CN217582122U - Cut hole structure for tunnel blasting tunneling engineering - Google Patents
Cut hole structure for tunnel blasting tunneling engineering Download PDFInfo
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- CN217582122U CN217582122U CN202221656940.2U CN202221656940U CN217582122U CN 217582122 U CN217582122 U CN 217582122U CN 202221656940 U CN202221656940 U CN 202221656940U CN 217582122 U CN217582122 U CN 217582122U
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Abstract
The utility model provides a cut hole structure for among tunnel blasting tunnelling engineering relates to engineering blasting technical field. A cut hole structure for use in tunnel blasting excavation work includes: the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole; the tunnel blasting tunneling machine has a good blasting effect and can effectively reduce operation vibration in tunnel blasting tunneling engineering.
Description
Technical Field
The utility model relates to an engineering blasting technical field particularly, relates to a cut hole structure for among tunnel blasting excavation engineering.
Background
Due to the economy and the applicability, tunnel excavation is carried out on a large number of tunnel projects by selecting a drilling and blasting construction mode. The existing common hole digging modes mainly comprise a straight hole digging mode and an inclined hole digging mode. The straight hole is drawn, namely, the hole is drawn to be vertical to a rock body to be dug, and the huge explosive force generated by a group of explosive charges in the blast holes which are parallel to each other and have small eye distance is utilized to break the rock inside the hole.
The hole digging mode in the drilling and blasting construction is the key for the success of blasting and is always the key point of the research of the scholars. The vibrations caused are generally maximum because the hole is initiated first, with only one free surface, and the hole must maintain a certain charge in order to blast and throw the rock out. The existing hole digging mode is difficult to maintain good blasting effect and ensure small blasting vibration, so a new hole digging mode needs to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cut hole structure for among tunnel blasting tunnelling engineering, it has good blasting effect and can effectively reduce the operation vibration among the tunnel blasting tunnelling engineering.
The embodiment of the utility model is realized like this:
the embodiment of the application provides a slotted hole structure for tunnel blasting tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises a first cut hole, a second cut hole is arranged on the periphery of the first cut hole, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole.
In some embodiments of the present invention, the first cut holes include a main cut hole and a sub cut hole, the main cut hole is vertically disposed, and the sub cut hole is disposed from the hole opening to the hole bottom and inclined to a side away from the main cut hole gradually.
In some embodiments of the present invention, the second cut hole is inclined from the bottom of the hole to the opening of the hole, and is inclined to a side away from the first cut hole gradually.
In some embodiments of the present invention, at least 3 second cut holes are provided, and a plurality of the second cut holes are arranged in a regular polygon shape; the first cut hole is positioned at the center point of the regular polygon formed by the second cut holes.
In some embodiments of the present invention, the number of the second cut holes is 6.
In some embodiments of the present invention, an auxiliary cut hole is disposed between the first cut hole and the second cut hole, and at least 3 auxiliary cut holes are disposed.
In some embodiments of the present invention, the auxiliary cut holes are arranged in a regular polygon, and the regular polygon formed by the auxiliary cut holes is arranged in a staggered manner with respect to the regular polygon formed by the second cut holes.
In some embodiments of the present invention, a distance between the auxiliary cut hole and the first cut hole is half of a distance between the second cut hole and the first cut hole.
In some embodiments of the present invention, the auxiliary cut hole is disposed perpendicular to the blasting surface.
In some embodiments of the present invention, the third cut holes are uniformly arranged.
Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:
the embodiment of the application provides a cut hole structure for tunnel blasting and tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole. The worker arranges a first cut hole and a second cut hole around the first cut hole in the first blasting area, the first cut hole provides a proper expansion space for blasting, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom, so that the blasting force of the first cut hole acts outwards, and the rock at the blasting point is easily thrown out after being crushed; after the first cut hole is blasted, a larger blasting space is provided for blasting of the second cut hole, and the second cut hole is blasted after the first cut hole is blasted, so that the blasting resistance and vibration can be effectively reduced; simultaneously, the staff explodes first blasting region and second blasting region in proper order, because first blasting region is blasted earlier, provides face the free face for the blasting in follow-up second blasting region, has effectively slowed down the produced vibration in second blasting region.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a cross-sectional view of a tunnel according to embodiment 1 of the present invention;
fig. 2 is a sectional view of a first cut hole of embodiment 1 of the present invention;
fig. 3 is a sectional view of a first cut hole according to embodiment 2 of the present invention;
fig. 4 is a cross-sectional view of a tunnel according to embodiment 4 of the present invention;
fig. 5 is a cross-sectional view of an auxiliary cut hole according to embodiment 5 of the present invention.
An icon: 1. a first blast area; 2. a second blasting area; 3. a first cut hole; 4. a second cut hole; 5. a main cut hole; 6. a secondary cut hole; 7. auxiliary cut holes; 8. a third cut hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, it is only for convenience of description of the present invention and simplification of description, but not for indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, the present invention should not be construed as being limited thereby. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "set", "mounted", "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
Referring to fig. 1-2, fig. 1 is a cross-sectional view of a tunnel according to the present embodiment; fig. 2 is a sectional view of the first cut hole of the present embodiment.
The embodiment provides a slotted hole structure for tunnel blasting tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole.
The worker arranges a first cut hole and a second cut hole around the first cut hole in the first blasting area, the first cut hole provides a proper expansion space for blasting, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom, so that the blasting force of the first cut hole acts outwards, and the rock at the blasting point is easily thrown out after being crushed; after the first cut hole is blasted, a larger blasting space is provided for blasting of the second cut hole, and the second cut hole is blasted after the first cut hole is blasted, so that the blasting resistance and vibration can be effectively reduced; simultaneously, the staff explodes first blasting region and second blasting region in proper order, because first blasting region is blasted earlier, provides face the free face for the blasting in follow-up second blasting region, has effectively slowed down the produced vibration in second blasting region.
It can be understood that, the staff makes the tunnel blasting process begin from the first undermined hole through setting up the detonator of different sections number, through the second undermined hole that week side set up, explodes first blasting region and second blasting region from inside to outside in proper order, can reduce the blasting vibration effectively through blasting in batches.
Example 2
Referring to fig. 2, fig. 2 is a cross-sectional view of the first cut hole of the present embodiment.
The embodiment provides a slotted hole structure for tunnel blasting tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises a first cut hole, a second cut hole is arranged on the periphery of the first cut hole, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole. This example is substantially the same as example 1, and the main differences are as follows: the first cut hole comprises a main cut hole and an auxiliary cut hole, the main cut hole is vertically arranged, and the auxiliary cut hole is obliquely arranged from the hole opening to the hole bottom to one side gradually far away from the main cut hole. The perpendicular main cut hole that sets up and the vice cut hole that inclines set up are convenient for the staff to punch, and the vice cut hole that inclines set up carries out the component with the explosive force that the blasting produced, and the vice cut hole that inclines makes the broken stone of blasting better from blasting department by throwing out, avoids the stone to block up and influences blasting efficiency.
In some embodiments of the present invention, the second cut holes are inclined from the bottom of the hole to the opening, and are inclined to a side away from the first cut holes gradually. The second cut hole that sets up in the slope cooperates vice cut hole better throws out the stone when the blasting.
Example 3
The embodiment provides a cut hole structure used in tunnel blasting and tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises a first cut hole, a second cut hole is arranged on the periphery of the first cut hole, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole; the first cut hole comprises a main cut hole and an auxiliary cut hole, the main cut hole is vertically arranged, and the auxiliary cut hole is obliquely arranged from the hole opening to the hole bottom to one side away from the main cut hole; the second cut holes are obliquely arranged from the hole bottom to the hole opening to one side away from the first cut holes gradually. This example is substantially the same as example 1, and the main difference is that: at least 3 second cut holes are formed, and the second cut holes are arranged in a regular polygon shape; the first cut hole is positioned at the center point of the regular polygon formed by the second cut holes. A plurality of second undercuts that regular polygon set up have formed evenly distributed's blasting point, the explosive force that the evenly distributed blasting produced that can be fine.
In some embodiments of the present invention, the second cut holes are provided with 6. 6 second cut hole is the hexagon and sets up in first cut hole week side, and its second cut hole forms regular triangle with first cut hole each other, and the blasting point of treating that from inside to outside blasting can be fine destroys, effectively increases blasting efficiency.
Example 4
Referring to fig. 4, fig. 4 is a cross-sectional view of the tunnel according to the present embodiment.
The embodiment provides a slotted hole structure for tunnel blasting tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole; the first cut hole comprises a main cut hole and an auxiliary cut hole, the main cut hole is vertically arranged, and the auxiliary cut hole is obliquely arranged from the hole opening to the hole bottom to one side gradually far away from the main cut hole; the second cut holes are obliquely arranged from the hole bottom to the hole opening and are obliquely arranged towards one side away from the first cut holes; at least 3 second cut holes are formed, and the second cut holes are arranged in a regular polygon shape; the first cut hole is positioned at the center point of a regular polygon formed by the second cut holes; the number of the second cut holes is 6. This example is substantially the same as example 1, and the main differences are as follows: auxiliary cut holes are arranged between the first cut holes and the second cut holes, and at least 3 auxiliary cut holes are arranged. It can be understood that the number of the auxiliary cut holes corresponds to the number of the second cut holes, so that the blasting is more uniform; meanwhile, the auxiliary cut holes can perform auxiliary blasting cracks on the first cut holes and the second cut holes, and the overall blasting resistance of the rock body is reduced.
In some embodiments of the present invention, the plurality of auxiliary cut holes are arranged in a regular polygon, and the regular polygon formed by the auxiliary cut holes is arranged in a staggered manner with respect to the regular polygon formed by the second cut holes. The staggered auxiliary cut holes and the second cut holes avoid the imbalance of the explosive force.
Example 5
Referring to fig. 5, fig. 5 is a cross-sectional view of the auxiliary cut holes of the present embodiment.
The embodiment provides a slotted hole structure for tunnel blasting tunneling engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole; the first cut hole comprises a main cut hole and an auxiliary cut hole, the main cut hole is vertically arranged, and the auxiliary cut hole is obliquely arranged from the hole opening to the hole bottom to one side gradually far away from the main cut hole; the second cut holes are obliquely arranged from the hole bottom to the hole opening and are obliquely arranged towards one side away from the first cut holes; at least 3 second cut holes are arranged, and the plurality of second cut holes are arranged in a regular polygon shape; the first cut hole is positioned at the center point of the regular polygon formed by the second cut holes; 6 second cut holes are formed; auxiliary cut holes are arranged between the first cut holes and the second cut holes, and at least 3 auxiliary cut holes are arranged; the auxiliary cut holes are arranged in a regular polygon shape, and the regular polygon formed by the auxiliary cut holes and the regular polygon formed by the second cut holes are arranged in a staggered mode. This example is substantially the same as example 1, and the main difference is that: the distance between the auxiliary cut hole and the first cut hole is half of the distance between the second cut hole and the first cut hole. The first cut holes, the auxiliary cut holes and the second cut holes which are arranged at intervals effectively increase the blasting efficiency. The auxiliary cut holes are arranged perpendicular to the blasting surface, so that pre-cracking can be uniformly performed on the rock body during blasting, and the blasting effect is better when the first cut holes and the second cut holes are blasted.
In some embodiments of the present invention, the third cut holes are uniformly arranged. The third cut holes are uniformly arranged in the second blasting area, and after the first blasting area is blasted, the second blasting area is blasted to enlarge the blasting surface.
It can be understood that, due to the arrangement of the auxiliary cut holes and the second cut holes, the blasting pressure of the first cut holes is smaller; specifically, the apertures of the main cut holes are 28-33 mm, the smaller apertures enable workers to cut the holes more conveniently, and although the loading amount is smaller, the explosive force generated by the holes is enough to crush rock masses; in this embodiment, the depth of the cut hole is 2.5m to 3.5m.
To sum up, the embodiment of the utility model provides a cut hole structure for tunnel blasting excavation engineering, which comprises a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole. The worker arranges a first cut hole and a second cut hole around the first cut hole in the first blasting area, the first cut hole provides a proper expansion space for blasting, and the hole wall of the first cut hole is gradually far away from the central line of the hole from the hole opening to the hole bottom, so that the blasting force of the first cut hole acts outwards, and the rock at the blasting point is easily thrown out after being crushed; after the first cut hole is blasted, a larger blasting space is provided for blasting of the second cut hole, and the second cut hole is blasted after the first cut hole is blasted, so that the blasting resistance and vibration can be effectively reduced; simultaneously, the staff explodes first blasting region and second blasting region in proper order, because first blasting region is blasted earlier, provides facing the free face for the blasting in follow-up second blasting region, has effectively slowed down the produced vibration in second blasting region.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cut hole structure used in tunnel blasting tunneling engineering is characterized by comprising a blasting area surface, wherein the blasting area surface is provided with a first blasting area and a second blasting area, and the first blasting area is arranged in the center of the second blasting area; the first blasting area is provided with a main cut hole group, the main cut hole group comprises first cut holes, second cut holes are arranged on the periphery sides of the first cut holes, and the hole walls of the first cut holes are gradually far away from the central line of the hole from the hole opening to the hole bottom; the second blasting area is provided with a third cut hole.
2. A cut hole structure for use in tunnel blast driving construction according to claim 1, wherein said first cut holes include main cut holes and sub cut holes, said main cut holes are vertically arranged, said sub cut holes are obliquely arranged from the opening toward the hole bottom toward the side gradually distant from the main cut holes.
3. A cut hole structure for use in tunnel blasting excavation work according to claim 2, wherein the second cut holes are provided obliquely from the hole bottom toward the hole opening to a side gradually distant from the first cut holes.
4. A structure of cut holes for tunnel blasting driving engineering according to claim 3, wherein at least 3 of the second cut holes are provided, and a plurality of the second cut holes are arranged in a regular polygon shape; the first cut hole is located at the center point of a regular polygon formed by the second cut holes.
5. A slotted hole structure for use in tunnel blasting excavation work according to claim 4, characterized in that the second slotted hole is provided with 6.
6. A slotted hole structure for use in tunnel blasting excavation engineering according to claim 4, wherein auxiliary slotted holes are provided between the first slotted hole and the second slotted hole, and at least 3 auxiliary slotted holes are provided.
7. A slotted hole structure for use in tunnel blasting excavation work according to claim 6, wherein a plurality of the auxiliary slotted holes are arranged in a regular polygon, and the regular polygon of the auxiliary slotted holes is arranged to be staggered with respect to the regular polygon of the second slotted holes.
8. A cut hole structure for use in tunnel blasting excavation work according to claim 7, wherein a pitch between the auxiliary cut hole and the first cut hole is half a pitch between the second cut hole and the first cut hole.
9. A slotted hole structure for use in tunnel blasting excavation work according to claim 8, characterized in that the auxiliary slotted holes are arranged perpendicular to the blasting face.
10. A slotted hole structure for use in tunnel blasting excavation work according to claim 1, characterized in that the third slotted holes are uniformly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221656940.2U CN217582122U (en) | 2022-06-25 | 2022-06-25 | Cut hole structure for tunnel blasting tunneling engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221656940.2U CN217582122U (en) | 2022-06-25 | 2022-06-25 | Cut hole structure for tunnel blasting tunneling engineering |
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| CN217582122U true CN217582122U (en) | 2022-10-14 |
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| CN202221656940.2U Active CN217582122U (en) | 2022-06-25 | 2022-06-25 | Cut hole structure for tunnel blasting tunneling engineering |
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2022
- 2022-06-25 CN CN202221656940.2U patent/CN217582122U/en active Active
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