Geological radar antenna support for advanced detection of coal mine driving working face

Abstract

The utility model discloses a geological radar antenna support for advanced detection of a coal mine driving face, which comprises a transmitting antenna support, a receiving antenna support, a horizontal support rod horizontally arranged between the transmitting antenna support and the receiving antenna support, and two ends of the horizontal support rod are fixedly connected with the transmitting antenna support and the receiving antenna support respectively; the distance measuring instrument is mounted in the middle of the horizontal supporting rod, is equal to the geological radar transmitting antenna and the geological radar receiving antenna in distance and is used for measuring the distance from the central positions of the geological radar transmitting antenna and the geological radar receiving antenna to the side wall of the roadway; further, the geologic structure under the roadway ground can be conveniently measured for multiple times at equal intervals along the section of the roadway; according to the utility model, the moving distance of the transmitting antenna support and the receiving antenna support can be measured in real time through the laser range finders, measuring point positions do not need to be arranged in advance during underground detection, and the distance between the midpoints of the transmitting antenna support and the receiving antenna support and the side wall of a roadway can be directly measured in real time.

Description

Technical Field

[0001] This utility model belongs to the field of ground-penetrating radar antenna supports, and in particular relates to a ground-penetrating radar antenna support for advanced detection of coal mine tunneling faces. Background Technology

[0002] The main purpose of advance detection at coal mine tunneling faces is to understand the occurrence of coal and rock strata, gas geological conditions, and hydrogeological conditions ahead. Through advance detection, combined with short-distance detection verification, geological data can be collected, thus providing important geological information for subsequent mining operations.

[0003] Ground penetrating radar (GPR) is a geophysical exploration instrument that uses high-frequency electromagnetic waves to detect underground targets and geological phenomena. Its basic structure mainly includes the following parts: the transmitting section consists of a transmitting antenna and a transmitter; the receiving section consists of a receiving antenna and a receiver; and the control and processing section is responsible for analyzing and processing the received signals and information.

[0004] The coal mine tunneling face is a relatively flat vertical cross-section of the roadway. In actual detection, the ground-penetrating radar transmitting and receiving antennas need to work close to the tunneling face, moving point by point along a straight line to detect below the roadway surface. However, it is necessary to lay out survey lines on the tunneling face in advance and mark the positions of the survey points according to the spacing between them. The conventional method is to use tape measures and spray paint for manual marking. During data acquisition, the data acquisition personnel observe the position of the survey points with the naked eye and mark the position of the survey points into the radar data. Since the survey line layout and data acquisition cannot be carried out simultaneously, the data acquisition personnel need to enter the tunneling face twice. This reduces the data acquisition efficiency, prolongs the working time of the data acquisition personnel on the tunneling face, increases safety risks, and most importantly, the data acquired in this way is very inaccurate due to the addition of human factors. Utility Model Content

[0005] The purpose of this invention is to provide a geological radar antenna support for advanced detection of coal mine tunneling faces, so as to solve the problems of low acquisition efficiency and high safety risks caused by the serial operation of geological radar advanced detection survey line layout and data acquisition in coal mine tunneling faces.

[0006] This utility model adopts the following technical solution: a geological radar antenna support for advanced detection of coal mine tunneling faces, comprising:

[0007] The transmitting antenna support is vertically installed, and a ground-penetrating radar transmitting antenna is fixedly connected to its lower end;

[0008] The receiving antenna support is vertical and opposite to the transmitting antenna support, and a ground-penetrating radar receiving antenna is fixedly connected to its lower end;

[0009] A horizontal support rod is horizontally installed between the transmitting antenna bracket and the receiving antenna bracket, with its two ends fixedly connected to the transmitting antenna bracket and the receiving antenna bracket, respectively.

[0010] The rangefinder is installed in the middle of the horizontal support rod, at an equal distance from the ground-penetrating radar transmitting antenna and the ground-penetrating radar receiving antenna. It is used to determine the distance from the center position of the ground-penetrating radar transmitting antenna and the ground-penetrating radar receiving antenna to the side wall of the tunnel, thereby facilitating multiple measurements of the geological structure below the tunnel surface at equal intervals along the tunnel cross-section.

[0011] Furthermore, the horizontal support rod is a telescopic support rod.

[0012] Furthermore, it also includes:

[0013] The processing module has a preset interval for receiving the measured distance from the rangefinder in real time, and sends a prompt signal when the difference between the current measured distance and the previous measured distance is equal to the preset interval.

[0014] Furthermore, it also includes a prompting module, used to receive prompting signals from the processing module and perform voice broadcasting.

[0015] Furthermore, both the transmitting antenna support and the receiving antenna support are "n"-shaped structures with openings facing downwards, and their upper ends are used to grip the entire support.

[0016] Also includes:

[0017] Two support rods are horizontally positioned inside the openings of the transmitting antenna bracket and the receiving antenna bracket, respectively. Their two ends are fixedly connected to the two legs of the corresponding transmitting antenna bracket and receiving antenna bracket, respectively. The middle parts of the two support rods are fixedly connected to the two ends of the horizontal support rod.

[0018] The beneficial effects of this utility model are:

[0019] This invention uses a laser rangefinder to measure the moving distance of the transmitting antenna support and the receiving antenna support in real time. During underground exploration, it is not necessary to set up the measuring points in advance. It can directly measure the distance between the midpoint of the transmitting antenna support and the receiving antenna support and the sidewall of the roadway in real time, which can greatly improve the data acquisition efficiency and reduce the working time of the data acquisition personnel at the tunneling face.

[0020] The laser rangefinder in this invention is an intrinsically safe laser rangefinder suitable for the special environment of coal mines. Its electrical parameters during operation meet the explosion-proof requirements of underground coal mines. After the measured distance of the laser rangefinder is sent to the processing module, the processing module calculates and sends a prompt signal to the prompt module when the difference between the current measured distance and the previous measured distance is equal to the predetermined distance. This prompt module then broadcasts the information via voice, thereby greatly improving the measurement speed and accuracy.

[0021] The transmitting antenna bracket and receiving antenna bracket of this utility model are height-adjustable, which can be used by data collection personnel of different heights. They are easy to operate, simple to disassemble, and easy to carry underground. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] The components include: 1. Transmitting antenna support; 2. Ground penetrating radar transmitting antenna; 3. Receiving antenna support; 4. Ground penetrating radar receiving antenna; 5. Horizontal support rod; 6. Rangefinder; 7. Support rod. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] This utility model discloses a geological radar antenna support for advanced detection of coal mine tunneling faces, such as... Figure 1 As shown, it includes: transmitting antenna bracket 1, receiving antenna bracket 3, horizontal support rod 5, and rangefinder 6.

[0026] The transmitting antenna support 1 is set vertically, and the lower end of the transmitting antenna support 1 is fixedly connected to the ground-penetrating radar transmitting antenna 2.

[0027] The receiving antenna bracket 3 is vertically positioned and opposite to the transmitting antenna bracket 1. The lower end of the receiving antenna bracket 3 is fixedly connected to the ground-penetrating radar receiving antenna 4.

[0028] A horizontal support rod 5 is horizontally installed between the transmitting antenna bracket 1 and the receiving antenna bracket 3, with both ends of the horizontal support rod 5 fixedly connected to the transmitting antenna bracket 1 and the receiving antenna bracket 3, respectively.

[0029] The rangefinder 6 is installed in the middle of the horizontal support rod 5 and is equidistant from the ground-penetrating radar transmitting antenna 2 and the ground-penetrating radar receiving antenna 4. The rangefinder 6 is used to determine the distance from the center position of the ground-penetrating radar transmitting antenna 2 and the ground-penetrating radar receiving antenna 4 to the side wall of the tunnel, thereby facilitating multiple measurements of the geological structure below the tunnel surface at equal intervals along the tunnel cross section.

[0030] Horizontal support rod 5 is a telescopic support rod.

[0031] This utility model also includes: a processing module, which has a preset interval. The processing module is used to receive the measured distance of the rangefinder 6 in real time, and send a prompt signal when the difference between the current measured distance and the previous measured distance is equal to the preset interval.

[0032] This utility model also includes: a prompting module, which is used to receive prompting signals from the processing module and perform voice broadcasting.

[0033] Both the transmitting antenna bracket 1 and the receiving antenna bracket 3 are "n"-shaped structures with openings facing downwards. The upper ends of the transmitting antenna bracket 1 and the receiving antenna bracket 3 are used to grip the entire bracket.

[0034] This utility model also includes: two support rods 7, which are horizontally arranged and located inside the openings of the transmitting antenna bracket 1 and the receiving antenna bracket 3, respectively. The two ends of the two support rods 7 are fixedly connected to the two legs of the corresponding transmitting antenna bracket 1 and receiving antenna bracket 3, respectively, and the middle portions of the two support rods 7 are fixedly connected to the two ends of the horizontal support rod 5.

[0035] The method of using this utility model is as follows:

[0036] Place the entire support frame on the tunnel floor, ensuring the rear ends of the ground-penetrating radar transmitting antenna 2 and receiving antenna 4 are pressed against the working face. Then, continuously move the entire support frame along the working face. During this movement, the rangefinder 6 will continuously measure the distance between the support frame and the right or left sidewall. When the measured distance equals the preset spacing within the processing module, start the ground-penetrating radar transmitter and transmit a signal through the ground-penetrating radar transmitting antenna 2. Receive the signal using the ground-penetrating radar receiving antenna 4 and transmit it to the receiver for processing. Repeat this process until the underground structure of the entire cross-section or the entire tunnel has been detected.

Claims

1. A ground-penetrating radar antenna support for advanced detection in coal mine tunneling faces, characterized in that, include: The transmitting antenna support (1) is set vertically, and the lower end of it is fixedly connected to the ground-penetrating radar transmitting antenna (2); The receiving antenna bracket (3) is vertical and opposite to the transmitting antenna bracket (1), and its lower end is fixedly connected to the ground-penetrating radar receiving antenna (4); A horizontal support rod (5) is horizontally positioned between the transmitting antenna bracket (1) and the receiving antenna bracket (3), with its two ends fixedly connected to the transmitting antenna bracket (1) and the receiving antenna bracket (3) respectively. The rangefinder (6) is installed in the middle of the horizontal support rod (5) and at the same distance from the ground-penetrating radar transmitting antenna (2) and the ground-penetrating radar receiving antenna (4). It is used to determine the distance from the center position of the ground-penetrating radar transmitting antenna (2) and the ground-penetrating radar receiving antenna (4) to the side wall of the tunnel, so as to facilitate multiple measurements of the geological structure below the tunnel surface at equal intervals along the tunnel cross section.

2. The ground-penetrating radar antenna support for advanced detection of coal mine tunneling faces according to claim 1, characterized in that, The horizontal support rod (5) is a telescopic support rod.

3. The ground-penetrating radar antenna support for advanced detection of coal mine tunneling faces according to claim 1, characterized in that, Also includes: The processing module has a preset interval for receiving the measured distance from the rangefinder (6) in real time, and sends a prompt signal when the difference between the current measured distance and the previous measured distance is equal to the preset interval.

4. The ground-penetrating radar antenna support for advanced detection of coal mine tunneling faces according to claim 3, characterized in that, Also includes: The prompt module is used to receive prompt signals from the processing module and broadcast them via voice.

5. The ground-penetrating radar antenna support for advanced detection of coal mine tunneling faces according to claim 1, characterized in that, Both the transmitting antenna bracket (1) and the receiving antenna bracket (3) are "n"-shaped structures with openings facing downwards, and their upper ends are used to grip the entire bracket. Also includes: Two support rods (7) are horizontally positioned and located in the openings of the transmitting antenna bracket (1) and the receiving antenna bracket (3), respectively. Their two ends are fixedly connected to the two legs of the corresponding transmitting antenna bracket (1) and receiving antenna bracket (3), respectively. The middle parts of the two support rods (7) are fixedly connected to the two ends of the horizontal support rod (5).

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