CN102635405A

CN102635405A - Real-time microseismic monitoring system and monitoring method for coal mines

Info

Publication number: CN102635405A
Application number: CN2012101122505A
Authority: CN
Inventors: 潘一山; 冀常鹏; 李忠华; 李国臻
Original assignee: Liaoning Technical University
Current assignee: Liaoning Sunshine Stone Science And Technology Park Co Ltd
Priority date: 2012-04-17
Filing date: 2012-04-17
Publication date: 2012-08-15
Anticipated expiration: 2032-04-17
Also published as: CN102635405B

Abstract

The invention belongs to a coal mine safety monitoring device, and particularly relates to a real-time microseismic monitoring system and monitoring method for coal mines. An industrial Ethernet ring network (11) is connected with a ground switchboard (4) above the ground and an underground switchboard (4-1), the ground switchboard (4) is respectively connected with a timing system (2), a central control machine (1) and a parameter database (10), the underground switchboard (4-1) is connected with four underground monitoring hosts (3), each underground monitoring host (3) is connected with four terminal boxes (5) by signal lines (8), one of the terminal boxes (5) is connected with an underground power supply (7) by using a sensor supply line (9), and each terminal box (5) is connected with an acceleration sensor (6). By using the real-time microseismic monitoring system and monitoring method for coal mines, disclosed by the invention, the intelligent identification and extraction of microseismic signals of coal mines can be realized, and a terminal device can implement remote control, therefore, the system and method disclosed by the invention have the characteristics of flexibility, reliability, good monitoring effect and small investment.

Description

Colliery microseism real-time monitoring system and monitoring method

Technical field

The invention belongs to coal mine safety monitoring equipment, particularly a kind of colliery microseism real-time monitoring system and monitoring method.

Background technology

The ore deposit shake is the mine earthquake that mining is brought out, and is the Nature disaster of mine, when the ore deposit shake takes place; Country rock releases energy rapidly, and coal petrography was destroyed suddenly by moment, can form powerful impact air-flow; Cause the roof fall wall caving, support fractures, and the tunnel is stopped up; Earth shock, disasters such as house damage and personal injury.

At present both at home and abroad all in the technology of research prediction and the shake of control ore deposit,, never be well solved though ore deposit shake mechanism is had gained some understanding and had some preventive action.Most at present researchs all are to specialize in to some phenomenons of ore deposit shake.China's mine was built in for five sixties mostly; These mines are about to get into deep mining at present; Ore deposit earthquake calamity evil will become more and more serious, and further ascendant trend will appear in the generation of coal mine earthquake, like big the well in colliery, Co., Ltd of capital coal group Mu Cheng ravine; Taken place since 1961 surplus the damaging impact ground pressure accident ten time, had a strong impact on Safety of Coal Mine Production.To the ore deposit earthquake calamity evil especially real-time watch device of colliery microseism; Not reaching monitored data at present writes down storage automatically and monitored data is realized Long-distance Control and transmission in real time in the time of transmission fault; Do not reach flexible, monitoring reliably; The purpose of avoiding accident to take place, the monitoring equipment that has need be invested very big.

Summary of the invention

The objective of the invention is to overcome above-mentioned technical deficiency, provide a kind of flexibility and reliability, investment little, can be accurately the colliery microseism real-time monitoring system and the monitoring method of real-time monitoring and prediction.

The technical scheme that technical solution problem of the present invention adopts is: colliery microseism real-time monitoring system comprises center control machine, time dissemination system, ground switch, parameter database, industrial ethernet ring network, down-hole switch, underground monitoring main frame, junction box, acceleration transducer, down-hole power, holding wire, sensor supply lines; The annexation that is characterized in them is following: industrial ethernet ring network connects ground switch and the switch of down-hole above the ground; The ground switch connects time dissemination system, center observing and controlling machine and parameter database respectively; The down-hole switch connects four underground monitoring main frames; Each underground monitoring main frame all connects four junction boxes with holding wire, and one of them junction box connects down-hole power with the sensor supply lines, all connects an acceleration transducer on each junction box; The underground monitoring main frame is made up of following terminal hardware: Intel PXA270 controller, flash memory or nonvolatile memory, system reset and watchdog circuit, display circuit, network interface circuit, high accuracy time service element circuit, monitor signal input circuit, CPLD or FPGA coprocessor, programmable amplifying circuit, A/D change-over circuit, HIGH SPEED DATA COLLECTOR AND BUFFER; Their annexation be Intel PXA270 controller respectively with sudden strain of a muscle or nonvolatile memory, system reset with watchdog circuit, display circuit, network interface circuit, high accuracy time service element circuit, CPLD or the FPGA coprocessor is two-way is connected; And to CPLD or FPGA coprocessor input control signal; The monitor signal input circuit is to three control signals of the unidirectional input of programmable amplifying circuit; The unidirectional input of programmable amplifying circuit connects the A/D change-over circuit; The unidirectional input of A/D change-over circuit connects HIGH SPEED DATA COLLECTOR AND BUFFER; CPLD or FPGA coprocessor are connected with HIGH SPEED DATA COLLECTOR AND BUFFER is two-way, and to the unidirectional input control signal of HIGH SPEED DATA COLLECTOR AND BUFFER, the unidirectional input of HIGH SPEED DATA COLLECTOR AND BUFFER connects Intel PXA270 controller and unidirectional input interrupt request singal.

The invention has the beneficial effects as follows: colliery microseism real-time monitoring system and monitoring method can be accomplished Intelligent Recognition and extraction to the signal of colliery microseism, and the monitor signal high-speed real-time is gathered, monitored data record storage automatically when transmission fault, and can long-rangely send; Terminal device can be realized Long-distance Control; Have flexibly, reliably, monitoring effect is good, invests little characteristics; Safety in production to the colliery provides safe and reliable data, reduces the loss that the colliery microseism brings.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 is colliery microseism real-time monitoring system structure annexation figure.

Fig. 2 is the locating terminal hardware composition frame chart of colliery microseism real-time monitoring system.

Among the figure, 1-center observing and controlling machine; The 2-time dissemination system; 3-underground monitoring main frame; 4-ground switch; 4-1-down-hole switch; The 5-junction box; The 6-acceleration transducer; The 7-down-hole power; The 8-holding wire; 9-sensor supply lines; The 10-parameter database; 11-industry ethernet ring network; The 12-controller; 13-flash memory or nonvolatile memory; 14-system reset and watchdog circuit; The 15-display circuit; The 16-network interface circuit; 17-high accuracy time service element circuit; 18-monitor signal input circuit; The 19-coprocessor; The 20-programmable amplifying circuit; The 21-A/D change-over circuit; The 22-HIGH SPEED DATA COLLECTOR AND BUFFER.

The specific embodiment

Embodiment, with reference to accompanying drawing 1, colliery microseism real-time monitoring system structure by the industrial ethernet ring network 11 that is provided with the down-hole on the ground on the ground face be connected ground switch 4, switch 4-1 under the connection well of down-hole.Ground switch 4 connection center observing and controlling machines 1, time dissemination system and parameter database 10.Down-hole switch 4-1 connects four identical downhole monitoring main frames 3; Four downhole monitoring main frames 3 connect junction box 5 with holding wire 8 respectively; Each junction box 5 connects acceleration transducer 6 respectively, and one of them junction box 5 usefulness sensor supply lines 9 connects down-hole power 7.With reference to accompanying drawing 2; The underground monitoring main frame is made up of following terminal hardware: Intel PXA270 controller 12, flash memory or nonvolatile memory 13, system reset and watchdog circuit 14, display circuit 15, network interface circuit 16, high accuracy time service element circuit 17, monitor signal input circuit 18, CPLD or FPGA coprocessor 19, programmable amplifying circuit 20, A/D change-over circuit 21, HIGH SPEED DATA COLLECTOR AND BUFFER 22.Their annexation is following: Intel PXA270 controller 12 respectively with flash memory or nonvolatile memory 13, system reset and watchdog circuit 14, display circuit 15, network interface circuit 16, high accuracy time service element circuit 17 and CPLD or 19 two-way connections of FPGA coprocessor; And to CPLA or FPGA coprocessor 19 unidirectional output control signals; CPLD or

FPGA coprocessor

19 and 22 two-way connections of HIGH SPEED DATA COLLECTOR AND BUFFER; And to A/D change-over circuit 21 and HIGH SPEED DATA COLLECTOR AND BUFFER 22 unidirectional output control signals; Monitor signal input circuit 18 is to three groups of control signals of programmable amplifying circuit 20 unidirectional outputs; Programmable amplifying circuit 20 unidirectional outputs connect A/D change-over circuit 21; The unidirectional output of A/D change-over circuit connects HIGH SPEED DATA COLLECTOR AND BUFFER 22, and HIGH SPEED DATA COLLECTOR AND BUFFER 22 unidirectional outputs connect Intel PXA270 controller 12 and import interrupt requests.

Colliery microseism real-time monitoring system and monitoring method are following: ground level is provided with three-component acceleration transducer 6 in the mine coal seam tunnel; Underground monitoring main frame 3 keeps the monitoring of time service and ore deposit shake to carry out synchronously with down-hole switch 4-1; By acceleration transducer 6 acquired signal, be transferred to ground installation through industrial ethernet ring network 11.High accuracy time service element circuit 17 guarantees that the accurate of 22 times of HIGH SPEED DATA COLLECTOR AND BUFFER is with synchronously.

Claims

1. a colliery microseism real-time monitoring system comprises center control machine (1), time dissemination system (2), ground switch (4), parameter database (10), industrial ethernet ring network (11), down-hole switch (4-1), underground monitoring main frame (3), junction box (5), acceleration transducer (6), down-hole power (7), holding wire (8), sensor supply lines (9); The annexation that it is characterized in that them is following: industrial ethernet ring network (11) connects ground switch (4) and the switch (4-1) of down-hole above the ground; Ground switch (4) connects time dissemination system (2), center observing and controlling machine (1) and parameter database (10) respectively; Down-hole switch (4-1) connects four underground monitoring main frames (3); Each underground monitoring main frame (3) all uses holding wire (8) to connect four junction boxes (5); One of them junction box (5) connects down-hole power (7) with sensor supply lines (9), all connects an acceleration transducer (6) on each junction box (5); The underground monitoring main frame is made up of following terminal hardware: Intel PXA270 controller (12), flash memory or nonvolatile memory (13), system reset and watchdog circuit (14), display circuit (15), network interface circuit (16), high accuracy time service element circuit (17), monitor signal input circuit (18), CPLD or FPGA coprocessor (19), programmable amplifying circuit (20), A/D change-over circuit (21), HIGH SPEED DATA COLLECTOR AND BUFFER (22); Their annexation be Intel PXA270 controller (12) respectively with sudden strain of a muscle or nonvolatile memory (13), system reset and watchdog circuit (14), display circuit (15), network interface circuit (16), high accuracy time service element circuit (17), CPLD or two-way connection of FPGA coprocessor (19); And to CPLD or FPGA coprocessor (19) input control signal; Monitor signal input circuit (18) is to three control signals of the unidirectional input of programmable amplifying circuit (20); The unidirectional input of programmable amplifying circuit (20) connects A/D change-over circuit (21); The unidirectional input of A/D change-over circuit (21) connects HIGH SPEED DATA COLLECTOR AND BUFFER (22); CPLD or FPGA coprocessor (19) and two-way connection of HIGH SPEED DATA COLLECTOR AND BUFFER (22); And to the unidirectional input control signal of HIGH SPEED DATA COLLECTOR AND BUFFER (22), the unidirectional input of HIGH SPEED DATA COLLECTOR AND BUFFER (22) connects Intel PXA270 controller (12) and unidirectional input interrupt request singal.