An intelligent source excitation system based on seismic slot wave exploration

Abstract

The present invention proposes an intelligent source excitation system based on seismic trough wave exploration. The system consists of a source excitation device, a remote control host, a communication data line, a signal receiving unit, and a source. The signal receiving unit is connected to the source and the communication data line respectively. The remote control host can identify the physical address of the signal receiving unit connected to the communication data line, sort it according to its position, and display it on the host interface. On the other hand, each signal receiving unit can be remotely controlled and triggered through the communication data line. It can be operated manually or intelligently triggered by setting parameters such as time. Its beneficial effect is that the present invention can realize remote, fixed-point controllable excitation in coal mines, solve the time-consuming and labor-intensive problem of manual connection and excitation in current seismic trough wave exploration, make the work process intelligent and simple, safe and efficient, and significantly improve work efficiency, which is of great significance to the promotion of coal mine seismic trough wave exploration technology.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic exploration of coal mining working faces, and in particular to an intelligent seismic source excitation system based on seismic trough wave exploration. Background Art

[0002] Seismic trough wave exploration, a type of seismic exploration, is one of the most accurate geophysical methods for detecting hidden geological factors that can cause mine disasters, such as changes in coal thickness, faults, and goafs. It has seen rapid development in China in recent years. Seismic trough wave exploration is conducted at the working face of a coal seam in an underground coal mine. Seismic survey lines with receiving and excitation points are arranged along the coal roadways, and several data acquisition instruments are deployed in the working face roadways to receive seismic trough wave information generated by the earthquake source.

[0003] When a seismic source is excited in a coal seam, the generated P and S waves reverberate and superimpose within the coal seam, forming channel waves. The exploration method, seismic source, and the location and density of data receiving points must be determined in advance based on the exploration objectives, accuracy, working face geometry, and roadway geological data. During underground coal mine exploration, the seismic source typically uses a combination of detonators and mining emulsion explosives, and these sources are excited one by one according to the principles of channel wave exploration.

[0004] According to regulations governing underground blasting in coal mines, remote blasting is mandatory. The blasting site must be located outside the reverse damper on the air inlet side, in fresh airflow with full pressure ventilation, or in a shelter. The distance between the blasting site and the coal face must be no less than 100 meters, and the time required to inspect the face after blasting must be no less than 30 minutes. However, achieving full data coverage of the working face using seismic slot wave exploration requires dozens, or even more, of blasts. This results in a lengthy and inefficient seismic slot wave exploration. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention proposes an intelligent source excitation system based on seismic slot wave exploration.

[0006] The technical solution of the present invention is achieved as follows:

[0007] An intelligent source excitation system based on seismic slot wave exploration, comprising:

[0008] A source excitation device, a remote control host, a communication data line, and several signal receiving units and a source. The source excitation device is connected to the terminal of the communication data line. Several signal receiving units are also connected to the communication data line. Each signal receiving unit is connected to a source. The remote control host is connected to the communication data line between the signal receiving unit and the source excitation device, and the remote control host is at one end close to the source excitation device.

[0009] Preferably, several seismic sources use low-delay detonators and mining emulsion explosives of the same model and specification. The shorter the detonator delay, the better, and instantaneous electric detonators are preferred.

[0010] Preferably, the signal receiving unit consists of a clamping cover, a communication line connector, a shell, a connecting line and a wire quick-plug connector. A card slot is provided on the communication line connector, and a double needle is provided on the card slot. The communication data line passes through the card slot and is clamped and fixed by the upper and lower protruding pressure blocks of the clamping cover. A controllable chip is provided in the shell, and the controllable chip is electrically connected to the communication line connector and the connecting line. The wire quick-plug connector is a push-type connector, which is plug-in and installable, which is convenient and quick. The two ends of the wire quick-plug connector are respectively connected to the connecting line and the foot line of the source.

[0011] Preferably, to ensure connection security, the two connecting lines are installed in a staggered manner, one long and one short.

[0012] Preferably, the communication data line uses an insulated twisted pair with good conductivity, which can stably transmit signal data; after the compression cover is closed, the double needles on the communication line connector pierce the surface of the communication data line and contact the wire core inside it.

[0013] Preferably, the controllable chip is installed between the communication line connector and the connecting line, and the default state of its circuit module is set to "normally open". To facilitate identification and processing by the remote control host, each of the controllable chips has an independent and non-repetitive physical address. The remote control host can control the controllable chip through the communication data line to achieve circuit closure.

[0014] Preferably, the remote control host includes a storage module, a data processing module, a display module, and an alarm module. The storage module identifies and records each signal receiving unit; the data processing module controls the signal receiving unit and the communication data line; and the display module is a display device capable of human-computer interaction.

[0015] The beneficial effects of the present invention are as follows: the present invention can realize remote, fixed-point controllable excitation in coal mines, solve the time-consuming and labor-intensive problem of manual connection and excitation one by one in current seismic trough wave exploration, make the workflow intelligent, simple, safe and efficient, significantly improve work efficiency, and have important significance for the promotion of coal mine seismic trough wave exploration technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a schematic diagram of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the signal receiving unit of the present invention;

[0019] Figure 3 This is a front view of the signal receiving unit of the present invention. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 3 1. An intelligent source excitation system based on seismic slot wave exploration, comprising:

[0022] A source excitation device 1, a remote control host 2, a communication data line 3, and several signal receiving units 4 and a source 5. The source excitation device 1 is connected to the terminal of the communication data line 3. Several signal receiving units 4 are also connected to the communication data line 3. Each signal receiving unit 4 is connected to a source 5. The remote control host 2 is connected to the communication data line 3 between the signal receiving unit 4 and the source excitation device 1, and the remote control host 2 is at one end close to the source excitation device 1.

[0023] Due to the fast propagation speed of slot waves, in order to improve data quality, source 5 uses low-delay detonators and mining emulsion explosives of the same model and specifications. The shorter the detonator delay, the better, and instantaneous electric detonators are preferred.

[0024] The signal receiving unit 4 consists of a clamping cover 41, a communication line connector 42, a shell 43, a connecting line 44 and a wire quick-plug connector 45. A card slot 46 is provided on the communication line connector 42, and a double needle 47 is provided on the card slot 46. The communication data line 3 passes through the card slot 46 and is clamped and fixed by the upper and lower protruding pressure blocks 48 of the clamping cover 41. After the clamping cover 41 is closed, the clamping head 49 on the clamping cover 41 is clamped in the small card slot 50 to achieve locking. The double needle 47 on the communication line connector 42 pierces the skin of the communication data line 3 and contacts the wire core inside it, thereby realizing the connection between the communication data line 3 and the controllable chip in the shell 43, that is, the "point-needle type" is adopted to ensure line connectivity.

[0025] When resetting, the communication line connector 42 presses the reset button 51 , and the clamping head 49 can be disengaged from the small clamping slot 50 , thereby resetting the pressing cover 41 .

[0026] A controllable chip is provided in the shell 43, and the controllable chip is electrically connected to the communication line connector 42 and the connecting line 44. The controllable chip is installed between the communication line connector 42 and the connecting line 44. The default state of its circuit module is set to "normally open". To facilitate identification and processing by the remote control host 2, each controllable chip 42 has an independent and non-repetitive physical address, and the circuit can be closed under the control of the remote control host 2.

[0027] The wire quick-plug connector 45 is a push-type connector, which is convenient and quick to plug and install; to ensure the safety of the connection, the two connecting wires 44 and the leg wires of the source 5 are connected in a staggered manner with one long and one short to avoid cross-connection at the connection.

[0028] The remote control host 1 has a built-in control system, including a storage module for identifying and recording each signal receiving unit 4, a data processing module for controlling the signal receiving unit 4 and the communication line, a display module for facilitating human-computer interaction, and an alarm module for abnormal situations. On the one hand, the remote control host 1 can identify the physical address of the signal receiving unit 4 connected to the line, sort it according to its position, and display it on the host interface of the display module. On the other hand, it can remotely control and trigger each signal receiving unit 4 through the communication data line 3. It can be operated manually or intelligently triggered by parameter settings such as time. When the communication data line 3 is disconnected or the connection is abnormal, the remote control host will issue an alarm prompt.

[0029] The system is implemented as follows:

[0030] The construction plan design first determines the exploration method (transmission, reflection, or combined transmission / reflection), the location of the seismic source and receiver points, the time, personnel, equipment quantity, and corresponding safety measures based on the exploration target, accuracy, working face geometry, and tunnel sketch. The equipment is then transported to the designated location in advance to complete the pre-construction preparations.

[0031] Drilling construction, according to the design scheme selected in step (1), complete the location of the source hole in the design drawing, and make point marks, marking them in order from small to large with S1, S2, S3... Construction personnel carry out blast hole construction at the location of the sign, with a depth of 2~3m. According to the size of the working surface, the amount of explosives is 100-300g. The blaster should check the specifications of the detonator in advance before entering the site to ensure that the same model is used. The one with short delay is given priority and there is no mixed loading.

[0032] After the system device is connected, the communication data line 3 is laid along the tunnel, with the starting point 2-5m outside the farthest source hole design point and the end point at the safe excitation point. The communication data line 3 should be close to the ground on one side of the borehole to prevent personnel or underground machinery and equipment from damaging the cable. After the source drilling construction is completed, the explosives are installed at the bottom of the hole. The gun mud is made of high-quality yellow mud, which is filled and compacted. The sealing length shall not be less than 0.6m.

[0033] After the installation of explosives is completed, the two leg wires leading out of the source 5 are respectively connected to the two wire quick-plug connectors 45 on the signal receiving unit 4, and the length-short staggered connection is used to prevent short circuit. Then the communication data line 3 is placed in the card slot 46 of the communication line connector 42, and the pressing cover 41 is pressed to ensure that the double needle 47 breaks through the insulating surface of the communication data line 3 and contacts the conductive core. Connect all the source points according to the above steps; after completion, connect the remote control host 1 to the communication data line 3 at the designed source excitation point, identify the physical address of each signal receiving unit 4, and sort them in order from near to far or from far to near. If there is any abnormality, check and replace the equipment in time, arrange the instruments and equipment, and conduct a final inspection of the entire system. The working face should ensure normal ventilation and no hidden dangers, and do a good job of warning at the working face warning point.

[0034] During construction, after the system connection is completed, the working face is first evacuated, and then the power is turned off to ensure the safety of the working environment. Then, the source excitation device is connected to the remote control host 1 at the safe excitation point. According to the entire seismic trough wave exploration system, when the source needs to be excited, the remote control host 1 controls the corresponding numbered signal receiving unit 4 to close the loop, and then the source excitation device excites the source. The sources are excited one by one in sequence according to the above steps.

[0035] After the equipment is recovered and the operation is completed, the site is inspected to ensure that there are no duds or lost rounds, and the equipment is counted.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent source excitation system based on seismic slot wave exploration, characterized in that: include: A seismic source excitation device (1), a remote control host (2), a communication data line (3), a plurality of signal receiving units (4) and a seismic source (5); the seismic source excitation device (1) is connected to a terminal of the communication data line (3); a plurality of signal receiving units (4) are further connected to the communication data line (3); each signal receiving unit (4) is connected to a seismic source (5); the remote control host (2) is connected to the communication data line (3) between the signal receiving unit (4) and the seismic source excitation device (1); and the remote control host (2) is at one end close to the seismic source excitation device (1); The signal receiving unit (4) is composed of a pressing cover (41), a communication line connector (42), a housing (43), a connecting line (44) and a wire quick-plug connector (45). A card slot (46) is provided on the communication line connector (42), and a double needle (47) is provided on the card slot (46). The communication data line (3) passes through the card slot (46) and is pressed and fixed by the upper and lower convex pressing blocks (48) of the pressing cover (41). A controllable chip is provided in the housing (43), and the controllable chip is electrically connected to the communication line connector (46) and the connecting line (44). The wire quick-plug connector (45) is a press-type plug connector, and the two ends of the wire quick-plug connector (45) are respectively connected to the connecting line (44) and the foot line of the source (5). The two connecting lines (44) are staggered, one long and one short. The controllable chip is installed between the communication line connector (42) and the connecting line (44). The default state of the circuit module is set to "normally open". The remote control host (2) can control the controllable chip to achieve circuit closure through the communication data line (3). Each controllable chip has an independent and non-repetitive physical address. The remote control host (2) comprises a storage module, a data processing module, a display module, and an alarm module. The storage module identifies and records each signal receiving unit (4); the data processing module controls the signal receiving unit (4) and the communication data line (3); and the display module is a display device capable of human-computer interaction.

2. The intelligent source excitation system based on seismic slot wave exploration according to claim 1, characterized in that: Several earthquake sources (5) use low-delay detonators and mining emulsion explosives of the same model and specification.

3. The intelligent source excitation system based on seismic slot wave exploration according to claim 1, characterized in that: After the pressing cover (41) is closed, the double needles (47) on the communication line connector (42) pierce the skin of the communication data line (3) and contact the wire core inside the communication data line (3).

4. The intelligent source excitation system based on seismic slot wave exploration according to claim 1, characterized in that: A clamping head (49) is also provided on the pressing cover (41), and a small clamping groove (50) and a reset button (51) matched with the clamping head are provided on the communication line connector (42).

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