Rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method and intelligent equipment

Abstract

The invention discloses rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation intelligent equipment which comprises a milling excavator body, a mechanical arm is arranged at the top of the milling excavator body, a motor is fixedly connected to a front arm of the mechanical arm in an embedded mode, and a motor driving shaft penetrates through the front arm of the mechanical arm and is fixedly connected with a driving box. Milling and digging heads correspondingly connected with the driving box are arranged on the two sides of the driving box, an intelligent equipment platform is arranged on the side wall of the milling and digging machine body, and an inverted arch milling and digging intelligent operation system is arranged in the intelligent equipment platform. Compared with the prior art, the method is excellent in over-excavation and under-excavation control, construction cost increase caused by over-excavation and backfilling of concrete is completely avoided, 5-6 cubic meters of concrete and 2200-2700 yuan cost can be saved per cycle on average, meanwhile, the tunnel inverted arch curvature can be effectively guaranteed, and the inverted arch upheaving damage in the tunnel operation period is effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rock tunnel excavation equipment, in particular to a rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method and intelligent equipment. BACKGROUND

[0002] There are two kinds of existing tunnel inverted arch excavation technologies:

[0003] (1) All use blasting excavation, which is the method commonly used in the market. After blasting, excavators and slag cars are used for cleaning. This method performs poorly in overbreak control, resulting in increased cost of backfilling concrete and ineffective guarantee of tunnel inverted arch curvature, deviating from the design intention of inverted arch curvature and failing to effectively prevent inverted arch heaving disease;

[0004] (2) According to the patent network query, the patent number CN202010107898 application file proposes a tunnel inverted arch non-blasting excavation method, which uses a combination of rock cutting machines, drilling machines, splitting rods, and splitting machines for non-blasting excavation of tunnel inverted arches. However, this method is time-consuming and labor-intensive and does not have the value of large-scale promotion. At the same time, in terms of actual effect, the use of splitting machines and splitting rods cannot completely control the overbreak and inverted arch curvature, and secondary backfilling or edge trimming is required, so this method is not used for construction on the market.

[0005] Therefore, we propose to design a rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method and intelligent equipment. SUMMARY

[0006] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0007] To solve the above technical problems, according to one aspect of the present application, the present application provides the following technical scheme:

[0008] A rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation intelligent equipment, comprising a milling excavator main body, a mechanical arm is arranged on the top of the milling excavator main body, a motor is fixedly connected to the front arm of the mechanical arm, a driving shaft of the motor penetrates the front arm of the mechanical arm and is fixedly connected with a driving box, milling heads corresponding to the driving box are arranged on both sides of the driving box, an intelligent equipment platform is arranged on the side wall of the milling excavator main body, and an inverted arch milling intelligent operation system is arranged in the intelligent equipment platform.

[0009] The supporting mechanism is arranged at four corners of the milling excavator body, and comprises four hydraulic rods, and the bottom of the telescopic end of each hydraulic rod is fixedly connected with a supporting leg.

[0010] A rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method comprises the following steps:

[0011] S1: the inverted arch excavation depth and the inverted arch curvature of a tunnel continuous mileage section are input into an inverted arch milling excavation intelligent operation system, wherein the depth and the curvature corresponding to different surrounding rock grades are different, and the intelligent equipment operation system is provided with a positioning system, which can automatically identify the inverted arch excavation depth and the inverted arch curvature corresponding to the surrounding rock grade of the section when moving to the front end of the inverted arch;

[0012] S2: explosives, detonators and other blasting equipment used in the inverted arch controlled blasting are prepared;

[0013] S3: inverted arch blasting hole drilling, explosive loading and initiation are performed;

[0014] S4: the stone is loaded into a vehicle for the first time and transported to a slag field;

[0015] S5: the inverted arch milling excavation intelligent equipment is moved to the cycle inverted arch end, the equipment is started, and the 0.3-meter-thick rock layer reserved in the controlled blasting is milled and profiled according to the pre-input inverted arch excavation depth and inverted arch curvature;

[0016] S6: the stone is loaded into a vehicle for the second time and transported to a slag field;

[0017] S7: after the rock is cleaned, the inverted arch milling excavation intelligent equipment is started again to collect the surface of the rock once, so as to ensure that the inverted arch is not under-excavated;

[0018] S8: inverted arch support is performed.

[0019] As a preferred scheme of the rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method, in S2, the blasting depth is less than the design depth of the inverted arch by 0.3 meters, so as to prevent the range from being overblown due to the explosive charge amount designed according to the original rock properties.

[0020] As a preferred scheme of the rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method, in S4, the equipment for transporting the stone is an excavator and a slag car, so as to facilitate the cleaning of the remaining stone.

[0021] As a preferred scheme of the rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method, in S6, the equipment for transporting the stone is an excavator and a slag car, so as to facilitate the cleaning of the remaining stone.

[0022] Compared with the prior art, the present application has the beneficial effects that:

[0023] In the aspect of over-excavation control, the construction cost increase caused by over-excavation backfill concrete is completely avoided, 5-6 cubic meters of concrete can be saved per cycle on average, 2200-2700 yuan of cost is saved, the tunnel invert curvature can be effectively guaranteed, the invert heaving disease during tunnel operation is effectively prevented, and the work efficiency is greatly improved compared with the non-explosive excavation of the tunnel invert by using a rock cutting machine, a drilling machine, a splitting rod and a splitting machine combination, the excavation process can be advanced by 1.5 hours per cycle on average. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the present application will be described in detail below in combination with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0025] Figure 1 is a milling and digging machine structure schematic diagram of the present application for a rock tunnel invert controlled blasting excavation reserved non-explosive excavation method and intelligent equipment;

[0026] Figure 2 is a support mechanism schematic diagram of the present application for a rock tunnel invert controlled blasting excavation reserved non-explosive excavation method and intelligent equipment;

[0027] Figure 3 is an intelligent equipment platform schematic diagram of the present application for a rock tunnel invert controlled blasting excavation reserved non-explosive excavation method and intelligent equipment.

[0028] Legend: 1, milling and digging machine main body; 2, mechanical arm; 3, motor; 4, drive box; 5, milling and digging head; 6, intelligent equipment platform; 7, support mechanism; 701, hydraulic rod; 702, support foot. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in combination with the drawings.

[0030] Secondly, the present application is described in detail in combination with the schematic diagram. In order to facilitate the description, the cross-sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0032] Please refer to Figures 1-2 The present application provides a rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation intelligent equipment, which comprises a milling and digging machine body 1, a mechanical arm 2 is arranged on the top of the milling and digging machine body 1, a motor 3 is fixedly connected to the forearm of the mechanical arm 2, a driving shaft of the motor 3 penetrates through the forearm of the mechanical arm 2 and is fixedly connected with a driving box 4, and a milling and digging head 5 is arranged on both sides of the driving box 4 in a corresponding connection manner.

[0033] An intelligent equipment platform 6 is arranged on the side wall of the milling and digging machine body 1, and an inverted arch milling and digging intelligent operation system is arranged in the intelligent equipment platform 6.

[0034] In this embodiment, the intelligent equipment platform 6 comprises an equipment box, a touch operation screen is arranged in the equipment box, which is used for manual close-range operation of the milling and digging machine body 1, and a remote control module and a GPS positioning module are arranged inside the equipment box, which are used for remote control of the equipment parameters by the staff and positioning of the specific position of the equipment.

[0035] In the use process, the inverted arch excavation depth and the inverted arch curvature of the tunnel continuous mileage paragraph can be input into the inverted arch milling and digging intelligent equipment operation system, and the system is provided with a positioning system, which can automatically identify the inverted arch excavation depth and the inverted arch curvature corresponding to the surrounding rock grade of the paragraph when moving to the front end of the inverted arch.

[0036] Supporting mechanisms 7 are arranged at the four corners of the milling and digging machine body 1, and each supporting mechanism 7 comprises four hydraulic rods 701, and a supporting leg 702 is fixedly connected to the bottom of the extension end of each hydraulic rod 701.

[0037] A rock tunnel inverted arch controlled blasting excavation reserved non-blasting excavation method comprises the following steps:

[0038] S1: The inverted arch excavation depth and the inverted arch curvature of the tunnel continuous mileage paragraph are input into the inverted arch milling and digging intelligent operation system, wherein the depth and the curvature corresponding to different surrounding rock grades are different, and the intelligent equipment operation system is provided with a positioning system, which can automatically identify the inverted arch excavation depth and the inverted arch curvature corresponding to the surrounding rock grade of the paragraph when moving to the front end of the inverted arch;

[0039] S2: Prepare the blasting materials such as explosives and detonators required for the inverted arch controlled blasting;

[0040] In this embodiment, the blasting depth is less than 0.3 meters of the design depth of the inverted arch, so as to prevent the range overblasting caused by the explosive charge amount designed according to the original rock properties due to the change of the rock properties.

[0041] S3: Inverted arch blasting hole drilling-explosive filling-starting detonation;

[0042] S4: first loading the stone blocks into a vehicle for transfer to the slag field; the equipment for transferring the stone blocks is an excavator and a slag car, which facilitates cleaning of the remaining stone blocks;

[0043] S5: moving the intelligent equipment for milling and excavating inverted arches to the circulating inverted arch end, starting the equipment, and milling and excavating the 0.3-meter-thick rock layer reserved for blasting according to the pre-input inverted arch excavation depth and inverted arch curvature, and correcting the profile;

[0044] S6: second loading the stone blocks into a vehicle for transfer to the slag field; the equipment for transferring the stone blocks is an excavator and a slag car, which facilitates cleaning of the remaining stone blocks;

[0045] S7: after the rock is cleaned, starting the intelligent equipment for milling and excavating inverted arches to mill the surface of the rock again to ensure that the inverted arch is not under-excavated;

[0046] S8: supporting the inverted arch.

[0047] Although the present application has been described with reference to the embodiments above, various improvements can be made thereto and equivalents can be substituted therefor without departing from the scope of the present application. In particular, each of the features disclosed in the embodiments of the present application can be used in any combination unless there is a structural conflict. The combinations of these features are not exhaustively described in the specification only for the purpose of saving space and resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rock tunnel invert control blasting excavation reserved non-blasting excavation intelligent equipment, characterized in that, Including milling excavator body (1), the milling excavator body (1) top is provided with mechanical arm (2), the mechanical arm (2) forearm embedded fixedly connected with motor (3), the motor (3) driving shaft penetrates mechanical arm (2) forearm and is fixedly connected with drive box (4), the drive box (4) both sides are provided with milling head (5) corresponding to the connection of drive box (4), the milling excavator body (1) side wall is provided with intelligent equipment platform (6), the intelligent equipment platform (6) is provided with inverted arch milling excavation intelligent operation system inside; The milling excavator body (1) four corners are provided with supporting mechanism (7), the supporting mechanism (7) includes four hydraulic rods (701), and the telescopic end bottom of four hydraulic rods (701) is fixedly connected with supporting leg (702).

2. The method according to claim 1, wherein, It includes the following steps: S1: the inverted arch milling excavation intelligent operation system is inputted with the inverted arch excavation depth and the inverted arch curvature of the tunnel continuous mileage paragraph, the intelligent equipment operation system is provided with a positioning system, and when moving to the inverted arch front end, the inverted arch excavation depth and the inverted arch curvature corresponding to the surrounding rock grade of the paragraph can be automatically identified; S2: prepare the explosives, detonators and other blasting equipment needed for inverted arch control blasting; S3: inverted arch blasting hole drilling-filling explosives-start detonation; S4: first load the stone into the car and transport it to the slag field; S5: move the inverted arch milling excavation intelligent equipment to the cycle inverted arch end, start the equipment, and mill the 0.3-meter-thick rock layer reserved during control blasting according to the pre-input inverted arch excavation depth and inverted arch curvature, and correct the profile; S6: secondly load the stone into the car and transport it to the slag field; S7: after the rock is cleaned, start the inverted arch milling excavation intelligent equipment to collect the surface of the rock again to ensure that the inverted arch is not under-excavated; S8: support the inverted arch.

3. The method according to claim 2, wherein, In the S2, the blasting depth is less than the inverted arch design depth by 0.3 meters.

4. The method according to claim 1, wherein, In the S4, the equipment for transporting the stone is an excavator and a slag car.

5. The method according to claim 1, wherein, In the S6, the equipment for transporting the stone is an excavator and a slag car.

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