Isolated tunnel blasting dust spraying dust suppression device

Abstract

This utility model relates to the field of tunnel engineering technology, specifically to an isolated tunnel blasting dust spraying dust suppression device. It includes a mobile vehicle, a water supply pipe, multiple nozzles, a dust detector, an air curtain isolation device, and a controller. The water supply pipe includes a vertical water pipe fixed to the mobile vehicle and multiple horizontal water pipes connected to the vertical water pipe. The multiple horizontal water pipes are arranged vertically at intervals along the vertical water pipe, with their lengths gradually increasing from bottom to top. The vertical water pipe is connected to an external water inlet pipe. The multiple nozzles are installed at intervals along the horizontal water pipes. The air curtain isolation device is installed at the end of the tunnel construction area furthest from the tunnel face. This utility model solves the technical problem of low efficiency in existing tunnel construction dust suppression methods, achieving rapid response and precise spraying of dust, significantly improving dust suppression efficiency, shortening construction downtime, accelerating construction progress, and reducing water waste.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering technology, specifically to an isolated tunnel blasting dust spraying dust suppression device. Background Technology

[0002] Drill-and-blast method is a common excavation technique used in tunnel construction. However, this method generates a large amount of dust, which seriously affects the construction environment and the health of workers. Dust not only reduces visibility but can also cause respiratory illnesses and even pose a risk of dust explosions. Therefore, effectively controlling and reducing the dust concentration generated by blasting is an urgent problem to be solved in tunnel construction.

[0003] Traditional dust suppression methods, such as ventilation and dry dust collection, suffer from low efficiency and high costs. With increasing demands for construction safety and environmental protection, developing a more efficient and economical dust suppression technology is of paramount importance. Utility Model Content

[0004] The purpose of this utility model is to provide an isolated tunnel blasting dust spraying dust suppression device to solve the technical problem of low efficiency in existing tunnel construction dust removal methods. The specific technical solution is as follows:

[0005] This utility model provides an isolated tunnel blasting dust spraying dust suppression device, including a mobile vehicle, a water supply pipe, multiple nozzles, a dust detector, an air curtain isolation device, and a controller. The water supply pipe includes a vertical water pipe fixed on the mobile vehicle and multiple horizontal water pipes connected to the vertical water pipe. The multiple horizontal water pipes are arranged vertically at intervals on the vertical water pipe, and their lengths gradually increase from bottom to top. The vertical water pipe is connected to an external water inlet pipe. The multiple nozzles are installed at intervals on the horizontal water pipes. The air curtain isolation device is installed at the end of the tunnel construction area away from the tunnel face. The mobile vehicle is equipped with a drive device, and the drive device, the dust detector, the multiple nozzles, and the air curtain isolation device are connected to the controller.

[0006] A further improvement of this utility model of an isolated tunnel blasting dust spraying dust suppression device is that the vertical water pipe includes multiple vertical sections and multiple first sleeves, with two adjacent vertical sections connected by the first sleeves, and the horizontal water pipe connected to the vertical section.

[0007] A further improvement of this utility model of an isolated tunnel blasting dust spraying dust suppression device is that the horizontal water pipe includes multiple horizontal sections and multiple second sleeves, two adjacent horizontal sections are connected through the second sleeves, the horizontal section is connected to the vertical section, and the nozzle is connected to the horizontal section.

[0008] A further improvement of this utility model of an isolated tunnel blasting dust spraying device is that the number of dust detectors is multiple, and the multiple dust detectors are arranged at intervals along the axial direction of the tunnel.

[0009] A further improvement of this utility model of an isolated tunnel blasting dust spraying dust suppression device is that the vertical water pipe is provided with a water inlet connection section, which is connected to the external water inlet pipe.

[0010] A further improvement of this utility model of an isolated tunnel blasting dust spraying device is that the water supply pipe is made of stainless steel.

[0011] The application of the technical solution of this utility model has the following beneficial effects:

[0012] This utility model relates to an isolated tunnel blasting dust spraying device. A mobile vehicle, controlled by a controller, directly sprays dust onto areas with high dust concentrations, solving the problem of low efficiency in existing tunnel construction dust suppression methods. Through intelligent control and precise dust suppression, this device achieves rapid response and accurate spraying of dust, significantly improving dust suppression efficiency, shortening construction downtime, accelerating construction progress, reducing water waste, optimizing water resource utilization efficiency, and meeting environmental protection requirements for energy conservation and emission reduction.

[0013] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the isolated tunnel blasting dust spraying dust suppression device of this utility model;

[0016] Figure 2 This is a side view of the isolated tunnel blasting dust spraying dust suppression device of this utility model;

[0017] Figure 3 This is a front view of the isolated tunnel blasting dust spraying dust suppression device of this utility model.

[0018] The components include: 1. Tunnel face; 2. Nozzle; 3. Mobile vehicle; 4. Water supply pipe; 5. Water inlet connection section; 6. Installation sleeve; 7. Dust detector; and 8. Air curtain isolation device. Detailed Implementation

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0020] See Figures 1-3 As shown, an isolated tunnel blasting dust spraying dust suppression device includes a mobile vehicle 3, a water supply pipe 4, multiple nozzles 2, a dust detector 7, an air curtain isolation device 8, and a controller. The water supply pipe 4 includes a vertical water pipe fixed on the mobile vehicle 3 and multiple horizontal water pipes connected to the vertical water pipe. The multiple horizontal water pipes are arranged vertically at intervals on the vertical water pipe, and their lengths gradually increase from bottom to top. The vertical water pipe is connected to an external water inlet pipe. The multiple nozzles 2 are installed at intervals on the horizontal water pipes. The air curtain isolation device 8 is installed at the end of the tunnel construction area away from the tunnel face 1. The mobile vehicle 3 is equipped with a drive device. The drive device, the dust detector 7, the multiple nozzles 2, and the air curtain isolation device 8 are connected to the controller.

[0021] The dust detector 7 can monitor the dust concentration at different locations during tunnel blasting in real time and accurately transmit the real-time data to the controller. The mobile vehicle 3 includes a base plate and at least three wheels mounted on the bottom of the base plate. A drive unit is mounted on the bottom of the base plate and drives the at least three wheels to rotate. The number of drive units can be adjusted according to the number of wheels, and the drive unit can be an electric motor. The nozzle 2 is equipped with a valve to adjust the spray size. After receiving instructions from the controller, the mobile vehicle 3 automatically and quickly moves to an area with high dust concentration. Simultaneously, the nozzle 2 sprays droplets at different speeds according to the controller's instructions via the valve to adapt to different dust suppression requirements. Vertical water pipes are fixed to the mobile vehicle 3 via threaded connections, ensuring structural stability and reliable connections. The air curtain isolation device 8 can form an effective isolation barrier during blasting to prevent dust from spreading outwards.

[0022] The controller of this device can automatically adjust the movement trajectory of the mobile vehicle 3 and the spraying speed of the nozzles 2 based on real-time dust concentration data, achieving precise dust spraying. Simultaneously, the air curtain isolation device 8 forms an effective isolation barrier the instant the blast dust is released, confining the escaped dust within the tunnel face 1. Through the continuous action of the nozzles 2 on the mobile vehicle 3, the dust concentration is rapidly reduced to a safe standard, creating a healthy and clean working environment for construction personnel. After rapid and precise dust suppression, construction personnel continue their work, moving the device to the next working position for continued operation. This device features real-time monitoring, automatic control, and precise dust suppression, effectively reducing the impact of dust on the environment outside the tunnel, ensuring the health and safety of construction personnel, and significantly improving construction efficiency. This is achieved through the coordinated operation of the controller and the device.

[0023] The water supply pipe 4 is equipped with multiple installation sleeves 6, including a first sleeve and a second sleeve.

[0024] Preferably, the vertical water pipe includes multiple vertical sections and multiple first sleeves. Adjacent vertical sections are connected through the first sleeves, and the horizontal water pipe is connected to the vertical sections. The connection method between the vertical sections and the first sleeves can be adjusted according to the height of the tunnel, which can adapt to tunnels of different heights and ensure the continuity and uniformity of water flow.

[0025] Preferably, the horizontal water pipe includes multiple horizontal sections and multiple second sleeves. Adjacent horizontal sections are connected by the second sleeves. The horizontal sections are connected to the vertical sections, and the nozzle 2 is connected to the horizontal sections. The connection method between the horizontal sections and the second sleeves can be adjusted according to the width of the tunnel, which can adapt to tunnels of different widths and ensure the continuity and uniformity of the water flow.

[0026] Preferably, there are multiple dust detectors 7, which are arranged at intervals along the axial direction of the tunnel to monitor the dust content at different locations.

[0027] Preferably, the vertical water pipe is provided with a water inlet connection section 5, which is connected to the external water inlet pipe to ensure a sufficient water supply.

[0028] Preferably, the water pipe 4 is made of stainless steel, which ensures the overall stability of the device while preventing pipe corrosion. The vertical and horizontal water pipes form a robust rigid frame, and the stainless steel water pipes are connected to the nozzle 2 by anchor bolts, further enhancing the stability and reliability of the overall structure.

[0029] The main factors affecting the dust reduction efficiency of nozzle 2 droplets include dust concentration, relative velocity and relative particle size between droplets and dust particles, and the effective area of ​​the droplets. The expression for the amount of droplets collected per unit distance and unit time is shown in Equation 1):

[0030] δ M =f(v,η) g ,C,A,q,S,V) / V 1);

[0031] Where: δ M η represents the dustfall rate per unit length per unit time, in g·m / t; f is the functional relationship; v is the relative velocity between the droplets and the dust, in m / s; η g C represents the collection efficiency of a single droplet; C represents the dust concentration, g / m³. 3 A represents the cross-sectional area of ​​the capture zone, in meters. 2 q represents the volumetric water content, m 3 / m 3 S is the cross-sectional area of ​​the droplet, in meters. 2 V is the droplet volume, m3 .

[0032] The collection efficiency η of a single fog droplet g The expression is shown in Equation 2):

[0033]

[0034] Where: Stokes number s t It can be calculated as d p ρ represents the particle size of the dust particles, in meters (m); p Dust density, kg / m³ 3 μ g D is the gas density, Pa·s; c denoted as droplet diameter, in meters (m).

[0035] The change in dust mass concentration is shown in Figure 3).

[0036]

[0037] Where: dc is the change in dust mass concentration, g / m³ 3 δM is the amount of dust settling per unit length per unit time, in g / (m·s); dx is the length of the infinitesimal element, in m; A is the cross-sectional area of ​​the tunnel, in m². 2 .

[0038] This device can monitor and capture changes in dust concentration in real time during blasting using a blasting dust detector 7, and transmit the monitoring data to the controller instantly. Based on the real-time feedback of dust concentration, the controller automatically adjusts the movement path of the mobile vehicle 3 and the spray rate of the nozzles 2 to achieve precise dust control and effective dust suppression. Simultaneously, the air curtain isolation device 8 responds quickly, forming a robust isolation barrier that effectively confines the escaped dust within the working face area. Thanks to the continuous action of the nozzles 2 on the mobile vehicle 3, the dust concentration is rapidly reduced to a safe level, creating a healthy and clean working space for construction personnel. After the rapid and precise dust suppression operation is completed, construction personnel can immediately resume work, while the device flexibly moves to the next work point to continue the dust suppression task.

[0039] This utility model relates to an isolated tunnel blasting dust spraying device. A mobile vehicle, controlled by a controller, directly sprays dust onto areas with high dust concentrations, solving the problem of low efficiency in existing tunnel construction dust control methods. Through intelligent control and precise dust suppression, this device achieves rapid response and accurate spraying of dust, significantly improving dust suppression efficiency, shortening construction downtime, accelerating construction progress, reducing water waste, and optimizing water resource utilization efficiency. It meets energy conservation and emission reduction requirements. The use of an air curtain isolation device effectively limits the spread of dust, reducing pollution to the external environment of the tunnel, helping to protect the surrounding ecological environment and minimize the impact on nearby residents. The mobile vehicle allows the spraying device to be flexibly moved to different working positions, adapting to changing construction environments and improving the equipment's applicability and flexibility.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An isolated tunnel blasting dust spray dust falling device, characterized in that, The system includes a mobile vehicle (3), a water supply pipe (4), multiple nozzles (2), a dust detector (7), an air curtain isolation device (8), and a controller. The water supply pipe (4) includes a vertical water pipe fixed on the mobile vehicle (3) and multiple horizontal water pipes connected to the vertical water pipe. The multiple horizontal water pipes are arranged vertically at intervals on the vertical water pipe, and their length gradually increases from bottom to top. The vertical water pipe is connected to an external water inlet pipe. The multiple nozzles (2) are installed at intervals on the horizontal water pipe. The air curtain isolation device (8) is installed at the end of the tunnel construction area away from the tunnel face (1). The mobile vehicle (3) is equipped with a drive device. The drive device, the dust detector (7), the multiple nozzles (2), and the air curtain isolation device (8) are connected to the controller.

2. The dust spray dust-settling device for isolated tunnel blasting according to claim 1, characterized in that, The vertical water pipe includes multiple vertical sections and multiple first sleeves. Two adjacent vertical sections are connected through the first sleeves, and the horizontal water pipe is connected to the vertical sections.

3. The dust spray dust-settling device for isolated tunnel blasting according to claim 2, characterized in that, The horizontal water pipe includes multiple horizontal sections and multiple second sleeves. Two adjacent horizontal sections are connected by the second sleeves. The horizontal sections are connected to the vertical sections. The nozzle (2) is connected to the horizontal sections.

4. The dust spray dust-settling device for isolated tunnel blasting according to claim 1, characterized in that, The number of dust detectors (7) is multiple, and the multiple dust detectors (7) are arranged at intervals along the axial direction of the tunnel.

5. The dust spray dust-settling device of the isolated tunnel blasting according to claim 1, characterized in that, The vertical water pipe is provided with a water inlet connection section (5), which is connected to the external water inlet pipe.

6. The dust spray dust-settling device of the isolated tunnel blasting according to claim 1, characterized in that, The water pipe (4) is made of stainless steel.

Images