CN117868926B - Advanced temporary support device and process for working face of heading machine - Google Patents
Advanced temporary support device and process for working face of heading machine Download PDFInfo
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- CN117868926B CN117868926B CN202410274776.6A CN202410274776A CN117868926B CN 117868926 B CN117868926 B CN 117868926B CN 202410274776 A CN202410274776 A CN 202410274776A CN 117868926 B CN117868926 B CN 117868926B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 103
- 239000002184 metal Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 71
- 210000001503 joint Anatomy 0.000 claims abstract description 11
- 230000005641 tunneling Effects 0.000 claims description 9
- 239000011435 rock Substances 0.000 abstract description 14
- 230000001681 protective effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention belongs to the field of underground safety operation, and relates to an advanced temporary support device and process for a working face of a heading machine. The temporary support of the roadway can be enabled to have protective capability towards one side of the working face, and the rock mass of the working face is prevented from forming safety threat to operators, and the technical scheme comprises the following steps: heading machine, metal net, side net and sealing net. The heading machine comprises an onboard temporary support. The metal mesh is fixed on the upper side of the airborne temporary support, the metal mesh is lifted to the top of the roadway close to the working face by the airborne temporary support, and the metal mesh covers the top of the roadway which is not provided with protection. Two lateral sides of the roadway close to the working face are respectively fixed with a lateral side net, and the two lateral side nets are in butt joint with the metal net. The upper sealing net is a flexible net and is fixedly connected with the onboard temporary support, the upper sealing net is attached to the roadway working surface, and the upper sealing net is in butt joint with the side upper net and the metal net, so that a closed temporary protection space is formed among the upper sealing net, the side upper net and the metal net in the roadway without protection.
Description
Technical Field
The invention belongs to the field of underground safety operation, and relates to an advanced temporary support device and process for a working face of a heading machine.
Background
After the tunneling machine completes a tunneling operation cycle on the tunnel, in order to ensure stable tunnel structure and avoid injury to operators caused by falling and collapsing of surrounding rocks, the tunnel needs to be permanently supported.
In the prior art, after one section of tunnel tunneling is completed each time, a metal net and a side wall net are adopted to set up temporary support in the tunnel, then anchor rods and anchor cables are arranged at the top and the side surface of the tunnel, and permanent support is formed through fixation.
In the operation process, the temporary support of the roadway can not protect the working surface, and the rock surface of the working surface is loose due to the fact that the cutting head works on the working surface, particularly in the permanent support operation, the working surface collapses due to the fact that the working surface is extremely susceptible to vibration, and the rock rushing into the roadway becomes a serious safety influence factor of operators in the space.
Disclosure of Invention
To overcome the above-mentioned drawbacks of the related art, in one aspect, some embodiments of the present invention provide a temporary advance support device for a working face of a heading machine, which is applied to a roadway that is not provided with protection for the heading machine. The temporary support of the roadway can be enabled to have protective capability on one side of the working face, and the rock mass of the working face is prevented from forming safety threat to operators.
The advanced temporary support device for the working face of the heading machine is applied to a roadway which is not provided with protection and is driven by the heading machine. The heading machine working face advanced temporary support device comprises: heading machine, metal net, side net and sealing net. The heading machine comprises an onboard temporary support, and a cutting head of the heading machine is lowered. The metal mesh is fixed on the upper side of the airborne temporary support, the shape of the metal mesh is matched with the shape of the top of the roadway, the metal mesh is lifted by the airborne temporary support to the top of the roadway, which is close to the working surface, and the top of the roadway, which is not provided with protection, is covered by the metal mesh. The two sides of the roadway, which are close to the working surface, are respectively fixed with a side wall net, the two side wall nets are in butt joint with the metal net, and the side wall nets cover the side surface of the roadway, which is not provided with protection. The upper sealing net is a flexible net, the upper sealing net is fixedly connected with the onboard temporary support, the upper sealing net is attached to the roadway working surface, and the upper sealing net is in butt joint with the side upper net and the metal net, so that a closed temporary protection space is formed in the roadway without protection.
Preferably, the heading machine working face advanced temporary support device further comprises a side protection front cantilever. At least one toe guard cantilever is fixed on the side surface of each roadway, the toe guard cantilever is of a rod-shaped structure parallel to the ground, a toe guard net is arranged between the toe guard cantilever and the corresponding side surface of each roadway, and the toe guard net is fixedly connected with the corresponding toe guard cantilever.
Preferably, the heading machine working face advanced temporary support device further comprises a front cantilever fixing piece. The front cantilever fixing piece at least comprises: a fixing rod and a fixing plate. The fixing rods are sequentially arranged from top to bottom, and the fixing rods are vertically fixed on the corresponding side surfaces of the roadway. The fixing plate is provided with a plurality of through holes, each through hole is movably inserted into a corresponding fixing rod, and the space formed by the fixing rod, the fixing plate and the corresponding side face of the roadway is internally provided with the upper protection front cantilever. And the distance between the fixing plate and the corresponding side surface of the roadway is adjusted, so that the toe guard is controlled to be fixedly or movably connected with the corresponding toe guard fixing piece.
Preferably, the advanced temporary support device for the working face of the heading machine further comprises a side sealing belt, wherein the side sealing belt is of an inelastic strip structure, and the side sealing belt is attached to one side, far away from the working face of the roadway, of the side sealing net. One end of the upper sealing belt is fixedly connected with the upper protection front cantilever on one side surface of the roadway, and the other end of the upper sealing belt is fixedly connected with the upper protection front cantilever on the other side surface of the roadway.
Preferably, the heading machine working face advanced temporary support device further comprises a cutting head protection cover, wherein the cutting head protection cover is a shell which is adaptive to the cutting head; the cutting head protection cover is arranged on the ground, the cutting head protection cover covers the cutting head, and the cutting head protection cover is configured to separate the cutting head from personnel in the temporary protection space.
On the other hand, some embodiments of the present invention further provide a heading machine working face advanced temporary support process, which is suitable for the heading machine working face advanced temporary support device.
The advanced temporary support process for the working face of the heading machine comprises the following steps: after the cutting head of the heading machine works on the working surface, the cutting head is lowered, a metal net is arranged on the onboard temporary support of the heading machine, the onboard temporary support of the heading machine is lifted, and the metal net on the onboard temporary support is attached to the top of a roadway which is not paved with protection. Fixing side wall nets on two sides of the roadway, and enabling the side wall nets to cover the sides of the roadway; and the lateral side net is butted with the two sides of the metal net. The upper sealing net is fixed on the onboard temporary support, so that the upper sealing net is attached to the working surface of the roadway, two sides of the upper sealing net are fixedly connected with the corresponding side upper net, and a temporary support space is formed by the metal net, the side upper net and the upper sealing net. And an anchor rope is arranged at the top of the roadway, anchor rods are arranged on the side surfaces of the roadway, and the metal net and the side wall net are fixedly connected with the corresponding anchor rope and anchor rods, so that the metal net and the side wall net form permanent support in the roadway. And separating the metal net from the onboard temporary support, and separating the upper sealing net from the onboard temporary support and the side upper net, so that the tunneling machine performs the next tunneling work.
Preferably, the method for fixing the side wall nets on the two sides of the roadway comprises the following steps: and (5) attaching the side wall net to the corresponding side surface of the roadway. The upper protection front cantilever and the front cantilever fixing piece are movably connected, the upper protection front cantilever is moved towards the direction of the working surface of the roadway and is clung to the working surface, the corresponding side upper net is arranged between the upper protection front cantilever and the side surface of the roadway, and the side upper net and the upper protection front cantilever are fixed. And fixing a front cantilever fixing piece on the same side surface of the roadway at the joint position of the newly installed side wall net and the side wall net adjacent to the newly installed side wall net, and fixedly connecting the side wall protecting front cantilever with the corresponding front cantilever fixing piece.
Preferably, the method for fixing the upper sealing net on the airborne temporary support and attaching the upper sealing net to the working surface of the roadway comprises the following steps: one end of the upper sealing belt is fixedly connected with the upper protection front cantilever on one side of the roadway, the other end of the upper sealing belt is fixedly connected with the upper protection front cantilever on the other side of the roadway, and the upper sealing belt is attached to one side, far away from the working face, of the upper sealing net.
The invention has the beneficial effects that:
According to the invention, the upper sealing net is arranged in front of the metal net and the side upper net, namely, the working surface is covered by the upper sealing net, so that the temporary support can form a closed and high-safety protection space, and the protection device has a very strong protection effect on workers working in the temporary support space.
According to the invention, the side, far away from the working surface, of the upper sealing net is provided with the upper sealing belt, and the upper sealing net can be attached to the working surface under the action of the upper protection front cantilever, so that the collapsed rock on the working surface is pressed onto the working surface by the upper sealing net, and the rock is prevented from falling to the ground and rolling into a temporary protection space.
According to the invention, the side wall of the working face is provided with the side wall protection front cantilever and the front cantilever fixing piece, and the side wall protection front cantilever and the front cantilever fixing piece are fixed with the side wall anchor rod, so that the tensile strength of the side wall net is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a side elevational view of the present invention;
FIG. 3 is a top view of one embodiment of the present invention;
FIG. 4 is an enlarged view of area A of FIG. 3;
FIG. 5 is a top view of another embodiment of the present invention;
FIG. 6 is a block diagram of a front sonde mount of the present invention;
fig. 7 is another construction diagram of a front sonde mount of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the following description of the embodiments accompanied with the accompanying drawings will be given in detail. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the prior art, the tunneller also needs to exit the roadway every time the tunnelling operation cycle is completed, operators lay the anchor net and the anchor cable on the top and the side surface of the roadway, then forward move the front cantilever to realize preliminary fixing of the anchor net and the anchor cable, and then adopt solid wood for reinforcement to complete temporary support in the roadway. And then, anchoring bolts are beaten on the top and the side surfaces of the roadway, so that the anchor net, the anchor cable and the anchor bolts are fixed to form a permanent support.
The operation process is tedious, labor intensity is high, and the working face with high danger coefficient is not protected, so that life safety of operators is greatly threatened.
In view of this, in one aspect, as shown in fig. 1-4, some embodiments of the present invention provide a heading machine face forward temporary support apparatus. The advanced temporary support device for the working face of the heading machine is applied to a roadway which is not provided with a protection and is driven by the heading machine 1. The heading machine working face advanced temporary support device comprises: heading machine 1, metal net 2, side wall net 3 and sealing wall net 4. The heading machine 1 comprises an onboard temporary support 11, and a cutting head of the heading machine 1 is lowered. The metal mesh 2 is fixed on the upper side of the airborne temporary support 11, the shape of the metal mesh 2 is adapted to the shape of the top of the roadway, the metal mesh 2 is lifted by the airborne temporary support 11 to the top of the roadway close to the working surface, and the top of the roadway which is not provided with protection is covered by the metal mesh 2. The two sides of the roadway, which are close to the working surface, are respectively fixed with a side wall net 3, the two side wall nets 3 are in butt joint with the metal net 2, and the side wall nets 3 cover the side surfaces of the roadway, which are not provided with protection. The upper sealing net 4 is a flexible net, the upper sealing net 4 is fixedly connected with the onboard temporary support 11, the upper sealing net 4 is attached to the roadway working surface, and the upper sealing net 4 is in butt joint with the side upper net 3 and the metal net 2, so that a closed temporary protection space is formed in the roadway where protection is not arranged by the side upper net 4, the side upper net 3 and the metal net 2.
In some examples, the metal mesh 2 may be a protection mesh woven by iron wires or steel wires, and the metal mesh 2 is cut according to the shape and the size of the top of the excavated roadway, that is, the metal mesh 2 can completely cover the top of the excavated roadway, so as to avoid the damage to operators caused by roof falling of surrounding rocks at the top. In order to facilitate the lifting of the wire mesh 2 to the top of the roadway, the present application may be operated with a heading machine 1 having an on-board temporary support 11. Namely, the metal net 2 is fixed on the upper end face of the onboard temporary support 11, the metal net 2 is attached to the top of the roadway by controlling the onboard temporary support 11 to be lifted, and the metal net 2 covers the top of the excavated roadway.
The onboard temporary support 11 is arranged at the rear part of a cutting part of the heading machine 1, and the hydraulic cylinder is used for lifting the top support to complete the temporary support of the top of the roadway. The on-board temporary support 11 is a prior art well known to those skilled in the art, and the on-board temporary support 11 will not be described in detail herein.
It should be noted that the upper side of the metal mesh 2 fixed to the onboard temporary support 11 may be the upper end surface fixed to the ceiling support.
The airborne temporary support 11 is adopted to lift the metal net 2, so that the operation is convenient and fast, the safety coefficient is high, and the arrangement of the front cantilever at the top of the roadway can be reduced, so that the labor intensity is further reduced.
The side wall net 3 may be the same protective net as the metal net 2, and the side wall net 3 is cut according to the shape and size of the side surface of the excavated roadway. The lateral wall net 3 is fixed on both sides of the roadway to realize the supporting operation of the sides of the roadway, and the upper edge of the lateral wall net 3 is in butt joint with the edge corresponding to the metal net 2. It can be understood that the butt joint position of the side wall net 3 and the metal net 2 can be fixedly connected or hinged by adopting iron wires or locks and the like, so that the space protection capability of the side wall net 3 and the metal net 2 to the lower part is stable and reliable.
The airborne temporary support 11 may be provided with a sealing net 4, the sealing net 4 is a flexible net, for example, the sealing net 4 may be a nylon net or a net woven by flexible wires, and the mesh diameter should be smaller than that of the metal net 2. The airborne temporary support 11 is in a lifting state, namely, the top protection support is lifted to a position close to the top of the roadway, a plurality of hooks can be arranged at the edge of the top protection support close to the working face, and the upper sealing net 4 can be hung on the top protection support. It will be appreciated that the roof support is as close to the working surface as possible to enable the upper sealing net 4 to conform to the working surface, facilitating the retaining action of the upper sealing net 4 on the rock mass slumped on the working surface. In addition, the two sides of the upper sealing net 4 can be fixedly connected with the side upper net 3, for example, iron wires or lock catches are adopted to fasten the two side edges of the upper sealing net 4 with the side edges of the side upper net 3.
The upper sealing net 4 is convenient to carry and transfer by adopting a flexible net, is favorable for disassembly and installation, and can be repeatedly used.
In some embodiments, the heading machine face forward temporary support device further comprises a toe guard front cantilever 5. The side of each roadway is fixedly provided with at least one toe guard cantilever 5, the toe guard cantilever 5 is of a rod-shaped structure parallel to the ground, a toe guard net 3 is arranged between the toe guard cantilever 5 and the corresponding side of the roadway, and the toe guard net 3 is fixedly connected with the corresponding toe guard cantilever 5.
Illustratively, the toe guard 5 may be a metal straight rod, such as a square steel tube. For example, two or three toe guard beams 5 may be fixed on each side of the roadway, the toe guard beams 5 are fixedly connected with the side of the roadway, the toe guard net 3 is disposed between the toe guard beams 5 and the side of the roadway, and the toe guard net 3 may be fixedly connected with the toe guard beams 5 through steel wires.
In some embodiments, as shown in fig. 3 and 6, the heading machine face forward temporary support apparatus further includes a front canopy fixture 6. The front beam fixing member 6 includes at least: a fixing rod 61 and a fixing plate 62. The fixing rods 61 are sequentially arranged from top to bottom, and the fixing rods 61 are vertically fixed on the corresponding side surfaces of the roadway. The fixing plate 62 is provided with a plurality of through holes, each through hole is movably inserted into a corresponding fixing rod 61, and the space formed by the fixing rod 61, the fixing plate 62 and the corresponding side surface of the roadway is internally provided with the upper protection front cantilever 5. The distance between the fixing plate 62 and the corresponding side surface of the roadway is adjusted, so that the upper protection front cantilever 5 is controlled to be fixedly or movably connected with the corresponding front cantilever fixing piece 6.
Illustratively, the number of the fixing bars 61 may be two and arranged in accordance with the up-down. The fixing rods 61 are inserted into surrounding rocks at the side surfaces of the roadway, the upper protection front cantilever 5 is inserted between the two fixing rods 61, the fixing plate 62 can be a metal straight plate, two through holes are formed in the upper portion of the fixing plate, and the two fixing rods 61 are inserted into the two through holes in a one-to-one correspondence mode.
The fixing rod 61 may be provided with external threads, and the distance between the fixing plates 62 and the side of the roadway may be controlled by screwing the nuts, so as to control the fastening or the loosening of the upper protecting front cantilever 5 by the front cantilever fixing member 6, specifically, when screwing the nuts to make the fixing plates 62 too close to the side of the roadway, the upper protecting front cantilever 5 is fastened by the front cantilever fixing member 6, and when screwing the nuts to make the fixing plates 62 far from the side of the roadway, the upper protecting front cantilever 5 is loosened by the front cantilever fixing member 6.
In other examples, as shown in fig. 4 and 7, the front cantilever fixing member 6 may further include an auxiliary fixing plate 63, where the auxiliary fixing plate 63 is a metal straight plate, a plurality of auxiliary through holes are provided on the auxiliary fixing plate 63, each fixing rod 61 is inserted into the surrounding rock on the side of the roadway after penetrating through the auxiliary through hole, the auxiliary fixing plate 63 is attached to the side of the roadway, a fixing plate 62 is further provided on the fixing rod 61 on the side, far away from the side of the roadway, of the auxiliary fixing plate 63, and the distance between the fixing plate 62 and the auxiliary fixing plate 63 is adjusted to control the fixing or movable connection between the guard front cantilever 5 and the front cantilever fixing member 6.
In some embodiments, the advanced temporary support device for the working face of the heading machine further comprises a sealing belt 7, wherein the sealing belt 7 is of an inelastic strip structure, and the sealing belt 7 is attached to the side, away from the working face of the roadway, of the sealing net 4. One end of the upper sealing belt 7 is fixedly connected with the upper protection front cantilever 5 on one side surface of the roadway, and the other end of the upper sealing belt 7 is fixedly connected with the upper protection front cantilever 5 on the other side surface of the roadway.
Illustratively, one end of the upper sealing belt 7 is provided with a hook which is convenient to connect with the upper protecting front cantilever 5, the other end is provided with a fastening belt tightener 71, and the upper sealing belt 7 is tightened by the fastening belt tightener 71 after the fastening belt tightener 71 is fixed on the other opposite upper protecting front cantilever 5.
It is understood that the two ends of the upper sealing belt 7 are generally fixed at the position of the upper protecting front cantilever 5 10-20 cm away from the working surface, and an upper sealing bracket 8 is arranged at the front end of the upper protecting front cantilever 5 in order to enable the upper sealing belt 7 to be attached to the upper sealing net 4. The upper sealing support 8 can be of a C-shaped structure, and is welded to the front end side surface of the upper protecting front cantilever 5, and the upper sealing belt 7 can penetrate through an annular opening formed by the upper sealing support 8 and the corresponding upper sealing support 8 upper protecting front cantilever 5 side surface, so that the upper sealing belt 7 is ensured to be attached to the upper sealing net 4.
The sealing belt 7 can press the sealing net 4 onto the working surface, and the rock mass falling on the working surface can be blocked by the sealing net 4 to fall, and meanwhile, the sealing belt 7 provides pressure and binding force to prevent the rock mass from sliding off the sealing net 4 and provides protection for the sealing net 4 from being torn by the rock mass.
In some embodiments, the heading machine face forward temporary support device further comprises a cutter head shield, the cutter head shield being a housing compatible with the cutter head; the cutting head protection cover is arranged on the ground, the cutting head protection cover covers the cutting head, and the cutting head protection cover is configured to separate the cutting head from personnel in the temporary protection space.
The cutting head protection cover may be a metal arc plate or a metal arc net, for example.
On the other hand, some embodiments of the present invention further provide a heading machine working face advanced temporary support process, which is suitable for the heading machine working face advanced temporary support device.
The advanced temporary support process for the working face of the heading machine comprises the following steps:
S1, after a cutting head of the heading machine works on a working surface, the cutting head is lowered, a metal net is arranged on an onboard temporary support of the heading machine, the onboard temporary support of the heading machine is lifted, and the metal net on the onboard temporary support is attached to the top of a roadway which is not laid for protection.
S2, fixing side wall nets on two side surfaces of the roadway, and enabling the side wall nets to cover the side surfaces of the roadway; and the lateral side net is butted with the two sides of the metal net.
S3, fixing the upper sealing net on the airborne temporary support, enabling the upper sealing net to be attached to the working surface of the roadway, and enabling two sides of the upper sealing net to be fixedly connected with the corresponding side upper net, so that a temporary support space is formed by the metal net, the side upper net and the upper sealing net.
S4, arranging anchor cables at the top of the roadway, arranging anchor rods at the side surfaces of the roadway, and fixedly connecting the metal net and the side wall net with the corresponding anchor cables and anchor rods, so that the metal net and the side wall net form permanent support in the roadway.
S5, separating the metal net from the onboard temporary support, and separating the upper sealing net from the onboard temporary support and the side upper net, so that the tunneling machine performs the next tunneling work.
In some embodiments, the method for fixing the side wall nets on two sides of the roadway comprises the following steps:
S21, the side wall net is attached to the corresponding side face of the roadway.
S22, the toe guard and the toe guard fixing piece are movably connected, the toe guard is moved towards the direction of the working face of the roadway and is tightly attached to the working face, the corresponding toe guard net is arranged between the toe guard and the side face of the roadway, and the toe guard net and the toe guard are fixed.
S23, fixing a front cantilever fixing piece on the same side surface of the roadway, wherein the side wall net is newly installed on the same side surface of the roadway, the side wall net is adjacent to the side wall net, and the front cantilever protecting piece is fixedly connected with the corresponding front cantilever fixing piece.
In some embodiments, the method of securing the lasting net to the on-board temporary support to conform the lasting net to the working surface of the roadway comprises:
S31, one end of the upper sealing belt is fixedly connected with the upper protection front cantilever on one side of the roadway, the other end of the upper sealing belt is fixedly connected with the upper protection front cantilever on the other side of the roadway, and the upper sealing belt is attached to one side, far away from the working face, of the upper sealing net.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a tunneller working face advance temporary support device, is applied to the tunnel that tunneller that does not set up the protection excavated, its characterized in that, tunneller working face advance temporary support device include:
The development machine comprises an onboard temporary support, and a cutting head of the development machine is lowered;
The metal net is fixed on the upper side surface of the airborne temporary support, the shape of the metal net is matched with the shape of the top of the roadway, the metal net is lifted by the airborne temporary support to the top of the roadway close to the working surface, and the top of the roadway which is not provided with protection is covered by the metal net;
The side wall nets are fixed on two side surfaces of the roadway, which are close to the working surface, and are in butt joint with the metal net, and the side wall nets cover the side surfaces of the roadway, which are not provided with protection;
The upper sealing net is a flexible net and is fixedly connected with the onboard temporary support, the upper sealing net is attached to the roadway working surface, and the upper sealing net is in butt joint with the side upper net and the metal net, so that a closed temporary protection space is formed among the upper sealing net, the side upper net and the metal net in a roadway without protection;
The working face advanced temporary support device of the heading machine further comprises a side protection front cantilever;
At least one toe guard cantilever is fixed on the side surface of each roadway, the toe guard cantilever is of a rod-shaped structure parallel to the ground, a toe guard net is arranged between the toe guard cantilever and the corresponding side surface of each roadway, and the toe guard net is fixedly connected with the corresponding toe guard cantilever;
the heading machine working face advanced temporary support device further comprises a front cantilever fixing piece;
The front cantilever fixing piece at least comprises:
The fixing rods are sequentially arranged from top to bottom, and are vertically fixed on the corresponding side surfaces of the roadway;
The fixing plate is provided with a plurality of through holes, each through hole is movably inserted on a corresponding fixing rod,
The side protection front cantilever is arranged in a space formed by the fixing rod, the fixing plate and the side surface corresponding to the roadway;
The distance between the fixing plate and the corresponding side surface of the roadway is adjusted, so that the side protection front cantilever is controlled to be fixedly or movably connected with the corresponding front cantilever fixing piece;
the advanced temporary support device for the working face of the heading machine further comprises a sealing belt, wherein the sealing belt is of an inelastic strip structure, and the sealing belt is attached to one side, far away from the working face of the roadway, of the sealing net;
One end of the upper sealing belt is fixedly connected with the upper protection front cantilever on one side surface of the roadway, and the other end of the upper sealing belt is fixedly connected with the upper protection front cantilever on the other side surface of the roadway;
the heading machine working face advanced temporary support device further comprises a cutting head protection cover, wherein the cutting head protection cover is a shell which is matched with the cutting head; the cutting head protection cover is arranged on the ground, the cutting head protection cover covers the cutting head, and the cutting head protection cover is configured to separate the cutting head from personnel in the temporary protection space.
2. A heading machine face advanced temporary support process, which is applicable to the heading machine face advanced temporary support device of claim 1, wherein the heading machine face advanced temporary support device comprises: heading machine, metal net, side net and sealing net;
the advanced temporary support process for the working face of the heading machine is characterized by comprising the following steps of:
after the cutting head of the heading machine works on a working surface, the cutting head is lowered, a metal net is arranged on the onboard temporary support of the heading machine, the onboard temporary support of the heading machine is lifted, and the metal net on the onboard temporary support is attached to the top of a roadway which is not paved with protection;
fixing side wall nets on two sides of the roadway, enabling the side wall nets to cover the sides of the roadway, and enabling the side wall nets to be in butt joint with two sides of the metal net;
Fixing the upper sealing net on the onboard temporary support, attaching the upper sealing net to the working surface of the roadway, and fixedly connecting two sides of the upper sealing net with the corresponding side upper net to form a temporary support space by the metal net, the side upper net and the upper sealing net;
An anchor rope is arranged at the top of the roadway, anchor rods are arranged on the side surfaces of the roadway, and the metal net and the side wall net are fixedly connected with the corresponding anchor rope and anchor rods, so that permanent supports are formed in the roadway by the metal net and the side wall net;
and separating the metal net from the onboard temporary support, and separating the upper sealing net from the onboard temporary support and the side upper net, so that the tunneling machine performs the next tunneling work.
3. The advance temporary support process for a heading machine face as recited in claim 2, wherein the advance temporary support device for a heading machine face further comprises: front cantilever fixing pieces and side protection front cantilever;
the method for fixing the side wall nets on the two sides of the roadway comprises the following steps:
The side wall net is attached to the corresponding side face of the roadway;
The side protection front cantilever and the front cantilever fixing piece are movably connected, the side protection front cantilever is moved towards the direction of the working surface of the roadway and is clung to the working surface, the corresponding side wall net is arranged between the side protection front cantilever and the side surface of the roadway, and the side wall net and the side protection front cantilever are fixed;
And fixing a front cantilever fixing piece on the same side surface of the roadway at the joint position of the newly installed side wall net and the side wall net adjacent to the newly installed side wall net, and fixedly connecting the side wall protecting front cantilever with the corresponding front cantilever fixing piece.
4. A heading machine face forward temporary support process as recited in claim 3, wherein said heading machine face forward temporary support apparatus further comprises a sealing belt;
The method for fixing the upper sealing net on the airborne temporary support and enabling the upper sealing net to be attached to the working face of the roadway comprises the following steps:
One end of the upper sealing belt is fixedly connected with the upper protection front cantilever on one side of the roadway, the other end of the upper sealing belt is fixedly connected with the upper protection front cantilever on the other side of the roadway, and the upper sealing belt is attached to one side, far away from the working face, of the upper sealing net.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028124A1 (en) * | 1979-10-26 | 1981-05-06 | Ipi Contractors Ag | Method of mining |
| CN101251022A (en) * | 2008-03-26 | 2008-08-27 | 曹树祥 | Immediate support device for digging machine |
| CN101403302A (en) * | 2007-10-01 | 2009-04-08 | 闫振东 | Pedrail type liftable anchor bar anchor cable construction drill rig and double-lane fast digging technique |
| CN102220874A (en) * | 2011-05-12 | 2011-10-19 | 常州科研试制中心有限公司 | Machine-mounted tunneling working surface head-on temporary support device |
| CN102606152A (en) * | 2012-04-06 | 2012-07-25 | 中铁隧道装备制造有限公司 | Novel quick digging and anchoring integrated machine for rectangular coal roadway |
| CN103174448A (en) * | 2013-04-15 | 2013-06-26 | 辽宁天安矿山科技有限公司 | In-time supporting method for roadway fully-mechanized excavating operation |
| CN104278999A (en) * | 2014-09-18 | 2015-01-14 | 中国煤炭科工集团太原研究院有限公司 | Automatic bolt mesh laying step type temporary support for fully mechanized excavation faces |
| CN104453952A (en) * | 2014-12-03 | 2015-03-25 | 中国长江三峡集团公司 | Soft rock tunnel steel support pre-support device and using method thereof |
| CN205654366U (en) * | 2015-12-30 | 2016-10-19 | 神华集团有限责任公司 | It carries temporary support device to combine machine of digging |
| CN109281687A (en) * | 2018-10-23 | 2019-01-29 | 河南理工大学 | A method of about the quick tuning construction of coal mine development machine |
| CN211397565U (en) * | 2019-12-24 | 2020-09-01 | 内蒙古工业大学 | Development machine suitable for narrow tunnel mining of ultra-thin coal seam |
| CN217327382U (en) * | 2022-03-31 | 2022-08-30 | 国家能源集团新疆能源有限责任公司 | Integrated excavation working face head-on rib-splitting prevention temporary support system |
| CN116677407A (en) * | 2023-06-29 | 2023-09-01 | 陕西陕煤韩城矿业有限公司 | Method for maintaining roadway with roof separation layer and soft coal body |
-
2024
- 2024-03-11 CN CN202410274776.6A patent/CN117868926B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028124A1 (en) * | 1979-10-26 | 1981-05-06 | Ipi Contractors Ag | Method of mining |
| CN101403302A (en) * | 2007-10-01 | 2009-04-08 | 闫振东 | Pedrail type liftable anchor bar anchor cable construction drill rig and double-lane fast digging technique |
| CN101251022A (en) * | 2008-03-26 | 2008-08-27 | 曹树祥 | Immediate support device for digging machine |
| CN102220874A (en) * | 2011-05-12 | 2011-10-19 | 常州科研试制中心有限公司 | Machine-mounted tunneling working surface head-on temporary support device |
| CN102606152A (en) * | 2012-04-06 | 2012-07-25 | 中铁隧道装备制造有限公司 | Novel quick digging and anchoring integrated machine for rectangular coal roadway |
| CN103174448A (en) * | 2013-04-15 | 2013-06-26 | 辽宁天安矿山科技有限公司 | In-time supporting method for roadway fully-mechanized excavating operation |
| CN104278999A (en) * | 2014-09-18 | 2015-01-14 | 中国煤炭科工集团太原研究院有限公司 | Automatic bolt mesh laying step type temporary support for fully mechanized excavation faces |
| CN104453952A (en) * | 2014-12-03 | 2015-03-25 | 中国长江三峡集团公司 | Soft rock tunnel steel support pre-support device and using method thereof |
| CN205654366U (en) * | 2015-12-30 | 2016-10-19 | 神华集团有限责任公司 | It carries temporary support device to combine machine of digging |
| CN109281687A (en) * | 2018-10-23 | 2019-01-29 | 河南理工大学 | A method of about the quick tuning construction of coal mine development machine |
| CN211397565U (en) * | 2019-12-24 | 2020-09-01 | 内蒙古工业大学 | Development machine suitable for narrow tunnel mining of ultra-thin coal seam |
| CN217327382U (en) * | 2022-03-31 | 2022-08-30 | 国家能源集团新疆能源有限责任公司 | Integrated excavation working face head-on rib-splitting prevention temporary support system |
| CN116677407A (en) * | 2023-06-29 | 2023-09-01 | 陕西陕煤韩城矿业有限公司 | Method for maintaining roadway with roof separation layer and soft coal body |
Non-Patent Citations (1)
| Title |
|---|
| 机械化临时支护装置在综掘巷道中应用;徐锁庚;;能源技术与管理;20080428(第02期);全文 * |
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