Resistivity imaging characteristic-based drift filling roof contact rate detection device

Abstract

The utility model relates to the technical field of mine filling, and particularly discloses a drift filling roof-uncontacted rate detection device based on resistivity imaging characteristics, which comprises a roof-contacted monitoring rod, a central control device, a detection electrode ring, a signal receiving device, a filling contact sensor and a rotating electrode device, the detection electrode rings are distributed on the front side and the rear side of the roof contact monitoring rod, array electrodes are arranged on the inner walls of the detection electrode rings, current excitation is controlled through the touch switch, the telescopic device is used for adjusting the positions of the detection electrode rings, and the rotating device achieves radial expansion of the electrode rings. The signal receiving device is used for receiving the current emitted by the detection electrode ring; the central control device is used for processing the current signals collected by the signal receiving device in real time, inverting the resistivity difference between the filling body and the rock mass, and inverting to generate a three-dimensional imaging result of the filling roof-contacted area; through cooperative detection of the two electrode rings, the monitoring range is dynamically adjusted, the problems that a traditional method is small in monitoring range and poor in real-time performance are solved, and the accuracy and efficiency of filling roof contact can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of mine backfilling technology, and in particular to a backfilling contact rate detection device based on resistivity imaging technology. Background Technology

[0002] Backfilling mining plays a vital role in mining operations, enabling comprehensive resource utilization, improving mine safety, protecting the environment, and increasing mining efficiency. It is an important means of comprehensive utilization technology and mine safety management. During mining, roof backfilling is a crucial task, as the backfilling rate directly determines the effectiveness of ground pressure control. However, backfilling often presents problems such as the roof exceeding the backfilling area, uneven roof shape, gravity slope, limited observation range, and insufficient real-time monitoring. Because the backfilling status cannot be accurately monitored, and secondary shrinkage of the backfill material after dewatering leads to incomplete roof connection, effective backfilling cannot be achieved, thus creating potential safety hazards.

[0003] Regarding the top contact rate during the filling process, current methods mainly involve improving the filling process, the filling material and its slurry, as well as various devices for monitoring the filling effect, such as monitoring the overflow volume and number of overflows in the downhole filling monitoring signal pipe, and monitoring with buoyancy balls.

[0004] However, the above solutions have many limitations in practical applications, such as difficulty in accurate measurement, limited monitoring range, and insufficient real-time performance. Utility Model Content

[0005] The objective of this application is to provide a device for detecting the unconnected rate of infill in a route based on resistivity imaging characteristics, which is a device for detecting the infill connection rate with high resolution and strong real-time performance.

[0006] To solve the above problems, this application provides a device for detecting the unconnected rate of inlet filling based on resistivity imaging characteristics, including a connection monitoring rod (1). The connection monitoring rod (1) is provided with a first detection electrode ring (31) and a second detection electrode ring (32). The first detection electrode ring (31) and the second detection electrode ring (32) are located on the front and rear sides of the connection monitoring rod (1), respectively. A first signal receiving device (21) is provided above the first detection electrode ring (31). A second signal receiving device (22) is provided between the first detection electrode ring (31) and the second detection electrode ring (32). A telescopic device (5) is provided between the second detection electrode ring (32) and the second signal receiving device (22). A first rotator (41) is provided on the first detection electrode ring (31). A second rotator (42) is provided on the second detection electrode ring (32). A filling contact sensor (6) is provided at the lower end of the second detection electrode ring (32).

[0007] Preferably, the inner walls of the first detection electrode ring (31) and the second detection electrode ring (32) are provided with multiple electrodes, and the first signal receiving device (21) and the second signal receiving device (22) are connected to the electrodes to receive the current emitted by the electrodes.

[0008] This application has the following advantages compared with the prior art:

[0009] This application utilizes the propagation of electric current underground to obtain information about the underground medium by measuring the resistivity changes of underground rock or infill. Two detection electrode rings are positioned for the rock mass and the infill, respectively. Combined with a telescopic device, the two can distinguish between the infill and the rock, effectively detecting the infill connection effect. Compared with traditional methods, the infill connection detection system and method based on resistivity imaging technology has advantages such as wide monitoring range, good real-time performance, and simple operation, which can effectively improve the accuracy and efficiency of infill connection. Attached Figure Description

[0010] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0011] Figure 1 A simplified diagram of the approach filling unconnected rate detection device for resistivity imaging features provided in this application embodiment;

[0012] Figure 2 This is a schematic diagram illustrating the working principle of the electrode array and signal receiving device provided in the embodiments of this application.

[0013] Figure 3 A schematic diagram of the on-site work layout provided for an embodiment of this application;

[0014] Figure 4 A flowchart illustrating the process of an embodiment of this application.

[0015] In the figure: 1-Top monitoring rod, 21-First signal receiving device, 22-Second signal receiving device, 31-First detection electrode ring, 32-Second detection electrode ring, 41-First rotator, 42-Second rotator, 5-Telescopic device, 6-Filling contact sensor. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0017] refer to Figure 1This application provides a resistivity imaging feature-based device for detecting the rate of unconnected filling in a path. The device includes a top-connection monitoring rod 1, a signal receiving device comprising a first signal receiving device 21 and a second signal receiving device 22, a detection electrode ring comprising a first detection electrode ring 31 and a second detection electrode ring 32, a rotating device comprising a first rotator 41 and a second rotator 42, a telescopic device 5, a filling contact sensor 6, and a central control device for control. In this document, "front" refers to the direction towards the filling contact sensor 6, and "rear" refers to the direction towards the first signal receiving device 21.

[0018] To achieve the above objectives, such as Figures 1 to 4 As shown, a device for detecting the unconnected rate of infill material based on resistivity imaging features includes a top-connection monitoring rod 1. A first detection electrode ring 31 and a second detection electrode ring 32 are respectively mounted on the top-connection monitoring rod 1. The current of the first detection electrode ring 31 is mainly used for resistivity imaging of the rock mass structure, and the second detection electrode ring 32 is mainly used for resistivity imaging of the structure surrounding the top plate of the infill material. The first detection electrode ring 31 and the second detection electrode ring 32 are located on the front and rear sides of the top-connection monitoring rod 1, respectively. A first signal receiving device 21 is located above the first detection electrode ring 31, and a second signal receiving device 22 is located between the first detection electrode ring 31 and the second detection electrode ring 32. A telescopic device 5 is located between the second detection electrode ring 32 and the second signal receiving device 22. A first rotator 41 is located on the first detection electrode ring 31, and a second rotator 42 is located on the second detection electrode ring 32. A filling contact sensor 6 is located at the lower end of the second detection electrode ring 32. The first rotator 41 and the second rotator 42 are located at one end of the detection electrode rings, and the radial expansion of the detection electrode rings is controlled by a central control device. Multiple electrodes are disposed on the inner walls of the first detection electrode ring 31 and the second detection electrode ring 32. The first signal receiving device 21 and the second signal receiving device 22 are connected to the electrodes to receive the current emitted by the electrodes. The electrode array is distributed, and a touch switch is controlled by a central control device to control the electrodes to generate current in all directions. The central control device controls the rotation device to rotate the first detection electrode ring 31, and the electrode array at the rear end of the second detection electrode ring 32 is radially expanded, and the diameter range is expanded as needed. The rotation device can control the first detection electrode ring 31 to touch the top plate and the second detection electrode ring 32 to touch the filling material.

[0019] The filling contact sensor 6 is triggered when the filling body makes contact, and the central control device controls the resistivity imaging feature of the incomplete filling rate detection device to work.

[0020] The central control device uses a touch switch to detect the current generated by the electrode array within the electrode ring. This current travels through the surrounding rock or backfill material back to the signal receiving device. By detecting the difference between the electrode ring and the backfill material, the two work together to detect the gap in the roof. The current data is acquired in real time by changing the position of the telescopic rod. This data is processed to calculate the resistivity at different positions of the roof contact monitoring rod 1. The calculated resistivity is transmitted to the central control device, which then calculates the backfill contact rate and the gap area.

[0021] The device includes a roof-connection monitoring rod, a central control unit, a detection electrode ring, a signal receiving device, a filling contact sensor, and a rotating electrode device. The detection electrode ring is distributed on both sides of the roof-connection monitoring rod, and its inner wall is equipped with an array of electrodes. Current excitation is controlled by a touch switch. A telescopic device is used to adjust the position of the detection electrode ring, and a rotating device enables the radial expansion of the electrode ring. The signal receiving device is used to receive the current emitted by the detection electrode ring. The central control unit is used to process the current signal collected by the signal receiving device in real time, invert the resistivity difference between the filling body and the rock mass, and invert to generate a three-dimensional imaging result of the filling roof-connection area. This device solves the problems of small monitoring range and poor real-time performance of traditional methods by using dual electrode rings for collaborative detection and dynamic adjustment of the monitoring range, and can effectively improve the accuracy and efficiency of filling roof-connection.

[0022] It should be noted that the touch switch and other specific structures can all adopt commercially available structures, and will not be described in detail here.

[0023] The technical solutions provided in this application have been described in detail above. While specific examples have been used in this document, further improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A device for detecting the contact rate of a passage filling point based on resistivity imaging characteristics, characterized in that: The device includes a top-mounted monitoring rod (1), on which a first detection electrode ring (31) and a second detection electrode ring (32) are respectively provided. The first detection electrode ring (31) and the second detection electrode ring (32) are located on the front and rear sides of the top-mounted monitoring rod (1), respectively. A first signal receiving device (21) is provided above the first detection electrode ring (31), and a second signal receiving device (22) is provided between the first detection electrode ring (31) and the second detection electrode ring (32). A telescopic device (5) is provided between the second detection electrode ring (32) and the second signal receiving device (22). A first rotator (41) is provided on the first detection electrode ring (31), and a second rotator (42) is provided on the second detection electrode ring (32). A filling contact sensor (6) is provided at the lower end of the second detection electrode ring (32).

2. The approach filling contact rate detection device based on resistivity imaging characteristics according to claim 1, characterized in that: The inner walls of the first detection electrode ring (31) and the second detection electrode ring (32) are provided with multiple electrodes. The first signal receiving device (21) and the second signal receiving device (22) are connected to the electrodes to receive the current emitted by the electrodes.

Images