Device for monitoring vibration of adjacent dams during tunnel blasting operation

Abstract

The utility model aims to provide a vibration monitoring device for adjacent dams during tunnel blasting operation, which comprises a blasting vibration meter body, a protection bin and a three-dimensional vector sensor, a plurality of fixing seats are arranged on the side wall of the protection bin, fixing bolts are arranged in the fixing seats in a penetrating manner, and the fixing bolts are used for going deep into soil at the top of a large slope dam; a sponge mat is horizontally placed in the protection bin, and the blasting vibration meter body is arranged on the sponge mat; the three-way vector sensor is arranged on the large slope dam crest soil outside the protection bin, and the three-way vector sensor is in signal connection with the blasting vibration meter body through a transmission wire. According to the utility model, the three-dimensional vector sensor and the blasting vibration meter body are separately arranged, so that the detection precision and the stability are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting monitoring, in particular to a vibration monitoring device for a dam adjacent to a tunnel blasting operation. Background Art

[0002] During the tunnel blasting operation, damage will be caused to the adjacent dam. In serious cases, it will affect the stability of the dam, and this damage is difficult to be seen intuitively. As an important building, the safety of the reservoir dam is extremely important to the lives and property of nearby people. Especially after water storage, the dam body needs to withstand a considerable water load. If it is affected by blasting vibration, it will have an adverse effect on its stability. At present, the instruments used for blasting vibration detection are generally integrated with the detection port and the instrument body. This means that the instrument body will be affected by the vibration of the dam, resulting in unstable test results. There is also a way to separate the detection port and the instrument body, but the stability of the instrument body does not achieve the desired degree of vibration mitigation, resulting in the detection accuracy and stability of the detection instrument to be improved. Utility Model Content

[0003] The utility model aims to provide a vibration monitoring device for a dam adjacent to a tunnel blasting operation, in which a three-way vector sensor is separated from a blasting vibrometer body, thereby greatly improving the detection accuracy and stability.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a vibration monitoring device for a dam adjacent to a tunnel blasting operation, comprising a blasting vibrometer body, a protection chamber and a three-dimensional vector sensor, wherein a plurality of fixing seats are arranged on the side wall of the protection chamber, and fixing bolts are penetrated through the fixing seats, and the fixing bolts are used to penetrate into the soil on the top of the steep dam; a sponge pad is horizontally placed in the protection chamber, and the blasting vibrometer body is arranged on the sponge pad; the three-dimensional vector sensor is arranged on the soil on the top of the steep dam outside the protection chamber, and the three-dimensional vector sensor is connected to the blasting vibrometer body for signals through a transmission wire.

[0005] Preferably, a movable compartment cover is provided on the top of the protection compartment, and a draw buckle is provided on the compartment cover.

[0006] Preferably, the bin cover material is tempered glass.

[0007] Preferably, the fixing bolt comprises a rotating rod and a bolt, and the bolt is arranged at the bottom of the rotating rod.

[0008] Preferably, a turning handle is provided on the top of the turning rod.

[0009] Preferably, four supporting feet arranged in a rectangular shape are provided at the bottom of the protection compartment.

[0010] Preferably, the fixing seats are arranged in a rectangular shape as a whole.

[0011] The beneficial effects of the utility model are:

[0012] This monitoring device separates the three-dimensional vector sensor from the blasting vibrometer body, which not only ensures that the three-dimensional vector sensor fits the dam deeply and vibrates with it, ensuring the detection accuracy, but also ensures the stability of the blasting vibrometer body, which is not affected by the vibration of the dam. It also avoids the contamination of the blasting vibrometer body and increases the service life of the blasting vibrometer body. In addition, multiple vibration-absorbing means such as fixing bolts, sponge pads, and feet are set to ensure the stability of the blasting vibrometer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is the front view of the utility model.

[0016] In the figure: 1. turning handle, 2. turning rod, 3. bolt, 4. supporting foot, 5. blasting vibration meter body, 6. pull buckle, 7. transmission wire, 8. three-way vector sensor, 9. sponge pad, 10. protective compartment, 11. compartment cover. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used in this article should be the usual meanings understood by people with general skills in the technical field to which the utility model belongs. The meaning of "multiple" used in the patent application specification and claims of this utility model is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front end", "rear end", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the utility model without substantial changes in the technical content.

[0020] The present invention is further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0021] Embodiment 1:

[0022] The utility model discloses a vibration monitoring device for a dam adjacent to a tunnel during blasting operation. Figure 1 , 2 As shown, embodiment 1 mainly includes a blasting vibrometer body 5, a protection chamber 10 and a three-dimensional vector sensor 8. The bottom of the protection chamber 10 is provided with four supporting legs 4 arranged in a rectangular shape. The side wall of the protection chamber 10 is provided with a plurality of fixing seats arranged in a rectangular shape as a whole. The fixing seats are penetrated with fixing bolts, which are used to penetrate into the soil on the top of the large slope dam to ensure the stability of the protection chamber 10. The fixing bolt includes a rotating rod 2 and a bolt 3, and the bolt 3 is arranged at the bottom of the rotating rod 2. The top of the rotating rod 2 is provided with a rotating handle 1.

[0023] A sponge pad 9 is placed horizontally in the protection chamber 10, and the blasting vibrometer body 5 is arranged on the sponge pad 9, which further ensures the stability of the blasting vibrometer body 5 and ensures the stable monitoring work. The three-way vector sensor 8 is arranged on the soil on the top of the dam with a large slope outside the protection chamber 10 to collect the blasting vibration shock wave generated during the blasting construction. During the work, the sensor is tightly bonded to the ground with gypsum to form an overall vibration to ensure the accuracy of the collected data.

[0024] The three-dimensional vector sensor 8 is connected to the blasting vibration meter body 5 through the transmission wire 7. The blasting vibration meter body 5 transmits the data collected by the three-dimensional vector sensor 8 to the computer PC through wireless signals.

[0025] Embodiment 2:

[0026] The difference between this embodiment and the first embodiment is that a movable compartment cover 11 is provided on the top of the protection compartment 10, and a buckle 6 is provided on the compartment cover 11. The compartment cover 11 is made of tempered glass so as to observe the working state of the explosion vibration meter body 5 in the protection compartment 10.

[0027] It should be noted that the parts not described in detail in the above embodiments are all prior art.

[0028] The above is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration monitoring device for a dam adjacent to a tunnel blasting operation, characterized in that: The invention comprises a blasting vibrometer body (5), a protection chamber (10) and a three-dimensional vector sensor (8); a plurality of fixing seats are provided on the side wall of the protection chamber (10); fixing bolts are provided through the fixing seats, and the fixing bolts are used to penetrate into the soil on the top of a large slope dam; a sponge pad (9) is horizontally placed in the protection chamber (10); the blasting vibrometer body (5) is arranged on the sponge pad (9); the three-dimensional vector sensor (8) is arranged on the soil on the top of the large slope dam outside the protection chamber (10); and the three-dimensional vector sensor (8) is connected to the blasting vibrometer body (5) for signals via a transmission wire (7).

2. The device for monitoring vibration of a dam adjacent to a tunnel during blasting operation according to claim 1, characterized in that: A movable bin cover (11) is provided on the top of the protection bin (10), and a drawstring (6) is provided on the bin cover (11).

3. The vibration monitoring device for a dam adjacent to a tunnel blasting operation according to claim 2, characterized in that: The material of the bin cover (11) is tempered glass.

4. The device for monitoring vibration of a dam adjacent to a tunnel during blasting operation according to claim 1, characterized in that: The fixing bolt comprises a rotating rod (2) and a bolt (3), wherein the bolt (3) is arranged at the bottom of the rotating rod (2).

5. The device for monitoring vibration of a dam adjacent to a tunnel during blasting operation according to claim 4, characterized in that: A turning handle (1) is provided on the top of the turning rod (2).

6. The device for monitoring vibration of a dam adjacent to a tunnel during blasting operation according to claim 1, characterized in that: The bottom of the protection bin (10) is provided with four supporting feet (4) arranged in a rectangular shape.

7. The device for monitoring vibration of a dam adjacent to a tunnel during blasting operation according to claim 1, characterized in that: The fixing seats are arranged in a rectangular shape as a whole.

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