Impact force measuring device for tunnels and method of use thereof

Abstract

The application relates to an anti-impact force measuring device for a tunnel and a use method thereof, which comprises a support for being installed on the inner wall of the tunnel, a measuring device for measuring the tunnel, a protective cover adjustably installed on the support and covering the measuring device, the protective cover being provided with a detection hole for a laser beam emitted by the measuring device to pass through, the protective cover being moved and adjusted to offset the impact wave in the tunnel, and a plurality of guide blocks fixed to the outer wall of the protective cover, the top surface of the guide blocks being inclined, i.e. the elevation of the part close to the protective cover is higher than the elevation of the part far from the protective cover, so that the falling rocks in the tunnel slide down along the top surface of the guide blocks. The anti-impact force measuring device can reduce the influence of the impact wave and vibration on the measuring device, prolong the service life of the measuring device, and ensure the measurement accuracy of the measuring device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, in particular to a tunnel impact resistance measuring device and a method thereof. BACKGROUND

[0002] Tunnel monitoring measurement is an essential construction procedure in the tunnel construction process, which is used to monitor the surrounding rock and support state of each construction stage of the tunnel to ensure construction safety. Through the monitoring and evaluation of the stability state of the surrounding rock support system, it can also provide basis for the adjustment of the design parameters of the primary support and secondary lining, determine the construction time of the secondary lining and inverted arch, and achieve the purposes of ensuring construction and structure safety, guiding construction sequence, and facilitating construction management.

[0003] At present, the tunnel monitoring measurement equipment is usually installed directly on the inner wall of the tunnel. However, when blasting operation is carried out in the tunnel, the shock wave and vibration can easily damage the equipment. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a tunnel impact resistance measuring device and a method thereof, which solves the problem that the shock wave and vibration in the tunnel easily damage the measurement equipment. By providing an impact resistance measuring device, the influence of the shock wave and vibration on the measurement equipment is reduced, the service life of the measurement equipment is prolonged, and the measurement accuracy of the measurement equipment is ensured.

[0005] The technical solution to achieve the above-mentioned purpose is:

[0006] The present application provides a tunnel impact resistance measuring device, which comprises:

[0007] a bracket for installation on the inner wall of the tunnel;

[0008] a measurement equipment installed on the bracket and used for measuring the tunnel;

[0009] a protective cover adjustably installed on the bracket and covering the measurement equipment, the protective cover being provided with a detection hole through which the laser beam emitted by the measurement equipment passes, and the protective cover being moved and adjusted to offset the shock wave in the tunnel; and

[0010] a plurality of guide blocks fixed to the outer wall of the protective cover, the top surface of the guide blocks being inclined such that the part close to the protective cover has a higher elevation than the part away from the protective cover, so that the falling rocks in the tunnel slide down along the top surface of the guide blocks.

[0011] The tunnel anti-impact force measuring device of the present application can adjust the movement of the protective cover to offset the shock wave received by the protective cover, and when there are falling rocks in the tunnel, the falling rocks can slide down along the top surface of the guide block to avoid damaging the measuring equipment, thereby solving the problem that the shock wave and vibration in the tunnel can easily damage the measuring equipment.

[0012] The tunnel anti-impact force measuring device of the present application further comprises a fixed ring fixedly arranged on the support and located in the protective cover, and a plurality of first springs connected between the fixed ring and the inner wall of the protective cover.

[0013] When the protective cover receives a shock wave, the first springs are extended and retracted to drive the protective cover to move back and forth along the support, thereby offsetting the shock wave.

[0014] The tunnel anti-impact force measuring device of the present application further comprises a bearing connected between the inner wall of the protective cover and the plurality of first springs, and the protective cover rotates relative to the first springs through the bearing to offset the shock wave.

[0015] The tunnel anti-impact force measuring device of the present application further comprises a plurality of movable rods penetrating the support and partially extending into the protective cover, a connecting plate connected to the end of the extending portion of the plurality of movable rods, and a second spring connected between the connecting plate and the support and sleeved on the movable rods, and the measuring equipment is installed on the top of the connecting plate.

[0016] When the support receives a shock wave, the second spring is extended and retracted to drive the movable rods and the connecting plate to move up and down, thereby offsetting the shock wave.

[0017] The tunnel anti-impact force measuring device of the present application further comprises a plurality of through holes corresponding to the connecting plate and opened in the support, and a fan blade rotatably installed on the support and located above the plurality of through holes.

[0018] The airflow generated by the up-and-down movement of the connecting plate pushes the fan blade to rotate to offset the impact of the airflow.

[0019] The tunnel anti-impact force measuring device of the present application further comprises a mounting plate for mounting on the inner wall of the tunnel, a fixed rod fixed to the mounting plate and extending outward, a fixed plate mounted on the end of the fixed rod away from the mounting plate and horizontally arranged, an opening corresponding to the protective cover and opened in the fixed plate, and a support plate detachably mounted on the fixed plate and used to block the opening, and the measuring equipment is mounted on the top of the support plate.

[0020] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises a clamping groove formed in the bottom surface of the fixing plate and communicated with the opening, a protruding plate fixed to the side of the supporting plate and clamped in the clamping groove, and a bolt screwed with the protruding plate and the fixing plate.

[0021] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises an L-shaped plate adjustably installed at one end of the fixing plate, and the other end of the L-shaped plate abuts against the bottom of the bolt.

[0022] By moving the L-shaped plate, the L-shaped plate is staggered with the bolt, so that the bolt can be removed, and the fixing plate is separated from the supporting plate.

[0023] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises:

[0024] The groove is formed in the fixing plate;

[0025] The positioning rod is horizontally arranged and fixed in the groove, and the L-shaped plate is sleeved on the positioning rod to move back and forth along the positioning rod; and

[0026] The third spring is sleeved on the positioning rod, one end of the third spring is fixed to the side of the L-shaped plate away from the bolt, and the other end of the third spring is fixedly connected to the inner wall of the groove.

[0027] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises:

[0028] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises:

[0029] When the impact wave is generated in the tunnel, the protective cover is moved and adjusted to offset the impact wave, and the falling rocks in the tunnel slide downward along the top surface of the guide block;

[0030] The measuring device emits a laser beam, and the laser beam is emitted outward through the detection hole to measure the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises:

[0032] Figure 2 The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises: DETAILED DESCRIPTION

[0033] The tunnel impact-resistant force measuring device further improves the fixing plate, and further comprises:

[0034] Reference Figure 1The tunnel anti-impact force measuring device and the use method thereof are provided, the impact wave received by the protective cover is offset by the movement adjustment of the protective cover, in addition, when there is rockfall in the tunnel, the rockfall can slide down along the top surface of the guide block to avoid damaging the measuring equipment, the problem that the impact wave and vibration in the tunnel easily damage the measuring equipment is solved, the impact wave and vibration are reduced by providing the anti-impact force measuring device to reduce the influence of the impact wave and vibration on the measuring equipment, the service life of the measuring equipment is prolonged, and the measurement accuracy of the measuring equipment is ensured. The tunnel anti-impact force measuring device will be described below in combination with the drawings.

[0035] Reference Figure 1 , Figure 1 It is a front view of the tunnel anti-impact force measuring device. The tunnel anti-impact force measuring device will be described below in combination with Figure 1 .

[0036] As Figure 1 shown, the tunnel anti-impact force measuring device of the present application comprises:

[0037] a support 11 for being installed on the inner wall of the tunnel;

[0038] a measuring equipment 12 for measuring the tunnel, which is installed on the support 11;

[0039] a protective cover 13 for covering the measuring equipment 12 and being adjustably installed on the support 11, the protective cover 13 is provided with a detection hole for the laser beam emitted by the measuring equipment to pass through, and the protective cover 13 is moved to offset the impact wave in the tunnel; and

[0040] a plurality of guide blocks 14 fixed to the outer wall of the protective cover 13, the top surface of the guide block 14 is inclined, that is, the elevation of the part close to the protective cover 13 is higher than the elevation of the part far from the protective cover 13, so that the rockfall in the tunnel slides down along the top surface of the guide block 14.

[0041] As a preferred embodiment of the present application, it further comprises a fixed ring 15 fixedly arranged on the support 11 and located in the protective cover 13, and a plurality of first springs 151 connected between the fixed ring 15 and the inner wall of the protective cover 13;

[0042] When the protective cover 13 receives the impact wave, the first spring 151 is stretched and contracted to drive the protective cover 13 to move back and forth along the support 11, so as to offset the impact wave.

[0043] Specifically, it further comprises a bearing 131 connected between the inner wall of the protective cover 13 and the plurality of first springs 151, and the protective cover 13 rotates relative to the first spring 151 through the bearing 131 to offset the impact wave.

[0044] Further, a plurality of movable rods 16 are arranged in the bracket 11 and partially extend into the protective cover 13, a connecting plate 161 is connected to the end of the extending part of the movable rods 16, and a second spring 162 is connected between the connecting plate 161 and the bracket 11 and sleeved on the movable rods 16, and the measuring device 12 is arranged on the top of the connecting plate 161;

[0045] When the bracket 11 is impacted by a shock wave, the second spring 162 is extended and contracted to drive the movable rods 16 and the connecting plate 161 to move up and down, so as to offset the shock wave.

[0046] Specifically, a plurality of through holes 1142 are arranged in the bracket 11 corresponding to the connecting plate 161, and a fan 1143 is rotatably arranged on the bracket 11 and located above the through holes 1142;

[0047] The airflow generated by the up-and-down movement of the connecting plate 161 drives the fan 1143 to rotate, so as to offset the impact of the airflow, and if the impact airflow enters the protective cover 13 from the through holes 1142, the fan 1143 is also driven to rotate, so as to offset the impact airflow.

[0048] Further, the bracket 11 comprises a mounting plate 111 arranged on the inner wall of the tunnel, a fixing rod 112 fixed to the mounting plate 111 and extending outward, a fixing plate 113 arranged on the end of the fixing rod 112 away from the mounting plate 111 and horizontally arranged, an opening arranged in the fixing plate 113 corresponding to the protective cover 13, and a support plate 114 detachably arranged on the fixing plate 113 and arranged to block the opening, and the measuring device 12 is arranged on the top of the support plate 114.

[0049] Specifically, a clamping groove is arranged in the bottom surface of the fixing plate 113 and communicates with the opening, a protruding plate is fixed to the side of the support plate 114 and clamped in the clamping groove, and a bolt 1141 is screwed to the protruding plate and the fixing plate 113.

[0050] Further, in combination with Figure 2 as shown, an L-shaped plate 115 is arranged on the fixing plate 113 in a position-adjustable manner, and the other end of the L-shaped plate 115 abuts against the bottom of the bolt 1141.

[0051] By moving the L-shaped plate 115, the L-shaped plate 115 is staggered with the bolt 1141, so that the bolt 1141 can be removed, and the fixing plate 113 is separated from the support plate 114.

[0052] Specifically, it further comprises: a groove 1131 formed in the fixed plate 113; a positioning rod 1133 horizontally arranged and fixed in the groove 1131, an L-shaped plate 115 being sleeved on the positioning rod 1133 to move back and forth along the positioning rod 1133; and a third spring 1132 sleeved on the positioning rod 1133, one end of the third spring 1132 being fixed to a side of the L-shaped plate 115 away from the bolt 1141, and the other end of the third spring 1132 being fixedly connected to an inner wall of the groove 1131.

[0053] Preferably, a plurality of the guide blocks 14 are arranged along the height direction of the protective cover 13, and the width of the guide block 14 is greater than the width of the fixed plate 113, so as to prevent the falling rocks from rolling onto the fixed plate 113.

[0054] The specific implementation method of the present application is as follows:

[0055] The measuring device 12 is installed on the connecting plate 161, and since the connecting plate 161 is installed on the support plate 114, the support plate 114 is blocked at the opening of the fixed plate 113, the L-shaped plate 115 is moved along the positioning rod 1133, so that the third spring 1132 is compressed, and the bolt 1141 can be screwed into the convex plate and the fixed plate 1133, thereby fixedly connecting the support plate 114 and the fixed plate 113, the L-shaped plate 115 is loosened, the third spring 1132 pushes the L-shaped plate 115 to move towards the bolt 1141, so that the L-shaped plate 115 abuts against the bottom surface of the bolt 1141, thereby preventing the bolt 1141 from being pulled out, and at this time, the measuring device 12 is located in the protective cover 13;

[0056] When the shock wave is generated in the tunnel, the movable rod 16 and the connecting plate 161 move up and down, so that the second spring 162 is stretched and contracted, thereby being able to offset part of the shock wave;

[0057] The protective cover 13 can rotate relative to the support 11 through the bearing 131 to offset part of the impact of the shock wave or the falling rocks, and the protective cover 13 can move back and forth along the top surface of the fixed plate 113, at this time, the first spring 151 is stretched and contracted to offset part of the impact force;

[0058] When the shock wave is generated, the impact airflow is generated, and when the connecting plate 161 moves up and down, the airflow is also generated, the airflow can flow outwards through the through hole 1142, and the airflow can also drive the fan blade 1143 to rotate, thereby converting the wind energy into rotational kinetic energy, so as to consume the impact airflow;

[0059] When the falling rocks are generated, the falling rocks can slide downwards along the top surface of the guide block 14, thereby avoiding falling onto the fixed plate 113, and also preventing the falling rocks from damaging the measuring device 12.

[0060] The present application also provides a use method of the tunnel anti-impact force measuring device, which comprises the following steps:

[0061] The impact force measuring device is provided with the support 11 installed on the inner wall of the tunnel;

[0062] When the shock wave is generated in the tunnel, the protection cover 13 is moved to offset the shock wave, and the falling rocks in the tunnel slide down along the top surface of the guide block 14;

[0063] The measuring device 12 emits a laser beam, and the laser beam is emitted outward through the detection hole to measure the tunnel.

[0064] The use method provided by the present application is as follows:

[0065] The measuring device 12 is installed on the connecting plate 161, and since the connecting plate 161 is installed on the support plate 114, the support plate 114 is blocked in the opening of the fixed plate 113, the L-shaped plate 115 is moved along the positioning rod 1133, so that the third spring 1132 is compressed, and the bolt 1141 can be screwed on the convex plate and the fixed plate 1133, thereby fixing the connecting support plate 114 and the fixed plate 113, the L-shaped plate 115 is loosened, the third spring 1132 pushes the L-shaped plate 115 to move in the direction close to the bolt 1141, so that the L-shaped plate 115 abuts against the bottom surface of the bolt 1141, thereby preventing the bolt 1141 from being pulled out outward, and at this time, the measuring device 12 is located in the protection cover 13;

[0066] When the shock wave is generated in the tunnel, the movable rod 16 and the connecting plate 161 move up and down, so that the second spring 162 is stretched and contracted, thereby being able to offset part of the shock wave;

[0067] And the protection cover 13 can rotate relative to the support 11 through the bearing 131 to offset part of the shock wave or the impact of the falling rocks, and the protection cover 13 can move back and forth along the top surface of the fixed plate 113, at this time, the first spring 151 is stretched and contracted to offset part of the impact force;

[0068] When the shock wave is generated, the impact airflow is generated, and when the connecting plate 161 moves up and down, the airflow is also generated, the airflow can flow outwards through the through hole 1142, and the airflow can also drive the fan blade 1143 to rotate, thereby converting the wind energy into rotational kinetic energy to consume the impact airflow;

[0069] When the falling rocks are generated, the falling rocks can slide down along the top surface of the guide block 14, thereby avoiding falling on the fixed plate 113, and also preventing the falling rocks from damaging the measuring device 12.

[0070] The application is described in detail above with reference to the drawings. Those skilled in the art can make various changes to the application according to the above description. Therefore, some details in the embodiments should not be regarded as limiting the application, and the scope of protection of the application is defined by the appended claims.

Claims

1. A device for measuring the impact resistance of a tunnel, characterized in that, include: Supports for installation on the inner wall of a tunnel; Measurement equipment mounted on the bracket for measuring the tunnel; A protective cover is mounted on the bracket in an adjustable position and covers the measuring equipment. The protective cover has a detection hole for the laser beam emitted by the measuring equipment to pass through. The protective cover can be moved and adjusted to counteract the shock wave in the tunnel. as well as Several guide blocks are fixed to the outer wall of the protective cover. The top surface of the guide blocks is inclined so that the elevation of the part near the protective cover is higher than the elevation of the part away from the protective cover. As a result, the falling rocks in the tunnel slide down along the top surface of the guide blocks. It also includes a fixing ring fixedly disposed on the bracket and located inside the protective cover, and a plurality of first springs connected between the fixing ring and the inner wall of the protective cover; When the protective cover is subjected to a shock wave, the first spring extends and retracts, causing the protective cover to move back and forth along the bracket, thereby offsetting the shock wave. It also includes bearings connected between the inner wall of the protective cover and a plurality of the first springs, the protective cover rotating relative to the first springs via the bearings to offset the shock wave; It also includes a plurality of movable rods passing through the bracket and partially extending into the protective cover, a connecting plate connected to the ends of the extended portions of the plurality of movable rods, and a second spring connected between the connecting plate and the bracket and sleeved on the movable rods, wherein the measuring device is mounted on the top of the connecting plate; When the bracket is subjected to a shock wave, the second spring extends and retracts, thereby causing the movable rod and the connecting plate to move up and down, thus offsetting the shock wave. It also includes a plurality of through holes corresponding to the connecting plate and formed in the bracket, and fan blades rotatably mounted on the bracket and located above the plurality of through holes; The airflow generated by the up-and-down movement of the connecting plate drives the fan blades to rotate, thereby counteracting the impact of the airflow. The impacting airflow enters the protective cover through the through hole and also drives the fan blades to rotate, thus counteracting the impacting airflow. The bracket includes a mounting plate for installation on the inner wall of the tunnel, a fixing rod fixed to the mounting plate and extending outward, a horizontal fixing plate installed at the end of the fixing rod away from the mounting plate, an opening corresponding to the protective cover and formed in the fixing plate, and a support plate detachably installed on the fixing plate for sealing the opening, and the measuring device is installed on the top of the support plate. It also includes a slot formed on the bottom surface of the fixing plate and connected to the opening, a protruding plate fixed to the side of the support plate and engaged in the slot, and bolts screwed into the protruding plate and the fixing plate; It also includes an L-shaped plate that is adjustable at one end and mounted on the fixing plate, with the other end of the L-shaped plate abutting against the bottom of the bolt; By moving the L-shaped plate to offset it from the bolt, the bolt can be removed, allowing the fixing plate to detach from the support plate. Also includes: A groove is formed in the fixing plate; A positioning rod is horizontally positioned and fixed within the groove; the L-shaped plate is sleeved on the positioning rod to move back and forth along the positioning rod; and A third spring is sleeved on the positioning rod, one end of which is fixed to the side of the L-shaped plate away from the bolt, and the other end of which is fixed to the inner wall of the groove; The measuring device is installed on the connecting plate. Since the connecting plate is installed on the support plate, the support plate is sealed in the opening of the fixed plate. The L-shaped plate is moved along the positioning rod, so that the third spring is compressed and the bolt can be screwed into the protruding plate and the fixed plate, thereby fixing the support plate and the fixed plate. The L-shaped plate is loosened, and the third spring pushes the L-shaped plate to move closer to the bolt, so that the L-shaped plate abuts against the bottom surface of the bolt, thereby preventing the bolt from coming out. At this time, the measuring device is located inside the protective cover.

2. A method of using the impact resistance measuring device for tunnels as described in claim 1, characterized in that, Includes the following steps: Provide the impact resistance force measuring device, and install the bracket on the inner wall of the tunnel; When a shock wave is generated inside the tunnel, the protective cover is moved and adjusted to counteract the shock wave, and the falling rocks inside the tunnel slide down along the top surface of the guide block. The measuring device emits a laser beam, which is emitted outward through the detection hole to measure the tunnel.

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