Device for orientation of tunnelling system during construction of curved tunnels

FIELD: mining.

SUBSTANCE: device for orientation of tunnelling system during construction of curved tunnels includes the units located in line of sight and at the specified distance from each other, the end ones of which are rigidly fixed, one - in starting tube, and the other one - on tunnelling shield, intermediate units are installed inside the erected part of the tunnel, each unit is equipped with a photo sensor, light emitting element and roll sensor, also, the device is provided with sensor of amount of advance and data transfer channels between the device assemblies and computing unit with a display; at that, each unit is equipped with a plate with sector symmetric light-tight slots, plate is located on motor shaft the axis of which coincides with the direction of tunnelling operation, on both sides of the plate in horizontal and vertical planes passing through motor axis there installed are light-emitting elements directed to the plate side; at that, each unit contains differently directed photo sensors oriented parallel to motor axis.

EFFECT: improving the orientation accuracy of tunnelling system and operating characteristics of the device, and increasing standardisation of the device components.

3 dwg

 

The invention relates to the field of mining industry, in particular to a device for the orientation of the tunnel complexes in the construction of curved tunnels, including the construction of curved tunnels method of hammering.

A device for the orientation of the tunneling shield containing a laser target mounted on the tunneling shield and a laser light source mounted in the launching shaft (patent of great Britain No. 2095720 And from 1982 to class. E21D 9/093).

The disadvantage of this device is the relatively low accuracy of the orientation of the excavation curved tunnels.

The closest technical solution of the essential features is the device for orientation of the tunnel system during the construction of curved tunnels containing blocks with reference sources of laser radiation, the photosensors installed in the starting shaft, a target mounted on a tunnel complex, intermediate laser modules mounted at a distance from each other within the provide line-of-sight built in part of the tunnel, measuring the length of penetration and data channels between the blocks of the system control device and a computer monitor (ROBT No. 4, 2002, the management System SLA-PV jacking pipeline network VMT GmbH).

The disadvantage of this device is the lack of accuracy of the orientation of the complex in the construction of curved surfaces, due to the fact that in the process of hammering out the entire tunnel is in motion and, consequently, on sections of the tunnel there is no fixed reference point, necessary to calculate the coordinates of the tunneling machine.

Task to be solved by the claimed invention is directed, is to improve the accuracy of the orientation of the tunnel complex, the improvement of the operational characteristics of the device and increasing unification of device nodes.

The problem is solved due to the fact that the device for orientation of the tunnel system during the construction of curved tunnels containing located within line of sight and known distance from each other blocks, the extreme of which is rigidly secured, one to the starter shaft, the other on the tunneling shield, intermediate units installed inside the erected part of the tunnel, each block provided with a photosensor, a light-emitting element and the tilt sensor, the device is also equipped with a sensor length of penetration and data channels between the nodes of the computing device and the display unit, each unit is equipped with a disk with a sector symmetrically arranged light-tight slits, the disk I is Yong on the motor shaft, the axis of which coincides with the direction of the shaft on both sides of the disk in the horizontal and vertical planes passing through the axis of the engine, installed light-emitting elements, oriented in the direction of the disk, with each block contains multidirectional photosensors, oriented parallel to the axis of the engine.

Figure 1 presents the layout of the elements of the device in the construction of the tunnel.

Figure 2 presents the design of a single block device.

Figure 3 presents an illustration of the layout of the block.

The device contains blocks 1, 2, 3, the outermost of which has one in the starting shaft 4, the other on the tunneling shield 5. The rest of the blocks 3 is installed within line of sight from each other inside the finished part of the tunnel 6 at a pre-measured distance L1. To measure change in the process of drilling a distance L2 in the construction method of forcing the sensor 7 length of penetration is set in the starting pit at a construction site with lining behind the shield the sensor is mounted directly on the tunneling shield 5. Blocks 1, 2, 3 are interconnected computing unit with display channels.

Each of the blocks 1, 2, 3 contains the disk 8 with sector symmetrically positioned translucent slits 9, the disks 8 are installed on the shaft of the engine in the La 10, the axis of which coincides with the direction of penetration. On both sides of the disk in the horizontal and vertical planes passing through the axis of the engine 10, installed light-emitting elements 11, 12 (in the vertical plane) and the elements 13 and 14 (in the horizontal plane). Light-emitting elements 11 to 14 are oriented in the direction of the disk 8. In addition, the unit contains an inclinometer 15, oriented in the plane of the axis of the engine 10, and two oppositely directed photosensor 16 and 17, the location which allows you to receive light radiation from adjacent blocks. The preferred amount of translucent slits 9 based on the performance of the device based on the selected angular size of the working area units 1, 2 and 3 is maximum. So, when working in the range of 10 angular degrees the number of slots must be 360/20=18. The distance between the disk 8 and the light-emitting elements 11-14 to save the measuring range should not be less than the distance between each element and the axis of rotation of the disk 8.

The device operates as follows.

After installing the unit 1 in the starting shaft 4 and unit 3 on the tunneling shield 5 is the inclusion of these blocks (see figure 1). The distance between the blocks is determined by the gauge length of penetration 7. These blocks are similar to the intermediate blocks 2 and described nor is E. By removal of the tunneling shield 5 with the starting shaft 4 and care of unit 3 due to the curvature of the tunnel 6 from line-of-sight is set to the intermediate unit 2. The distance L2 is registered by the sensor 7, the length of penetration and remembered. With further drilling with the curvature of the tunnel 6 may establish additional intermediate blocks also measure the distance between them.

When the engine 10 unit 2 causes the rotation of the disk 8. Pulsating luminous flux light-emitting elements 11 to 14 through the slit 9 illuminates the photosensors adjacent blocks 1, 3. Since the modulating disk 8 single for multidirectional flows of light, frequency modulation signals generated by the photosensors 16, 17, are the same. The separation of signals from pairs of light-emitting elements 11, 14 and 12, 13 may be due to different values of high-frequency modulation of light beams (different carrier) or split their work time. In the absence of angular deviations and even when the number of data slots 9, the phase shift of the oscillations of the light fluxes is missing. When the change in the relative positions of the blocks 1, 2, 3 there is a change in the phase difference of signals received by the photosensors 16, 17. If this position changes in the plan change signals from the light-emitting elements 13, 14, whic is in its horizontal plane, and from changes in the profile change signals from the light-emitting elements 11, 12 located in the vertical plane. The angular magnitude of the phase shift corresponds to the measured quantity is the angle between lines connecting the locations of the blocks 1-2 and 2-3 blocks. Accounting angles of twist blocks axis parallel to the axis of the tunnel is made by the signal from the inclinometer 15.

The obtained values of the angular positions of mounted units and distances between them uniquely define the position of each block and the linear and angular position of the tunneling machine 5 in relation to the position of unit 1, located in the launching shaft 4. Inaccuracies in the manufacture of the disk 8 are compensated by the repetition of the measurement of the phase shift.

The use of this device for orientation of the tunnel system during the construction of curved tunnels increases the accuracy of the orientation of the tunnel system, improves performance and increases the degree of unification of the device.

The device for orientation of the tunnel system during the construction of curved tunnels containing located within line of sight and known distance from each other blocks, the extreme of which is rigidly secured, one to the starter shaft, the second on the tunneling shield, intermediate units installed inside vostede the ERN part of the tunnel, each unit is equipped with a photosensor, a light-emitting element and the tilt sensor, the device is also equipped with a sensor length of penetration and data channels between the nodes of the computing device and the display unit, wherein each unit is equipped with a disk with a sector symmetrically arranged light-tight slits, the disk is placed on the motor shaft, the axis of which coincides with the direction of the shaft on both sides of the disk in the horizontal and vertical planes passing through the axis of the engine, installed light-emitting elements, oriented in the direction of the disk, with each block contains multidirectional photosensors, oriented parallel to the axis of the engine.



 

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