CN105092147A - Experiment teaching system and method for rock strata movement simulation and top board pressure monitoring - Google Patents
Experiment teaching system and method for rock strata movement simulation and top board pressure monitoring Download PDFInfo
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- CN105092147A CN105092147A CN201510448361.7A CN201510448361A CN105092147A CN 105092147 A CN105092147 A CN 105092147A CN 201510448361 A CN201510448361 A CN 201510448361A CN 105092147 A CN105092147 A CN 105092147A
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Abstract
The invention discloses an experiment teaching system and method for rock strata movement simulation and top board pressure monitoring, and belongs to an experiment teaching system and method for students of the mining engineering major. The system comprises a mining working face simulation hydraulic support, a simulation rock stratum, a monitoring substation, a monitoring main station, top board pressure monitoring data communication substations, a DC stabilized-voltage power supply, and a computer. The simulation rock stratum is disposed above the mining working face simulation hydraulic support, and simulates the change of a rock stratum structure in a backstopping process of a working face along with the rising of the mining working face simulation hydraulic support. The top board pressure monitoring data communication substations are connected to front and rear vertical columns of the simulation support, and respectively collect and record the pressures of the front and rear vertical columns of the simulation support. The collected data is transmitted to the computer through the monitoring main station and the communication substation, and is used for simulating the change rule of the pressure of the top board in the backstopping process of the working face. The system is simple in structure, is convenient to operate, and can help students visually master the movement rule of the rock stratum of the mining working face and the relation of the interaction between coal pressure monitoring and the support and surrounding rocks.
Description
Technical field
The present invention relates to a kind of mining engineering specialty student experimenting tutoring system and method, the simulation of a kind of strata movement and roof pressure monitoring experiment tutoring system and method.
Background technology
Under rock pressure [in mine, the teaching of the movement law of rock stratum is mainly through the simulation in office coaching and laboratory, and laboratory simulation generally adopts the simulated experiment of analog material.Similarity simulation experiment is based on similarity theory, utilizes the similar or similar characteristics existed between things or phenomenon to study a kind of method of the natural law.Be used for studying rock pressure [in mine and rock stratum mechanics at Mineral Engineering field similarity simulation experiment.For employing similarity simulation experiment, need first to lay similar material model according to each rock stratum situation, after model dries, again excavation simulation is carried out to model, to obtain strata movement under simulated condition and rock pressure [in mine rule.But excavation analog simulation model cannot reuse, and this teaching method is time-consuming, effort both, and cost is comparatively large, and waste is serious simultaneously.
Along with mine is information-based and digitized development, the monitoring means of rock pressure [in mine there has also been very large lifting.At present, rock pressure [in mine on-line monitoring system uses energetically at each mine.Rock pressure [in mine on-line monitoring system carries out on-line monitoring, record and transmission by pressure monitoring substation to the oil pressure of force piece column, is carried out collection and the analysis of data by computing machine.Along with the development of pollutant in coalmine, face roof pressure on-line monitoring system has become the requisite part of Modern Pit, coal enterprise proposes corresponding Capability Requirement to mining engineering student simultaneously, but because top board on-line monitoring system cost is high, student only have at the scene practice time just can touch, cannot grasp its use.
Summary of the invention
The object of the invention is to provide a kind of strata movement to simulate and roof pressure monitoring experiment tutoring system and method, solves that existing teaching method is time-consuming, effort, and cost is large, wastes serious problem.
For achieving the above object, experiment teaching system technical scheme of the present invention, comprising: simulation hydraulic support, support front column, support rear column, spring, simulation immediate roof, simulation base object model, simulation goaf spoil, the first manual pump, the second manual pump, hydraulic pump and hydraulic jack; Connection bracket front column and support rear column on simulation hydraulic support, spring is had at support front column and support rear column upper socket, there are simulation immediate roof and simulation base object model at support front column and support rear column upper end, have simulation goaf spoil in the side of support rear column; Hydraulic jack is connected between spring and simulation immediate roof, and hydraulic jack is connected with hydraulic pump; Support front column and support rear column are respectively with the second manual pump with the first manual pump is corresponding is connected; At support front column and the second manual pump with have between support rear column with the first manual pump to export and be connected with Monitor Sub-Station of Less, Monitor Sub-Station of Less is connected with monitoring main website, monitors main website and is connected with computing machine by communication port.
Simulation hydraulic support is four column hydraulic supports, and two front columns provide pressure to realize setting prop, to fall post by manual pump, and two rear columns provide pressure to realize setting prop, to fall post by manual pump; Be used for simulating coal face hydraulic support, realize the setting prop of support and fall post function; Simulation hydraulic support four column tops are all provided with spring, are used for having coordinated the requirement of column different distortion before and after support.
Simulation hydraulic pressure cradle top is provided with hydraulic jack, and the roof weighting of coal-face is simulated in the lifting realizing hydraulic jack by hydraulic pump.
The plank of simulation immediate roof and simulation base object model is installed at simulation hydraulic pressure cradle top; Stud bolt is adopted to connect between three pieces of planks of simulation base object model, in the connection ensured between block and revolution, the simulation immediate roof of simulation rock stratum roof plate, simulation base object model are arranged on above simulation hydraulic support, and with the lifting of simulation hydraulic support, disrumpent feelings and revolution accordingly also appears in rock stratum roof plate; Simulation immediate roof and simulation base object model, be used for simulating the immediate roof of coal-face and base object model, realizes the disrumpent feelings of base object model and revolution.
First manual pump and the second manual pump, for the column of simulating support provides oil pressure, provide the setting load of simulation hydraulic support stand top board.
Hydraulic pump, for simulation hydraulic pressure cradle top hydraulic jack provides oil pressure, analog operation face roof weighting.
Simulation support front pillar oil pipe is connected to the P1 mouth of pressure monitoring substation, simulation support rear pillar oil pipe is connected to the P2 mouth of pressure monitoring substation; Pressure monitoring substation adopts cable to connect with between monitoring main website, and the D.C. regulated power supply of connection main website provides electric energy for main website and substation; Main website adopts cable to connect with between communication substation, and communication substation is connected by RS232 interface with computing machine.
Roof pressure Monitor Sub-Station of Less, pressure monitoring main website, data communication substation and computing machine, carry out on-line monitoring to the front and back column oil pressure of simulation hydraulic support, realize the collection of data, record and analysis.
Teaching method technical scheme, comprises the steps:
Step 1: each oil circuit of connected system, is connected to the power supply of line monitoring system, cable and computing machine;
Step 2: whether each link of check system is safe and reliable, prepares errorless before confirming experiment;
Step 3: order opens computing machine, pressure on-line monitoring communication substation, D.C. regulated power supply respectively, regulates D.C. regulated power supply output voltage stabilization at 18V, opens on-line monitoring system data acquisition software, ensures that data acquisition is reliable;
Step 4: pressurize to simulation hydraulic support front column, support rear column with the first manual pump, the second manual pump respectively, simulation hydraulic support rises frame operation, guarantees that Setting Load of Powered Supports reaches 3Mpa;
Step 5: primer fluid press pump pressurizes gradually to hydraulic jack, analog operation face roof weighting, guarantees that hydraulic jack resulting pressure is no more than 5Mpa;
Step 6: observed and recorded backform intends immediate roof respectively, simulation base object model is carrying out the characteristics of motion in pressure situation;
Step 7: the pressure change of simulating support front column, support rear column in monitoring record experiment overall process, the Pressure Variation of analytical work face hydraulic prop;
Step 8: slowly unload hydraulic pump pressurization, simultaneously to the first manual pump, the second manual pump release, that simulates hydraulic support falls frame;
Step 9: experiment terminates, orderly close-down D.C. regulated power supply, pressure monitoring communication substation and computing machine.
Beneficial effect, owing to have employed such scheme, by simulating the motion of support, having driven the movement of simulation rock stratum, top, having shown strata movement rule in coal mining intuitively, and show the interaction relationship of hydraulic support and country rock intuitively.By the loading to hydraulic jack above simulation support, analog operation face is pressed, and carries out on-line monitoring to the oil pressure of simulation bracket upright post, makes the method for students roof pressure on-line monitoring and the process of data.React coal-face strata movement rule intuitively, and the interaction relationship of coal face hydraulic support and country rock.
Advantage: intuitively manifesting of coal-face roof strata movement law can be realized; Intuitively manifesting of hydraulic support and shoulder bed effects relation can be realized; The simulated experiment of roof of coal face pressure on-line monitoring can be realized.
Accompanying drawing explanation
Fig. 1 is present system one-piece construction figure.
Fig. 2 is simulation hydraulic pressure rack assumption diagram of the present invention.
Fig. 3 is the side-looking structural drawing of Fig. 2.
In figure: 1, simulate hydraulic support; 2, support front column; 3, support rear column; 4, spring; 5, immediate roof is simulated; 6, base object model is simulated; 7, goaf spoil is simulated; 8, the first manual pump; 9, the second manual pump; 10, hydraulic pump; 11, hydraulic jack.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Experiment teaching system technical scheme of the present invention, comprising: simulation hydraulic support 1, support front column 2, support rear column 3, spring 4, simulation immediate roof 5, simulation base object model 6, simulation goaf spoil 7, first manual pump 8, second manual pump 9, hydraulic pump 10 and hydraulic jack 11; Connection bracket front column 2 and support rear column 3 on simulation hydraulic support 1, spring 4 is had at support front column 2 and support rear column 3 upper socket, there are simulation immediate roof 5 and simulation base object model 6 at support front column 2 and support rear column 3 upper end, have simulation goaf spoil 7 in the side of support rear column 3; Hydraulic jack 11 is connected between spring 4 and simulation immediate roof 5, and hydraulic jack 11 is connected with hydraulic pump 10; Support front column 2 and support rear column 3 are respectively with the second manual pump 9 with the first manual pump 8 is corresponding is connected; At support front column 2 and the second manual pump 9 with have to export between support rear column 3 with the first manual pump 8 and be connected with Monitor Sub-Station of Less, Monitor Sub-Station of Less is connected with monitoring main website, monitors main website and is connected with computing machine by communication port.
Simulation hydraulic support 1 is four column hydraulic supports, and two front columns 2 provide pressure to realize setting prop, to fall post by manual pump 8, and two rear columns 3 provide pressure to realize setting prop, to fall post by manual pump 9; Be used for simulating coal face hydraulic support, realize the setting prop of support and fall post function; Simulation hydraulic support 1 four column tops are all provided with spring 4, are used for having coordinated the requirement of column different distortion before and after support.
Simulation hydraulic support 1 top is provided with hydraulic jack 11, and the roof weighting of coal-face is simulated in the lifting realizing hydraulic jack by hydraulic pump 10.
The plank of simulation immediate roof 5 and simulation base object model 6 is installed at simulation hydraulic support 1 top; Stud bolt is adopted to connect between three pieces of planks of simulation base object model 6, in the connection ensured between block and revolution, the simulation immediate roof 5 of simulation rock stratum roof plate, simulation base object model 6 are arranged on above simulation hydraulic support, and with the lifting of simulation hydraulic support, disrumpent feelings and revolution accordingly also appears in rock stratum roof plate; Simulation immediate roof 5 and simulation base object model 6, be used for simulating immediate roof and the base object model of coal-face, realize the disrumpent feelings of base object model and revolution.
First manual pump 8 and the second manual pump 9, for the column of simulating support provides oil pressure, provides the setting load of simulation hydraulic support stand top board.
Hydraulic pump 10, for simulation hydraulic pressure cradle top hydraulic jack 11 provides oil pressure, analog operation face roof weighting.
Simulation support front pillar 2 oil pipe is connected to the P1 mouth of pressure monitoring substation, simulation support rear pillar 3 oil pipe is connected to the P2 mouth of pressure monitoring substation; Pressure monitoring substation adopts cable to connect with between monitoring main website, and the D.C. regulated power supply of connection main website provides electric energy for main website and substation; Main website adopts cable to connect with between communication substation, and communication substation is connected by RS232 interface with computing machine.
Roof pressure Monitor Sub-Station of Less, pressure monitoring main website, data communication substation and computing machine, carry out on-line monitoring to the front and back column oil pressure of simulation hydraulic support, realize the collection of data, record and analysis.
Teaching method technical scheme, concrete steps are as follows:
Step 1: each oil circuit of connected system, is connected to the power supply of line monitoring system, cable and computing machine;
Step 2: whether each link of check system is safe and reliable, prepares errorless before confirming experiment;
Step 3: order opens computing machine, pressure on-line monitoring communication substation, D.C. regulated power supply respectively, regulates D.C. regulated power supply output voltage stabilization at 18V, opens on-line monitoring system data acquisition software, ensures that data acquisition is reliable;
Step 4: pressurize to simulation hydraulic support front column 2, support rear column 3 with the first manual pump 8, second manual pump 9 respectively, simulation hydraulic support rises frame operation, guarantees that Setting Load of Powered Supports reaches 3Mpa;
Step 5: primer fluid press pump 10 pairs of hydraulic jacks 11 pressurize gradually, analog operation face roof weighting guarantees that hydraulic jack resulting pressure is no more than 5Mpa;
Step 6: observed and recorded backform intends immediate roof 5 respectively, simulation base object model 6 is carrying out the characteristics of motion in pressure situation;
Step 7: the pressure change of simulating support front column 2, support rear column 3 in monitoring record experiment overall process, the Pressure Variation of analytical work face hydraulic prop;
Step 8: slowly unload hydraulic pump 10 and pressurize, simultaneously to the first manual pump 8, second manual pump 9 release, that simulates hydraulic support falls frame;
Step 9: experiment terminates, orderly close-down D.C. regulated power supply, pressure monitoring communication substation and computing machine.
Concrete demonstration of the type: use pressure monitoring substation model to be KJ216-F, pressure monitoring main website used model is KJ216-Z, and supplying DC stabilized voltage supply model is LW3J3, and mine data communication interface model used is KJ216-J.
Claims (5)
1. a strata movement simulation and roof pressure monitoring experiment tutoring system, it is characterized in that: experiment teaching system technical scheme, comprising: simulation hydraulic support, support front column, support rear column, spring, simulation immediate roof, simulation base object model, simulation goaf spoil, the first manual pump, the second manual pump, hydraulic pump and hydraulic jack; Connection bracket front column and support rear column on simulation hydraulic support, spring is had at support front column and support rear column upper socket, there are simulation immediate roof and simulation base object model at support front column and support rear column upper end, have simulation goaf spoil in the side of support rear column; Hydraulic jack is connected between spring and simulation immediate roof, and hydraulic jack is connected with hydraulic pump; Support front column and support rear column are respectively with the second manual pump with the first manual pump is corresponding is connected; At support front column and the second manual pump with have between support rear column with the first manual pump to export and be connected with Monitor Sub-Station of Less, Monitor Sub-Station of Less is connected with monitoring main website, monitors main website and is connected with computing machine by communication port.
2. strata movement simulation according to claim 1 and roof pressure monitoring experiment tutoring system, it is characterized in that: described simulation hydraulic support is four column hydraulic supports, two front columns provide pressure to realize setting prop, to fall post by manual pump, and two rear columns provide pressure to realize setting prop, to fall post by manual pump; Be used for simulating coal face hydraulic support, realize the setting prop of support and fall post function; Simulation hydraulic support four column tops are all provided with spring, are used for having coordinated the requirement of column different distortion before and after support.
3. strata movement simulation according to claim 1 and roof pressure monitoring experiment tutoring system, is characterized in that: the plank being provided with simulation immediate roof and simulation base object model at simulation hydraulic pressure cradle top; Stud bolt is adopted to connect between three pieces of planks of simulation base object model, in the connection ensured between block and revolution, the simulation immediate roof of simulation rock stratum roof plate, simulation base object model are arranged on above simulation hydraulic support, and with the lifting of simulation hydraulic support, disrumpent feelings and revolution accordingly also appears in rock stratum roof plate; Simulation immediate roof and simulation base object model, be used for simulating the immediate roof of coal-face and base object model, realizes the disrumpent feelings of base object model and revolution.
4. strata movement simulation according to claim 1 and roof pressure monitoring experiment tutoring system, is characterized in that: simulation support front pillar oil pipe is connected to the P1 mouth of pressure monitoring substation, simulation support rear pillar 3 oil pipe is connected to the P2 mouth of pressure monitoring substation; Pressure monitoring substation adopts cable to connect with between monitoring main website, and the D.C. regulated power supply of connection main website provides electric energy for main website and substation; Main website adopts cable to connect with between communication substation, and communication substation is connected by RS232 interface with computing machine.
5. use strata movement simulation and the roof pressure monitoring experiment teaching method of system described in claim 1, it is characterized in that: comprise the steps:
Step 1: each oil circuit of connected system, is connected to the power supply of line monitoring system, cable and computing machine;
Step 2: whether each link of check system is safe and reliable, prepares errorless before confirming experiment;
Step 3: order opens computing machine, pressure on-line monitoring communication substation, D.C. regulated power supply respectively, regulates D.C. regulated power supply output voltage stabilization at 18V, opens on-line monitoring system data acquisition software, ensures that data acquisition is reliable;
Step 4: pressurize to simulation hydraulic support front column, support rear column with the first manual pump, the second manual pump respectively, simulation hydraulic support rises frame operation, guarantees that Setting Load of Powered Supports reaches 3Mpa;
Step 5: primer fluid press pump pressurizes gradually to hydraulic jack, analog operation face roof weighting, guarantees that hydraulic jack resulting pressure is no more than 5Mpa;
Step 6: observed and recorded backform intends immediate roof respectively, simulation base object model is carrying out the characteristics of motion in pressure situation;
Step 7: the pressure change of simulating support front column, support rear column in monitoring record experiment overall process, the Pressure Variation of analytical work face hydraulic prop;
Step 8: slowly unload hydraulic pump pressurization, simultaneously to the first manual pump, the second manual pump release, that simulates hydraulic support falls frame;
Step 9: experiment terminates, orderly close-down D.C. regulated power supply, pressure monitoring communication substation and computing machine.
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| CN106124106A (en) * | 2016-06-20 | 2016-11-16 | 刘晓飞 | A kind of hydraulic support safe holding capacity detecting system |
| CN108470507A (en) * | 2018-05-30 | 2018-08-31 | 西安科技大学 | A kind of coal working face back production and fluid-percussion model of isolated support pushing device |
| CN111678683A (en) * | 2020-06-08 | 2020-09-18 | 中国矿业大学 | Method and device for predicting roof pressure of intelligent fully mechanized coal mining face of coal mine |
| CN113027385A (en) * | 2021-03-15 | 2021-06-25 | 长江大学 | Stratum support assembly unit structure and stratum support |
| CN114991844A (en) * | 2022-08-03 | 2022-09-02 | 太原向明智控科技有限公司 | Intelligent mining pressure data acquisition and statistics method for fully mechanized coal mining face of coal mine |
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Application publication date: 20151125 |