CN102663952A - Simulation demonstrator of collapse earthquake - Google Patents

Abstract

The invention discloses a subsidence earthquake simulation demonstrator, aiming at providing a subsidence earthquake model with simple structure, automatic reset and repeated demonstration. The technical gist is that the present invention includes a demonstration device and a driving device. The demonstration device is composed of an operation console (16) and a ground sand table model (17) with a sunken ground (18); the driving device is located under the sunken ground (18), The driving device includes: frame (12), motor (1), synchronous wheel (2), synchronous belt (14), ball screw (4), connecting plate (9), slider connecting block (10), stainless steel Shaft (11).

Description

Subsidence earthquake simulation demonstrator

technical field

The present invention relates to a subsidence earthquake simulation demonstrator.

Background technique

Earthquakes are one of the sudden natural phenomena that human beings cannot resist. Earthquakes can be divided into man-made earthquakes and natural earthquakes. Man-made earthquakes caused by human activities (such as mountain opening, mining, blasting, etc.) are called natural earthquakes. Natural earthquakes can be divided into four categories according to their causes: tectonic earthquakes, volcanic earthquakes, subsidence earthquakes, and induced earthquakes. The most frequent and destructive earthquakes on Earth are tectonic earthquakes.

Subsidence earthquakes are caused by the dissolution of soluble rocks by groundwater, causing cavities in the rocks to gradually expand, or the formation of huge cavities due to underground mining, resulting in the collapse of the top of the rock and the collapse of the soil layer. Subsidence earthquakes mainly occur in limestone or other karst rock areas. Due to the continuous expansion of underground caves, the roof of the cave collapses, causing vibrations. Mine collapse or large-scale landslides and landslides can also cause such earthquakes. This type of earthquake accounts for about 3% of the total number of earthquakes, and their magnitudes are very small. The maximum subsidence earthquake in the mining area can reach about magnitude 5, and a subsidence earthquake of magnitude 4 has occurred in my country. Although the focal point of the subsidence earthquake is shallow, it will still cause serious damage to the upper and lower parts of the mine, and threaten the life safety of miners, so people should pay attention to it.

Contents of the invention

The object of the present invention is to provide a sink earthquake simulation demonstrator aiming at the causes of sink earthquakes. By reproducing the damage when a sink earthquake occurs, the audience can better understand the earthquake and enhance people's awareness of disaster prevention and mitigation.

In order to achieve the above object, the present invention is achieved through the following technical solutions: the subsidence earthquake simulator includes a demonstration device and a driving device, and the demonstration device is composed of an operation console and a ground sand table model with a subsidence ground; the driving device is located under the subsidence ground , characterized in that: the drive device includes: a frame, a motor, a synchronous wheel, a synchronous belt, a ball screw, a connecting plate, a slider connecting block, and a stainless steel shaft, wherein:

The motor is installed on the support frame of the frame, and the output shaft end of the motor is installed with a synchronous wheel and connected with the tensioner wheel through a synchronous belt; one end of the ball screw is connected with the synchronous wheel, and the other end is connected with the connecting plate; the connecting plate Slider connecting blocks are respectively installed at both ends of the slider, and stainless steel shafts are installed on both sides of the frame corresponding to the slider connecting block.

With the above technical solution, the ball screw is fixed by a fixing frame composed of a connecting rod, a linear bearing and a fixing plate, and the fixing frame is fixed and installed on the frame via a ball screw nut.

By adopting the above technical scheme, the upper part of the ground sand table model is equipped with a projector.

In summary, because the present invention is equipped with a projector on the upper part of the ground sand table model, the corresponding simulated scene can be played according to the content that the audience wants to understand, and the simulated sand table can simultaneously demonstrate the earthquake precursor phenomenon, the up and down of the fault when the earthquake occurs, and The left and right movement and the subsidence caused by the earthquake also demonstrate the relationship between the source, magnitude and intensity of the earthquake.

Description of drawings

Figure 1 is the front view of the subsidence earthquake simulator;

Figure 2 is a structural diagram of the driving device of the subsidence earthquake simulator;

In the figure, 1 motor, 2 synchronous wheel, 3 tensioner wheel, 4 ball screw, 5 ball screw nut, 6 connecting rod, 7 linear bearing, 8 fixing plate, 9 connecting plate, 10 slider connecting block, 11 stainless steel Shaft, 12 frame, 13 fixed frame, 14 synchronous belt, 15 support frame, 16 operation console, 17 ground sand table model, 18 sinking ground.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the present invention is further elaborated:

Press the ground subsidence button on the operation console 16 to start the drive motor 1, which drives the synchronous wheel 2 to rotate, and the synchronous wheel 2 drives the ball screw 4 through the tensioner 3 and the synchronous belt 14; the ball screw 4 drives the connecting plate 9 up and down in turn Movement, and then promote the lifting movement of the frame 12, to achieve the collapse of the ground sand table model with the subsidence of the ground surface, and at the same time, the subsidence of the ground surface will automatically reset after the system is reset, and the demonstration will be repeated. At the same time, by adjusting the frequency modulation of the motor 1, ground subsidence with different focal depths and magnitudes can be simulated.

Claims (3)

1. the depression earthquake simulator comprises apparatus for demonstrating and drive unit, and apparatus for demonstrating is by operating console (16) and have the ground sand table model (17) of subsideing ground (18) and form; Drive unit is positioned at subsides below the ground (18); It is characterized in that: said drive unit comprises: framework (12), motor (1), synchronizing wheel (2), synchronous band (14), ball-screw (4), web joint (9), slide block contiguous block (10), stainless steel shaft (11), wherein:

Motor (1) is installed on the bracing frame (15) of framework (12), and the output axle head of said motor (1) is installed synchronizing wheel (2) and is connected with expansion tightening wheel (3) through synchronous band (14); One end of ball-screw (4) is connected with synchronizing wheel (2), and the other end is connected with web joint (9); Slide block contiguous block (10) is installed at the two ends of said web joint (9) respectively, with framework (12) both sides of said slide block contiguous block (10) correspondence position stainless steel shaft (11) is being installed.

2. depression earthquake simulator according to claim 1; It is characterized in that the fixed mount (13) that ball-screw (4) is made up of connecting link (6), linear bearing (7) and fixed head (8) is fixing, said fixed mount (13) is fixedly mounted on the framework (12) through ball-screw nut (5).

3. depression earthquake simulator according to claim 1 is characterized in that ground sand table model (17) top is furnished with projector.

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