CN219065766U - Accurate pre-probing equipment for tunnel construction - Google Patents

Abstract

The utility model relates to precise pre-probing equipment for tunnel construction, which comprises a pre-probing host main body and a pre-probing slave main body which are arranged at predetermined intervals; the pre-detection main body and the pre-detection auxiliary body can run in a tunnel to be detected and at least have the movement capability in the rotation direction and the vertical direction; the ground penetrating radar transmitter is arranged on the pre-probing host body; and the ground penetrating radar receiver is arranged on the pre-probing slave machine body. The ground penetrating radar transmitter is matched with the ground penetrating radar receiver. The ground penetrating radar transmitter and the ground penetrating radar receiver are arranged on the two mobile devices, so that the distance between the transmitter and the ground penetrating radar receiver can be conveniently adjusted, and the geological pre-detection distance can be adjusted. The device is provided with a rotating device, can scan the excavation section of the tunnel, and can be converted into detection of the inner surface of the excavated tunnel when needed. The moving device adopts the caterpillar band as a drive, and can be well adapted to different ground surface conditions of tunnel construction sites during moving.

Description

Accurate pre-probing equipment for tunnel construction

Technical Field

The utility model relates to the technical field of ground penetrating radars, in particular to precise pre-probing equipment for tunnel construction.

Background

Along with the rapid development of the economy in China, the construction of infrastructure is continuously advanced, and particularly, a great amount of manpower, material resources and financial resources are input in the aspect of highway construction. Wherein the total mileage of highway construction reaches 16.1 ten thousands of kilometers, and the first place of the world is occupied. However, in the process of constructing the expressway tunnel, due to complex geological conditions, sudden accidents frequently occur, and many difficulties are brought to tunnel construction. Therefore, a scientific and advanced geological prediction method is necessary to effectively and accurately predict and predict the rock mass in front of the tunnel excavation working face and the state thereof, and predict the possible bad or special geological problems and the physical properties of the rock mass in front in advance in the construction stage, so that corresponding suggestions are provided for the front construction, and the working efficiency of the tunnel construction and the life safety of constructors are ensured.

At present, most types of tunnel ground penetrating radars adopt conventional means, and accurate advanced prediction of geological physical properties and different geology is difficult to realize. For example, the utility model of Chinese patent CN217007676U discloses a tunnel detection ground penetrating radar device, which consists of a mobile device, a box body, a lifting plate, a ground penetrating radar antenna device and the like, wherein the detection depth and the detection range are adjusted through the lifting plate, so that the ground penetrating radar antenna device has a wider detection range, and the area where a geological environment monitoring target is located can be detected; chinese patent CN217278973U discloses a ground penetrating radar device convenient to move, the device comprises movable seat, adjustment mechanism etc. through changing the position of adjusting sleeve and detecting radar body, thereby can adjust the height of ground penetrating radar, avoid subaerial debris to cause the influence to the ground penetrating radar. However, all the above patents use a single source as the basis for the pre-probing of the tunnel condition, and the pre-probing direction is downward, so that the pre-probing of the inner surface of the whole tunnel cannot be realized.

Disclosure of Invention

The utility model aims to: the utility model provides a tunnel construction accurate pre-detection equipment to solve the above-mentioned problem that prior art exists.

The technical scheme is as follows: the tunnel construction accurate pre-detection equipment comprises a pre-detection main machine body, a pre-detection auxiliary machine body, a ground detection radar transmitter and a ground detection radar receiver, wherein the pre-detection main machine body and the pre-detection auxiliary machine body are arranged at predetermined intervals.

The pre-detection main body and the pre-detection auxiliary body can run in a tunnel to be detected and at least have the movement capability in the rotation direction and the vertical direction; the ground penetrating radar transmitter is arranged on the pre-probing host body; the ground penetrating radar receiver is arranged on the pre-probing slave main body; the ground penetrating radar transmitter is matched with the ground penetrating radar receiver. The slave machine can realize the pre-detection of geological conditions with different depths by adjusting the distance between the slave machine and the master machine.

In a further embodiment, the pre-probing master body and the pre-probing slave body are identical in structure and comprise a vehicle body, a rotating base, a lifting rod, a plurality of driving wheels and a plurality of tracks. The rotating base is arranged on the vehicle body; the lifting rod is arranged on the rotating base, and the optimal working height can be achieved through lifting. The driving wheels are arranged on two sides of the vehicle body, and the driving wheels on the two sides realize the movement and rotation of the device through the same-direction rotation or reverse rotation. The driving wheels on each side are connected through the crawler belt, and the ground penetrating radar transmitters are driven to rotate through rotation, so that the geological conditions in different directions are detected.

In a further embodiment, the ground penetrating radar transmitter and the ground penetrating radar receiver are mounted on the lifting bar. The ground penetrating radar transmitter and the ground penetrating radar receiver have the same structure and comprise a rotary hinged support, a driving motor, a controller and an annular magnetic dipole antenna. The rotary hinged support is fixed on the lifting rod; the driving motor is arranged at one side of the rotary hinged support; the controller is connected with an output shaft of the driving motor; the annular magnetic dipole antenna is connected with the controller.

In a further embodiment, the controller has a battery mounted therein. The controller is provided with a digital display screen, a power indicator, a switch and an ultrasonic module, so that a core module of the ground penetrating radar transmitter is formed together, and the transmission and the reception of electromagnetic waves and ultrasonic waves are realized.

The beneficial effects are that:

1. the ground penetrating radar transmitter and the ground penetrating radar receiver are arranged on the two mobile devices, so that the distance between the transmitter and the ground penetrating radar receiver can be conveniently adjusted, and the geological pre-detection distance can be adjusted.

2. The device is provided with a rotating device, can scan the excavation section of the tunnel, and can be converted into detection of the inner surface of the excavated tunnel when needed.

3. The moving device adopts the caterpillar band as a drive, and can be well adapted to different ground surface conditions of tunnel construction sites during moving.

4. In the working process of the device, the moving distance, the lifting height and the like can be controlled remotely, the safety of workers is ensured, and the labor intensity is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a host machine of a tunnel construction accurate pre-detection device.

Fig. 2 is a partial enlarged view of a ground penetrating radar transmitter.

Fig. 3 is a schematic structural diagram of a tunnel construction accurate pre-detection equipment slave machine.

The reference numerals in the drawings are as follows: the ground penetrating radar device comprises a driving wheel 1, a crawler 2, a vehicle body 3, a rotating base 4, a lifting rod 5, a ground penetrating radar transmitter 6, a driving motor 601, a rotating hinged support 602, an annular magnetic dipole antenna 603, a controller 604, a digital display 605, a power indicator 606, a switch 607, an ultrasonic module 608 and a ground penetrating radar receiver 7.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

The present embodiment proposes a tunnel construction accurate pre-probing apparatus including a pre-probing host body and a pre-probing slave body placed at predetermined intervals, a ground penetrating radar transmitter 6, and a ground penetrating radar receiver 7.

Fig. 1 is a main unit of a tunnel construction accurate pre-detection device, and has the following structural characteristics: four driving wheels 1 are connected to two sides of a vehicle body 3 through shafts, and the driving wheels 1 are connected with a crawler belt 2 to jointly form a driving system of a main machine of the tunnel construction accurate pre-detection equipment. The driving wheels 1 on the two sides realize the movement and rotation of the device by rotating in the same direction or in opposite directions. The rotating base 4 is connected with the vehicle body 3, and the ground penetrating radar transmitter 6 is driven to rotate through rotation, so that the geological conditions in different directions are detected. The lifting rod 5 is connected to the rotating base 4, and can reach the optimal working height through lifting.

Fig. 2 is a partial enlarged view of the ground penetrating radar transmitter 6, and has the following structural features: the rotary hinged support 602 is connected with the lifting rod 5 and the controller 604, and is driven to rotate by the driving motor 601, so that detection of electromagnetic waves and ultrasonic waves in different directions is realized. The controller 604 is fixedly connected with the annular magnetic dipole antenna 603, and a storage battery, a control circuit and the like are arranged in the controller. The controller 604 is provided with a digital display 605, a power indicator 606, a switch 607 and an ultrasonic module 608, which together form a core module of the ground penetrating radar transmitter, so as to realize the transmission and the reception of electromagnetic waves and ultrasonic waves.

Fig. 3 is a tunnel construction accurate pre-detection equipment slave machine, which has a structure similar to that of a host machine, except that a ground penetrating radar receiver 7 is installed so as to cooperate with the ground penetrating radar transmitter 6 to cooperate. The slave machine can realize the pre-detection of geological conditions with different depths by adjusting the distance between the slave machine and the master machine.

The working flow of the tunnel construction accurate pre-detection equipment is as follows: the traditional geological safety forecasting method mostly adopts a single forecasting method for detection, the forecasting result has larger deviation from the actual excavation disclosure condition, the forecasting accuracy is not high, meanwhile, the detection result of most instruments has multiple solutions, more interference sources exist in the tunnel, and the influence on the detection result is larger. Therefore, by combining a plurality of detection means and fully utilizing the advantages and disadvantages of the detection means, the integrated comprehensive prediction system can greatly improve the detection precision, reduce misjudgment and missed judgment on bad geological bodies and has important significance on tunnel safety construction. In conclusion, the multi-source data fusion platform is established by combining multi-source data such as an ultrasonic detector and a geological radar, and prediction of front geological safety is achieved. When the device works, the annular magnetic dipole antenna and the ultrasonic module work cooperatively, the extracted data are analyzed and fused, the geological physical properties are predicted, the geological conditions of the front water system, geological fissures, rock strata and the like are clarified, and the problem of inaccurate single data source prediction is solved.

The utility model can adjust the height and the orientation of the ground penetrating radar transmitter and the ground penetrating radar receiver by adopting the rotating base, the lifting rod and the rotating hinged support, and can switch among various detection modes, including (1) detecting the geological condition of the earth to be excavated in front of the tunnel, and ensuring that the tunnel construction is carried out smoothly; (2) and comprehensively detecting the two lining cracks of the excavated tunnel, and providing scientific basis for subsequent crack disease treatment work.

As described above, although the present utility model has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the utility model itself. Various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (3)

1. Accurate preliminary probing equipment of tunnel construction, its characterized in that: the device comprises a pre-probing host body and a pre-probing slave body which are arranged at a preset interval; the distance between the pre-detection main body and the pre-detection auxiliary body is adjustable;

the pre-detection main body and the pre-detection auxiliary body can run in a tunnel to be detected and at least have the motion capability of a rotation direction and a vertical direction;

the structure of the pre-detection main body is the same as that of the pre-detection auxiliary body, and at least the pre-detection main body comprises:

a vehicle body;

a rotating base mounted on the body;

the lifting rod is arranged on the rotating base;

a plurality of driving wheels disposed at both sides of the vehicle body; the driving wheels on each side are connected through a crawler belt;

further comprises:

the ground penetrating radar transmitter is arranged on the pre-probing host main body;

the ground penetrating radar receiver is arranged on the pre-probing slave machine main body;

the ground penetrating radar transmitter is matched with the ground penetrating radar receiver; the height and the orientation of the ground penetrating radar transmitter and the ground penetrating radar receiver are adjustable;

wherein the ground penetrating radar transmitter and the ground penetrating radar receiver are arranged on the lifting rod; the ground penetrating radar transmitter and the ground penetrating radar receiver have the same structure, and the method comprises the following steps:

the rotary hinged support is fixed on the lifting rod;

the driving motor is arranged on one side of the rotary hinged support;

the controller is connected with an output shaft of the driving motor;

and the annular magnetic dipole antenna is connected with the controller.

2. The tunnel construction precision pre-detection device according to claim 1, wherein a storage battery is installed inside the controller.

3. The tunnel construction accurate pre-detection device according to claim 1, wherein the controller is provided with a digital display screen, a power indicator lamp, a switch and an ultrasonic module.

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