KR20060067031A - Linear cutting machine for evaluating driving performance of tbm and designing cutterhead of tbm - Google Patents

Abstract

The present invention relates to the most important TBM cutterhead design and to a linear cutting machine that can evaluate the excavation performance of the designed TBM for economical and rapid tunnel boring machine construction. It can simulate various design variables and ground conditions related to TBM faceplate such as thrust of thrust, driving speed, drilling depth per revolution of TBM faceplate, cutter spacing, etc. The present invention relates to a linear cutting test apparatus for deriving the optimal TBM faceplate design factors from the TBM construction conditions and evaluating the excavation performance of the designed TBM. Linear cutting test apparatus for the face plate design and performance evaluation of the TBM according to the present invention is composed of a base frame, a plurality of pillar frames erected to the top of the base frame, the frame is fastened to the plurality of pillar frames Main body; A test piece block on which the test piece bed frame is mounted to the base frame to be movable in a first direction and the test piece block is mounted on the test piece bed frame to be movable in a second direction perpendicular to the first direction; Means for moving the specimen bed frame and the specimen block in a first direction and a second direction, respectively; A cutter bracket mounted to the upper frame, wherein a TBM cutter is rotatably mounted to cut a specimen mounted on the specimen block when the specimen block moves in the second direction; A cutter bracket mounted to the upper frame to which the TBM cutter is mounted so that the TBM cutter cuts the test piece in the second direction when the test piece moves in the second direction, and is perpendicular to the first and second directions; Means for moving in three directions and providing thrust to the cutter bracket in a third direction; The first caught by the TBM cutter when a TBM cutter mounted between the means for providing thrust in the third direction and the cutter bracket and mounted on the cutter bracket cuts a test piece mounted on the test piece block in a second direction; It includes a three-component load cell for measuring the direction and the components of the second direction and the third direction.

Description

LINEAR CUTTING MACHINE FOR EVALUATING DRIVING PERFORMANCE OF TBM AND DESIGNING CUTTERHEAD OF TBM}

1 is a perspective view of a linear cutting test device for evaluating the face plate design and excavation performance of the TBM according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the linear cutting test device for evaluating the face plate design and excavation performance of the TBM according to an embodiment of the present invention.

Figure 3 is a front view of the linear cutting test device for evaluating the face plate design and excavation performance of TBM according to an embodiment of the present invention.

Figure 4 is a side view of the linear cutting test apparatus for the face plate design and excavation performance evaluation of TBM according to an embodiment of the present invention.

Figure 5 is a perspective view of the specimen block of the linear cutting test apparatus for evaluating the face plate design and excavation performance of the TBM according to an embodiment of the present invention.

6A and 6B are diagrams illustrating a cutter bracket of a linear cutting test apparatus for evaluating the face plate design and the excavation performance of a TBM according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view of a third direction displacement gauge of a linear cutting test apparatus for evaluating faceplate design and performance of a TBM according to an embodiment of the present invention. FIG.

8 is a view showing an overall schematic diagram of a linear cutting test apparatus for evaluating the face plate design and excavation performance of TBM according to an embodiment of the present invention.

9 is a plan view of a test piece cut by a linear cutting test device for evaluating the face plate design and the excavation performance of the TBM according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

101: basic frame 102: specimen bed frame

103: specimen block 104, 105, 106: first, second and three-way hydraulic cylinder

107: pillar frame 108: upper frame

109, 111: first and second direction guide rail

110, 112: first and second slide blocks

113: load cell unit 114: cutter bracket

115: TBM cutter 116, 117: first and second shackle

118: rod 119: pressure plate bracket

120: pressure plate 121, 122, 125: first, second and third displacement measuring instrument

210: controller 220: hydraulic unit

The present invention relates to the most important TBM cutterhead design and to a linear cutting machine that can evaluate the excavation performance of the designed TBM for economical and rapid tunnel boring machine construction. It can simulate various design variables and ground conditions related to TBM faceplate such as thrust of thrust, driving speed, drilling depth per revolution of TBM faceplate, cutter spacing, etc. The present invention relates to a linear cutting test apparatus for deriving the optimal TBM faceplate design factors from the TBM construction conditions and evaluating the excavation performance of the designed TBM.

Recent excavation of tunnels and underground spaces replaces existing blasting methods for the purpose of increasing worker stability, reducing civil complaints due to noise and vibration, and reducing air and public affairs. Mechanized construction by the trend is increasing.

However, at present, in Korea, core test equipment and technology development related to tunnel mechanization construction are insufficient, and the situation of TBM design and manufacturing or performance evaluation is dependent on foreign technology. As a result, when the TBM excavation fails to adequately respond to domestic soil conditions, frequent collapse or collapse accidents or unexpected downtime occur, and air and azeotropes increase, resulting in a problem that the excavation efficiency of TBM is reduced.

Therefore, in order to solve these problems, although it is essential to derive optimal TBM faceplate design factors and reliable performance evaluation according to the ground conditions for economical and rapid TBM construction, conventional TBM faceplate design factors derivation and prediction of drilling performance are simply It is only an empirical process based on simple laboratory tests such as uniaxial compressive strength and density of the ground.

In addition, recently, models for predicting the performance of TBM have been developed in Norway and other countries by accumulating a large number of construction data. However, this model is also an empirical model and is suitable for the ground conditions in Norway. There is a limit to the application. In addition, the size of the sample for measuring the total hardness of the rock to be applied to predict the excavation performance of TBM is very small to represent the actual field conditions, it was proved that there is a significant size effect.

The empirical method of deriving the faceplate design factor of TBM and the evaluation performance of TBM is a relatively simple process that can predict the derivation of the faceplate design factor of TBM and the performance of TBM, but i) the limitation of empirical method or empirical model. Due to this, it is impossible to derive the exact TBM faceplate design factors, ii) the reliability of the predictive performance of the excavation performance under various soil conditions is inferior, iii) the sample used in the test is small and cannot represent the actual field conditions. There is no standard large-scale test equipment for deriving the faceplate design factor and predicting the performance, and v) the cutting mechanism of the ground by the cutter is not considered at all.

Therefore, there is an urgent need for the development of a new linear cutting test apparatus that can improve the problems associated with the conventional TBM faceplate design factor derivation and the prediction of the drilling performance as mentioned above.

An object of the present invention is a linear cutting test apparatus capable of carrying out the necessary experiments to derive the essential design factors for TBM faceplate design, such as optimum cutter spacing, optimal thrust, optimal torque, and optimum power according to various ground conditions and mechanical conditions of TBM To provide.                         

Another object of the present invention is to provide a linear cutting test apparatus that can simulate the speed, thrust and the like of the actual TBM.

Still another object of the present invention is to provide a large linear cutting test device that can represent actual ground conditions by excluding the size effect of the test object.

It is still another object of the present invention to provide a linear cutting test apparatus capable of evaluating TBM excavation performance by various cutting tools such as a drag bit as well as a disk cutter as a cutter used in the apparatus.

Such an object of the present invention, the base frame including at least one X-axis guide rail; A test piece bed frame including at least one first slide block coupled to the at least one X axis guide rail, the test piece bed frame movable in the X axis direction, the test piece bed frame including at least one Y axis guide rail thereon; ; A test piece block on which a test piece movable in the Y-axis direction is mounted, including at least one second slide block coupled to the at least one Y-axis guide rail; At least one X-axis hydraulic cylinder connected to the specimen bed frame to simultaneously displace the specimen bed frame and the specimen block in the X-axis direction; A Y-axis hydraulic cylinder connected to the test piece block to displace the test piece block in the Y-axis direction; A plurality of pillar frames fastened to an end of the base frame and erected to an upper portion of the base frame higher than the height of the test piece block and fastened to and supported by the plurality of pillar frames; A load cell unit connected to the Z axis hydraulic cylinder and the Z axis cylinder coupled to the upper frame; A cutter bracket which is connected to the load cell unit and the thrust of the Z-axis hydraulic cylinder is transmitted through the load cell unit, wherein the test piece is moved when the test block on which the test piece is mounted moves in the Y-axis direction by the Y-axis hydraulic cylinder. A cutter bracket to which the TBM cutter for cutting in the axial direction is mounted; A three component load cell mounted on the load cell unit, the three component load cell being connected to a TBM cutter mounted on the cutter bracket and measuring a three component force applied to the TBM cutter when the TBM cutter cuts a test piece; A hydraulic unit for providing hydraulic pressure to the at least one X-axis hydraulic cylinder, the Y-axis hydraulic cylinder and the Z-axis hydraulic cylinder; A controller connected to the hydraulic unit and the three-component load cell, wherein the control unit controls the hydraulic unit to adjust the strength of the hydraulic pressure provided to the X-axis hydraulic cylinder to a predetermined position in the X direction of the test block block connected to the test specimen bed frame. Control the movement speed of the test piece block in the Y direction by increasing or decreasing the strength of the hydraulic pressure provided to the Y-axis hydraulic cylinder in a predetermined step, and controlling the strength of the hydraulic pressure provided to the Z-axis hydraulic cylinder. By controlling the predetermined position in the Z direction of the TBM cutter mounted on the cutter bracket and the thrust in the Z direction of the TBM cutter applied to the test piece mounted on the test piece block to a predetermined value, by the Y-axis hydraulic cylinder When the TBM cutter cuts the specimen mounted on the specimen block by moving the specimen block in the Y direction The TBM cutter of the three components received from the three-component load cell by continuously controlling the hydraulic unit that receives the three-component force applied to the TBM cutter from the three-component load cell, the recording device, and provides the hydraulic pressure to the Z-axis hydraulic cylinder It is achieved by a linear cutting test apparatus for the face plate design and evaluation performance of the TBM including a controller for continuously controlling the thrust in the Z direction to the predetermined value.

The test piece bed frame further includes at least one first latch, and the at least one X-axis hydraulic cylinder is fastened to the at least one first latch so that the hydraulic unit is controlled by the controller to control the X-axis hydraulic cylinder. When the hydraulic pressure is applied to the specimen bed frame and the specimen block simultaneously move in the X-axis direction, and the specimen block further comprises a second latch, the Y-axis hydraulic cylinder is connected to the second latch and the When the hydraulic unit applies hydraulic pressure to the Y-axis hydraulic cylinder by the control, the test piece block moves in the Y-axis direction.

The upper frame has two rods fixed to the lower end of the upper frame, and opening plates respectively inserted at the two rods at both ends thereof, and pressing plate brackets inserted and fixed to the two rods, each having an opening therebetween. And a pressure plate bracket and a pressure plate inserted into the intermediate opening of the pressure plate bracket, and a Z-axis hydraulic cylinder fixed to the upper frame presses the pressure plate to apply a thrust force in the Z direction to the TBM cutter mounted on the cutter bracket. Will be provided.

The linear cutting test apparatus for the face plate design and the excavation performance evaluation of the TBM is composed of an X axis displacement measuring instrument fixed to one end of the base frame and the wire connected to the X axis displacement measuring instrument and the first clasp of the specimen block Further comprising a wire-type X-axis displacement meter for measuring the X-side displacement, consisting of a Y-axis displacement measuring instrument fixed to one end of the test piece bed frame and a wire connected to the Y-axis displacement measuring instrument and the second latch It further includes a wire-type Y-axis displacement meter for measuring the Y-side displacement of the test piece block, LVDT type for measuring the Z-axis displacement of the TBM cutter mounted on the cutter bracket is connected to the top and bottom of the Z-axis hydraulic cylinder ( linear variable displacement transducer type) may further include a Z-axis displacement meter.

In addition, the X-axis displacement meter, the Y-axis displacement meter and the Z-axis displacement meter is connected to the controller, the controller receives the displacement signal measured by the X, Y and Z axis displacement meters, respectively, the test piece block and The position of the TBM cutter mounted to the cutter bracket can be controlled.

An object of the present invention also comprises: a main body comprising a base frame, a plurality of pillar frames erected on top of the foundation frame, and an upper frame fastened to and supported by the plurality of pillar frames; A test piece block on which the test piece bed frame is mounted to the base frame to be movable in a first direction and the test piece block is mounted on the test piece bed frame to be movable in a second direction perpendicular to the first direction; Means for moving the specimen bed frame and the specimen block in a first direction and a second direction, respectively; A cutter bracket mounted to the upper frame, wherein a TBM cutter is rotatably mounted to cut a specimen mounted on the specimen block when the specimen block moves in the second direction; A cutter bracket mounted to the upper frame to which the TBM cutter is mounted so that the TBM cutter cuts the test piece in the second direction when the test piece moves in the second direction, and is perpendicular to the first and second directions; Means for moving in three directions and providing thrust to the cutter bracket in a third direction; The first caught by the TBM cutter when a TBM cutter mounted between the means for providing thrust in the third direction and the cutter bracket and mounted on the cutter bracket cuts a test piece mounted on the test piece block in a second direction; It can be achieved by the linear cutting test apparatus for the face plate design and the evaluation of the excavation performance of the TBM including a three-component load cell measuring the direction and the components of the second and third directions.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments will now be described in detail with reference to the accompanying drawings as examples only.

1 is a perspective view of a linear cutting test apparatus for evaluating the face plate design and excavation performance of the TBM according to an embodiment of the present invention, Figure 2 is a face plate design and excavation performance evaluation of the TBM according to an embodiment of the present invention The exploded perspective view of the linear cutting test apparatus is shown. In addition, Figure 3 is a front view of a linear cutting test device for evaluating the face plate design and excavation performance of TBM according to an embodiment of the present invention, Figure 4 is a face plate design and evaluation performance evaluation of TBM according to an embodiment of the present invention Side view of a linear cutting test apparatus for And, Figure 5 is a perspective view showing a state of the specimen block viewed from the bottom.

1 and 2, the linear cutting test apparatus 100 according to an embodiment of the present invention is built up from the edge of the base frame 101 and the base frame, that is, the corners of the base frame. In the drawings, a plurality of pillar frames 107 and an upper frame 108 fastened to and supported by four pillar frames at an upper portion of the pillar frame are provided.

The test piece bed frame 102 is mounted in the main body so as to be movable in the first direction (or X direction) on the base frame 101, and in the second direction perpendicular to the first direction (or Y direction) above the test piece bed frame. The specimen block 103 is mounted to be movable. The test piece block 103 is mounted with a test piece to be a test object cut by the TBM cutter 115 rotatably mounted to the cutter bracket 114 to be described later.

Specifically, as best seen in FIG. 2, at least one extending in the first direction in the base frame 101 and three first direction guide rails 109 in the drawing are integrally formed with the base frame 101. The test piece bed frame 102 having a plurality of first slide blocks 110 is placed on the bottom. The first slide block 110 of the test piece bed frame 102 is inserted in the first direction guide rail 109 of the base frame 101 with a predetermined gap so that the test piece bed frame 102 is positioned above the base frame 101. It is possible to move back and forth in one direction. Although the first slide block 110 is not clearly shown in the drawings, referring to FIG. 5, which shows the test piece block 103, the first slide block 110 is formed in the same shape as the second slide block 112 of the test piece block.

1 and 2, at least one test piece bed frame 102 extends in a second direction, and in the drawing, two second direction guide rails 111 are integrally formed with the test piece bed frame 102. As shown in FIG. 5, a specimen block 103 having a plurality of second slide blocks 112 is placed thereon. The second slide block 112 of the specimen block 103 is inserted in the second direction guide rail 111 of the specimen bed frame 102 with a predetermined gap so that the specimen block 103 is placed on the specimen bed frame 102. It is possible to move back and forth in two directions.

When the specimen bed frame 102 is moved in the first direction by such a configuration, the specimen block 103 is also moved in the first direction with the same displacement. That is, the specimen block 103 is dependent on the displacement of the specimen bed frame 102 with respect to the first direction, and freely moves without being restrained by the displacement of the specimen bed frame 102 with respect to the displacement in the second direction.

The specimen bed frame 102 and the specimen block 103 may also move the specimen bed frame 102 (refer to the description above, the specimen block) and the specimen block 103 in the first and second directions, respectively. Means 104 and 105 are provided.

2 and 5, the hydraulic cylinder 104 in the first direction is fixed to one end of the base frame 101 in parallel with the first direction, and the hydraulic cylinder is again the test piece bed frame 102. Is fastened to a first clasp 116 provided at an opposite end of the. In addition, the hydraulic cylinder 105 in the second direction is fixed to one end of the test piece bed frame 102 in parallel to the second direction, and this hydraulic cylinder is again the test piece block ( Is fastened to a second clasp 117 provided at an opposite end of 103. These first and second directional hydraulic cylinders 104 and 105 are not shown in the drawing, but are connected to the hydraulic unit 220 through a conduit to receive hydraulic pressure so that the test piece block 103 can be moved in the first and second directions. Can be moved independently.

FIG. 6 is a view illustrating a cutter bracket of a linear cutting test apparatus for evaluating the face plate design and the excavation performance of a TBM according to an embodiment of the present invention. 2 and 6, the upper frame 108 is used to cut the test piece mounted on the test piece block 103 when the test piece block 103 moves in the second direction by the second direction hydraulic cylinder 105. Cutter bracket 114 to which the TBM cutter 115 is rotatably mounted) is installed.

Referring again to FIG. 6, two rods 118 are fixed to the lower end of the upper frame 108, and the pressure plate bracket 119 having an opening in the middle thereof is fixed to the upper frame 108. Is inserted and fixed). The pressure plate 120 is inserted with a gap in the middle opening of the pressure plate bracket 119 fixed to the upper frame 108 in this manner. The load cell unit 113 is fixed to the pressure plate 120 at the lower portion of the pressure plate 120, and the cutter bracket 114 is fixed to the lower portion of the load cell unit 113. As shown in the figure, the cutter bracket 114 is rotatably mounted with a TBM cutter 115 for cutting a test piece.

The upper frame 108 is equipped with means 106 for moving the TMB cutter 115 in the third direction (or Z direction) and for providing thrust in the third direction. Specifically, referring to FIG. 2, a third direction hydraulic cylinder 106 is fixed to the upper frame. When the hydraulic cylinder is provided with hydraulic pressure from the hydraulic unit 220 through an oil pipe, the pressure plate 120 is pressed to the cutter bracket ( The TBM cutter 115 rotatably mounted to the 114 is moved in the third direction and also provides the thrust in the third direction. When thrust is provided in the third direction to the TBM cutter 115 rotatably mounted to the cutter bracket 114 by the third direction hydraulic cylinder 106, the test piece mounted on the test piece block 103 is the second direction hydraulic pressure. As the cylinder 105 moves in the second direction, the TBM cutter 115 cuts the test piece in the second direction.

The 3-directional road cell 124 is mounted in the load cell unit 113. The three-component load cell 124 is connected to the TBM cutter 115 rotatably mounted to the cutter bracket 114 via the cutter bracket 114 so that the TBM cutter 115 when the TMB cutter 115 cuts the test piece. The three-part force acting on, specifically, the slide force in the first direction, the rolling force in the second direction, and the normal force in the third direction are measured.

The cutter bracket 114 coupled to the lower portion of the load cell unit 113 may be fastened with a bolt and the like, so that a bracket suitable for cutters of various sizes and shapes may be used, and thus the applicability of the linear cutting test apparatus according to the present invention may be increased.

The linear cutting test apparatus 100 for the face plate design and the excavation performance evaluation of the TBM according to the present invention is equipped with a displacement meter for measuring the displacement in each direction of the specimen block 103 on which the specimen is mounted.

Specifically, the displacement meter in the first direction is composed of a first direction displacement meter 121 and a wire. First, the first direction displacement gauge 121 is fixed to one end of the base frame 101 as shown in FIG. 1 or 2. do. In addition, the first direction displacement measuring instrument 121 and the test piece bed frame 102, and the first clasp 116 of the portion facing the first direction in parallel with the first direction, are shown in FIG. 5 in parallel with the first direction. The wires are connected in the same way. When the test piece bed frame 102 moves in the increasing direction of the first direction, the wire is stretched, and the extended displacement measuring instrument 121 measures the increased displacement. The same applies to the case in which the specimen bed frame 102 moves in the decreasing direction.

The displacement meter in the second direction is also composed of the second directional displacement meter 122 and the wire 123 in a similar manner to the first directional displacement meter, as shown in FIG. 1 or 2. It is fixed to one end of the base frame 101, the test piece block 103, specifically the second clasp 117 of the second direction displacement measuring instrument 122 and the portion opposite thereto in parallel to the second direction in FIG. The wire 123 is connected in the manner shown. When the test piece block 103 moves in the increasing direction of the second direction, the wire 123 is stretched and the increased displacement is measured by the second direction displacement measuring instrument 122. The same applies to the case in which the specimen block 103 moves in the decreasing direction.

Although the third direction displacement gauge installed in the linear cutting test apparatus 100 for the face plate design and the excavation performance evaluation of the TBM according to an embodiment of the present invention may use various types of displacement meters, a linear variable displacement transducer type (LVDT) It is preferable that it is a displacement meter. Fig. 7 shows a cross section of such an LVDT type third directional displacement meter. The third directional displacement meter is composed of a third directional displacement meter 125 and a thick wire 126 connected to the lower end of the third directional hydraulic cylinder. When the third direction hydraulic cylinder 106 applies the force to the cutter bracket 114 in the third direction to move the TBM cutter 115 rotatably mounted to the cutter bracket 114 in the third direction, the third direction accordingly. The shim 126 connected to the lower end of the hydraulic cylinder 106 is also extended, and the increased displacement is measured by the third direction displacement measuring instrument 125.

The linear cutting test apparatus 100 for the face plate design and the excavation performance evaluation of the TBM according to an embodiment of the present invention is also a hydraulic unit for providing hydraulic pressure to the first, second and three-way hydraulic cylinder as shown in FIG. And a controller 210 that controls the 220 and the first, second and third displacement meters and is connected to the three component load cell.

The controller 210 receives a signal input from the first direction displacement meter and transmits a control signal to the hydraulic unit 220 to move the test piece block 103 to a desired first direction position. The hydraulic unit 220 receiving the control signal from the controller 210 applies the required hydraulic pressure to the first direction hydraulic cylinder 104 to move the test piece block 103 to the desired first direction position.

The controller 210 also receives a signal from the second directional displacement meter and transmits a control signal to the hydraulic unit 220 to move the specimen block 103 to the desired second direction position. The hydraulic unit 220 which receives the control signal from the controller 210 applies the required hydraulic pressure to the second direction hydraulic cylinder 105 to move the test piece block 103 to the desired second direction position.

In such a state, the controller 210 receives a signal input from the third direction displacement meter to adjust the third direction displacement, that is, the cutting depth, of the TBM cutter 115 cutting the specimen mounted on the specimen block 103. A control signal is sent to the hydraulic unit 220 to move the cutter 115 to the desired third direction position. The hydraulic unit 220 receiving the control signal from the controller 210 applies the required hydraulic pressure to the third direction hydraulic cylinder 106 to move the TBM cutter 115 to the desired third direction position. In this process, the controller 210 receives the thrust in the third direction from the three-component load cell 124 and transmits a control signal to the hydraulic unit 220 to provide the desired thrust to the TBM cutter 115 for cutting the test piece. The third direction hydraulic cylinder 106 is controlled.

When the initial experimental setup is completed by the controller 210, the controller 210 linearly cuts the specimen mounted on the specimen block 103 with the TBM cutter 115 rotatably mounted to the actual cutter bracket 114. The second direction displacement of the specimen block 103 is increased to move the specimen block 103 in the second direction at a predetermined speed or desired speed. That is, the controller 210 receives the second direction displacement signal of the test piece block 103 from the second direction displacement meter and increases the second direction displacement of the test piece block 103 by a predetermined value per unit time. By controlling the second direction hydraulic cylinder 105 through) to move the specimen block 103 in the second direction at a desired speed.

In this cutting process, the controller 210 connected to the three-component load cell 124 is a three-part force of the TBM cutter 115 cutting the test piece, that is, a slide force in the first direction and a rolling force in the second direction. And receiving the normal force in the third direction and recording it on the recording device, and further displaying such a three component force through the display device.

Also, in this cutting process, the controller 210 continuously adjusts the position of the TBM cutter 115 in the third direction from the third directional displacement meter to control the cutting depth of the test piece by the TBM cutter 115 to a predetermined constant value. To control the third direction hydraulic cylinder 106 through the hydraulic unit 220, and to control the thrust provided to the TBM cutter 115 to a predetermined constant value from the three-component load cell 124 in the third direction Is continuously received to control the third direction hydraulic cylinder 106 through the hydraulic unit 220.

9 shows a schematic plan view of a test piece mounted on the test piece block 103 cut through this process. 9 shows a linear cut of the test piece in the second direction at various intervals in the first direction.

That is, the linear cutting test apparatus 100 for the face plate design and the evaluation performance of the TBM according to an embodiment of the present invention may adjust the linear cutting interval in the second direction by adjusting the hydraulic cylinder 104 in the first direction. In addition, the cutting speed of the test piece may be adjusted by adjusting the second direction hydraulic cylinder 105, and the cutting depth of the test piece and the thrust of the TBM cutter 115 may be adjusted by adjusting the third direction hydraulic cylinder 106. have.

As described above, the linear cutting test apparatus for the face plate design and the excavation performance evaluation of the TBM according to the present invention is capable of controlling the vertical direction load of the TBM cutter rotatably mounted on the cutter bracket and the conveying direction and speed of the test piece. It can simulate the thrust and the speed of excavation, and provide the basis to derive the optimal design factors of TBM faceplates such as cutter spacing, thrust, torque, etc. of TBM equipment according to the ground conditions. The excavation performance of the TBM equipment actually used can be evaluated.

So far, preferred embodiments of the present invention have been described. However, the preferred embodiments described so far should only be taken as examples. That is, those skilled in the art will be able to derive various modifications with reference to the preferred embodiment of the present invention. Accordingly, the technical scope of the present invention should be interpreted only by the appended claims.

 The present invention can perform the necessary experiments to derive the essential design factors for TBM faceplate design, such as the optimum cutter spacing, optimal thrust, optimal torque, and optimum power according to various ground conditions and mechanical conditions of TBM, the actual speed of TBM , Thrust, etc. can be simulated, and the size of the specimen block can be secured to the required level, thereby eliminating the effect of the size of the specimen mounted on the specimen block to simulate the actual ground conditions, and the cutter bracket can be replaced. In addition to the cutter, it is effective to provide a linear cutting test device capable of evaluating TBM performance by various cutting tools such as drag bits.

Claims (15)

As a linear cutting machine for the face plate design and evaluation of drilling performance of TBM (tunnel boring machine), A base frame including at least one X-axis guide rail, A test piece bed frame including at least one first slide block coupled to the at least one X axis guide rail, the test piece bed frame movable in the X axis direction, the test piece bed frame including at least one Y axis guide rail thereon; , A test piece block on which the test piece movable in the Y-axis direction is mounted, including at least one second slide block coupled to the at least one Y-axis guide rail; At least one X-axis hydraulic cylinder fixed to one end of the base frame and connected to the specimen bed frame to simultaneously displace the specimen bed frame and the specimen block in the X-axis direction; A Y-axis hydraulic cylinder fixed to one end of the specimen bed frame and connected to the specimen block to displace the specimen block in the Y-axis direction; A plurality of pillar frames fastened to an end of the base frame and higher than the height of the test piece block and erected to an upper portion of the base frame and fastened to and supported by the plurality of pillar frames; A load cell unit connected to the Z-axis hydraulic cylinder and the Z-axis hydraulic cylinder coupled to the upper frame; A cutter bracket connected to the load cell unit to transmit the thrust of the Z-axis hydraulic cylinder through the load cell unit, wherein the test piece is moved when the test block on which the test piece is mounted moves in the Y-axis direction by the Y-axis hydraulic cylinder A cutter bracket to which the TBM cutter for cutting in the axial direction is rotatably mounted; A three-component load cell mounted on the load cell unit, the three-component load cell connected to the TBM cutter mounted on the cutter bracket to measure the three-component force applied to the TBM cutter when the TBM cutter cuts the test piece; A hydraulic unit for providing hydraulic pressure to the at least one X-axis hydraulic cylinder, the Y-axis hydraulic cylinder, and the Z-axis hydraulic cylinder; A controller connected to the hydraulic unit and the three-component load cell, wherein the control unit controls the hydraulic unit to adjust the strength of the hydraulic pressure provided to the X-axis hydraulic cylinder to a predetermined position in the X direction of the test block block connected to the test specimen bed frame. Control the movement speed of the test piece block in the Y direction by increasing or decreasing the strength of the hydraulic pressure provided to the Y-axis hydraulic cylinder in a predetermined step, and controlling the strength of the hydraulic pressure provided to the Z-axis hydraulic cylinder. By controlling the predetermined position in the Z direction of the TBM cutter mounted on the cutter bracket and the thrust in the Z direction of the TBM cutter applied to the test piece mounted on the test piece block to a predetermined value, by the Y-axis hydraulic cylinder When the TBM cutter cuts the specimen mounted on the specimen block by moving the specimen block in the Y direction The TBM cutter of the three components received from the three-component load cell by continuously receiving the three-components applied to the TBM cutter from the three-component load cell and recording them in the recording device, and continuously controlling the hydraulic unit that provides hydraulic pressure to the Z-axis hydraulic cylinder. And a controller for continuously controlling the thrust in the Z direction to the predetermined value. Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM. The hydraulic test system of claim 1, wherein the test piece bed frame further includes at least one first latch, and the at least one X-axis hydraulic cylinder is coupled to the at least one first latch and is controlled by the controller. When the hydraulic pressure is applied to the X-axis hydraulic cylinder, the test piece bed frame and the test piece block simultaneously move in the X-axis direction, linear cutting test apparatus for the face plate design and evaluation performance of TBM. 3. The test piece block according to claim 2, wherein the test piece block further includes a second clasp, and the Y-axis hydraulic cylinder is connected to the second clasp so that the hydraulic unit applies hydraulic pressure to the Y-axis hydraulic cylinder by the control of the controller. Linear cutting test apparatus for the face plate design and excavation performance evaluation of TBM, characterized in that for moving the specimen block in the Y-axis direction. According to claim 2 or 3, wherein the upper frame is inserted into the two rods having two rods fixed to the lower end of the upper frame and openings respectively inserted in the two rods at both ends thereof. A pressure plate bracket which is fixed, further comprising a pressure plate bracket having an opening in the middle thereof, and a pressure plate inserted into the intermediate opening of the pressure plate bracket, and a Z-axis hydraulic cylinder fixed to the upper frame presses the pressure plate to the cutter bracket. Linear cutting test apparatus for the face plate design and excavation performance evaluation of TBM, characterized in that to provide the thrust in the Z direction to the TBM cutter mounted on the. 5. The wire-shaped X according to claim 4, comprising an X axis displacement measuring instrument fixed to one end of the base frame, a wire connected to the X axis displacement measuring instrument and the first clasp, and measuring X displacement of the test piece block. Linear cutting test apparatus for the face plate design and excavation performance evaluation of TBM, further comprising an axial displacement meter. According to claim 5, Y-axis displacement measuring instrument is fixed to one end of the test piece bed frame, the Y-axis displacement measuring device and the wire type to measure the Y-side displacement of the test piece block of the wire connected to the second clasp Linear cutting test apparatus for the face plate design and excavation performance evaluation of TBM, further comprising a Y-axis displacement meter. The method of claim 6, further comprising a linear variable displacement transducer (LVDT) Z-axis displacement meter connected to the top and bottom of the Z-axis hydraulic cylinder to measure the Z-axis displacement of the TBM cutter mounted on the cutter bracket. Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM. 8. The displacement measuring apparatus of claim 7, wherein the X-axis displacement meter, the Y-axis displacement meter, and the Z-axis displacement meter are connected to the controller, the controller receiving respective displacement signals measured at the X, Y, and Z axis displacement meters to a desired position. Linear cutting test apparatus for the face plate design and evaluation performance of the TBM, characterized in that for controlling the position of the TBM cutter mounted on the specimen block and the cutter bracket. Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM, A main body composed of a base frame, a plurality of pillar frames erected on top of the foundation frame, and an upper frame fastened to and supported by the plurality of pillar frames; A test piece block on which the test piece bed frame is mounted to the base frame to be movable in a first direction, and the test piece block is mounted on the test piece bed frame to be movable in a second direction perpendicular to the first direction; Means for moving the specimen bed frame and the specimen block in a first direction and a second direction, respectively; A cutter bracket mounted to the upper frame, wherein a TBM cutter is rotatably mounted to cut a specimen mounted on the specimen block when the specimen block moves in the second direction; A cutter bracket mounted to the upper frame to which the TBM cutter is mounted so that the TBM cutter cuts the test piece in the second direction when the test piece moves in the second direction, and is perpendicular to the first and second directions; Means for moving in three directions and providing thrust to the cutter bracket in a third direction; The first caught by the TBM cutter when a TBM cutter mounted between the means for providing thrust in the third direction and the cutter bracket and mounted on the cutter bracket cuts a test piece mounted on the test piece block in a second direction; Including a three-component load cell for measuring the component of the direction and the second and third directions, Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM. 10. The apparatus of claim 9, wherein the means for moving the specimen bed frame in the first direction, the means for moving the specimen block in the second direction, and the means for providing thrust to the cutter bracket in the third direction. A linear cutting test apparatus for face plate design and excavation performance evaluation of TBM, characterized in that the hydraulic cylinder. The method of claim 10, A hydraulic unit for providing hydraulic pressure to each of the hydraulic cylinders; Further comprising a controller connected to the hydraulic unit and the three-component load cell, Here, the controller controls the hydraulic unit to control the test piece block mounted on the test piece bed frame to a predetermined position in the first direction by adjusting the strength of the hydraulic pressure provided to the first direction hydraulic cylinder, Increase the strength of the hydraulic pressure provided to the two-way hydraulic cylinder in a predetermined step to control the moving speed of the test piece block in the second direction, and adjust the strength of the hydraulic pressure provided to the third-directional hydraulic cylinder to the cutter To control the predetermined position in the third direction of the TBM cutter mounted on the bracket and the thrust in the third direction of the TBM cutter on the test piece mounted on the test piece block to a predetermined value, When the TBM cutter cuts the test piece mounted on the test piece block by moving the test piece block in the second direction by the second direction hydraulic cylinder, the three-part force applied to the TBM cutter is transmitted from the three-component load cell and recorded. The thrust force in the Z direction applied to the TBM cutter among the three components transmitted from the three-component load cell by continuously controlling the hydraulic unit for recording the device and supplying the hydraulic pressure to the third direction hydraulic cylinder. Characterized in that for controlling, Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM. 12. The apparatus of claim 11, further comprising: a first directional displacement meter fixed to one end of the base frame; and connected to the test piece bed frame facing the first directional displacement meter and the first directional displacement meter in parallel with the first direction. The linear cutting test device for the face plate design and evaluation performance of the TBM, characterized in that it further comprises a wire-shaped first direction displacement meter composed of a wire to measure the displacement in the first direction of the specimen block. 13. The apparatus of claim 12, further comprising: a second direction displacement measuring instrument fixed to one end of the test piece bed frame and the test piece bed facing the second direction displacement measuring instrument and the second direction displacement measuring meter in parallel with the second direction. And a wire-shaped second direction displacement meter configured to measure a second direction displacement of the test piece block. 15. The method of claim 13, further comprising an LVDT type third directional displacement meter connected to the upper and lower ends of the third directional hydraulic cylinder to measure a third directional displacement of the TBM cutter mounted to the cutter bracket. Linear cutting test apparatus for face plate design and excavation performance evaluation of TBM. 15. The displacement measuring apparatus of claim 14, wherein the first directional displacement meter, the second directional displacement meter, and the three-way displacement meter are connected to the controller, the controller measuring displacements measured in the first, second and third directional displacement meters, respectively. Receiving a signal to control the position of the TBM cutter mounted on the specimen block and the cutter bracket to the desired position, the linear cutting test device for the face plate design and evaluation performance of the TBM.

Images