CN114577082B - Safety covering system and method for buffering blasting impact of foundation pit - Google Patents
Safety covering system and method for buffering blasting impact of foundation pit Download PDFInfo
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- CN114577082B CN114577082B CN202210192611.5A CN202210192611A CN114577082B CN 114577082 B CN114577082 B CN 114577082B CN 202210192611 A CN202210192611 A CN 202210192611A CN 114577082 B CN114577082 B CN 114577082B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
- F42D5/05—Blasting mats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/055—Silencing means for blasting operations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vibration Dampers (AREA)
Abstract
The application relates to a safety covering system and a covering method for buffering blasting impact of a foundation pit, which belong to the technical field of building blasting, wherein the safety covering system comprises a first explosion-proof steel plate and a second explosion-proof steel plate which are covered on a blasting hole and are distributed in parallel, a buffer mechanism is arranged between the first explosion-proof steel plate and the second explosion-proof steel plate, and buffer rubber is arranged on the second explosion-proof steel plate; the first explosion-proof steel plate is provided with a plurality of first through holes, and the second explosion-proof steel plate is provided with a plurality of second through holes; the first through holes and the second through holes are in one-to-one correspondence; the buffer mechanism comprises a buffer component and a connecting piece, the connecting piece is located at the corner end of the first explosion-proof steel plate and penetrates through the corresponding first through hole and the corresponding second through hole, one end of the connecting piece is abutted to the first explosion-proof steel plate, the other end of the connecting piece is abutted to the second explosion-proof steel plate, the buffer component is arranged between the first explosion-proof steel plate and the second explosion-proof steel plate, and the buffer component is perpendicular to the first explosion-proof steel plate and the second explosion-proof steel plate. The application has the effect of improving the buffering capacity.
Description
Technical Field
The application relates to the field of building blasting technology, in particular to a safety covering system and a covering method for buffering blasting impact of a foundation pit.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. The foundation pit belongs to temporary engineering, and has the function of providing a space for the foundation masonry operation to be carried out according to the position designated by the design.
Currently, a series-connection spaced charge structure is mainly adopted in foundation pit blasting, and explosive is filled in blast holes according to the specified linear charge density.
Before the blasting operation is performed after the explosive is filled in the blasthole, in order to ensure the safety during the blasting, it is necessary to cover the blasthole with a blastcover and buffer the blast wave generated during the blasting with the blastcover.
However, most of the existing blasting guns are of a single-layer structure, are manufactured by cutting waste tires into strips and then connecting the strips, are relatively thin in structure, have relatively weak buffering capacity when in covering buffering, and have certain potential safety hazards.
Disclosure of Invention
In order to improve the technical problems, the application provides a safety covering system and a covering method for buffering blasting impact of a foundation pit.
In a first aspect, the present application provides a safety covering system for buffering blasting impact of a foundation pit, which adopts the following technical scheme:
the safety covering system for buffering the blasting impact of the foundation pit comprises a first explosion-proof steel plate and a second explosion-proof steel plate which are covered on a blasting hole and are distributed in parallel, wherein a buffer mechanism is arranged between the first explosion-proof steel plate and the second explosion-proof steel plate, and buffer rubber is arranged on the second explosion-proof steel plate;
the first explosion-proof steel plate is provided with a plurality of first through holes, and the second explosion-proof steel plate is provided with a plurality of second through holes; the first through holes and the second through holes are in one-to-one correspondence;
the buffer mechanism comprises a buffer component and a connecting piece, wherein the connecting piece is positioned at the corner end of the first explosion-proof steel plate and penetrates through the corresponding first through hole and the corresponding second through hole, one end of the connecting piece is in butt joint with the first explosion-proof steel plate, the other end of the connecting piece is in butt joint with the second explosion-proof steel plate, the buffer component is arranged between the first explosion-proof steel plate and the second explosion-proof steel plate, and the buffer component is perpendicular to the first explosion-proof steel plate and the second explosion-proof steel plate.
By adopting the technical scheme, when the foundation pit blasting is carried out, the shock waves generated by the blasting are firstly buffered by the buffer assembly, and the shock waves are reduced; the cushion rubber is capable of further cushioning the shock wave after the shock wave has moved to the position of the cushion rubber. Through the setting of buffer unit and buffering rubber, when carrying out the cover buffering, the impact force that foundation ditch blasting produced is passed through twice buffering in succession, and buffer capacity obtains promoting, has reduced the potential safety hazard.
Optionally, be equipped with the board of making an uproar that falls between buffer rubber and the explosion-proof steel sheet of second, it has the honeycomb hole to fall the equipartition on the board of making an uproar, a plurality of first through-hole equipartition is on the explosion-proof steel sheet of first, and a plurality of second through-hole equipartition is on the explosion-proof steel sheet of second, the honeycomb hole communicates with first through-hole, the second through-hole that corresponds from top to bottom.
Through adopting above-mentioned technical scheme, the sound wave that produces when the foundation ditch blasting propagates the honeycomb hole of the board of making an uproar of falling from underground through first through-hole in, and the honeycomb hole is polygonal structure all around, can reflect the sound wave well and weaken to the noise that produces when weakening the blasting. In addition, according to the sound wave principle, the intensity of sound waves received in different directions pointed by the sound source is different, and the higher the frequency of the sound waves is, the stronger the directivity is, so that the propagation direction of the sound waves tends to be straight. Because the first through hole and the second through hole which correspond up and down are communicated to form a vertical propagation channel, high-frequency sound waves generated by blasting impact can be directed to the upper air, the situation that the sound waves diverge to the periphery of a blasting area is reduced, and therefore the influence of noise waves on the surrounding environment of the blasting area is reduced.
Optionally, be equipped with the wire net on the board of making an uproar falls, be equipped with on the wire net and enclose and keep off the frame, buffer rubber locates and encloses and keep off in the frame, enclose and keep off the frame upper cover and be equipped with the fender lid.
By adopting the technical scheme, on one hand, the steel wire mesh can strengthen the structure of the noise reduction plate, so that the possibility of cracking the noise reduction plate when the noise reduction plate is subjected to blasting impact is reduced; on the other hand, the steel wire mesh can block the flying stone fragments brought up by the blasting impact, so that the phenomenon that the flying stone damages surrounding personnel and equipment is reduced. Through enclosing the setting that keeps off frame and fender lid, reduce to take place the buffer rubber when receiving the blasting impact and break away from the condition of wire net, be convenient for carry out recycle to buffer rubber.
Optionally, be equipped with the water storage chamber in the cushion rubber, the buffer solution has been stored to the water storage intracavity, be equipped with the water injection pipe on the cushion rubber, water injection pipe and water storage chamber intercommunication, the one end that the water injection pipe kept away from the water storage chamber is equipped with the shutoff stopper.
By adopting the technical scheme, on one hand, the buffer solution in the water storage cavity can buffer the impact force generated by blasting, and the finished product of the buffer solution is lower than the buffer rubber, so that the material finished product can be reduced; on the other hand, when carrying out the transportation and retrieving of buffer rubber, can empty the buffer solution in the water storage chamber, when reaching the scene and carrying out the construction of this cover system again to the buffer solution in the water storage chamber to reduce transportation cost.
Optionally, be equipped with the foam-rubber cushion on the wire net, be equipped with on the foam-rubber cushion and supply to enclose the partition groove that keeps off the frame and wear out, enclose the foam-rubber cushion that keeps off in the frame and locate buffer rubber's bottom.
By adopting the technical scheme, the foam-rubber cushion has elasticity and can further buffer blasting impact; in the second aspect, the foam-rubber cushion is of a loose porous structure, has good sound absorption performance and can reduce noise; in the third aspect, the foam-rubber cushion can prevent dust brought up by blasting impact and reduce the content of flying dust inhaled by an operator. In addition, when the buffer rubber is punched by shock waves in the enclosure, the sponge cushion positioned below the buffer rubber can play a role in protecting the buffer rubber, so that the damage of the buffer rubber is reduced.
Optionally, a buffer bag is arranged in the honeycomb holes, and carbon dioxide is filled in the buffer bag.
By adopting the technical scheme, the buffer bag can buffer blasting impact, and the buffer performance of the covering system is further improved. In addition, when the buffering bag is broken after being impacted by shock waves, the carbon dioxide gas in the buffering bag can escape, so that the content of oxygen in the gas in the honeycomb holes is reduced, the anti-flaming effect is achieved, and the condition that the noise reduction plate is burnt and damaged due to ignition during blasting is reduced.
Optionally, a plurality of buckles are arranged at the edge position of the first explosion-proof steel plate at equal intervals, buckling ropes are fastened on the buckles, a water injection bag is arranged at one end, far away from the buckles, of the buckling ropes, water is filled in the water injection bag, and the water injection bag is placed at the edge position of the sponge cushion at equal intervals.
Through adopting above-mentioned technical scheme, the water injection bag can increase the weight of this covering system, can reduce the height that this covering system bounced when receiving blasting impact to reduce this covering system and take place the condition of damaging, improve turnover utilization number of times. In addition, when the water injection bag is impacted, the water injection bag is punched up and broken after the water injection bag falls to the ground, water in the water injection bag splashes out and adsorbs dust generated by blasting, and the diffusion of blasting dust is reduced.
Optionally, the buffer assembly includes first uide bushing, first elastic component, guide bar, second elastic component and second uide bushing, first uide bushing is located on the first explosion-proof steel sheet, the second uide bushing is located on the second explosion-proof steel sheet, in first uide bushing was located to first elastic component, in the second uide bushing was located to the second elastic component, the one end of guide bar inserts in the first uide bushing and with first uide bushing sliding connection, the other end inserts in the second uide bushing and with second uide bushing sliding connection.
Through adopting above-mentioned technical scheme, when blasting protection, through the setting of first elastic component and second elastic component, buffer unit can cushion the impact force that produces effectively to reduce the potential safety hazard that the blasting produced.
In a second aspect, the present application further provides a covering method for buffering blasting impact of a foundation pit, which adopts the following technical scheme:
a covering method for cushioning a blast impact of a foundation pit, comprising the steps of:
selecting a covering material: according to parameters of the blasting design of the foundation pit, selecting a first explosion-proof steel plate, a second explosion-proof steel plate, a noise reduction plate and a steel wire mesh with proper specification and size, and welding a retaining ring at the edge of the first explosion-proof steel plate;
blasting network inspection: before the protective material is covered, checking blasting filling and network connection, arranging blasting network wires, and paving a first explosion-proof steel plate on each blasting hole;
and (3) installing a buffer mechanism: the first guide sleeve and the second guide sleeve can be positioned and installed according to the first through hole on the first explosion-proof steel plate and the second through hole corresponding to the position on the second explosion-proof steel plate, the first guide sleeve is welded on the first explosion-proof steel plate, and the second guide sleeve is welded on the second explosion-proof steel plate; then, the first elastic piece and the second elastic piece are respectively installed, one end of the first elastic piece is inserted into the first guide sleeve, and the other end of the first elastic piece is inserted into the second guide sleeve; finally, installing a connecting piece to enable the first explosion-proof steel plate and the second explosion-proof steel plate to be connected;
and (3) noise reduction plate installation: gluing one surface of the noise reduction plate, and adhering the noise reduction plate to a second explosion-proof steel plate;
buffer pouch installation: placing the buffer bag in honeycomb holes on the noise reduction plate;
and (3) steel wire mesh installation: gluing the other side of the noise reduction plate, and paving a steel wire mesh on the noise reduction plate so that the steel wire mesh is glued on the noise reduction plate;
and (3) installing a surrounding baffle frame: welding the enclosure frame to the steel wire net;
installing a sponge cushion;
and (3) buffer rubber installation: after the buffer rubber is placed in the enclosure, filling water into a water storage cavity of the buffer rubber from a water injection pipe, then plugging a pipe orifice of the water injection pipe by using a water plug, and finally covering a baffle cover;
and (3) covering a water filling bag: after the water injection bag is covered at the edge position of the steel wire mesh, the water injection bag is connected with the retaining ring through the retaining rope.
Through adopting above-mentioned technical scheme, first through-hole on the first explosion-proof steel sheet and the second through-hole on the second explosion-proof steel sheet have assistance-localization real-time's function, are convenient for carry out the determination of welding position to first uide bushing and second uide bushing to improve buffer assembly's installation effectiveness and installation accuracy.
Optionally, in the step of installing the foam-rubber cushion, a layer of paint is firstly brushed on the upper end of the enclosing frame, then the foam-rubber cushion is placed on the upper end of the enclosing frame after the periphery of the foam-rubber cushion is aligned with the periphery of the steel wire mesh, so that the paint on the enclosing frame is rubbed on the foam-rubber cushion, then the foam-rubber cushion placed in the enclosing frame is cut out according to the shape of the rubbing, and finally the cut foam-rubber cushion separated is respectively placed on the steel wire mesh at the corresponding position.
Through adopting above-mentioned technical scheme, can be with enclosing the accurate demonstration of the horizontal cross-section shape of fender frame on the foam-rubber cushion to improve the cutting out precision of foam-rubber cushion, thereby be convenient for the foam-rubber cushion and lay on the wire net.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the buffer component and the buffer rubber, when covering and buffering are carried out, the impact force generated by the blasting of the foundation pit is buffered twice in sequence, the buffer capacity is improved, and the potential safety hazard is reduced;
2. through the arrangement of the steel wire mesh, on one hand, the steel wire mesh can strengthen the structure of the noise reduction plate, so that the possibility of cracking the noise reduction plate when blasting impact is received is reduced; on the other hand, the steel wire mesh can block flying stone fragments brought up by blasting impact, so that the phenomenon that flying stone damages surrounding personnel and equipment is reduced;
3. by arranging the foam-rubber cushion, the foam-rubber cushion has elasticity and can further buffer blasting impact; in the second aspect, the foam-rubber cushion is of a loose porous structure, has good sound absorption performance and can reduce noise; in the third aspect, the foam-rubber cushion can block dust brought up by blasting impact and can reduce the content of flying dust inhaled by an operator; in addition, when the buffer rubber is punched by shock waves in the enclosure, the sponge cushion positioned below the buffer rubber can play a role in protecting the buffer rubber, so that the damage of the buffer rubber is reduced.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a schematic structural view of a connector embodying an embodiment of the present application.
Fig. 3 is a cross-sectional view of a cushioning assembly embodying an embodiment of the present application.
Fig. 4 is a schematic view of a noise reduction plate and a cushion bladder embodying an embodiment of the present application.
Fig. 5 is a schematic view of a steel wire mesh and a fence frame in an embodiment embodying the present application.
FIG. 6 is a cut-away view of a cushion rubber structure embodying an embodiment of the present application.
FIG. 7 is a schematic view of a sponge pad according to an embodiment of the present application
Reference numerals illustrate: 1. a first explosion-proof steel plate; 11. a first through hole; 12. a clasp ring; 121. buckling ropes; 1211. a water filling bag; 2. a second explosion-proof steel plate; 21. a second through hole; 3. a buffer mechanism; 31. a buffer assembly; 311. a first guide sleeve; 312. a first elastic member; 313. a guide rod; 314. a second elastic member; 315. a second guide sleeve; 32. a connecting piece; 321. a connecting bolt; 322. a coupling nut; 4. a noise reduction plate; 41. honeycomb holes; 42. buffering the pouch; 5. a steel wire mesh; 51. a surrounding block frame; 511. a blocking cover; 6. a buffer rubber; 61. a water storage chamber; 62. a water injection pipe; 621. a water blocking plug; 7. a sponge cushion; 71. dividing grooves.
Detailed Description
The present application will be described in further detail with reference to fig. 1-7.
In a first aspect, an embodiment of the present application discloses a safety cover system for cushioning a blast impact of a foundation pit.
Referring to fig. 1, a safety cover system for buffering blasting impact of a foundation pit comprises a first explosion-proof steel plate 1 and a second explosion-proof steel plate 2 which are sequentially covered on a blasting hole, wherein the first explosion-proof steel plate 1 and the second explosion-proof steel plate 2 are of rectangular plate-shaped structures which are arranged in parallel, and a buffer mechanism 3 is arranged between the first explosion-proof steel plate 1 and the second explosion-proof steel plate 2. When the foundation pit blasting is performed, the buffer mechanism 3 can buffer the impact force generated by the blasting, so that potential safety hazards can be reduced.
Referring to fig. 2, first through holes 11 are uniformly distributed on the first explosion-proof steel plate 1, second through holes 21 are uniformly distributed on the second explosion-proof steel plate 2, and the first through holes 11 and the second through holes 21 are in one-to-one correspondence. The buffer mechanism 3 comprises a buffer assembly 31 and a connecting piece 32, and the connecting piece 32 is positioned at four corner ends of the first explosion-proof steel plate 1. The connecting piece 32 comprises a connecting bolt 321 and a connecting nut 322, the connecting bolt 321 is simultaneously arranged in the corresponding first through hole 11 and the second through hole 21 in a penetrating mode, the tail portion of the connecting bolt 321 is in threaded connection with the connecting nut 322, the head portion of the connecting bolt 321 is in butt joint with the first explosion-proof steel plate 1, and the connecting nut 322 is in butt joint with the second explosion-proof steel plate 2. Through the setting of connecting piece 32, first explosion-proof steel sheet 1 and second explosion-proof steel sheet 2 are connected into a whole, reduce the condition that first explosion-proof steel sheet 1 and second explosion-proof steel sheet 2 take place the separation.
Referring to fig. 3, a buffer assembly 31 is provided between the first and second explosion-proof steel plates 1 and 2, and the buffer assembly 31 is perpendicular to the first and second explosion-proof steel plates 1 and 2. The buffer assembly 31 comprises a first guide sleeve 311, a first elastic piece 312, a guide rod 313, a second elastic piece 314 and a second guide sleeve 315, wherein the first guide sleeve 311 is fixedly connected to the first explosion-proof steel plate 1, the second guide sleeve 315 is fixedly connected to the second explosion-proof steel plate 2, the first elastic piece 312 is installed in the first guide sleeve 311, the second elastic piece 314 is installed in the second guide sleeve 315, one end of the guide rod 313 is inserted into the first guide sleeve 311 and is in sliding connection with the first guide sleeve 311, and the other end of the guide rod 313 is inserted into the second guide sleeve 315 and is in sliding connection with the second guide sleeve 315. In this embodiment, the first elastic member 312 and the second elastic member 314 are helical compression springs. During blasting protection, the buffer assembly 31 can effectively buffer impact force generated by blasting through the arrangement of the first elastic piece 312 and the second elastic piece 314, so that potential safety hazards generated by blasting are reduced.
Referring to fig. 4, a noise reduction plate 4 is fixedly connected to the second explosion-proof steel plate 2, and honeycomb holes 41 are uniformly distributed on the noise reduction plate 4, and the honeycomb holes 41 are communicated with the first through holes 11 and the second through holes 21 which correspond to each other vertically. In this embodiment, the noise reduction board 4 is made of rigid foam plastic, and has low cost, light weight, and excellent performance of shock resistance, shock absorption, buffering and sound insulation. Through the arrangement, sound waves generated during foundation pit blasting are transmitted into the honeycomb holes 41 of the noise reduction plate 4 from the underground through the first through holes 11, and the periphery of each honeycomb hole 41 is of a polygonal structure, so that the sound waves can be well reflected and weakened, and noise generated during blasting is reduced. In addition, according to the sound wave principle, the intensity of sound waves received in different directions pointed by the sound source is different, and the higher the frequency of the sound waves is, the stronger the directivity is, so that the propagation direction of the sound waves tends to be straight. Because the first through hole 11 and the second through hole 21 which are vertically corresponding are communicated to form a vertical propagation channel, high-frequency sound waves generated by blasting impact can be directed to the upper air, the situation that the sound waves diverge to the periphery of a blasting area is reduced, and therefore the influence of noise waves on the surrounding environment of the blasting area is reduced.
Referring to fig. 4, a buffer pouch 42 is placed in the honeycomb holes 41, and the buffer pouch 42 is filled with carbon dioxide. In this manner, the cushioning bladder 42 may cushion blast shocks, further enhancing the cushioning properties of the cover system. In addition, when the buffer bag 42 is broken after being impacted by the shock wave, the carbon dioxide gas in the buffer bag can escape, so that the content of oxygen in the gas in the honeycomb holes 41 is reduced, the flame-retardant effect is achieved, and the condition that the noise reduction plate 4 is burnt and damaged due to ignition during blasting is reduced.
Referring to fig. 5, a steel wire mesh 5 is fixedly connected to the noise reduction plate 4. The steel wire mesh 5 can block the flying stone fragments brought up by the blasting impact, so that the phenomenon that the flying stone damages surrounding personnel and equipment is reduced. In addition, the steel wire mesh 5 can strengthen the structure of the noise reduction plate 4, so that the possibility of cracking the noise reduction plate 4 when the explosion impact is received is reduced.
Referring to fig. 5, a shielding frame 51 is fixedly connected to the steel wire mesh 5, a buffer rubber 6 is placed in the shielding frame 51, and a shielding cover 511 is arranged on the shielding frame 51. After the shock wave has moved to the position of the cushion rubber 6, the cushion rubber 6 is able to further cushion the shock wave. Through the setting of enclosing fender frame 51 and fender lid 511, the reduction takes place when receiving the blasting impact that buffer rubber 6 breaks away from wire net 5, is convenient for carry out recycle to buffer rubber 6.
Referring to fig. 6, a water storage chamber 61 is formed in the buffer rubber 6, and a buffer solution is stored in the water storage chamber 61. The buffer rubber 6 is fixedly connected with a water injection pipe 62, the water injection pipe 62 is communicated with the water storage cavity 61, and a water blocking plug 621 is inserted at one end of the water injection pipe 62 away from the water storage cavity 61. In this embodiment, the buffer is water. On the one hand, the buffer solution in the water storage cavity 61 can buffer the impact force generated by blasting, and the finished product of the buffer solution is lower than the buffer rubber 6, so that the finished product of the material can be reduced; on the other hand, when the buffer rubber 6 is transported and recovered, the buffer liquid in the water storage chamber 61 can be emptied, and when the covering system is built after the covering system arrives at the site, the buffer liquid is injected into the water storage chamber 61, so that the transportation cost is reduced.
Referring to fig. 5 and 7, a foam-rubber cushion 7 is laid on the steel wire mesh 5, a dividing groove 71 for the enclosing frame 51 to pass through is formed in the foam-rubber cushion 7, and the foam-rubber cushion 7 in the enclosing frame 51 is arranged at the bottom of the buffer rubber 6. The reason for this is that: in the first aspect, the foam-rubber cushion 7 has elasticity and can further buffer the blasting impact; in the second aspect, the foam-rubber cushion 7 is of a loose porous structure, has good sound absorption performance and can reduce noise; in the third aspect, the foam-rubber cushion 7 can block dust brought up by blasting impact, and can reduce the content of flying dust sucked by an operator. In addition, when the buffer rubber 6 is punched by shock waves in the enclosure, the foam cushion 7 positioned below the buffer rubber 6 can play a role in protecting the buffer rubber 6, so that the damage of the buffer rubber 6 is reduced.
Referring to fig. 1, a plurality of buckles 12 are fixedly connected to the edge of the first explosion-proof steel plate 1 at equal intervals, buckling ropes 121 are fastened to the buckles 12, water injection bags 1211 are fastened to one ends of the buckling ropes 121, which are far away from the buckles 12, water is filled in the water injection bags 1211, and the water injection bags 1211 are placed at the edge of the foam cushion 7 at equal intervals. In this embodiment, the water injection bag 1211 is made of polyethylene. In this way, the water injection bag 1211 can increase the weight of the cover system, and can reduce the height to which the cover system springs up when a blast impact is applied, thereby reducing the occurrence of damage to the cover system and increasing the number of turnover uses. In addition, when the water injection bag 1211 is impacted, the water injection bag 1211 is broken after the water injection bag 1211 is dropped on the ground, and water in the water injection bag 1211 splashes out and adsorbs dust generated by blasting, so that the diffusion of blasting dust is reduced.
The implementation principle of the safety covering system for buffering the blasting impact of the foundation pit provided by the embodiment of the application is as follows: when the foundation pit blasting is carried out, the shock waves generated by the blasting are buffered by the buffer assembly 31 at first, and the shock waves are reduced; after the shock wave has moved to the position of the cushion rubber 6, the cushion rubber 6 is able to further cushion the shock wave. Through the setting of buffer unit 31 and buffer rubber 6, when covering the buffering, the impact force that the foundation ditch blasting produced is passed through twice buffering in succession, and buffer capacity obtains promoting, has reduced the potential safety hazard.
In a second aspect, the embodiment of the application also discloses a covering method for buffering the blasting impact of the foundation pit, which comprises the following steps:
referring to fig. 1, selection of cover materials: according to parameters of the blasting design of the foundation pit, a first explosion-proof steel plate 1, a second explosion-proof steel plate 2, a noise reduction plate 4 and a steel wire mesh 5 with proper specification and size are selected, and a retaining ring 12 is welded at the edge of the first explosion-proof steel plate 1.
Blasting network inspection: before the protective material is covered, the blasting filling and network connection are checked, blasting network wires are arranged, and then a first explosion-proof steel plate 1 is paved on each blasting hole.
Referring to fig. 3, the buffer mechanism 3 is mounted: the first guide sleeve 311 and the second guide sleeve 315 can be positioned and installed according to the first through hole 11 on the first explosion-proof steel plate 1 and the second through hole 21 corresponding to the position on the second explosion-proof steel plate 2, the first guide sleeve 311 is welded on the first explosion-proof steel plate 1, and the second guide sleeve 315 is welded on the second explosion-proof steel plate 2; then, the first elastic member 312 and the second elastic member 314 are respectively installed, and one end of the first elastic member 312 is inserted into the first guide sleeve 311, and the other end is inserted into the second guide sleeve 315; finally, the connecting piece 32 is installed so that the first explosion-proof steel plate 1 and the second explosion-proof steel plate 2 are connected.
Referring to fig. 1 and 4, the noise reduction plate 4 is mounted: one surface of the noise reduction plate 4 is glued, and the noise reduction plate 4 is adhered to the second explosion-proof steel plate 2.
Cushioning bladder 42 is mounted: the cushion pocket 42 is placed in the honeycomb holes 41 on the noise reduction plate 4.
And (3) installing a steel wire mesh 5: the other side of the noise reduction plate 4 is coated with glue, and the steel wire mesh 5 is paved on the noise reduction plate 4, so that the steel wire mesh 5 is glued on the noise reduction plate 4.
The enclosure frame 51 is installed: the enclosure frame 51 is welded to the steel wire mesh 5.
The foam cushion 7 is installed: firstly, brushing a layer of paint on the upper end of the enclosing frame 51, aligning the periphery of the foam-rubber cushion 7 with the periphery of the steel wire gauze 5, placing the foam-rubber cushion 7 on the upper end of the enclosing frame 51, rubbing the paint on the enclosing frame 51 on the foam-rubber cushion 7, cutting out the foam-rubber cushion 7 placed in the enclosing frame 51 according to the shape of the rubbing, and finally placing the cut-out and separated foam-rubber cushion 7 on the steel wire gauze 5 at the corresponding position respectively.
Referring to fig. 1 and 6, the cushion rubber 6 is mounted: after the buffer rubber 6 is placed in the enclosure, water is filled into the water storage cavity 61 of the buffer rubber 6 from the water injection pipe 62, then the pipe orifice of the water injection pipe 62 is plugged by the water plug 621, and finally the enclosure cover 511 is covered.
The water filling bag 1211 covers: after the water injection bag 1211 is covered at the edge position of the steel wire mesh 5, the water injection bag 1211 and the grommet 12 are connected by the grommet 121.
The implementation principle of the covering method for buffering the blasting impact of the foundation pit provided by the embodiment of the application is as follows: in the step of installing the buffer mechanism 3, the first through hole 11 on the first explosion-proof steel plate 1 and the second through hole 21 on the second explosion-proof steel plate 2 have the function of auxiliary positioning, so that the determination of welding positions of the first guide sleeve 311 and the second guide sleeve 315 is facilitated, and the installation efficiency and the installation accuracy of the buffer assembly 31 are improved. Through the above-mentioned installation step of the foam-rubber cushion 7, the horizontal cross-sectional shape of the enclosure frame 51 can be accurately displayed on the foam-rubber cushion 7, thereby improving the cutting accuracy of the foam-rubber cushion 7, and facilitating the laying of the foam-rubber cushion 7 onto the steel wire mesh 5. Through the combined action of the buffer assembly 31, the buffer bag 42, the foam cushion 7 and the buffer rubber 6, the impact force generated by the blasting of the foundation pit can be buffered for a plurality of times, and the buffering capacity is improved, so that the potential safety hazard is reduced.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A safety cover system for cushioning a blast impact of a foundation pit, comprising: the explosion-proof steel plate explosion-proof device comprises a first explosion-proof steel plate (1) and a second explosion-proof steel plate (2) which are covered on explosion holes and are distributed in parallel, a buffer mechanism (3) is arranged between the first explosion-proof steel plate (1) and the second explosion-proof steel plate (2), and buffer rubber (6) is arranged on the second explosion-proof steel plate (2);
a plurality of first through holes (11) are formed in the first explosion-proof steel plate (1), and a plurality of second through holes (21) are formed in the second explosion-proof steel plate (2); the first through holes (11) and the second through holes (21) are in one-to-one correspondence;
the buffer mechanism (3) comprises a buffer assembly (31) and a connecting piece (32), wherein the connecting piece (32) is positioned at the corner end of the first explosion-proof steel plate (1) and penetrates through the corresponding first through hole (11) and the corresponding second through hole (21), one end of the connecting piece (32) is abutted to the first explosion-proof steel plate (1), the other end of the connecting piece is abutted to the second explosion-proof steel plate (2), the buffer assembly (31) is arranged between the first explosion-proof steel plate (1) and the second explosion-proof steel plate (2), and the buffer assembly (31) is perpendicular to the first explosion-proof steel plate (1) and the second explosion-proof steel plate (2);
a noise reduction plate (4) is arranged between the buffer rubber (6) and the second explosion-proof steel plate (2), honeycomb holes (41) are uniformly distributed on the noise reduction plate (4), a plurality of first through holes (11) are uniformly distributed on the first explosion-proof steel plate (1), a plurality of second through holes (21) are uniformly distributed on the second explosion-proof steel plate (2), and the honeycomb holes (41) are communicated with the first through holes (11) and the second through holes (21) which correspond to each other vertically;
the noise reduction plate (4) is provided with a steel wire mesh (5), the steel wire mesh (5) is provided with a surrounding frame (51), the buffer rubber (6) is arranged in the surrounding frame (51), and the upper cover of the surrounding frame (51) is provided with a blocking cover (511);
the steel wire mesh (5) is provided with a foam-rubber cushion (7), the foam-rubber cushion (7) is provided with a dividing groove (71) for the surrounding frame (51) to penetrate out, and the foam-rubber cushion (7) in the surrounding frame (51) is arranged at the bottom of the buffer rubber (6);
the anti-explosion steel plate is characterized in that a plurality of buckles (12) are arranged at the edge of the first anti-explosion steel plate (1) at equal intervals, buckling ropes (121) are tied on the buckles (12), water injection bags (1211) are arranged at one ends, far away from the buckles (12), of the buckling ropes (121), water is filled in the water injection bags (1211), and the water injection bags (1211) are placed at the edge of the foam cushion (7) at equal intervals.
2. A safety cover system for cushioning a blast impact of a pit according to claim 1, wherein: the buffer rubber is characterized in that a water storage cavity (61) is formed in the buffer rubber (6), buffer liquid is stored in the water storage cavity (61), a water injection pipe (62) is arranged on the buffer rubber (6), the water injection pipe (62) is communicated with the water storage cavity (61), and a water blocking plug (621) is arranged at one end, far away from the water storage cavity (61), of the water injection pipe (62).
3. A safety cover system for cushioning a blast impact of a pit according to claim 2, wherein: a buffer bag (42) is arranged in the honeycomb holes (41), and carbon dioxide is filled in the buffer bag (42).
4. A safety cover system for cushioning a blast impact of a pit according to claim 3, wherein: the buffer assembly (31) comprises a first guide sleeve (311), a first elastic piece (312), a guide rod (313), a second elastic piece (314) and a second guide sleeve (315), wherein the first guide sleeve (311) is arranged on a first explosion-proof steel plate (1), the second guide sleeve (315) is arranged on a second explosion-proof steel plate (2), the first elastic piece (312) is arranged in the first guide sleeve (311), the second elastic piece (314) is arranged in the second guide sleeve (315), one end of the guide rod (313) is inserted into the first guide sleeve (311) and is in sliding connection with the first guide sleeve (311), and the other end of the guide rod (313) is inserted into the second guide sleeve (315) and is in sliding connection with the second guide sleeve (315).
5. A method of using a safety cover system for cushioning a blast impact of a pit in accordance with claim 4, comprising: the method comprises the following steps:
selecting a covering material: according to parameters of the blasting design of the foundation pit, selecting a first explosion-proof steel plate (1), a second explosion-proof steel plate (2), a noise reduction plate (4) and a steel wire mesh (5) with proper specification and size, and welding a retaining ring (12) at the edge of the first explosion-proof steel plate (1);
blasting network inspection: before the protective material is covered, checking blasting filling and network connection, arranging blasting network wires, and paving a first explosion-proof steel plate (1) on each blasting hole;
and (3) installing a buffer mechanism: positioning and mounting a first guide sleeve (311) and a second guide sleeve (315) according to a first through hole (11) on the first explosion-proof steel plate (1) and a second through hole (21) corresponding to the position on the second explosion-proof steel plate (2), welding the first guide sleeve (311) on the first explosion-proof steel plate (1), and welding the second guide sleeve (315) on the second explosion-proof steel plate (2); then, the first elastic piece (312) and the second elastic piece (314) are respectively installed, one end of the first elastic piece (312) is inserted into the first guide sleeve (311), and the other end is inserted into the second guide sleeve (315); finally, installing a connecting piece (32) to enable the first explosion-proof steel plate (1) to be connected with the second explosion-proof steel plate (2);
and (3) installing a noise reduction plate (4): one surface of the noise reduction plate (4) is glued, and the noise reduction plate (4) is adhered to the second explosion-proof steel plate (2);
cushioning pouch (42) mounting: placing the cushioning pocket (42) in a honeycomb hole (41) on the noise reduction plate (4);
and (3) installing a steel wire mesh (5): gluing the other side of the noise reduction plate (4), and paving a steel wire mesh (5) on the noise reduction plate (4) so that the steel wire mesh (5) is glued on the noise reduction plate (4);
and (3) installing a surrounding and blocking frame (51): welding the enclosure frame (51) to the steel wire mesh (5);
the sponge cushion (7) is arranged;
and (3) installing buffer rubber (6): after the buffer rubber (6) is placed in the enclosing and blocking frame (51), water is filled into the water storage cavity (61) of the buffer rubber (6) from the water injection pipe (62), then the pipe orifice of the water injection pipe (62) is blocked by the water blocking plug (621), and finally the blocking cover (511) is covered;
the water filling bag (1211) covers: after the water injection bag (1211) is covered at the edge position of the steel wire mesh (5), the water injection bag (1211) is connected with the retaining ring (12) through the retaining rope (121).
6. The method of use according to claim 5, wherein: in the installation step of the foam-rubber cushion (7), firstly, a layer of paint is brushed on the upper end of the enclosing frame (51), then the periphery of the foam-rubber cushion (7) is aligned with the periphery of the steel wire mesh (5), and then the foam-rubber cushion (7) is placed on the upper end of the enclosing frame (51), so that the paint on the enclosing frame (51) is rubbed on the foam-rubber cushion (7), then the foam-rubber cushion (7) placed in the enclosing frame (51) is cut out according to the shape obtained by rubbing, and finally the cut-out foam-rubber cushion (7) is respectively placed on the steel wire mesh (5) at the corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192611.5A CN114577082B (en) | 2022-02-28 | 2022-02-28 | Safety covering system and method for buffering blasting impact of foundation pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192611.5A CN114577082B (en) | 2022-02-28 | 2022-02-28 | Safety covering system and method for buffering blasting impact of foundation pit |
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| CN114577082A CN114577082A (en) | 2022-06-03 |
| CN114577082B true CN114577082B (en) | 2023-09-29 |
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| CN205352227U (en) * | 2015-12-18 | 2016-06-29 | 上海建工七建集团有限公司 | Safety protection support body |
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| AU2021101475A4 (en) * | 2021-03-23 | 2021-05-13 | China Railway 18Th Bureau Group Co., Ltd. | Pier deep foundation pit blasting method capable of controlling flying stone by water coupling soil pressing |
| CN112902781A (en) * | 2021-03-22 | 2021-06-04 | 广东锡源爆破科技股份有限公司 | Safety covering system and covering method for foundation pit blasting in complex environment |
| CN214666434U (en) * | 2021-03-19 | 2021-11-09 | 中交二公局第三工程有限公司 | A burst is by mechanism for blasting in presplitting blasting big gun hole for foundation ditch excavation |
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- 2022-02-28 CN CN202210192611.5A patent/CN114577082B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205352227U (en) * | 2015-12-18 | 2016-06-29 | 上海建工七建集团有限公司 | Safety protection support body |
| CN206803863U (en) * | 2017-06-07 | 2017-12-26 | 浙江华东工程咨询有限公司 | A kind of covered protection system for rock blasting area |
| CN209783441U (en) * | 2019-04-22 | 2019-12-13 | 南京民生源人防工程防护设备有限公司 | Blasting protector |
| CN214666434U (en) * | 2021-03-19 | 2021-11-09 | 中交二公局第三工程有限公司 | A burst is by mechanism for blasting in presplitting blasting big gun hole for foundation ditch excavation |
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| AU2021101475A4 (en) * | 2021-03-23 | 2021-05-13 | China Railway 18Th Bureau Group Co., Ltd. | Pier deep foundation pit blasting method capable of controlling flying stone by water coupling soil pressing |
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|---|---|
| CN114577082A (en) | 2022-06-03 |
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