CN110730843A

CN110730843A - Safety protection system for side wall, long wall, inclined shaft and top plate

Info

Publication number: CN110730843A
Application number: CN201880029969.8A
Authority: CN
Inventors: 韦德·卡塔格
Original assignee: Riel Innovation Australia Pty Ltd
Current assignee: Riel Innovation Australia Pty Ltd
Priority date: 2017-03-06
Filing date: 2018-03-21
Publication date: 2020-01-24
Also published as: EP3592900A4; EP3592900A1; WO2018161130A1; ZA201906512B; AU2018229693A1; US20220154417A1

Abstract

The invention discloses a deviation system and a containing system. The deviation system deviates crushed stones that fall off the longwall or roof. The deviation system comprises: two or more anchors, support ropes between the anchors, deflection nets supported by the support ropes and spaced from the longwall or roof to deflect debris dislodged from the longwall or roof.

Description

Safety protection system for side wall, long wall, inclined shaft and top plate

Technical Field

The present invention relates to the safety of mines, construction sites and the like. And in particular, although not exclusively, to protecting personnel and equipment from debris falling from the mine roof or side walls.

Background

Broken rocks, such as coal briquettes or rocks, have been a hazard to underground coal mines. Especially pieces of coal falling from the side walls or roof, even relatively small pieces, are well recognized as causing injury and death to personnel.

In order to reduce the damage caused by falling broken stones, top plate and side wall supporting equipment can be installed. For example, the supporting equipment can fix unstable rocks and coal blocks by using anchor bolts on the side walls, and directly support the roof plate or the side walls by using supporting nets or supporting plates.

A problem with previous roof and side wall support systems is that they require a high degree of manual labor and are therefore costly. In addition, previous roof and side support system techniques have been prone to failure over time. Especially when it is eroded by weathering, mechanical failure occurs, or when the bearing capacity of the wall surface of the support changes.

In the prior art, when it is confirmed that the timbering system is out of order, a large-sized barrier is generally installed until the timbering equipment can repair the timbering system. This can result in the closing of an area of the mine which is very costly for coal mines, especially where the closed area limits access to critical areas

In addition, a failure in one location of the mine typically extends throughout the mine. Therefore, the repair system is often expensive and time consuming because the support equipment needs to be moved throughout the mine depending on where the failure occurred.

Similar problems exist outside coal mines, such as the construction industry.

Accordingly, there is a significant need for improved side wall, longwall, slant well and roof safety systems, particularly side wall and roof safety systems that are cost effective to install and maintain.

It will be clearly understood that, if a prior art document is referred to again, this reference does not constitute an admission that the document forms part of the common general knowledge in the art in australia or in any other country.

Disclosure of Invention

The present invention is directed to a security system that may overcome, at least in part, at least one of the above-described disadvantages, or provide the consumer with a useful commercial choice.

In view of the foregoing, the present invention resides broadly in a deviation system for deviating fallen rock debris from a longwall, slant well or roof, the deviation system comprising:

2 or more anchors

Ground supporting rope between anchors

A deflecting net supported by the supporting ropes and separated from the long wall or the top plate to deflect the crushed stones falling from the long wall or the top plate

The system is advantageous in that it is designed to deflect the debris rather than to hold it in place

Preferably, the system includes an upper support line for supporting an upper end of the protective screen and a lower support line for supporting a lower end of the protective screen.

The support line is embedded (e.g., sewn into) a protective sleeve at the edge of the protective netting for protecting the support line and/or distributing forces applied to the support line over the protective netting.

Alternatively, the support line may be sewn into a void offset from the protective netting.

The protective netting may be at least partially folded. The protective net can be folded along the upper edge. The two sides of the folded ground can be supported by the support lines.

During production, the support ropes can be sewn on the protective net at the same time.

The protective net may comprise steel wire ropes or ropes of synthetic material

The outer wall surface of the supporting rope can be provided with a high-visibility adhesive tape and/or a protective sleeve

The system may include a 3 rd supporting rope to support the middle portion of the guard net. The 3 rd support rope may be used somewhere, or no longer, to reduce the deviation. This is very advantageous in narrow spaces where only a low degree of deviation is required.

The anchor may comprise a steel plate and an eyelet brushed together with the supporting rope. The steel plate can be 200mmx200mm size, and can be fixed on the top plate or the bottom plate. Mechanical means may also be used for anchoring.

The protective net may have a plurality of devices, each device being about 55mmx55mm in size

The protective netting may be made of Polyester (PET) or polyvinyl alcohol (PVA), or a mixture of 2, and thus will contain fibers b. The protective net can be woven.

Alternatively, the protective net is made of synthetic fibers B

The protective netting may be coated with a fire retardant coating. An antistatic coating can also be arranged on the picture.

The protective netting may be substantially rectangular, with an anchor at each corner.

The deflection system may be configured to deflect debris dislodged from the longwall. The long wall is composed of the side wall of the underground coal mine or the high and low long walls of the metal mine.

The protective netting may extend the length of the longwall from an upper portion of the longwall to a bottom portion of the longwall.

The deflection system is configured to deflect debris dislodged from the longwall. The protective netting may be configured to allow debris to fall to a floor surface at the bottom of the protective netting.

The anchor may be fixed to the long wall and may be offset from that rock. Alternatively or additionally, the anchor may be fixed to the ceiling and/or floor adjacent the longwall

The deviation system may be configured to deviate the gravel from the highwall.

The protective netting may be curved towards the longwall. This can cause the debris to deflect at an angle (rather than directly) if it falls directly onto the screen.

The protective screen may have an opening that can be opened and closed to remove debris that falls onto the protective screen. The opening may be opened and closed by a zipper, or by remote control.

The protective net is preferably extensible. The protective netting can be 40mx1.7 to 2.7m size however, the protective netting can be easily made in any size, including length, and the arrangement of the system can be modified depending on the longwall, side wall or roof panel to be protected.

The deviation system may be used in any downhole or opencast coal mine. Underground coal mines include mines and crushed stone includes coal blocks.

Alternatively, the system may be used in a construction or civil site. The crushed stone may comprise, for example, rock or building material.

The deflecting protective net can deflect the gravel falling from the slope towards the slope. In this case, instead of rolling and jumping down, the crushed stones (such as rocks) slide off the slope face, which causes the crushed stones to be slowed down by friction with the slope.

In this case, the protective netting may be anchored at the top and bottom of the slope. A plurality of overlapped protecting nets can be provided and anchored on the slope, and the area of the covering wall is large.

The support lines may be tied to the lower portion of the protective mesh so that the material can be removed from the bottom of the protective mesh.

Another form is widely known in and for containing crushed stones released from a long wall, the containing system comprising:

2 or more anchors

Supporting rope extended between anchors

And a storage protection net supported by a support rope close to the long wall for storing the broken stones falling from the long wall.

Advantageously, the person can work near the longwall without debris falling onto or trapping the person.

The wall surfaces may be gully walls. The frame may extend into the ravines to provide support for 2 or more anchors. The frame may be tied to 1 or more concrete columns located on the outer walls of the gullies to support the frame. The frame may also engage the walls of the ravines. One or more hydraulic plugs may be used to bias the frame towards the walls of the gullies.

The use of a frame avoids the mutual infrastructure that can occur in gully ground surfaces, which can occur if the frame is driven into the ground.

In other embodiments, 1 or more anchors may be driven into the bottom of the ravines.

The containment system has a similar or identical structure to the deflection system described for the upper wall.

Any feature described in this invention may be combined with any other feature 1 or more of which are within the scope of this invention.

The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that prior art forms part of the common general knowledge.

Drawings

Embodiments of the invention will be described with reference to the following drawings, in which:

FIG. 1 is a perspective planed wall view showing a side deviation system, according to an embodiment of the present invention

FIG. 2 shows a front wall view of the FIG. 1 highwall deviation system, according to an embodiment of the present invention

FIG. 3a shows an end view of the highwall system of FIG. 1, according to an embodiment of the present invention

FIG. 3b shows an end view of the highwall system of FIG. 1 showing the fall of debris from one wall

FIG. 3c end view of the highwall system of FIG. 1 showing deflection of debris away from the protective netting

FIG. 3d is an end view of the highwall system of FIG. 1 showing gravel falling on the wall surface and being supported by the protective netting

FIG. 4 shows an end view of a highwall system, according to another embodiment of the present invention

FIG. 5 shows a front wall view of the highwall deviation system of FIG. 4, in accordance with embodiments of the present invention

FIG. 6 is a cut-away wall view of a highwall deviation system according to an additional embodiment of the present invention

FIG. 7 shows an end view of a top plate deflection system, according to an embodiment of the present invention

FIG. 8 shows a bottom view of the top plate deviation system of FIG. 7, in accordance with embodiments of the present invention

Preferred features, embodiments and variants of the invention, which can be seen from the detailed description of the lower wall, provide sufficient information for a person skilled in the art to carry out the invention. The detailed description is not to be taken as limiting the scope of the preceding summary in any way.

Detailed Description

FIG. 1 shows a perspective cut wall view of a highwall deviation system 100 for deviating gravel dislodged from a downhole coal mine highwall, in accordance with an embodiment of the present invention. The side deviation system 100 prevents injury to personnel and damage to machinery by deviating debris away from personnel and machinery.

The highwall deviation system 100 includes a deviation fence 105 exiting the mine longwall 110 supported by support lines 115, each extending between anchors 120. When the debris falls from the wall 110a, it falls onto the deflection net 105, which deflects the debris toward the wall 110a and may fall onto the mine floor 110 b. Thus, machinery and personnel such as conveyors are protected.

The screen 105 extends along the length of the wall 110a from an upper end adjacent the mine roof 110c to a lower end adjacent the floor 110 b. Thus, debris falling from most areas of the wall 110a can be deflected away by the system 100.

Because the protective screen 105 is located between the wall 110a and the conveyor 125, any debris falling from the wall is prevented from reaching the conveyor and instead falls toward the floor adjacent the conveyor.

As shown in fig. 2, support line 115 is embedded in protective sleeve 205 and deployed along the upper and lower ends of deflection net 105. The protective sleeve 205 is sewn into the edge of the protective mesh 105 to provide protection to the support wires 115 and help spread the forces applied to the support wires 115 over a larger area of the deviation mesh 105.

The anchor 120 comprises a steel plate 120a of about 200mmx200mm size, bolted to the wall using M24 bolts, and an eyelet 120b to which a support rope may be tied.

As shown in fig. 3a, the offset grille 105 is spaced from the wall 110 a. Thus, the deviation fence 105 is not used to brace or secure the wall 110a, but rather to deviate the debris falling from the wall 110a, as shown in fig. 3b-3 d.

Figure 3b shows a piece of rock 305 (e.g. coal) falling from the wall 110. The rock 305 falls down the wall towards the front, hits the protective screen 105 and meanders slightly, deflecting the rock 305 towards the wall 110, as shown in fig. 3 c. The rock may deflect onto the guard net multiple times (e.g., depending on the size of the rock and/or the distance between the wall 110 and the guard net 105)

The protective netting 105 shown in fig. 3a-3b is vertical. However, one skilled in the art will readily appreciate that the protective netting may be angled to reduce the distance between the wall 110 and the protective netting 105. For example, the protective netting may extend towards the inner wall surface of the bottom of the protective netting, leaving limited space for gravel to fall. Or if desired, the protective netting may extend outwardly of the bottom of the protective netting.

The support line 115 is typically made of high strength steel or synthetic rope so that the line 115 can be tightened. The rope may be surrounded by a high visibility tape and/or protective sheath to prevent sharp objects from damaging the rope.

The protective mesh 105 is woven from a Polyester (PET) or polyvinyl alcohol (PVA) material. Alternatively, the mesh 105 is made of synthetic fibers B or other suitable material. The protective screen 105 may be coated with a fire retardant and/or static dissipative coating, as desired.

The guard net 105 may be comprised of about 55mmx55mm pores. The guard net weighs about 300g/m 2. The ultimate tensile strength of the guard net is greater than about 30kN/m 2.

The guard net 105 may be about 40 meters in length. To protect longer areas, protective netting of multiple lengths may be provided. In some embodiments, the protective netting is about 1.7 meters high, but may be of different heights depending on the situation and the size of the area to be protected.

According to other embodiments, the anchors may be placed on the mine roof and floor.

FIG. 4 shows an end view of the highwall deviation system 400 and FIG. 5 shows an elevation view of the rear of the deviation system 400, in accordance with an embodiment of the present invention. The system 400 is very similar to the deviation system 100 for deviating gravel falling from a downhole highwall.

The system 400 includes a deflector guard 105 spaced from the wall 110a to deflect debris back toward the wall 110a and thus down to the ground to protect personnel and machinery, similar to the system 100 of fig. 1. However, the support line 415 of the system 400, deployed along the protective mesh 105, is deployed between the anchor 420 of the top panel 110c and the anchor of the bottom panel 110b, respectively.

In particular, as shown in fig. 5, support cords 415 pass through the sheath 205, up to the anchor 420 of the top plate 110c (in the upper support cords 415), or down to the anchor 420 of the bottom plate 110b (in the bottom support cords 415). This allows the wall 110a to be protected without any need for anchoring to the wall 110 a. This therefore allows flexibility in the configuration of the guard net 105 in terms of the wall 110a, which is particularly advantageous when the guard net is close to a machine, such as a conveyor 405 or in a narrow area of space.

In other embodiments, the protective mesh 105 does not include a sheath that fits over the support cords 415, and the support cords 415 are threaded into the protective mesh 105. The protective mesh 105 may be at least partially foldable to provide additional strength and reduce the likelihood of debris damaging the protective mesh 105.

The system 400 may be partially or fully supported by steel columns to eliminate or reduce the need for floor latches.

Further, in some embodiments, a 3 rd or more support line may be used to reduce the deviation. This is particularly advantageous in situations where only a low level of deviation occurs in a confined space.

FIG. 6 illustrates a planing surface of a portion of the highwall offset system 600, according to an embodiment of the present invention. The deviation system 600 is very similar to the

deviation systems

100 and 400 for deviating debris dislodged from a mine highwall.

The system 600 includes a deflector guard 605 that is spaced from the longwall face of the mine shaft 110a to deflect the debris toward the longwall face 110a and then fall to the ground, as in the system 100 of fig. 1 and the system 400 of fig. 4, to protect personnel and machinery. However, the protective mesh 605 is folded and the support cords 615a-c are woven into the protective mesh at the upper, middle and lower ends of the protective mesh.

In particular, the mesh guard material is folded to have 2 layers of mesh guard material at the upper end of mesh guard 605, and the bottom end of mesh guard 605 is made of 1 layer of mesh guard material. The upper support wires 615 are woven into the 2-layer screen material, as are the middle support wires. The support ropes 615 at the bottom are woven into 1 layer of the protective net material.

The support lines 615a-c may be anchored at either end of the system 600 in any manner, such as in the manner described in fig. 1, or in the manner described in fig. 4.

The inventors have found that folding the protective netting and braiding the supporting cords into the protective netting, as described above, results in a system that resists tearing more than if the sheath were sewn into the protective netting as described in fig. 1 or 4.

A middle support rope may be installed in certain areas, such as near critical equipment, to reduce the standoff. Thus, the installation complexity is reduced at the base away from the unimportant areas, which reduces the overall installation costs.

The

deviation systems

100, 400, 600 described above may be modified to deviate debris that has fallen off the mine roof 110 c. Thus, the mine can be protected from both sides and from above.

Fig. 7 illustrates a bottom end view of a top plate deviation system 700, according to an embodiment of the present invention. The deviation system 700 is very similar to the

deviation systems

100, 400 and 600, but it is a system that deviates crushed stone that has come off the roof of a coal block downhole.

The system 700 includes a deflector guard 705 spaced from the roof 110c to deflect debris dislodged from the roof 110c, which falls onto the upper wall of the guard 705 and is then safely removed to protect personnel and machinery.

The supporting rope 710 extends along the length of the protecting net 705, is sleeved in the sheath 205 and then extends outwards to the position of the anchoring 720 on the other side of the long wall surface 110 a. The protective netting 705 is angled away from the roof 110c and away from the longwall face of the mine. This causes the debris to deflect at an angle if it were to fall vertically (rather than fall directly), as shown by exemplary debris 715 in fig. 7.

As shown in fig. 8, a zipper 725 may provide a reusable opening extending along the length of the system 700 that may be opened to remove debris from the protective netting 705. The protective rope or other extension cord can be tied to the zipper to enable a person to unzip the zipper and allow the gravel to fall to the ground surface at a safe distance.

The system described above may be used to provide a barrier, for example, in the event of a failure of the primary support screen, without the need for immediate repair of the primary support screen. In particular, this system can be used until an assisting team can install a more permanent barrier and make the assisting team work more efficiently, rather than go around the mine with the latest failures (which is inefficient and costly).

In some embodiments, the system may be used to provide a barrier for a longer period of time.

Although the above describes mounting to an anchor, the system may be mounted using existing bolts and anchors.

Furthermore, although the system described above is primarily directed to coal mines, the system may be used as a barrier in other mines, underground or otherwise.

Similarly, the system may be used in connection with construction ravines, or the like, to act as a barrier to structural damage.

In some illustrative embodiments, the system includes a containment system for containing ground debris falling from walls, such as gully surfaces. In this case the system is very similar in construction, but the closer the protective netting is to the wall, the closer the personnel can work against the wall without the risk of falling or getting trapped.

In some embodiments, the frame may extend into the ravines to provide support for anchoring. The mounting frame can be simplified, and the cost is reduced.

The frame may be tied to one or more concrete columns located outside the ravines to provide support for the frame. Therefore, the frame can be quickly and easily transported to a designated location.

The frame may also engage the gully surfaces. In the illustrated example, 1 or more hydraulic plugs may be used to bias the frame toward the gully surface. However, those skilled in the art will readily appreciate that other suitable deviations may be substituted for the hydraulic plug.

Advantageously, the framework avoids the mutual infrastructure that may occur in a gully ground, which may occur if the framework is driven into the ground.

In other embodiments, 1 or more anchors may be driven into the bottom of the ravines, as described above, to support the frame, or to support the protective netting, either directly or indirectly.

The containment system has a similar or identical structure to the deviating system described above.

Advantageously, the system described above is less expensive and more reusable than secondary support structures. In particular, the protective mesh may be moved and used downhole as desired.

In this specification and claims, if any, the word "comprise", and its derivatives (including "and" comprise ", in the singular) include each of the stated integers but do not preclude the inclusion of one or more other integers.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner, in one or more combinations.

In accordance with this statute, the invention has been described in language more or less specific as to structural or methodical features. It is to be understood that the invention is not limited to the specific features shown or described, since the means herein described comprise preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted by those skilled in the art.

Claims

1. A deviation system for deviating crushed stone from a longwall, slant well or roof landing, the deviation system comprising:

two or more anchors;

a support line between the anchors;

a deflecting net supported by the supporting ropes, separated from the longwall or the roof, and configured to deflect the crushed stone of the wall surface or the roof.

2. The deviation system according to claim 1, comprising an upper end support line to support the upper part of the deviation net and a lower end support line to support the lower part of the deviation net.

3. The deflection system of claim 1, wherein the support line is nested in a protective sleeve attached to the edge of the protective net.

4. The deflection system of claim 1, wherein the support cords are woven into the apertures of one or more deflection meshes.

5. The deviation system of claim 1 wherein the protective screen is at least partially collapsible, the protective screen being supported on both sides by support cords.

6. The deviation system according to claim 1, wherein the support wires are woven into the protective mesh at the same time as the protective mesh is produced.

7. The deviation system of claim 1, wherein the supporting rope is made of steel wire rope or synthetic rope.

8. The deviation system according to claim 1, wherein the support rope is provided with a high visibility tape and/or protective sheath.

9. The deviation system according to claim 1, wherein a third support rope is provided to support the middle portion of the protective screen.

10. The deviation system of claim 9 wherein in certain areas a third support line is provided to support the middle of the protective screen to reduce deviation in this area and in other areas no support is provided for the middle of the protective screen.

11. The deviation system of claim 1 wherein the anchor comprises a steel plate and an eyelet to which the support line may be tied.

12. The deflection system of claim 1, wherein the protective screen is formed from a plurality of apertures, each aperture being about 55mmx55mm in size.

13. The deviation system according to claim 1, wherein the support line is made of Polyester (PET) or polyvinyl alcohol (PVA), or other mixtures, and contains fibers B for reinforcement.

14. The deflection system of claim 1, wherein the protective mesh is overcoated with a fire retardant coating.

15. The deflection system of claim 1, wherein the protective mesh is overcoated with an antistatic coating.

16. The deviation system of claim 1 wherein the guard net is a large rectangular shape with an anchor at or near each corner.

17. The deviation system of claim 1, wherein the deviation system is a deviation of crushed stone from a wall surface.

18. The deviation system of claim 17 wherein the protective netting extends along the wall from an upper end of the wall to a lower end of the wall.

19. The deviation system of claim 17 wherein the protective netting deflects the debris back toward the wall.

20. The deviation system of claim 17 wherein the protective screen allows debris to fall to the ground at the bottom of the protective screen.

21. The deviation system of claim 17 wherein the anchor is fixed to a wall from which crushed stone may be deviated.

22. The deviation system according to claim 17 wherein the anchor is fixed to the top and/or bottom plate adjacent the wall from which debris may be deviated.

23. The deviation system of claim 1 wherein the system deviates crushed stone from the roof.

24. The deviation system of claim 23 wherein the protective screen is angled downwardly at one end to deflect debris at an angle.

25. The deflection system of claim 23, wherein the protective screen includes reusable openings to remove debris received by the protective screen.

26. The biasing system of claim 25, wherein the opening is zippered or opened by remote control.

27. The deviation system of claim 1 wherein the protective screen is extendable.

28. The deviation system of claim 26 wherein the protective screen is about 40m x 1.7.7-2.7 m in size.

29. The deviation system according to claim 1, wherein the wall, shaft or roof forms a slope, and the deviation system deviates debris falling from the slope towards the slope.

30. The deviation system of claim 28 wherein the protective netting is anchored at the top and bottom of the ramp.

31. The deviation system of claim 1 wherein the system comprises a plurality of repeating protective nets.

32. A containment system for containing debris falling from a longwall, the containment system comprising:

two or more anchors;

a support line between the anchors; and

a containment net supported by the support rope adjacent the longwall and configured to contain debris falling from the longwall.

33. The enclosure system of claim 1 wherein the long wall comprises a long wall of a trench.

34. The containment system of claim 32, comprising a frame extending into the channel to provide support for the two or more anchors.

35. A containment system according to claim 33, wherein the frame is connected to one or more concrete blocks on the outside of the trench to support the frame.

36. The enclosure system of claim 33 wherein the frame is configured to engage a longwall of the trough.

37. A containment system according to claim 35, wherein the frame is placed against the long wall of the channel using one or more hydraulic rams.

38. The containment system of claim 31, wherein one or more anchors are driven into the bottom of the trench.