Device to record electromagnetic radiation arising during damage of rocks by drilling, and method of its application

FIELD: mining.

SUBSTANCE: device includes a loading device, comprising a metal body connected with a grounded base, a recording system comprising amplifiers, an analogue-to-digital transducer, a computer and screened cables. At the same time the loading device comprises a rock-breaking tool installed on a drilling machine, and a system of axial load supply comprising the following serially connected component: a pulley of axial load feed, a system of blocks and a system for suspension of weights installed on the frame. Also the device comprises a closed circulation system for bottomhole cleaning and cooling of the rock-breaking tool, a recording system comprising a pressure gauge, a phototach, a vibration sensor, a channel for registration of a permanent component of current and a channel for recording of an alternating component of current. The method includes installation of a sample in a clamp, deformation of a sample with the help of a loading device, registration of an arising electromagnet signal with a registration system. At the same time, setting experiment parameters, the initial and final positions of the axial load feed system are marked, accordingly at the start and end of the experiment, a boring pump motor is switched on, power is supplied to a three-phase transformer, from which power is then sent to a motor of a drilling machine, the rock-breaking tool is put in contact with the sample, and the required axial load is set, frequency of rock-breaking tool rotation is fixed by the phototach, pressure of the flushing liquid is recorded with the pressure gauge, plant oscillations are fixed by a vibration sensor, and along the channels for DC and AC the generated electromagnetic radiation is detected.

EFFECT: possibility to imitate loading of a sample with drilling, with variation of the experiment mode, under permanent registration of electromagnetic radiation parameters in process of sample damage, in the form of permanent and alternating components of current, and also the value applied to the load sample.

2 cl, 7 dwg

 

The invention relates to the field of mining and is designed to control the fracture of rock samples by the change in their stress-strain state.

The known device for reception of electromagnetic radiation produced by the deformation and fracturing of rocks - the patents of the Russian Federation NN 2006884, 2085736, 2155973, 2172005.

The disadvantages of these devices are low sensitivity and the impossibility of its variation depending on the experimental conditions, the impossibility of registration of the permanent component of current. In the device according to the patent of Russian Federation N 2085736 impossible to check the electric component of electromagnetic radiation. In the device according to the patent of Russian Federation N 2172005 loading of the sample is only possible compression.

Known stands for the study of electromagnetic radiation deformed to fracture of solids - RF patents NN 2190203, 2204128.

The disadvantages of these stands is the inability to assess the influence of the anisotropy of the properties of the sample by the value of the recorded electromagnetic radiation, the type of loading pattern on the principle differs from drilling.

The closest to the technical nature of the claimed solution is to stand for research of electromagnetic radiation deformed to fracture of a solid body, such as a sample of rock [RF patent N2253098, G01N3/08, G01N 27/00, publ. 27.05.2005,] including enclosed in an electromagnetic shield capacitor Converter of electromagnetic radiation, a load device, comprising a metal housing connected with a grounded base, and first and second rod, oppositely mounted in the axial cavity of the metal housing. The first metal rod is installed with the possibility of translational motion, force sensor, a registration system, including amplifiers, analog-to-digital Converter and computer, and shielded cables. Metal case load device made in the form of a hollow circular cylinder, which is the first plate of the capacitor of the Converter of electromagnetic radiation. The first and second metal terminals of the load device made in the form of bolts and mounted in the axial hole respectively, the first and second centering bushings load device having a threaded internal and external diameters and installed from the side with the threads on the inner diameter of the end sections of the metal housing of the load device. The first centering sleeve load device is made of metal, and the second of dielectric material, such as hard rubber, and has the form of a bolt, and between the y mounted in the hollow circular cylinder load device, the first and second metal cores sequentially placed force sensor in metal case, the intermediate plate and the deformable solid body. The first and second metal rods installed with the possibility of translational motion by turning their heads, and the end of the second of them, situated on the side of a deformable solid body has the shape of a conical indenter, while the second metal rod serves as a second plate of the capacitor of the Converter.

The disadvantages of this device are the possibility of registration of electromagnetic radiation only in laboratory conditions and the low level of automation experiment. In addition, structural features of the device can affect the sample only compressive loads.

Known methods of study and reception of electromagnetic radiation deformable solids - RF patents NN 2172005, 2253098, 2190203

The disadvantages of the above methods are the application of the method of loading the sample excellent on the principle of drilling, not a permanent component of the electric current, the use of equipment with high noise level.

The closest to the nature of the claimed is a method for the study of electromagnetic radiation, a deformable to destruction of solid bodies in the form of a rod [RF patent N 2204128, CL G01N 27/60, G01N 3/20, publ. 10.05.2003,], kiuchumi setting it on the stand, the use of a capacitive sensor, one of the plates which is made in the form of a plate mounted on the base of the stand and connected with the registration system, and the other is grounded. The deformation of the above-mentioned rod by application to the upper end of the external load through load device, comprising a movable support with a socket to accommodate the upper end of the deformable rod and mounted on the base stand stationary support with a socket to accommodate the lower end of this rod, the conversion using the specified capacitive sensor resulting signal is electromagnetic radiation of a deformable rod and registration system registration. As the other plates of the capacitive sensor use a different plate, and the plate installed on the base of the stand through an insulating strip. This deformable rod fitted between the plates of the capacitive sensor, and then to the upper end of the deformable rod installed in the socket, made from the end face of the movable support, serving as a lever linkage system load device, cyclically applied external bending load in opposite directions with this lever, which is moved in a vertical plane passing through the centerline of the lever and is of NESDA fixed bearing lever system load device.

The disadvantage of this method is that the deformation effect on the sample is different in principle from drilling, resulting in the recorded electromagnetic radiation has a small value and does not allow to control the process of destruction of the sample. Additionally, there is no possibility to register the magnitude of the applied load to the sample.

The objective of the proposed solutions is to enable reception of electromagnetic radiation in the destruction of rock samples by drilling.

The problem is solved by creating electromagnetic radiation destructible rock sample drilling when changing the mode settings, conversion and registration of electromagnetic radiation.

In the device for recording electromagnetic radiation arising from the destruction of rocks by drilling, comprising a load device comprising a metal casing connected to the grounded base, a registration system, including amplifiers, analog-to-digital Converter, a computer, and shielded cables. As the load device used rock cutting tool and the feed system of the axial load. The rock-breaking tool is installed on the drill press. Supply system axial load consists of sequentially connect the United pulley feed axial load, system blocks and hanging systems cargo mounted on the frame. Applied a closed circulation system for bottom hole cleaning and cooling of rock cutting tool. The system check includes the gauge, phototachometer, a vibration sensor, a channel for reception of the constant current component and a channel for reception of the variable component of the current.

The study of electromagnetic radiation arising in the process of destruction of a rock sample by drilling, by placing it in the clamp and drilling through rock cutting tool mounted on a drill press with a given axial load in the supply system of the axial load and the flow of washing fluid. Bottomhole cleaning and cooling of the rock cutting tool is carried out by circulating fluid moving in the circulation system of the closed type. In the result of the interaction of weapons rock cutting tool and a rock sample is generated electromagnetic radiation. The proposed device allows you to record electromagnetic radiation generated as a result of destruction of samples of rock by drilling with the specified settings.

In the method for detecting electromagnetic radiation arising from the destruction of the rock hole is m, a sample is installed in the clip, distort it using load device, the registration system will determine the electromagnetic signal. Setting the parameters of the experiment, note the start and end position of the feed system of the axial load, respectively at the beginning and end of the experiment. Include engine mud pump, apply power to the three-phase transformer, from which then the food served to the motor of the drilling machine. Rock cutting tool enter into contact with the sample and set the desired axial load. Record the frequency of rotation of the rock cutting tool phototachometer, mud fluid pressure registered by the pressure gauge and vibration fix the vibration sensor. The channels for the registration of a constant current component and the variable component of the current determines the generated electromagnetic radiation.

The destruction of the sample Torno rock drilling carry the rock cutting tool driven by a drilling shanka. load the sample by applying an axial load, register and change the setting drilling, to cool the rock cutting tool and a bottom hole cleaning using the circulation system of the closed type. In the result of the interaction of weapons rock cutting tool and the rock sample is generated electromagnetic radiation. The proposed method allows to register as a constant and a variable part of the electromagnetic radiation, to explore its features in the destruction of samples of rock drilling.

For explanations of the described object in figure 1-5 shows the flowchart of the proposed facility and its components.

Figure 1 is a General block diagram of the installation.

Figure 2 - block diagram of the drilling machine.

Figure 3 - block diagram of the circulation system.

4 is a block diagram of the feed system of the axial load.

5 is a block diagram of the system of registration.

6 and 7 are examples of a specific implementation method in the form of dialog boxes software when recording data during the experiment at different axial loads.

The device for recording elektromagnitnogo radiation arising from the destruction of rocks by drilling (Fig 1)consists of the drilling machine 1 (SS), circulation system 2 (CA), the supply system of the axial load 3 (SPSS) and registration system 4 (WED). The intersection between elements on the block diagram indicates the presence of functional relationships between data elements.

Drilling machine 1 (SS) (figure 2), consists of a basic part of the drilling machine (frame, pulleys, spindle-rotator) 5, a synchronous motor 6 (D), pan-settler 7 (LO) for washing liquid, pulley feed axial load 8, in which reluga 9 (B), rock cutting tool 10 and clip a rock sample 11 (ZSE), attached by bolts to the base of the machine 5.

Circulation system 2 (CA) closed (figure 3) consists of a swivel 9 (B), the tray tank 7 (LO), watering hose 12, the capacity of the tank 13 (SW), plastic flow 14, tanks for flushing fluids 15 (EPG), corrugated hose 16, trekhosmievogo mud pump 17 (bn) and tractor reinforced hose 18. The circulation system is assembled according to the following scheme: 9-7-12-13-14-15-16-17-18-9. In addition, the collector mud pump 25 (CIB) combines watering by hose 19 with capacity for drilling fluid 15 (EPG).

Supply system axial loads 3 (SPSS) (figure 4) consists of a pulley feed axial load 8 structurally located on the drill press 1 (SS) and frame 21 (R), with the attached blocks 22 (SAT) and hanging systems cargo 23 (CIS). All elements of the supply system of the axial load 3 (SPSS) will be connected by a metal wire 20.

The registration system 4 (CF) (figure 5) consists of devices regulation and control of the hydraulic canal, located in the circulation system 2 (CA), device registration drilling on the rock-breaking tool, located in the supply system of the axial load 3 (SPSS), digital phototachometer "EM" 26 (FT) device for registering lektromagnitnogo radiation and device for supplying power to the working elements of the drilling machine 1 (SS) and mud pump 17 (bn). Control device and the hydraulic control channel is represented by a pressure gauge 24 and a collector trekhosmievogo mud pump 25 (CBN). Device registration drilling on the rock-breaking tool is represented by a frame 21 (P). As a device for reception of electromagnetic radiation are used: the registration channel constant current component consisting of a circuit that includes a swivel 9 (B), the rock-breaking tool 10, the clip rocks 11 (ZSE), the resistance value of 75 Ohms 27 (S) and the amplifier 29 (N1); channel register variable current component consisting of a ferrite ring cores 28 (FC) and amplifier 30 (U2). Both channels are then connected to a personal computer 32 (PC) via oscilloscope prefix "PCLab2000" 31 (OP). For registering vibrations of the elements of the unit using the vibration sensor 33 (VD), which is installed on the drilling machine 1 (SS) or trehosnovnoy mud pump 17 (bn). The vibration sensor 33 (VD) is connected via oscilloscope prefix "PCLab2000" 31 (OD) to a personal computer 32 (PC). As the device supply power to the working elements of the drilling machine 1 (SS) use the engine 6 (D), connected through a diode to the three-phase transformer 34 (Lattre) and through the magnetic starter drill rods 35 (IRCC) to a three-phase network. At the trojstva supply power to the work items trekhosmievogo mud pump 17 (bn) is represented by the engine trekhosmievogo mud pump 36 (DBN) and magnetic starter trekhosmievogo mud pump 37 (MBN), connected to the three phase network.

Work is carried out as follows. The test sample is installed in the clip rocks 11 (ZSE), the personal computer 32 (PC) set the parameters of the experiment with the use of special software oscilloscope "PCLab2000" (set the time base mesh experiment - 1 (100 measurements per second), the sensitivity of the channels to register a constant component and a variable component of the current). Rock cutting tool 10 is removed from contact with the sample and fixed in a static position. Apply power to the engine mud pump 36 (DBN) by incorporating magnetic starter mud pump 36 (MPBN), thereby doing its work trehosnovnoy mud pump 17 (bn) and circulate drilling fluid through the circulation system 2 (CA). Apply power to the three-phase transformer 34 (Lattre) by incorporating magnetic starter drill rods 35 (IRCC). Three-phase transformer 34 (Lattre) set the desired value of the voltage supplied to the motor of the drilling machine 6 (D), resulting in the engine spins the rock-breaking tool 10 to the desired speed. Rock cutting tool 10 is introduced into contact with the sample and the system hanging cargo 23 (CIS) is installed it is possible to axial load by attaching commodity goods. Through 5-15, when will breaking rocks razrushayuschego tool 10 (IF) is a measure of its speed digital phototachometer "EM" 26 (CFT). On the frame 21 (B) make the mark with chalk level hanging systems cargo 23 (CIS) at the beginning of the experiment. Include a record of the results of the experiment on a personal computer 32 (PC). During the experiment, produce a definition of feed pressure of washing fluid on the pressure gauge "TM" 24. If necessary, change the quantity of washing fluid through the cork valve located on the manifold trekhosmievogo mud pump 25 (CBN). In this case, the excess liquid is returned to the tank for washing fluid 15 (EPG) watering the hose 19. The main flow of drilling fluid circulates through the scheme: 17-9-11-7-12-13-14-15-16-17. Emerging electromagnetic radiation registered by the following components: a constant component current (sample-10-9-27-11 sample)-29-31-32;

the variable component of the current - 28-30-31-32. Registering oscillations of the system elements are produced using contour - 1 (17)-33-31-32. The experiment is carried out for 5 minutes. At the end of the experiment produce stop recording data on a personal computer 31 (PC), mark with chalk on the frame 21 (R) system-level sample of goods 23 (CIS), produce the discharge, the output of paradores is the decisive tool 10 from contact with the sample, off the three-phase transformer 34 (Lattre), magnetic starter drill rods 35 (IRCC), and a magnetic starter mud pump 37 (MPBN). The amount of the sinking, shot with the frame 21 (P) is multiplied by a coefficient equal to the ratio of stroke mounting system cargo 23 (CIS) to the sinking of the sample, to obtain the true value of penetration to the rock-breaking tool 10. The data transferred to the personal computer 32 (PC) during the experiment, write to the *.txt file for further processing. Figure 6 and 7 shows examples of a specific implementation method in the form of dialog boxes software when recording data during the experiment on drilling Sandstone sample with an axial load, respectively, 2 and 12 kg and a speed of 500 Rev/min Sensitivity data readout channel AC / DC - 0.5 V, the number of dimensions - 100 in 1 C.

Thus, the proposed device allows you to record electromagnetic radiation arising from the destruction of samples of rock drilling, as a channel for reception of the permanent component of current and the channel to register the variable component of the current, and to change the mode of the experiment, the variation of the axial load and rotational speed rock cutting tool, the supply of washing fluid. Therefore, the proposed device which allows to solve the problem.

1. The device for recording electromagnetic radiation arising from the destruction of rocks by drilling, comprising a load device comprising a metal casing connected to the grounded base, a registration system, including amplifiers, analog-to-digital Converter, a computer, and shielded cables, wherein the load device comprises a rock cutting tool mounted on the drill press, and the delivery system axial load consisting of a series connected pulley feed axial load, system blocks and hanging systems cargo mounted on the frame, includes a closed circulating system for bottom hole cleaning and cooling of the rock cutting tool, a registration system, including the pressure gauge phototachometer, a vibration sensor, a channel for reception of the constant current component and a channel for reception of the variable component of the current.

2. The method of registration of electromagnetic radiation arising from the destruction of rocks by drilling, including the installation of a sample in the clip, the deformation of the sample by using a load device, the registration resulting electromagnetic signal registration system, characterized in that, setting the parameters of the experiment, note the start and end position of the system under the Chi axial load, respectively at the beginning and end of the experiment, turn on the engine mud pump, apply power to the three-phase transformer, from which then the food served to the motor of the drilling machine, rock cutting tool enter into contact with the sample and set the desired axial load, fixed speed rock cutting tool phototachometer, mud fluid pressure registered by the pressure gauge, vibration fix a vibration sensor, and the channels for registration of fixed and variable components of the current determines the generated electromagnetic radiation.



 

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