CN113356215A - Cutting construction method and cutting device for rock platform of underground factory building rock wall crane beam - Google Patents
Cutting construction method and cutting device for rock platform of underground factory building rock wall crane beam Download PDFInfo
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- CN113356215A CN113356215A CN202110686870.9A CN202110686870A CN113356215A CN 113356215 A CN113356215 A CN 113356215A CN 202110686870 A CN202110686870 A CN 202110686870A CN 113356215 A CN113356215 A CN 113356215A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Abstract
The invention relates to a cutting construction method and a cutting device for a rock platform of a crane beam of a rock wall of an underground factory building. The rock wall crane beam and rock platform cutting device is applied to cutting and excavating construction of the rock wall crane beam and rock platform of an underground factory building, when the rock wall crane beam and rock platform is cut, the rock wall crane beam cutting device is installed on leveling concrete of a lower excavation surface, the control system controls the cutting device to walk and cut, the excavating construction efficiency of the rock wall crane beam and rock platform is improved to a great extent, construction interference caused by blasting is reduced, loose rings and over-excavation and over-filling caused by geological reasons are avoided, and the safety and stability of the rock wall crane beam and rock platform are ensured.
Description
Technical Field
The invention relates to the technical field of hydraulic and hydroelectric engineering, in particular to a cutting construction method and a cutting device for a rock platform of a crane beam of a rock wall of an underground factory building.
Background
In the construction of water conservancy and hydropower engineering, underground plants are all designed with rock wall crane beams, and large bridge cranes are arranged on the crane beams to carry out civil engineering concrete construction and the installation and maintenance of metal knots and electromechanical equipment. The rock wall crane beam firmly anchors the reinforced concrete beam on the rock wall by using the long anchor rod for injecting mortar, one part of the beam body is supported on the inclined plane rockbed, the whole load of the bridge crane is transmitted to the rockbed of the rock wall beam through the long anchor rod and the friction force on the contact surface of the reinforced concrete beam and the rock, and the compressive stress is borne by the compression anchor rod and the inclined plane of the rockbed, so that the bearing capacity of surrounding rock is fully utilized. The excavation molding quality and the rock mass stability of the rock wall crane beam bedrock are the foundation for the safe operation of the crane beam, so the excavation construction of the plant rock wall crane beam is the important factor of underground engineering. The rock wall crane beam bedrock is relatively large in stress and high in blasting control requirement, the excavating requirement of the rock wall crane beam bedrock is small in overexcavation, and the blasting loosening range is minimum. With the maturity and development of the prior art, all the rock platform construction of the rock wall crane beam adopts the vertical and oblique bidirectional control blasting method excavation method, and usually in the rock wall crane beam excavation construction, due to strict requirement of particle vibration control, the loose circle needs to be controlled within 20cm, and the overexcavation is less than 10 cm. The construction method adopts a conventional bidirectional controlled blasting method, the excavation quality of the rock wall beam is high, the rock mass loosening ring is tightly controlled, the drilling and blasting method construction meets the requirements and has high difficulty, the construction method is greatly influenced by the quality of surrounding rock geological conditions, the stability of rock mass at the position of the rock wall beam can not be influenced well, the interference with the rock wall crane beam anchor rod and concrete construction is large, the construction can not be carried out synchronously, the construction efficiency is low, more manpower is input, certain resource waste is caused, the blasting method is uncontrollable by the influence factor of the surrounding rock geological conditions, the reinforcing anchor rod needs to be driven and the reinforcing concrete needs to be poured in the case of large geological overexcavation, the secondary construction cost is increased, the phenomenon that the loosening ring exceeds the standard easily occurs, and the reinforcing treatment is needed. Therefore, how to overcome the defects of the prior art is a problem to be solved urgently in the technical field of hydraulic and hydroelectric engineering at present.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a cutting construction method and a cutting device for a rock platform of a rock wall crane beam of an underground factory building, which overcome the defects of overproof loose rings and overlarge overexcavation caused by blasting excavation of the rock platform of the rock wall crane beam and furthest ensure the stability of a reserved rock mass at the position of the rock platform of the rock wall crane beam.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a cutting construction method of a rock platform of a crane beam of a rock wall of an underground factory building,
1) forming an upper vertical excavation surface when excavating the upper part of the factory building, and excavating and removing the upper horizontal excavation surface and the lower excavation surface of the excavation surface on the outer side of the rock wall beam by using an explosion method;
2) leveling the lower excavation surface by using concrete, and laying a traveling track to enable the rock wall crane beam and the rock platform cutting device to travel on the track;
3) the rock wall crane beam and rock platform cutting device is perpendicular to the saw blade to cut to form a rock wall beam vertical surface, the inclined surface is cut by the rock wall crane beam and rock platform cutting device to obtain a rock wall beam inclined surface, the vertical surface and the inclined surface are subjected to front-back staggered synchronous construction, and the rock wall crane beam and rock platform cutting work of an underground workshop is completed.
The utility model provides an underground factory building cliff crane roof rock-bench cutting device, it includes: the cutting device comprises a fixed frame, a vertical cutting mechanism and an oblique cutting mechanism; the vertical cutting mechanism is fixed on the middle upper part of the cutting device fixing frame and comprises a vertical cutting saw blade, a vertical cutting transmission device, a vertical cutting motor and a vertical cutting lifting device, wherein the vertical cutting saw blade is connected with the vertical cutting transmission device which is connected with the vertical cutting motor; the oblique cutting mechanism comprises an oblique cutting saw blade, an oblique cutting transmission device, an oblique cutting motor, an oblique cutting lifting device, an oblique cutting fixed cross beam and an oblique cutting fixed oblique beam, the oblique cutting mechanism is fixed on the oblique cutting fixed cross beam and the oblique cutting fixed oblique beam at the lower part of a cutting device fixed frame, the oblique cutting saw blade is connected with the oblique cutting transmission device, the oblique cutting transmission device is connected with the oblique cutting motor, the oblique cutting mechanism is also connected with the oblique cutting lifting device, and the oblique cutting lifting device is fixed on the oblique cutting fixed oblique beam;
the control system is connected with the vertical cutting motor and the oblique cutting motor through cables, and the cutting device fixing frame is arranged on the leveling concrete through the walking track.
Furthermore, the vertical cutting lifting device is a screw type lifting device and is controlled by an intelligent data system.
Furthermore, the oblique cutting lifting device is a chain type lifting device and is controlled by an intelligent data system.
The cutting device fixing frame is formed by processing section steel into a square frame with the length multiplied by the width multiplied by the height multiplied by 13000mm multiplied by 6000mm multiplied by 12000mm, wherein the vertical component is I30a I-shaped steel, and the horizontal and oblique components are formed by bolt connection of' 30a double-back channel steel.
The walking track adopts a P23 type light rail, and the light rail is fixed on the leveling concrete by expansion bolts.
The walking of the vertical cutting mechanism and the oblique cutting mechanism is controlled by an intelligent system to advance at a constant speed by an automatic driving walking device, and the automatic driving intelligent walking device is customized by a manufacturer.
The vertical cutting saw blade and the oblique cutting saw blade are alloy steel saw blades, the saw teeth of the saw blades are provided with tool bits, the diameter of the vertical surface is phi 4500mm, and the diameter of the inclined surface is phi 4000 mm.
The rock wall crane beam and rock platform cutting device is applied to cutting and excavating construction of the rock wall crane beam and rock platform of an underground factory building, when the rock wall crane beam and rock platform is cut, the rock wall crane beam cutting device is installed on leveling concrete of a lower excavation surface, the control system controls the cutting device to walk and cut, the excavating construction efficiency of the rock wall crane beam and rock platform is improved to a great extent, construction interference caused by blasting is reduced, loose rings and over-excavation and over-filling caused by geological reasons are avoided, and the safety and stability of the rock wall crane beam and rock platform are ensured.
Compared with the prior art, the invention has the beneficial effects that:
1. the device of the invention improves the existing bidirectional control blasting method for the excavation of the rock wall crane beam bedrock into the method of synchronously cutting the rock wall crane beam bedrock by adopting the two-direction staggered distance of the cutting device of the rock wall crane beam bedrock, thereby overcoming the problems of low blasting construction efficiency, large labor intensity of personnel, large construction interference, time and labor consumption, unstable surrounding rock body caused by the loose circle of surrounding rock generated by blasting, over-excavation and over-filling caused by geological reasons and the like, reducing the personnel investment and labor intensity, overcoming the defects of increasing the stability of the surrounding rock of the rock wall crane beam bedrock by blasting the loose circle, improving the excavation speed of the rock wall crane beam bedrock, greatly enhancing the bearing capacity of the rock wall beam bedrock, avoiding the interference caused by blasting construction, realizing no over-excavation, avoiding the risk of secondary cost caused by over-excavation of geological reasons, saving the construction cost, improving the construction efficiency by 40 percent compared with the existing rock wall crane beam excavation construction, the loose circle of the surrounding rock and the over-excavation of the geology are avoided, the over-excavation is reduced to 0 from the original 10cm, and better economic and social benefits can be generated.
2. The invention belongs to the field of foundation changes in the technical field of hydraulic and hydroelectric engineering, greatly promotes the progress of the excavation of the rock wall crane beam bedrock of the hydraulic and hydroelectric engineering in the aspects of process and efficiency, and has no relevant report in the construction literature of the excavation of the rock wall crane beam bedrock of underground powerhouses at home and abroad.
3. The invention is not applied to the construction of hydroelectric engineering at present, aims to reduce the personnel investment and the labor intensity of constructors, avoids blasting construction interference on the excavation construction of the rock wall crane beam bedrock, overcomes the surrounding rock blasting loose circle and geological over-excavation and over-filling, improves the efficiency, accelerates the construction progress and has higher application value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a cutting device for a rock platform of a rock wall crane beam of an underground workshop and a construction method.
Fig. 2 is a side view of the cutting device for the bedrock of the underground powerhouse rock wall crane beam.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Figure 4 is a top view of the rock wall crane beam bedstand cutting apparatus.
Wherein, 1, a rock wall crane beam bedrock; 2. a vertical face of a rock wall beam; 3. an upper vertical excavation surface; 4. leveling the concrete; 5. excavating a lower part; 6. a traveling rail; 7. rock wall crane beam bedrock cutting device: 71. a cutting device fixing frame; 72. the vertical cutting mechanism comprises: 722. a vertical cutting motor; 723. a vertical cutting drive; 724. vertically cutting and lifting the fixed beam; 724. vertically cutting and lifting the fixed beam; 725. a vertical cutting hoist; 73. oblique cutting mechanism: 731. obliquely cutting the saw blade; 732. a slant cutting motor; 733. an oblique cutting transmission device; 734. obliquely cutting the fixed cross beam; 735. obliquely cutting the fixed oblique beam; 736. a slant cutting and lifting device; 74. a control system; a traction system 75; 8. an upper inflection point of the rock wall beam; 9. a rock wall beam slope; 10. excavating a surface on the outer side of the rock platform; 11. horizontally excavating the upper part of the pit; 12. And (5) hoisting equipment.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. All the electric appliances, the lifting equipment and the saw blades are conventional products which can be obtained by purchasing and are not marked by manufacturers.
Example 1:
as shown in FIGS. 1 to 4, a cutting construction method for a rock platform of a crane beam of a rock wall of an underground factory building,
1) forming an upper vertical excavation surface 3 during excavation on the upper part of the factory building, and excavating by using an explosion method to form an upper horizontal excavation surface 11 and a lower excavation surface 5 of an excavation surface on the outer side of the rock wall beam;
2) leveling the lower excavation surface by using concrete, and laying a traveling track 6 to enable a rock wall crane beam and a rock platform cutting device 7 to travel on the track;
3) the rock wall crane beam and rock platform cutting device is used for cutting by a vertical saw blade to form a vertical surface 2 of the rock wall beam, the inclined surface is cut by the inclined surface saw blade of the rock wall crane beam and rock platform cutting device to form an inclined surface 9 of the rock wall beam, an excavation surface 10 is arranged on the outer side of the rock platform,
the vertical excavation face 3 of upper portion on the upper portion of cliff roof beam perpendicular 2, 15cm in 2 outsides of perpendicular, cliff roof beam perpendicular 2, inclined plane 9 and cliff roof outside excavation face 10, upper portion horizontal excavation face 11 constitutes cliff crane roof beam bedrock 1, cliff roof beam perpendicular 2 and inclined plane 9, cliff roof beam inflection point 8 utilizes cliff crane roof cutting device 7 to cut and forms, cliff roof beam perpendicular 2 and inclined plane 9 form cliff roof beam inflection point 8 after the cutting, upper portion horizontal excavation face 11 forms after the excavation of cavern upper portion, cliff roof outside excavation face 10 forms the vertical excavation of back and obtains at cliff roof beam perpendicular 11, in 2 insides of cliff roof beam perpendicular, the synchronous construction of perpendicular and inclined plane front and back stagger, accomplish underground factory building cliff crane roof beam bedrock cutting work.
The cutting device 7 for the bedrock of the rock wall crane beam used for the construction consists of a cutting device fixing frame 71, a vertical cutting mechanism 72 fixed on the cutting device frame 71, an oblique cutting mechanism 73, a control system 74 for controlling the cutting device and a traction system 75 for driving the cutting device; the vertical cutting mechanism 72 is fixed on the middle upper part of the cutting device fixing frame 71, the vertical cutting mechanism 72 comprises a vertical cutting saw blade 721, a vertical cutting transmission device 722 and a vertical cutting motor 723, the vertical cutting saw blade is connected with the vertical cutting transmission device 722, the vertical cutting transmission device 722 is connected with the vertical cutting motor 723, the vertical cutting mechanism is also connected with a vertical cutting lifting device 725, and the vertical cutting lifting device is fixed on the vertical cutting lifting fixing beam 724 and is completely vertically cut by sliding and lifting on the vertical cutting lifting fixing beam 724. The oblique cutting mechanism 73 is fixed on the oblique cutting fixed beam 734 and the oblique cutting fixed beam 735 at the lower part of the cutting device fixed frame 71, and comprises an oblique cutting saw blade 731, an oblique cutting transmission device 732, and an oblique cutting motor 733; the oblique cutting saw blade is connected with the oblique cutting transmission device, the oblique cutting transmission device is connected with the oblique cutting motor, the oblique cutting mechanism is further connected with the oblique cutting lifting device 736, the oblique cutting lifting device 736 is in a chain type and is fixed on the oblique cutting fixed oblique beam 735, and oblique cutting is completed by oblique lifting movement of the oblique cutting lifting device 736. The control system 74 is connected with the vertical cutting motor 72 and the cutting motor of the oblique cutting mechanism 73 through cables, and the cutting device fixing frame 71 is placed on the leveling concrete 4 (the leveling concrete is plain concrete with the priority designation C20 normal) through the traveling rail 6.
Preferably, the vertical cutting elevator 725 uses a screw elevator (existing equipment) and is controlled using an intelligent data system.
Preferably, the slant cutting lifting device 736 is a chain type lifting device (existing equipment) and is controlled by an intelligent data system.
Preferably, the walking track 6 is a P23 type light track, and the light track is fixed on the leveling concrete by expansion bolts.
Preferably, the walking of the vertical cutting mechanism and the walking of the oblique cutting mechanism are controlled by an automatic driving walking device, an intelligent system is arranged to control the uniform speed to advance, and the automatic driving intelligent walking device is customized by a manufacturer.
Preferably, the vertical cutting saw blade and the oblique cutting saw blade are alloy steel saw blades, the saw teeth of the saw blades are provided with tool bits, the diameter of the vertical surface is phi 4500mm, and the diameter of the inclined surface is phi 4000 mm.
Preferably, the cutting device fixing frame 71 is a square frame which is processed by section steel and has the length multiplied by the width multiplied by 13000mm multiplied by 6000mm multiplied by 12000mm, the vertical component is I30a I-shaped steel, the horizontal and oblique components are formed by [ "30 a double-back channel steel bolt connection, the horizontal components have three layers in the upper, middle and lower, the layer spacing is 5600mm and 6400mm respectively from the lower to the higher, the components are connected by bolts through welding connecting plates and are made into a square shape, the oblique components and the horizontal direction form 65.0 degrees, and platforms are arranged on each layer of the frame for personnel to operate and use.
The fixed frame installation is 200mm apart from the outer excavation face of abutment roof beam, installs perpendicular face cutting motor, vertical cut transmission, vertical cut saw bit in proper order after the frame erection is accomplished, installs the V-belt, installs screw hoisting device, and vertical cut saw bit 721 is no less than 15cm apart from the vertical excavation face in upper portion as operating space. Then an oblique cutting motor and an oblique transmission device are installed, an oblique cutting saw blade is installed, a triangular belt is installed, a chain type lifting device is installed, and a cutter head is arranged on each saw tooth of the vertical cutting saw blade and the oblique cutting saw blade. And finally, the system is arranged on a traction system and a control system, the control system is connected to each motor through a cable, and each motor is provided with a control switch.
The vertical cutting driving device 723 fixes a transmission shaft with a belt pulley on the vertical cutting lifting fixing beam 724 by using a bolt, is connected to a belt rotating wheel on a vertical cutting motor by using 4 triangular belts, and is driven by the vertical cutting motor, and is the conventional equipment.
The oblique cutting transmission device 733 fixes a transmission shaft of a belt wheel on oblique cutting lifting fixing beams 734 at two sides by bolts, and is driven by an oblique cutting motor by connecting a chain with a rotating gear of the oblique cutting motor, which is the existing equipment.
The vertical cutting motor 722 is a three-phase asynchronous motor, and is fixed on the vertical cutting lifting fixing beam 724 by bolts, and the work of the vertical cutting device is controlled by a control system.
The vertical cutting motor 732 is a three-phase asynchronous motor, and the motor is fixed on the oblique cutting lifting fixing beam 734 by bolts and the oblique cutting device is controlled to work by a control system.
The traction system 75 is an existing device, wherein a motor with a gear box drives a transmission chain and a steel roller, and a control system controls and drives the rock wall crane beam and the rock platform cutting device to automatically walk.
Before use, excavating a vertical upper excavation face, an outer side excavation face and a lower excavation face to form a rock wall crane beam bedrock, simultaneously machining and debugging the rock wall crane beam bedrock cutting device in an out-of-tunnel factory, leveling rock ballast on the lower horizontal excavation face by using a backhoe, rolling, pouring leveling concrete, laying a walking track on the leveling concrete face, arranging a foundation bolt for fixation, transporting the rock wall crane beam bedrock cutting device to the in-tunnel site assembly and debugging, cutting a vertical face to an inflection point position by using a screw type lifting device, cutting an inclined face cutting saw blade to the inflection point position of the rock wall crane beam bedrock by using a chain type lifting device, starting cutting construction of the rock wall crane beam bedrock by using a self-driven walking device to horizontally walk, continuously cutting the rock wall crane beam bedrock to form a rock wall beam, arranging a crane for fixation on the bedrock when cutting, the cut crane is directly hung on the dump truck to be transported away. The invention is not only suitable for cutting the bedrock of the rock wall crane beam, but also suitable for the construction of high straight side walls of underground caverns, bedrock of foundation pits, cutting slope surfaces of open cut edges and the like.
The rock wall crane beam and rock platform cutting device is applied to cutting and excavating construction of the rock wall crane beam and rock platform of an underground factory building, when the rock wall crane beam and rock platform is cut, the rock wall crane beam cutting device is installed on leveling concrete of a lower excavation surface, the control system controls the cutting device to walk and cut, the excavating construction efficiency of the rock wall crane beam and rock platform is improved to a great extent, construction interference caused by blasting is reduced, loose rings and over-excavation and over-filling caused by geological reasons are avoided, and the safety and stability of the rock wall crane beam and rock platform are ensured.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A cutting construction method for a rock platform of a crane beam of a rock wall of an underground factory building is characterized by comprising the following steps:
1) forming an upper vertical excavation surface when excavating the upper part of the factory building, and excavating and removing the upper horizontal excavation surface and the lower excavation surface of the excavation surface on the outer side of the rock wall beam by using an explosion method;
2) leveling the lower excavation surface by using concrete, and laying a traveling track to enable the rock wall crane beam and the rock platform cutting device to travel on the track;
3) the rock wall crane beam and rock platform cutting device is perpendicular to the saw blade to cut to form a rock wall beam vertical surface, the inclined surface is cut by the rock wall crane beam and rock platform cutting device to obtain a rock wall beam inclined surface, the vertical surface and the inclined surface are subjected to front-back staggered synchronous construction, and the rock wall crane beam and rock platform cutting work of an underground workshop is completed.
2. A cutting device for cutting construction of the underground powerhouse rock wall crane beam bedrock of claim 1, characterized in that: it includes: the cutting device comprises a fixed frame, a vertical cutting mechanism and an oblique cutting mechanism; the vertical cutting mechanism is fixed on the middle upper part of the cutting device fixing frame and comprises a vertical cutting saw blade, a vertical cutting transmission device, a vertical cutting motor and a vertical cutting lifting device, wherein the vertical cutting saw blade is connected with the vertical cutting transmission device which is connected with the vertical cutting motor; the oblique cutting mechanism comprises an oblique cutting saw blade, an oblique cutting transmission device, an oblique cutting motor, an oblique cutting lifting device, an oblique cutting fixed cross beam and an oblique cutting fixed oblique beam, the oblique cutting mechanism is fixed on the oblique cutting fixed cross beam and the oblique cutting fixed oblique beam at the lower part of a cutting device fixed frame, the oblique cutting saw blade is connected with the oblique cutting transmission device, the oblique cutting transmission device is connected with the oblique cutting motor, the oblique cutting mechanism is also connected with the oblique cutting lifting device, and the oblique cutting lifting device is fixed on the oblique cutting fixed oblique beam;
the control system is connected with the vertical cutting motor and the oblique cutting motor through cables, and the cutting device fixing frame is arranged on the leveling concrete through the walking track.
3. The cutting device of claim 2, wherein: the vertical cutting lifting device is a screw type lifting device and is controlled by an intelligent data system.
4. The cutting device of claim 2, wherein: the oblique cutting lifting device is a chain type lifting device and is controlled by an intelligent data system.
5. The cutting device of claim 2, wherein: the cutting device fixing frame is manufactured into a square frame with the length multiplied by the width multiplied by the height multiplied by 13000mm multiplied by 6000mm multiplied by 12000mm by section steel, the vertical component is I30a I-shaped steel, and the horizontal and oblique components are formed by bolt connection of '30 a double-back channel steel'.
6. The cutting device of claim 2, wherein: the walking track adopts a P23 type light rail, and the light rail is fixed on the leveling concrete by expansion bolts.
7. The cutting device of claim 2, wherein: the vertical cutting saw blade and the oblique cutting saw blade are alloy steel saw blades, the saw teeth of the saw blades are provided with tool bits, the diameter of the vertical surface is phi 4500mm, and the diameter of the inclined surface is phi 4000 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686870.9A CN113356215A (en) | 2021-06-21 | 2021-06-21 | Cutting construction method and cutting device for rock platform of underground factory building rock wall crane beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110686870.9A CN113356215A (en) | 2021-06-21 | 2021-06-21 | Cutting construction method and cutting device for rock platform of underground factory building rock wall crane beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810097A (en) * | 2022-05-27 | 2022-07-29 | 中国电建集团成都勘测设计研究院有限公司 | Method for determining maximum fracture angle of brittle rock body in high or ultrahigh ground stress area |
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2021
- 2021-06-21 CN CN202110686870.9A patent/CN113356215A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810097A (en) * | 2022-05-27 | 2022-07-29 | 中国电建集团成都勘测设计研究院有限公司 | Method for determining maximum fracture angle of brittle rock body in high or ultrahigh ground stress area |
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