock blocking and isolation

Info

Publication number: CN212927936U
Application number: CN202021725529.7U
Authority: CN
Inventors: 杨科; 赵新元; 魏祯; 付强; 刘文杰; 吕鑫
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-09
Anticipated expiration: 2030-08-18

Abstract

The invention discloses a simple underground waste rock blocking and isolating device for performing waste rock blocking, isolating and other operations on a goaf at one side of an underground roadway. The device mainly comprises a main body plate, a protruding plate, an iron wire hole, a lifting handle, an auxiliary component and the like. Grouting holes can be drilled in the middle of the main body plate as required. A rectangular high-strength protruding plate with a small area is welded at one end of the main body plate. In order to fix the waste rock blocking plate so that the waste rock blocking plate does not topple when being erected, one or two iron wire holes are drilled at the position back to the roadway pillar. And a handle is welded at the middle position of the back side of the waste rock blocking plate. The device is convenient to operate, simple and easy to operate, free to disassemble and assemble, cost-saving and high in sealing performance, can prevent stones in the goaf from flowing into a roadway, and has good economical practicability in the aspects of isolating harmful gases such as smoke dust, gas and the like in the goaf and sealing a temporary chamber.

Description

Simple device for underground waste rock blocking and isolation

Technical Field

The invention belongs to the technical field of underground roadway support in coal industry.

Background

In the solid filling entry retaining engineering in pit, the tamping mechanism on the filling support can bulldoze the tamp to the accumulational filling material that falls scattered in collecting space area, when the tamping operation carried out the working face end position, if do not take on entry retaining one side and keep off the waste rock isolation measure, filling material can gush into in the tunnel under tamping mechanism's effect, and the self-reliance stability and the bearing capacity of lane side obturator are not enough to support the roof and sink simultaneously, often lead to the entry retaining failure.

In the field practice process of filling and retaining roadways, a dense support method is adopted to prevent solid materials at the side of an isolated goaf from scattering and rushing into the roadway. The method needs more pillars, the pillars are expensive, the weight of the single body is large, the cost of filling the entry retaining and the labor amount of workers are increased, meanwhile, the pillars are arranged in parallel, the potential safety hazard is increased, the pillars cannot be completely and compactly arranged, the tightness is poor, and uneven and irregular indentations can be formed on the surface of the roadside filling after the pillars are removed. And wood is adopted for sealing, a wood board material is erected between the two support columns, the mechanical property of the wood board material is poor, the wood board is often subjected to large stress in field application to cause the phenomenon of fracture and damage, the material is wasted, the waste rock blocking effect is poor, and the requirements of environmental protection and the like cannot be met. And in addition, the methods of supporting and retaining waste rock on the entry retaining side by adopting concrete walls, bricking into walls and the like are adopted on site, but the methods are less in application due to the defects of high cost, complex process, large labor workload of workers, incapability of recycling materials and the like. Therefore, the invention needs to improve a simple device for blocking and isolating the waste rock underground.

Disclosure of Invention

Based on the technical current situation, the underground simple waste rock blocking and isolating device is designed and invented according to the principles of safety, economy, practicality, environmental protection and the like in order to solve the problems that dense pillars are poor in waste rock blocking and isolating tightness, traditional wood baffles are poor in strength and mechanical properties, concrete brick walls are complex in process and high in cost.

The invention provides the following technical scheme:

a simple device for blocking and isolating underground waste rock is characterized in that a main body part of the device is a rectangular high-strength metal plate, and the plate is mainly made of an iron plate or a steel plate. On the premise of ensuring that the plate can resist and bear lateral pressure of gangue in a goaf without bending deformation, the thickness of the plate is reduced as much as possible, and the weight of the device is prevented from being increased. The height of the plate is generally 30-50 cm according to the height of a stope filling body. The width of board is not less than general tunnel pillar interval, can take 80 ~ 100cm according to actual conditions, wherein close to the working face position as the initial position of setting up the waste rock blocking board, and the waste rock blocking board width that is used for here should guarantee to leave certain margin when satisfying two adjacent pillar widths, and the margin can be generally 10 ~ 20 cm. Grouting holes can be drilled in the middle of the main body plate as required. The end of the main body plate is welded with a rectangular high-strength protruding plate with a smaller area for connecting, meshing and fixing the next waste rock blocking plate, so that the gap between the waste rock blocking plates is closed, and meanwhile, the deformation and instability of the joint position of the next waste rock blocking plate are prevented. In order to fix the waste rock blocking plate so that the waste rock blocking plate does not topple when being erected, two holes are drilled at the position back to the roadway support, and the size of each hole is about 1cm generally based on the fact that a fixed iron wire can penetrate through the hole. A handle is welded in the middle of the back side of the waste rock blocking plate, so that personnel can carry and carry the waste rock blocking plate conveniently.

As a preferred technical scheme of the invention, one end of the main body plate is welded with a rectangular high-strength protruding plate.

As a preferable technical scheme of the invention, a handle is welded at the middle position of the main body plate.

As a preferred technical scheme of the invention, one or two holes are drilled on two sides of the main body plate, and the fixed iron wire can pass through the holes.

As a preferable technical scheme of the invention, the gangue blocking plate at the initial position is longer than the gangue blocking plates at other positions, and the gangue blocking plates are enough to lean against two pillars.

The invention has the following advantages:

the device has certain innovativeness, practical feasibility, operability and economic practicability, solves the problems of poor tightness of gangue blocking isolation of the dense pillars and poor strength mechanical property of the traditional wood baffle, and compared with a concrete brick wall, the device is convenient to operate, simple and feasible, free to disassemble and assemble, cost-saving, capable of reducing labor workload of workers, capable of fully utilizing roadway hydraulic pillars as supports, and good in tightness, and capable of bearing lateral pressure applied by materials such as gangue on the side of a goaf in a stacking mode. The device is not only used for the tunnel waste rock blocking operation in the filling and retaining engineering, but also suitable for the operations of goaf isolation, stope chamber temporary sealing, temporary ventilation route changing, blocking and isolating goaf stones, smoke dust, gas and the like under the mining condition of a caving method, plays a role in protecting the safety of the tunnel, has wide application and good applicability, and achieves the effect of achieving multiple purposes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the underground roadway gangue stopping and isolating device.

FIG. 2 is a schematic connection diagram of the simple waste rock blocking device.

Fig. 3 is a front view of fig. 1.

In the figure: 1. a hydraulic support; 2. a pillar; 3. a waste rock blocking plate; 4. a protruding plate; 5. a handle; 6. fixing an iron wire; 7. iron wire holes; 8. a main body plate; 9. a roadway roof; 10. a roadway floor; 11. a coal seam; 12. and (4) collecting the goaf.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 2, a simple device for underground waste rock blocking and isolation, a main plate 8 is a rectangular high-strength metal plate, and the material mainly includes an iron plate or a steel plate. On the premise of ensuring that the plate can resist and bear the lateral pressure of the gangue from the goaf 12 without bending deformation, the thickness of the plate is reduced as much as possible, and the weight of the device is prevented from being increased. The height of the main body plate 8 is generally not less than 30cm according to the height of a stope filling body. The width of the plate is not less than the distance between the general roadway pillars 2 and is not less than 80cm according to the actual situation, the position close to the working surface is used as the initial position for building the waste rock blocking plate 3, the width of the waste rock blocking plate 3 used for the position is ensured to meet the width of two adjacent pillars, meanwhile, a certain margin is reserved, and the margin is not less than 10 cm. Grouting holes and the like can be drilled in the middle of the main body plate 8 as required. The end of the main body plate 8 is welded with a rectangular high-strength protruding plate 4 with a smaller area for connecting, meshing and fixing the next waste rock blocking plate 3, so that the gap between the waste rock blocking plates 3 is closed, and meanwhile, the joint position of the next waste rock blocking plate 3 is prevented from deforming and destabilizing. In order to fix the waste rock blocking plate 3 so that the waste rock blocking plate does not topple when being erected, two iron wire holes 7 are drilled at the positions of the back attaching pillars 2, and the size of the holes is about 1cm generally based on the fact that the fixed iron wires 6 can penetrate through the holes. A handle 5 is welded at the middle position of the back side of the waste rock blocking plate 3, so that the waste rock blocking plate 3 can be conveniently carried and carried by personnel.

Example two

Referring to fig. 1-3, the gangue-blocking plates 3 are installed in a front-to-back and bottom-to-top direction, that is, the pillars 2 of the end roadway close to the face support are used as initial positions, and the gangue-blocking plates 3 are installed in the rear direction of the goaf 12 in a width-by-width manner, and the bottom positions of the pillars 2 are firstly erected during installation, and then the gangue-blocking plates 3 are upwards and gradually stacked. The roadway bottom plate 10 should be level and smooth, carry first waste rock blocking plate 3 to initial position earlier, upright waste rock blocking plate 3, back of the body pastes pillar 2, the adjustment position makes the wire hole 7 on the waste rock blocking plate 3 correspond with the position coordination of pillar 2, then pass wire hole 7 with fixed iron wire, bind waste rock blocking plate 3 and pillar 2 into an organic whole, after fixing first waste rock blocking plate 3, stack second waste rock blocking plate 3 above it, analogize so, stack waste rock blocking plate 3 in proper order, until contacting with roadway roof 9, carry out the waste rock blocking plate 3 of next step according to work. When the waste rock blocking plate 3 is disassembled, the sequence is opposite to the installation sequence, and the disassembly is carried out from top to bottom from the back to the front. When the movable gangue blocking plate is detached, the fixed iron wire is firstly cut off, and a hammer or other tools are used for striking the space between the pillar 2 and the protruding plate 4 backwards, so that the gangue blocking plate 3 slowly slides backwards until the gangue blocking plate is completely taken out.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Claims

1. The utility model provides a simple and easy device is kept off to waste rock in pit, including main part board (8), protrusion board (4), iron wire hole (7), handle (5) and auxiliary component etc, a serial communication port, can bore as required and get slip casting hole etc. in the middle of main part board (8), main part board (8) one end welds a rectangle high-strength protrusion board (4) that the area is less, for fixed waste rock fender (3) make it not take place to empty when setting up, bore one or two iron wire holes (7) in the position of back of the body subsides tunnel pillar (2), handle (5) are welded to dorsal part intermediate position at waste rock fender (3).

2. The simple device for underground waste rock blocking and isolation as claimed in claim 1, wherein the main plate (8) is a rectangular high-strength metal plate, and the main material of the plate is mainly iron plate or steel plate.

3. A mine spoil barrier simplicity device as claimed in claim 1 or claim 2 wherein the thickness of the body panel (8) is minimized to avoid increasing the weight of the device while ensuring that the panel will resist lateral pressure from the gob (12) without buckling.

4. A downhole gangue stopping and isolating simple device according to claim 1, characterized in that the height of said main body plate (8) is generally not less than 30cm according to the height of stope filling body.

5. The simple device for underground waste rock blocking and isolation as claimed in claim 1, wherein the width of the main body plate (8) is not less than the spacing between the general roadway pillars and is not less than 80cm according to actual conditions, wherein the position close to the working face is used as the starting position for building the waste rock blocking plate, the width of the waste rock blocking plate (3) used at the position is ensured to meet the width of two adjacent pillars, and a certain margin is reserved, and the margin is not less than 10 cm.

6. The simple underground gangue blocking and isolating device as claimed in claim 1, wherein a grouting hole, a gas pumping hole, an observation hole and the like can be drilled at the middle position of the main body plate (8) according to requirements.

7. The simple underground gangue blocking and isolating device as claimed in claim 1, wherein the protruding plate (4) is used for connecting, meshing and fixing the next gangue blocking plate (3) to seal the gap between the gangue blocking plates (3) and prevent the joint position of the next gangue blocking plate (3) from deforming and destabilizing.

8. The simple device for underground waste rock blocking and isolation as claimed in claim 1, wherein a wire hole (7) is drilled on one side of the main body plate (8) and used for fixing the waste rock blocking plate (3) on a pillar, so that the waste rock blocking plate does not topple over in the building and stacking process.

9. The simple device for underground waste rock blocking and isolation as claimed in claim 1, wherein a handle (5) is welded at the middle position of the back side of the main body plate (8) and is used for facilitating personnel to carry and carry the waste rock blocking plate (3).