CN113236291A - Construction method for building and reinforcing coal mine tunnel - Google Patents
Construction method for building and reinforcing coal mine tunnel Download PDFInfo
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- CN113236291A CN113236291A CN202110691807.4A CN202110691807A CN113236291A CN 113236291 A CN113236291 A CN 113236291A CN 202110691807 A CN202110691807 A CN 202110691807A CN 113236291 A CN113236291 A CN 113236291A
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- 238000010276 construction Methods 0.000 title claims abstract description 60
- 239000003245 coal Substances 0.000 title claims abstract description 41
- 230000003014 reinforcing effect Effects 0.000 title claims description 21
- 230000002787 reinforcement Effects 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000008093 supporting effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000011090 solid board Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/157—Laggings making use of fluid cushions, e.g. the fluid containing a hardenable material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/183—Supporting means for arch members, not provided for in E21D11/22
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/30—Bases for lower arch members
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a coal mine tunnel construction and reinforcement construction method, which uses a coal mine tunnel construction and reinforcement construction device, wherein the coal mine tunnel construction and reinforcement construction device comprises a lower fixing mechanism and a top bracing mechanism, the lower fixing mechanism is arranged in a tunnel, and the top bracing mechanism is arranged at the upper end of the lower fixing mechanism.
Description
Technical Field
The invention relates to the field of coal mine roadway support, in particular to a construction method for building and reinforcing a coal mine roadway.
Background
For coal mining, a series of tunnels reaching the coal body and excavated in the coal seam are excavated from the ground to the underground, which are collectively called mine tunnels (coal mine tunnels), and the coal mine tunnels can be divided into three categories, namely vertical tunnels, horizontal tunnels and inclined tunnels according to different inclination angles, and can be divided into three categories, namely development tunnels, preparation tunnels and stoping tunnels according to the purposes and service ranges of the tunnels.
The traditional roadway arrangement mode is that roadways with longer service time such as a large roadway, a mining area preparation roadway and the like are arranged in rocks, along with the development and the improvement of the roadway support technology, a rock roof coal roadway develops to a coal seam roof roadway and a full coal roadway, the support strength of the roadway is also enhanced, the roadway support is adopted to keep the roadway unblocked and surrounding rocks stable, and the roadway support has important significance for coal mine construction and production, common support materials comprise wood, steel, stone, concrete, reinforced concrete, anchor spraying concrete and the like, the basic purpose of supporting the roadway is to relax and reduce the movement of the surrounding rocks, so that the section of the roadway is not excessively reduced, meanwhile, the surrounding rocks which are scattered and damaged are prevented from falling off, but the following problems can occur in the roadway support process:
1. the adopted supporting structure is mostly integral, the integral supporting structure is inconvenient to transport in a roadway, and the integral stress uniformity of the supporting structure is low when the supporting structure plays a supporting role, so that the supporting effect of the roadway can be influenced;
2. the supporting range of the roadway by adopting a single type or simple supporting structure is narrow, so that the supporting effect of the whole roadway is poor, and the adaptability of the supporting structure to the height and size change of the roadway is low.
Disclosure of Invention
Technical scheme (I)
In order to achieve the purpose, the invention adopts the following technical scheme that a coal mine tunnel construction and reinforcement construction method uses a coal mine tunnel construction and reinforcement construction device, the coal mine tunnel construction and reinforcement construction device comprises a lower fixing mechanism and a top bracing mechanism, and the concrete construction method when the coal mine tunnel construction and reinforcement construction device is used for carrying out the coal mine tunnel construction and reinforcement construction is as follows:
s1, reinforcing the lower part of the roadway: the device is integrally placed in a roadway in a manual mode and sequentially placed along the length dimension of the roadway, then the position of the bottom plate is adjusted in a manual mode until the outer side end face of the hollow plate is attached to the vertical inner wall of the roadway, then a first anchor rod is inserted into a first through hole in a manual mode, and then the lower end of the first anchor rod is driven into the inner bottom wall of the roadway through a hammering tool, so that the bottom plate is fixed to the inner bottom wall of the roadway, and then the reinforcement treatment of the lower end of the roadway is completed;
s2, reinforcing the top of the roadway: the built-in plate is pushed upwards through the first electric push rod, the built-in plate drives the arc plate to move synchronously until the arc plate is tightly attached to the inner top wall of the roadway, then the push plate is pushed upwards through the second electric push rod until the push plate tightly abuts against the concave end face of the arc plate, and then top reinforcement of the roadway is completed;
s3, butt joint reinforcement: the telescopic connecting plates are properly contracted or elongated in a manual mode so that the side ends of the telescopic connecting plates are inserted into the first groove, then the fixed telescopic connecting plates and the extending plates are connected through the connecting anchor rods, the connecting anchor rods are hammered through a hammering tool until the connecting anchor rods are inserted into the top of a roadway, and at the moment, the arc plates are in butt joint and fixed.
The lower fixing mechanism is arranged inside the roadway, and a top support mechanism is arranged at the upper end of the lower fixing mechanism.
The lower fixing mechanism comprises a bottom plate, a first anchor rod, a hollow plate, a first electric push rod, an internal plate, a second electric push rod and a push plate, the bottom plate is symmetrically placed on the inner bottom wall of a roadway in a bilateral mode, a first through hole is symmetrically formed in the front and back of the inner side end of the bottom plate, the first anchor rod is connected in the first through hole in a sliding mode, the hollow plate is installed on the upper end face of the outer end face of the bottom plate, the first electric push rod is symmetrically installed on the front and back of the inner bottom wall of the hollow plate, the internal plate is installed in the hollow plate in a sliding mode, the lower end face of the internal plate is connected with the upper end face of the first electric push rod, the second electric push rod is installed on the upper end face of the inner side end of the bottom plate, the first anchor rod is located between the second electric push rod and the hollow plate, the upper end of the second electric push rod inclines towards the hollow plate, the push plate is arranged at the upper end of the second electric push rod, the device is integrally placed in the roadway in a manual mode and is sequentially placed along the length size of the roadway, then adjust the position of bottom plate through the manual mode until the outside terminal surface of hollow slab pastes in the vertical inner wall in tunnel, insert a stock through the manual mode afterwards in the through-hole, the diapire in the tunnel is squeezed into through the lower extreme of beating the instrument with an stock next to this is fixed in the bottom wall in tunnel with the bottom plate, accomplishes the reinforcement processing to the tunnel lower extreme this moment.
The jacking mechanism comprises an arc plate, an extension plate, a telescopic connecting plate and a connecting anchor rod, wherein the arc plate is arranged at the upper end of the built-in plate, the arc plate is connected with the upper end surface of the push plate towards the inner concave surface of the second electric push rod in a sliding way, the extension plate is arranged at the lower end of the inner side end surface of the arc plate, one end of the extension plate, which is away from the arc plate, is provided with one groove, the telescopic connecting plate is connected between the one groove and the other groove in a sliding fit way, the connecting anchor rods are arranged between the side end of the telescopic connecting plate and the side end of the extension plate in a threaded fit way and are symmetrically arranged front and back, the connecting anchor rods penetrate through the one groove, after the bottom plate is fixed on the inner bottom wall of the roadway, the built-in plate is pushed upwards through the one electric push rod, the built-in plate drives the arc plate to move synchronously until the arc plate is tightly attached to the inner top wall of the roadway, and then the push plate is pushed upwards through the second electric push rod, until the push pedal tightly supports in the indent terminal surface of circular arc board, accomplish the top in tunnel and consolidate this moment, later through proper shrink of manual mode or stretch flexible even board so that its side insert the recess No. one, connect fixed flexible even board and extension board through connecting the stock next to beat the connection stock through the instrument of beating until its top that inserts the tunnel, obtain butt joint fixed between the circular arc board this moment.
As a preferred technical scheme of the invention, the front and the back of the upper end surface of the built-in plate are symmetrically provided with a first ear plate, the upper end of the first ear plate is rotationally connected with the lower end of the circular arc plate through a pin shaft, the front and the back of the lower end surface of the push plate are symmetrically provided with a second ear plate, the lower end of the second ear plate is connected with the upper end of a second electric push rod through a pin shaft, the inner side end of the extension plate is rotationally provided with a pin shaft, the front and the back ends of the pin shaft connected with the extension plate are connected with the inner side end surface of the circular arc plate through a third ear plate, the built-in plate is pushed upwards through the first electric push rod, the circular arc plate synchronously moves along with the extension plate, meanwhile, the push plate is pushed upwards through the cooperation of the first electric push rod, the circular arc plate rotates under the pushing of the push plate, so that the contact area between the circular arc plate and the top of the roadway is kept in the maximum state, and the top reinforcing effect of the circular arc plate on the roadway is further improved, the rotatability of the extension plate can facilitate the extension plate to be always horizontally connected with the connecting plate.
As a preferred technical scheme of the invention, a one-number through groove is formed in the front end face of the hollow plate, an indicating plate is installed at the lower end of the front end face of the built-in plate, the indicating plate is in sliding connection with the one-number through groove, a dimension line is carved on the front end face of the hollow plate on the inner side of the indicating plate, the indicating plate can synchronously move along with the built-in plate, and the cooperation between the indicating plate and the dimension line can facilitate workers to quickly judge whether the total height between the built-in plate and the hollow plate changes or not, so that the tightness between the arc plate and the roadway inner top wall can be checked in time.
As a preferred technical scheme of the invention, the inner side of the indicating plate is symmetrically provided with vertical plates in front and back, the vertical plates are mounted on the side end face of the hollow plate facing to the second electric push rod, the side end face of the vertical plate facing away from the second electric push rod is connected with the fixed plate through the spring rods, the spring rods are symmetrically arranged in up and down directions, when the hollow plate is tightly attached to the vertical inner wall of the roadway, the spring rods are in a contraction state, the spring rods in the contraction state give a certain resisting force to the fixed plate, so that the fixed plate is tightly attached to the vertical inner wall of the roadway, and in general, the vertical plates, the spring rods and the fixed plate are matched to assist in reinforcing the lower end of the roadway, thereby being beneficial to improving the overall reinforcing effect of the roadway.
As a preferred technical scheme of the invention, the first spring group is symmetrically arranged on the left and right of the upper end surface of the middle part of the telescopic connecting plate, the top plate is connected between the upper ends of the first spring group, the first spring group is in a contraction state after the arc plate is tightly attached to the inner top wall of the roadway, the top plate is tightly attached to the inner top wall of the roadway under the abutting action of the first spring group, and the first spring group is matched with the top plate to assist in improving the clamping effect of the top of the roadway.
According to a preferable technical scheme, the rear end face of the arc plate is provided with the metal net, the meshes of the metal net are connected with the second anchor rods in a sliding fit mode, the second anchor rods are arranged in a front-to-back equidistant mode, the upper ends of the second anchor rods are driven into the top of the roadway through a hammering tool, so that the metal net is tightly covered on the inner top wall of the roadway, the metal net can play a role in assisting and reinforcing the top of the roadway and can block falling objects on the top of the roadway, and therefore the falling objects are prevented from threatening the safety of workers.
As a preferred technical scheme of the invention, an elastic steel plate is arranged right below the metal net, the lower end of the second anchor rod is fixedly connected with the elastic steel plate, an air bag is arranged between the elastic steel plate and the metal net, the air bag is not contacted with the second anchor rod, after the upper end of the second anchor rod is driven into the top of the roadway, the air bag is just clamped between the elastic steel plate and the metal net, the air bag can play a role in buffering and damping, and meanwhile, the tightness between the metal net and the inner top wall of the roadway can be improved.
As a preferred technical scheme of the invention, a rubber layer is arranged above the push plate and is arranged on the convex surface of the arc plate, and the rubber layer can increase the friction force between the arc plate and the inner top wall of the roadway, thereby being beneficial to improving the connection tightness between the arc plate and the inner top wall of the roadway.
As a preferred technical scheme of the invention, the lower end face of the bottom plate is provided with the inserted nails distributed in a matrix manner, the inserted nails are not in contact with the first anchor rod, and the inserted nails can assist in improving the connection firmness between the bottom plate and the bottom wall in the roadway, so that the improvement of the overall stability of the device is facilitated.
(II) advantageous effects
1. According to the coal mine roadway construction and reinforcement construction method, the coal mine roadway construction and reinforcement construction is carried out by adopting a multiple reinforcement design concept, the device adopts a combined connection mode, the mode can enable the whole device to be conveniently transported and installed in the roadway, the arranged lower fixing mechanism and the top bracing mechanism are matched to carry out comprehensive reinforcement treatment on the roadway, the total height of the lower fixing mechanism and the top bracing mechanism can be adaptively adjusted according to the height size of the roadway, meanwhile, the lower fixing mechanism can be beneficial to the top bracing mechanism to keep a stress balance state, and further the whole reinforcement effect of the roadway is improved;
2. the metal net can play a role in assisting and reinforcing the top of the roadway, and can block falling objects at the top of the roadway so as to prevent the falling objects from threatening the safety of workers, the air bag can play a role in buffering and damping, and the tightness between the metal net and the inner top wall of the roadway can be improved;
3. the cooperation between the indicating plate and the size line can facilitate workers to quickly judge whether the total height between the built-in plate and the hollow plate changes or not, so that the tightness between the arc plate and the roadway inner top wall is checked in time;
4. the vertical plates, the spring rods and the fixing plates are matched with each other to assist in reinforcing the lower end of the roadway, so that the overall reinforcing effect of the roadway is improved, and the first spring group is matched with the top plate to assist in improving the clamping effect of the top of the roadway.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a first cross-sectional view of the present invention;
FIG. 4 is a partial front view of the present invention;
FIG. 5 is a second cross-sectional view of the present invention;
FIG. 6 is a third cross-sectional view of the present invention;
FIG. 7 is a fourth cross-sectional view of the present invention;
fig. 8 is a perspective view of a portion of the structure of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 8, a coal mine tunnel construction and reinforcement construction method uses a coal mine tunnel construction and reinforcement construction device, the coal mine tunnel construction and reinforcement construction device includes a lower fixing mechanism 1 and a top bracing mechanism 2, and the concrete construction method when the coal mine tunnel construction and reinforcement construction device is used for coal mine tunnel construction and reinforcement construction is as follows:
s1, reinforcing the lower part of the roadway: the device is integrally placed in a roadway in a manual mode and sequentially placed along the length dimension of the roadway, then the position of the bottom plate 10 is adjusted in a manual mode until the outer side end face of the hollow plate 12 is attached to the vertical inner wall of the roadway, then the first anchor rod 11 is inserted into the first through hole in a manual mode, and then the lower end of the first anchor rod 11 is driven into the inner bottom wall of the roadway through a hammering tool, so that the bottom plate 10 is fixed to the inner bottom wall of the roadway, and then the reinforcing treatment of the lower end of the roadway is completed;
s2, reinforcing the top of the roadway: the built-in plate 14 is pushed upwards through the first electric push rod 13, the built-in plate 14 drives the arc plate 20 to move synchronously until the arc plate 20 is tightly attached to the inner top wall of the roadway, then the push plate 16 is pushed upwards through the second electric push rod 15 until the push plate 16 is tightly abutted to the concave end face of the arc plate 20, and at the moment, the top reinforcement of the roadway is completed;
s3, butt joint reinforcement: the telescopic connecting plate 22 is contracted or elongated properly by a manual mode so that the side end of the telescopic connecting plate is inserted into the first groove, then the telescopic connecting plate 22 and the extension plate 21 are connected and fixed through the connecting anchor rod 23, the connecting anchor rod 23 is hammered through a hammering tool until the connecting anchor rod 23 is inserted into the top of the roadway, and at the moment, the arc plates 20 are butted and fixed.
The lower fixing mechanism 1 is arranged inside the roadway, and the upper end of the lower fixing mechanism 1 is provided with a top support mechanism 2.
The lower fixing mechanism 1 comprises a bottom plate 10, a first anchor rod 11, a hollow plate 12, a first electric push rod 13, an internal plate 14, a second electric push rod 15 and a push plate 16, the bottom plate 10 is symmetrically placed on the inner bottom wall of a roadway in a bilateral mode, a first through hole is symmetrically formed in the front and back of the inner side end of the bottom plate 10, the first anchor rod 11 is connected in the first through hole in a sliding mode, the hollow plate 12 is installed on the upper end face of the outer side end face of the bottom plate 10, the first electric push rod 13 is symmetrically installed in the front and back of the inner bottom wall of the hollow plate 12, the internal plate 14 is slidably installed inside the hollow plate 12, the lower end face of the internal plate 14 is connected with the upper end face of the first electric push rod 13, the second electric push rod 15 is installed on the upper end face of the inner side end of the bottom plate 10, the first anchor rod 11 is located between the second electric push rod 15 and the hollow plate 12, the upper end of the second electric push rod 15 inclines towards the hollow plate 12, the push plate 16 is arranged on the upper end of the second electric push rod 15, arrange the device wholly in the tunnel through the manual mode to make it place in proper order along the length and size in tunnel, then adjust the position of bottom plate 10 through the manual mode and paste in the vertical inner wall in tunnel until the outside terminal surface of hollow slab 12, insert an stock 11 through the manual mode in the through-hole afterwards, the diapire in the tunnel is squeezed into to the lower extreme of an stock 11 through beating the instrument immediately, with this be fixed in the interior diapire in tunnel with bottom plate 10, accomplish this moment and handle the reinforcement of tunnel lower extreme.
The front and back of the upper end face of the built-in plate 14 are symmetrically provided with a first ear plate 140, the upper end of the first ear plate 140 is rotatably connected with the lower end of the circular arc plate 20 through a pin shaft, the front and back of the lower end face of the push plate 16 are symmetrically provided with a second ear plate 142, the lower end of the second ear plate 142 is connected with the upper end of the second electric push rod 15 through a pin shaft, the inner side end of the extension plate 21 is rotatably provided with a pin shaft, the front and back ends of the pin shaft connected with the extension plate 21 are connected with the inner side end face of the circular arc plate 20 through a third ear plate 143, the built-in plate 14 is upwards pushed through the first electric push rod 13, the circular arc plate 20 synchronously moves therewith, the push plate 16 is upwards pushed through the cooperation of the first electric push rod 13, the circular arc plate 20 rotates under the pushing of the push plate 16, so that the contact area between the circular arc plate 20 and the top of the roadway is kept in the maximum circular arc state, thereby being beneficial to improving the top reinforcing effect of the roadway by the circular arc plate 20, the rotatability of the extension plate 21 may facilitate its own horizontal connection with the connection plate at all times.
The inboard front and back symmetry of indicator panel 120 be provided with riser 121, riser 121 is installed in hollow plate 12 towards the side end face of No. two electric putter 15, the side end face of riser 121 back to No. two electric putter 15 is connected with solid board 123 through spring beam 122, spring beam 122 longitudinal symmetry arranges, after hollow plate 12 hugs closely in the vertical inner wall in tunnel, spring beam 122 at this moment is in the shrink state, the spring beam 122 of shrink state gives solid board 123 certain power of supporting, and make solid board 123 hug closely in the vertical inner wall in tunnel, to sum up, riser 121, the cooperation can assist the reinforcement of tunnel lower extreme between spring beam 122 and the solid board 123, and then do benefit to and improve the whole reinforced effect in tunnel.
The jacking mechanism 2 comprises an arc plate 20, an extension plate 21, a telescopic connecting plate 22 and a connecting anchor rod 23, the arc plate 20 is arranged at the upper end of the built-in plate 14, the arc plate 20 is connected with the upper end surface of the push plate 16 towards the inner concave surface of the second electric push rod 15 in a sliding manner, the extension plate 21 is arranged at the lower end of the inner side end surface of the arc plate 20, one end of the extension plate 21, which is away from the arc plate 20, is provided with a first groove, the telescopic connecting plate 22 is connected between the first grooves in a sliding fit manner, the connecting anchor rods 23 are arranged between the side ends of the telescopic connecting plate 22 and the extension plate 21 in a threaded fit manner, the connecting anchor rods 23 are symmetrically arranged front and back, the connecting anchor rods 23 penetrate through the first grooves, after the bottom plate 10 is fixed on the inner bottom wall of the roadway, the built-in plate 14 is upwards pushed through the first electric push rod 13, the built-in plate 14 drives the arc plate 20 to synchronously move until the arc plate 20 is tightly attached to the inner top wall of the roadway, then the push plate 16 is pushed upwards by the second electric push rod 15 until the push plate 16 is tightly abutted against the concave end face of the circular arc plate 20, at this time, the top reinforcement of the roadway is completed, then the telescopic connecting plate 22 is appropriately contracted or elongated by a manual mode so that the side end of the telescopic connecting plate 22 is inserted into the first groove, then the telescopic connecting plate 22 and the extension plate 21 are fixedly connected by the connecting anchor rod 23, the connecting anchor rod 23 is hammered by a hammering tool until the connecting anchor rod 23 is inserted into the top of the roadway, at this time, the circular arc plates 20 are fixedly butted, which is beneficial to improving the reinforcement effect of the circular arc plates 20 on the top of the roadway, the connection tightness between the circular arc plates 20 and the top wall of the roadway can be improved by the matching between the second electric push rod 15 and the push plate 16 which are obliquely arranged, simultaneously, the circular arc plates 20 can be in a state of stress balance, and the lower fixing mechanism 1 and the top supporting mechanism 2 can be matched to carry out comprehensive reinforcement treatment on the roadway, and the total heights of the two can be adaptively adjusted according to the height size of the roadway.
The up end bilateral symmetry in the middle part of flexible even board 22 install a spring assembly 220, be connected with roof 221 between the upper end of a spring assembly 220, arc plate 20 hugs closely behind the interior roof in tunnel, a spring assembly 220 is the contraction status, roof 221 is hugged closely in the interior roof in tunnel under the support of a spring assembly 220, a cooperation and then supplementary clamping effect that improves the tunnel top between spring assembly 220 and the roof 221.
The rear end face of circular arc board 20 install metal mesh 200, be connected with No. two stocks 201 through sliding fit mode in the mesh of metal mesh 200, No. two stocks 201 are arranged backward equidistance in the past, the top in tunnel is squeezed into through the upper end of beating the instrument with No. two stocks 201, with this make metal mesh 200 tightly cover the interior roof in tunnel, metal mesh 200 both can play supplementary reinforced (rfd) effect to the tunnel top, the while can block the junk at separation tunnel top again, with this avoid the junk to threaten staff's safety.
The rubber layer is arranged above the push plate 16 and is arranged on the outer convex surface of the arc plate 20, and the rubber layer can increase the friction force between the arc plate 20 and the inner top wall of the roadway, so that the tightness of connection between the arc plate 20 and the inner top wall of the roadway can be improved.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The construction method for building and reinforcing the coal mine tunnel uses a construction device for building and reinforcing the coal mine tunnel, and the construction device for building and reinforcing the coal mine tunnel comprises a lower fixing mechanism (1) and a top bracing mechanism (2), and is characterized in that: the concrete construction method for carrying out the coal mine tunnel construction and reinforcement construction by adopting the coal mine tunnel construction and reinforcement construction device is as follows:
s1, reinforcing the lower part of the roadway: the lower fixing mechanism (1) is manually placed in the roadway, and the lower end of the roadway is reinforced through the lower fixing mechanism (1);
s2, reinforcing the top of the roadway: the top of the roadway is reinforced by matching the lower fixing mechanism (1) and the top bracing mechanism (2);
s3, butt joint reinforcement: on the basis of S2, the internal part of the top bracing mechanism (2) is butted and reinforced;
the lower fixing mechanism (1) is arranged in the roadway, and the upper end of the lower fixing mechanism (1) is provided with a top bracing mechanism (2);
the lower fixing mechanism (1) comprises a bottom plate (10), a first anchor rod (11), a hollow plate (12), a first electric push rod (13), a built-in plate (14), a second electric push rod (15) and a push plate (16), wherein the bottom plate (10) is symmetrically placed on the inner bottom wall of a roadway in a left-right mode, a first through hole is symmetrically formed in the front and back of the inner side end of the bottom plate (10), the first anchor rod (11) is connected in the first through hole in a sliding mode, the hollow plate (12) is installed on the upper end face of the outer side end face of the bottom plate (10), the first electric push rod (13) is symmetrically installed on the front and back of the inner bottom wall of the hollow plate (12), the built-in plate (14) is installed in the hollow plate (12) in a sliding mode, the lower end face of the built-in plate (14) is connected with the upper end face of the first electric push rod (13), the second electric push rod (15) is installed on the upper end face of the inner side end face of the bottom plate (10), and the first anchor rod (11) is located between the second electric push rod (15) and the hollow plate (12), the upper end of the second electric push rod (15) inclines towards the hollow plate (12), and the upper end of the second electric push rod (15) is provided with a push plate (16);
jacking mechanism (2) include circular arc board (20), extend board (21), flexible even board (22) and connection stock (23), the upper end of built-in board (14) is provided with circular arc board (20), sliding connection between circular arc board (20) towards the concave surface of No. two electric putter (15) and the up end of push pedal (16), the lower extreme of the medial surface of circular arc board (20) is provided with extends board (21), a recess has been seted up to the one end that extends board (21) and circular arc board (20) leave mutually, be connected with flexible even board (22) through sliding fit between the recess, install connection stock (23) through screw-thread fit between the side of flexible even board (22) and the side of extending board (21), connect stock (23) front and back symmetry and arrange, and connect stock (23) and run through a recess.
2. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: the up end of built-in board (14) before the back symmetry install otic placode (140), rotate through the lower extreme of round pin axle with circular arc board (20) between the upper end of otic placode (140) and be connected, the lower extreme of push pedal (16) before the back symmetry install No. two otic placodes (142), link to each other between the lower extreme of No. two otic placodes (142) through the upper end of round pin axle with No. two electric putter (15), the medial extremity of extension board (21) rotate and install the round pin axle, all link to each other through No. three otic placode (143) between the medial surface of extension board (21) round pin axle around both ends and circular arc board (20).
3. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: a through groove is formed in the front end face of the hollow plate (12), an indicating plate (120) is installed at the lower end of the front end face of the built-in plate (14), the indicating plate (120) is connected with the through groove in a sliding mode, and a size line is carved on the front end face of the hollow plate (12) on the inner side of the indicating plate (120).
4. The coal mine roadway construction and reinforcement construction method according to claim 3, characterized in that: the indicating plate is characterized in that vertical plates (121) are symmetrically arranged on the front side and the rear side of the inner side of the indicating plate (120), the vertical plates (121) are mounted on the side end face, facing the second electric push rod (15), of the hollow plate (12), the side end face, facing away from the second electric push rod (15), of each vertical plate (121) is connected with a fixing plate (123) through a spring rod (122), and the spring rods (122) are symmetrically arranged up and down.
5. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: the upper end face of the middle part of the telescopic connecting plate (22) is provided with a first spring group (220) in bilateral symmetry, and a top plate (221) is connected between the upper ends of the first spring group (220).
6. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: the rear end face of circular arc board (20) install metal mesh (200), be connected with No. two stock (201) through sliding fit mode in the mesh of metal mesh (200), No. two stock (201) equidistance are arranged backward from the past.
7. The coal mine roadway construction and reinforcement construction method according to claim 6, characterized in that: an elastic steel plate (202) is arranged right below the metal net (200), the lower end of the second anchor rod (201) is fixedly connected with the elastic steel plate (202), an air bag (203) is arranged between the elastic steel plate (202) and the metal net (200), and the air bag (203) is not in contact with the second anchor rod (201).
8. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: a rubber layer is arranged above the push plate (16) and is arranged on the outer convex surface of the circular arc plate (20).
9. The coal mine roadway construction and reinforcement construction method according to claim 1, characterized in that: the lower terminal surface of bottom plate (10) install and be the plug pin (100) of matrix distribution, contactless between plug pin (100) and an stock (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691807.4A CN113236291A (en) | 2021-06-22 | 2021-06-22 | Construction method for building and reinforcing coal mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691807.4A CN113236291A (en) | 2021-06-22 | 2021-06-22 | Construction method for building and reinforcing coal mine tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN113236291A true CN113236291A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110691807.4A Withdrawn CN113236291A (en) | 2021-06-22 | 2021-06-22 | Construction method for building and reinforcing coal mine tunnel |
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| CN (1) | CN113236291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278346A (en) * | 2021-12-24 | 2022-04-05 | 安徽省皖北煤电集团有限责任公司 | Coal mine tunnel stable supporting structure with safety protection function |
-
2021
- 2021-06-22 CN CN202110691807.4A patent/CN113236291A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278346A (en) * | 2021-12-24 | 2022-04-05 | 安徽省皖北煤电集团有限责任公司 | Coal mine tunnel stable supporting structure with safety protection function |
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