CN218030235U

CN218030235U - Tunnel emergency risk avoiding device for rock burst protection

Info

Publication number: CN218030235U
Application number: CN202222449769.4U
Authority: CN
Inventors: 赵力; 党建涛; 王博; 田安安; 厍海鹏
Original assignee: Shaanxi Province Hanjiang To Weihe River Valley Water Diversion Project Construction Co ltd
Current assignee: Shaanxi Province Hanjiang To Weihe River Valley Water Diversion Project Construction Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-13
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a tunnel emergency danger avoiding device for rock burst protection, which comprises a plurality of support columns, wherein the support columns are vertically arranged in a circular shape, the top ends of the support columns are fixed with an upper ring beam, the lower parts of the support columns are fixed with a lower ring beam, and the shapes of the upper ring beam and the lower ring beam are matched with the vertical arrangement of the support columns; the upper ring beam is provided with a top ring beam, bolt holes are formed in the upper ring beam and the top ring beam, the upper ring beam and the top ring beam are detachably connected through bolts, and a hemispherical top baffle is fixed on the top ring beam. The protective device can be flexibly arranged according to the section of the tunnel, the rock burst strength, the construction organization and the like, mainly prefabricated, only bolted connection is needed on site, and the protective device can be quickly installed and quickly taken effect with less labor and lower labor intensity; when the rock burst risk position changes, the movable rock burst safety device can be detached and moved to a corresponding position for repeated use.

Description

Tunnel emergency risk avoiding device for rock burst protection

Technical Field

The utility model belongs to the technical field of the tunnel construction, a emergent danger avoiding device of tunnel for rock burst protection is related to.

Background

Rock burst is a common geological disaster in deep-buried underground engineering construction. Under the high ground stress environment, under the action of excavation or other external disturbance, elastic deformation potential energy gathered in the rock mass is suddenly released, so that the rock mass is burst and ejected to form rock burst. The rock burst is sudden and destructive, easily causes equipment damage and personal casualties, and becomes a worldwide problem in the fields of rock underground engineering and rock mechanics. Therefore, necessary protection is needed to be carried out on personnel and equipment in the construction of the rockburst section so as to ensure the construction safety.

Common protection measures include active protection and passive protection. Active protection mainly comprises the steps of 'short footage, multi-cycle' excavation, timely water spraying to a rock face after excavation, construction of radial stress release holes, support strengthening and the like, the prevention and control effects are good, the input resources are many, the time consumption is long, the protection capability is difficult to form quickly, personnel face rockburst threats in the active protection construction process, meanwhile, due to the fact that rockburst has strong burstiness and randomness, the occurrence time and the occurrence position of rockburst are difficult to predict accurately, and even if active protection is adopted, huge engineering accident risks still exist. The passive protection mainly comprises wearing a helmet cap, wearing a bulletproof vest and the like, can deal with the threat of rock burst at any time, but has the problems of small protection area, low strength and the like, and the guarantee degree of personnel safety is low when the rock burst occurs.

Because active protection and passive protection have certain limitation, a tunnel emergency danger avoiding device for rock burst protection is urgently needed to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an emergent danger device of keeping away of tunnel for rock burst protection has solved among the prior art protection effect swift, the low problem of degree of safety inadequately.

The utility model adopts the technical scheme that the emergency danger avoiding device for the tunnel for rock burst protection comprises a plurality of support columns, wherein the support columns are vertically arranged in a circular shape, the top ends of the support columns are fixed with an upper ring beam, the lower parts of the support columns are fixed with a lower ring beam, and the shapes of the upper ring beam and the lower ring beam are matched with the vertical arrangement of the support columns; the upper ring beam is provided with a top ring beam, the upper ring beam and the top ring beam are provided with bolt holes, the upper ring beam and the top ring beam are detachably connected through bolts, and a hemispherical top baffle is fixed on the top ring beam.

The utility model discloses a characteristics still lie in:

the support column outside is equipped with enclosure plate, and enclosure plate's lower limb is not higher than the collar tie beam down.

Enclose baffle one end and adjacent support column and pass through the loose-leaf and realize swing joint, and the one end that the loose-leaf was kept away from to enclosing baffle is fixed with the buckle, and enclosing baffle's lower border is not more than 200mm apart from the height of support column bottom surface.

The two ends of the enclosure baffle are fixedly welded with the adjacent support columns, and the lower edge of the enclosure baffle is not less than 600mm away from the bottom surfaces of the support columns.

The enclosure baffle and the top baffle are of a three-layer composite structure, the outer layer is a steel plate, the middle layer is a rubber plate, and the inner layer is a steel plate.

The support column inboard is equipped with emergency lighting lamp, and emergency lighting lamp adopts the energy storage battery power supply.

And a plurality of transverse stiffening plates and longitudinal stiffening plates are welded and fixed on the top ring beam.

The support columns, the upper ring beam, the lower ring beam, the top ring beam, the transverse stiffening plate and the longitudinal stiffening plate are all made of steel.

The pipe diameter of the support column is 80-140mm, the pipe wall thickness is 2-4mm, and the height is 1000-1500mm.

The pipe diameters of the upper ring beam, the lower ring beam and the top ring beam are 50-100mm, the pipe wall thickness is 1.5-3mm, and the diameter is 1000-2400mm.

The utility model improves the impact resistance by combining the upper ring beam, the lower ring beam, the support columns and the stiffening plates to form an integral frame; the protective area is increased by adopting the enclosing baffle and the top baffle, and the protective full-coverage is realized for the part with multiple rock burst (the arch part or the arch waist position of the tunnel); the enclosure baffle and the top baffle adopt a three-layer composite structure of a steel plate and a rubber plate, the steel plate is high in strength, the rubber plate absorbs energy, and the protection effect is further improved. Meanwhile, the protective device can be flexibly arranged according to the section of the tunnel, the rock burst strength, the construction organization and the like, the prefabrication is mainly performed, only the bolt connection is needed on the site, and the rapid installation and the rapid effect of the protective device are realized with a small amount of labor and lower labor intensity; when the rock burst risk position changes, the movable rock burst safety device can be detached and moved to a corresponding position for repeated use.

Drawings

Fig. 1 is a schematic structural view of the tunnel emergency risk avoiding device for rock burst protection of the present invention;

fig. 2 is a schematic view of a baffle plate of the tunnel emergency danger prevention device for rock burst protection of the present invention;

fig. 3 is a schematic view of the connection between the enclosure plate and the support column of the emergency danger avoiding device for tunnel for rock burst protection of the present invention;

fig. 4 is a schematic view of an upper ring beam of the emergency danger avoiding device for tunnel for rock burst protection of the present invention;

fig. 5 is a schematic view of a top ring beam of the emergency danger avoiding device for tunnel for rock burst protection of the present invention;

figure 6 is the utility model discloses a material structure schematic diagram of fender and top baffle that is used for emergent danger avoiding device of tunnel of rock burst protection.

In the drawing, 1, a support column, 2, an upper ring beam, 3, a lower ring beam, 4, a surrounding baffle, 5 bolt holes, 6, a top ring beam, 7, a transverse stiffening plate, 8, a longitudinal stiffening plate, 9, a top baffle, 10, a steel plate, 11, a rubber plate, 12, a buckle, 13, an emergency lamp and 14, a support platform.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the utility model discloses an emergent dangerous device of keeping away of tunnel for rock burst protection, including the support column 1 of 6 vertical settings, circle roof beam 2, circle roof beam 3 under the lower part welding of support column 1 on the top welding of support column 1. As shown in fig. 2, the outer side of the supporting column 1 is provided with a baffle 4, and the lower edge of the baffle 4 is not higher than the lower ring beam 3. The inboard of support column 1 is equipped with emergency lighting lamp 13, and emergency lighting lamp 13 adopts the energy storage battery power supply. The support column 1 is connected with a support platform 14 (a TBM body or a tunnel bottom plate) into a whole through a high-strength bolt.

As shown in fig. 3, the present application provides a first solution for facilitating personnel entry and exit. Namely, one end of the enclosing baffle 4 is movably connected with the adjacent supporting columns 1 through a hinge, and a buckle 12 is fixed at one end of the enclosing baffle 4 far away from the hinge, so that a baffle door can be formed. The height of the lower edge of the enclosure plate 4 from the bottom surface (namely the supporting platform 14) of the supporting column 1 is not more than 200mm, so that a larger protection area is ensured.

Furthermore, in order to strengthen the protective effect of the whole device when in use and ensure the safety of personnel, the application also provides a scheme two. The two ends of the baffle 4 and the adjacent supporting columns 1 are welded and fixed, so that a whole is formed; the height of the lower edge of the enclosure plate 4 from the bottom surface of the support column 1 (i.e. the support platform 14) is 600-800mm, so that a person can bend down to enter and exit through the space below the enclosure plate 4, and meanwhile, the enough protection area is kept.

As shown in fig. 4, the bolt holes 5 are reserved on the upper ring beam 2 and the top ring beam 6, and the two are connected by bolts. As shown in fig. 5, 2 transverse

stiffening plates

7 and 1 longitudinal stiffening plate 8 are welded to the top ring beam 6, and a top baffle 9 is welded to the outer sides of the transverse stiffening plates 7 and the longitudinal stiffening plates 8.

In the embodiment, the supporting columns 1 are made of steel materials, the height is 1000-1500mm, the pipe diameter is 80-140mm, the wall thickness of the pipe is 2-4mm, and the number of the supporting columns is 6. The upper ring beam 2, the lower ring beam 3 and the top ring beam 6 are made of steel materials, the diameter is 1000-2400mm, the pipe diameter is 50-100mm, and the wall thickness of the pipe is 1.5-3mm.

As shown in fig. 6, the transverse stiffening plate 7 and the longitudinal stiffening plate 8 are made of steel, the enclosure baffle 4 and the top baffle 9 are of a three-layer composite structure, the outer layer is a steel plate 10, the middle layer is a rubber plate 11, and the inner layer is a steel plate 10.

The utility model discloses a device use as follows:

step 1: pre-judging the possible rock burst strength by means of advanced detection means and geological data analysis, determining the sizes of the upper ring beam 2, the lower ring beam 3 and the top ring beam 6, the sizes, the number and the arrangement forms of the support columns 1, the transverse stiffening plates 7 and the longitudinal stiffening plates 8 by combining the tunnel section, the rock burst strength and the construction organization, performing prefabrication processing, welding the upper ring beam 2, the lower ring beam 3 and the support columns 1 into a whole, and welding the top ring beam 6, the transverse stiffening plates 7, the longitudinal stiffening plates 8 and the top baffle plates 9 into a whole;

and 2, step: determining an installation position by combining construction organization, wherein the installation position is close to a working face of personnel in a rockburst area, fixing a support column 1 on a supporting platform 14 (a TBM machine body or a tunnel bottom plate) through a high-strength bolt, and fixedly connecting an upper ring beam 2 with a top ring beam 6 through the high-strength bolt;

and step 3:

under the condition of the first scheme, in the construction process, when the rock burst risk is increased, constructors can open the surrounding baffle 4 nearby, enter the emergency danger avoiding device and lock the buckle 12, and can accommodate 1-3 persons according to the space size;

under the condition of the second scheme, in the construction process, when the rock burst risk is increased, constructors can bend down to enter the emergency danger avoiding device through the space below the surrounding baffle 4, and can accommodate 1-3 persons according to the size of the space;

and 4, step 4:

under the condition of the first scheme, when the rock burst risk is reduced, constructors loosen the buckles 12 to push the surrounding baffle 4 away from the emergency danger avoiding device to continue construction;

under the condition of the second scheme, when the rock burst risk is reduced, the constructors bend over and leave the emergency danger avoiding device through the space below the surrounding baffle 4 to continue construction;

and 5: with the advance of tunnel face excavation, when the rock burst risk position changes, loosening the high-strength bolt to separate the upper ring beam 2 from the top ring beam 6, and loosening the high-strength bolt to separate the support column 1 from the support platform 14 (a TBM machine body or a tunnel bottom plate);

step 6: and (4) installing the emergency danger avoiding device at the next rock burst risk position according to the step 2.

The utility model discloses an emergent danger prevention device of tunnel result of use is obvious, mainly shows in following aspect:

(1) The upper ring beam 2, the lower ring beam 3, the support columns 1, the transverse stiffening plates 7 and the longitudinal stiffening plates 8 are combined to form an integral frame, so that the impact resistance is improved;

(2) The protective area is increased by adopting the enclosing baffle 4 and the top baffle 9, and the protective full coverage is realized for the part (the arch part or the arch waist position) with multiple rock burst; the enclosure baffle 4 and the top baffle 9 adopt a three-layer composite structure of a steel plate and a rubber plate, the high strength of the steel plate is combined with the energy absorption advantage of the rubber plate, and the protection effect is further improved;

(3) The protective device can be flexibly arranged according to the section of the tunnel, the rock burst strength, the construction organization and the like, mainly prefabricated, only bolted connection is needed on site, and the protective device can be quickly installed and quickly taken effect with less labor and lower labor intensity; when the rock burst risk position changes, the movable rock burst risk position can be detached and moved to a corresponding position for repeated use.

Claims

1. The emergency tunnel danger avoiding device for rock burst protection is characterized by comprising a plurality of supporting columns (1), wherein the supporting columns (1) are vertically arranged in a circular shape, an upper ring beam (2) is fixed at the top ends of the supporting columns (1), a lower ring beam (3) is fixed at the lower part of each supporting column (1), and the shapes of the upper ring beam (2) and the lower ring beam (3) are identical with the vertical arrangement of the supporting columns (1); the upper ring beam (2) is provided with a top ring beam (6), the upper ring beam (2) and the top ring beam (6) are provided with bolt holes (5), the upper ring beam (2) and the top ring beam (6) are detachably connected through bolts, and a hemispherical top baffle plate (9) is fixed on the top ring beam (6).

2. The emergency danger avoiding device for tunnel used for rock burst protection according to claim 1, wherein a surrounding baffle (4) is arranged outside the supporting column (1), and the lower edge of the surrounding baffle (4) is not higher than the lower ring beam (3).

3. The emergency danger avoiding device for the tunnel for rock burst protection according to claim 2, wherein one end of the enclosure plate (4) is movably connected with the adjacent support column (1) through a hinge, a buckle (12) is fixed at one end of the enclosure plate (4) far away from the hinge, and the height of the lower edge of the enclosure plate (4) from the bottom surface of the support column (1) is not more than 200mm.

4. The tunnel emergency danger avoiding device for rock burst protection according to claim 2, wherein two ends of the enclosure plate (4) are fixed with the adjacent support columns (1) by welding, and the height of the lower edge of the enclosure plate (4) from the bottom surfaces of the support columns (1) is not less than 600mm.

5. The tunnel emergency danger avoiding device for rock burst protection according to claim 2, wherein the enclosure plate (4) and the top baffle plate (9) are of a three-layer composite structure, the outer layer of the enclosure plate (4) is a steel plate (10), the middle layer of the enclosure plate (4) is a rubber plate (11), and the inner layer of the enclosure plate (4) is the steel plate (10).

6. The tunnel emergency danger avoiding device for rock burst protection according to claim 1, wherein an emergency lighting lamp (13) is arranged on the inner side of the supporting column, and the emergency lighting lamp (13) is powered by an energy storage battery.

7. The tunnel emergency danger avoiding device for rock burst protection according to claim 1, wherein a plurality of transverse stiffening plates (7) and longitudinal stiffening plates (8) are welded and fixed on the top ring beam (6).

8. The emergency danger avoiding device for the tunnel for rock burst protection according to claim 7, wherein the supporting columns (1), the upper ring beam (2), the lower ring beam (3), the top ring beam (6), the transverse stiffening plate (7) and the longitudinal stiffening plate (8) are made of steel.

9. The tunnel emergency danger avoiding device for rock burst protection according to claim 1, wherein the pipe diameter of the supporting column (1) is 80-140mm, the pipe wall thickness is 2-4mm, and the height is 1000-1500mm; the diameters of the upper ring beam (2), the lower ring beam (3) and the top ring beam (6) are 1000-2400mm, the pipe diameters are 50-100mm, and the pipe wall thicknesses are 1.5-3mm.