CN202584537U - Structural physical simulation experiment device of fault movement and associated fracture development of fault movement - Google Patents

Abstract

The utility model relates to a structural physical simulation experiment device of fault movement and associated fracture development of fault movement and mainly aims to solve problems that a device in the prior art has poor visibility and low operation precision, and can not meet requirements for simulation of normal and reverse faults and faults with different inclined angles. The structural physical simulation experiment device is characterized by comprising a simulation system which is formed by a hydraulic manual displacement adjusting device, a load-bearing frame, a crane, a load-bearing top beam and a top-face hydraulic driving device; the load-bearing frame, the load-bearing top beam and a foundation form a main body frame of the simulation system; the hydraulic manual displacement adjusting device is fixedly mounted at a lower portion of the whole frame; the crane is fixed on the load-bearing top beam through a pulley; a fault slide block is placed in a simulation box body; a rotary shaft is connected with the simulation box body; the rotary shaft, a rotary bearing and a manual visual angle adjusting device are coordinated; a displacement sensor in a terminal control system is mounted at an inner portion of the simulation box body. All of the visual angle and the displacement of the devices can be adjusted wilfully, and test application effects are good.

Description

Structural physical simulation experiment device for fault activity and associated fracture development

technical field

The utility model relates to a physical simulation experiment device for scientific research and teaching, in particular to a physical simulation experiment device for fault activity and the development and evolution of associated fractures.

Background technique

The structural physical simulation experimental device for fault activity and associated fracture development is a new type of fault formation simulation device, and its purpose is to use it in scientific research and teaching. At present, there are few structural physical simulations of fault activity and associated fracture development at home and abroad, and the devices generally have the following deficiencies: (1) The visibility of the fault formation process is poor, which cannot satisfy experimental researchers' understanding of fault activity and associated fractures. Monitoring of developmental evolution. (2) The control accuracy is low. (3) The simulation of normal and reverse faults and faults with different dip angles cannot be satisfied at the same time.

Contents of the invention

In order to solve the technical problems mentioned in the background technology, the utility model provides a structural physical simulation experiment device for fault activity and associated fracture development. The device can adjust the viewing angle of the simulation process arbitrarily, and has strong visibility. In addition, The device uses a manual hydraulic adjustment unit, which not only reduces the cost of the device, but also can adjust the displacement and effective stress at will according to the needs of experimental researchers.

The technical scheme of the utility model is: the structural physical simulation experiment device for fault activity and associated fracture development, including a manual pump control device, an advection pump control device, a displacement sensor, 4 sets of pressure cylinders, a pressure cylinder pressure instrument and a hydraulic The terminal control system composed of transmission pipelines is unique in that: the experimental device also includes a simulation system; the simulation system consists of a hydraulic manual displacement adjustment device, a load-bearing frame, a crane, a load-bearing top beam, and a hydraulic transmission on the top surface. The device, the fixed steel plate, the tomographic slider, the rotating shaft, the rotating bearing, the manual viewing angle adjustment device, the base, the bottom hydraulic transmission device and the side hydraulic pressure control device are connected to form. Wherein, the load-bearing frame, the load-bearing top beam and the base constitute the main frame of the simulation system; the hydraulic manual displacement adjustment device is fixedly installed on the lower left side of the overall frame, and the crane is fixed on the load-bearing top beam through pulleys, and the crane can be placed on the load-bearing top. The lower part of the beam can move freely in the horizontal direction;

A simulated box is composed of a number of fixed steel plates fixedly connected, the fault slide block is fixed on the cable connected to the crane to be placed in the simulated box, and the top hydraulic transmission device is installed in the simulated box. On the side of the upper surface of the box, the hydraulic pressure control device is installed on the lower left surface of the simulated box, while the bottom hydraulic transmission device is installed on the lower surface of the simulated box; the rotating shaft is connected with the simulated box, The rotating shaft, rotating bearing and manual viewing angle adjustment device are matched;

The displacement sensor in the terminal control system is installed inside the simulated box.

The utility model has the following beneficial effects: the experimental device has two major features: one is composed of multiple sets of replaceable frames, simulating faults with different dip angles; the other is visualization, which can directly photograph fault activities and the development and evolution process of associated fractures. In practice, this device can adjust the viewing angle of the simulation process arbitrarily, so it has strong visibility; in addition, this experimental device uses a manual hydraulic adjustment device, which not only reduces the cost of the device, but also can meet the needs of experimental researchers. Feel free to adjust the size of displacement and effective stress. In addition, this experimental device can simultaneously satisfy the simulation of normal and reverse faults and faults with different dip angles.

Description of drawings:

Fig. 1 is a schematic composition diagram of the utility model.

In the figure 1-hydraulic manual displacement adjustment device, 2-load-bearing frame, 3-crane, 4-load-bearing top beam, 5-top hydraulic transmission device, 6-fixed steel plate, 7-fault slider, 8-rotation shaft , 9-rotating bearing, 10-manual viewing angle adjustment device, 11-base, 12-bottom hydraulic transmission device, 13-side hydraulic pressure control device.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, the structural physical simulation experiment device for this kind of fault activity and associated fracture development includes a manual pump control device, an advection pump control device, displacement sensors, 4 sets of pressure cylinders, pressure cylinder pressure instruments, and hydraulic transmission pipelines The terminal control system constituted, in the above system, the manual pump control device is connected with No. 3 pressure cylinder and No. 4 pressure cylinder, which can control the pressure of the two, and the pressure can be displayed on the pressure gauge of No. 3 and No. 4 pressure cylinders; The advection pump control device is connected to No. 1 pressure cylinder and No. 2 pressure cylinder, and the pressure of the two pressure cylinders can be set. This process is mechanically controlled automatically, and the displacement during the experiment will be displayed in the displacement sensor. The hydraulic pressure transmission involved in the above two processes is completed by the hydraulic transmission pipeline. This device makes the following improvements on the basis of the prior art:

The experimental device also includes a simulation system; the simulation system consists of a hydraulic manual displacement adjustment device 1, a load-bearing frame 2, a crane 3, a load-bearing top beam 4, a top hydraulic transmission device 5, a fixed steel plate 6, and a fault slider 7. The rotating shaft 8, the rotating bearing 9, the manual viewing angle adjustment device 10, the base 11, the bottom hydraulic transmission device 12 and the side hydraulic pressure control device 13 are connected to form. Wherein, the load-bearing frame 2, the load-bearing top beam 4 and the base 11 constitute the main frame of the simulation system; the hydraulic manual displacement adjustment device 1 is fixedly installed on the lower left side of the overall frame, and the crane 3 is fixed on the load-bearing top beam through pulleys. 4, the crane 3 can move freely in the horizontal direction under the load-bearing top beam 4.

In addition, several pieces of fixed steel plates 6 are fixedly connected to form a simulated box, and the fault slider 7 is fixed on the cable connected to the crane 3 to be placed in the simulated box. The transmission device 5 is installed on the side of the upper surface of the simulated box body, the side hydraulic pressure control device 13 is installed on the surface of the lower left side of the simulated box body, and the bottom surface hydraulic transmission device 12 is installed on the lower surface of the simulated box body; The rotating shaft 8 is connected with the simulated box, and the rotating shaft 8, the rotating bearing 9 and the manual viewing angle adjustment device 10 cooperate; the displacement sensor in the terminal control system is installed inside the simulated box.

This kind of experimental device, because the whole of the simulation device is loaded in the skeleton with the load-bearing frame, the load-bearing top beam and the base as the main body; It is applied to the assembly and disassembly process of the main body of the sandbox; the fixed steel plate mainly plays a role in fixing the simulation device; the cooperation of the rotating shaft, the rotating bearing and the manual viewing angle adjustment device realizes the manual adjustment of the experimental viewing angle; the hydraulic manual displacement adjustment device Control the side hydraulic pressure control device by manually adjusting the amount of injected liquid to keep it at a constant pressure value. The hydraulic transmission device is adjusted through the terminal control system, the top hydraulic transmission device and the bottom hydraulic transmission device are used to adjust the displacement of the upper plate of the fault, and the side hydraulic pressure control device is used to realize the box simulation process Effective control of ambient pressure.

For the terminal control system, the pressure of the two pressure cylinders can be set. This process is mechanically controlled automatically. The displacement during the experiment will be displayed in the displacement sensor. The hydraulic pressure transmission involved in the above two processes is controlled by the hydraulic transmission pipeline. Finish.

The experimental device operates according to the following steps:

The first step is to load the required fault slider. Before the experimental simulation, according to the experimental requirements and the purpose of the experiment, the fault sliders that meet the requirements are selected. First remove the fixed steel plate, and then fix the selected fault slider on the cable connected to the crane, and load the fault slider in the simulation device by controlling the displacement of the crane in the horizontal direction and the displacement of the vertical lifting slider , and finally fix the fixed steel plate on the simulated box.

The second step is rock sample loading. First, use the manual displacement adjustment device 1 to adjust the relative displacement of the two fault sliders to zero, and adjust the box to be horizontal, and then place the prepared rock samples in the upper and lower fault sliders.

The third step, displacement and viewing angle adjustment. According to the nature of the simulated fault according to the experimental requirements, the displacement of the fault and the angle between the simulated box and the horizontal plane are adjusted through the manual viewing angle adjustment device 1 and the manual viewing angle adjustment device 10 . The manual angle of view adjustment device 1 introduces the liquid to the top and bottom hydraulic transmission devices through the hydraulic transmission pipeline, thereby converting it into displacement and controlling the displacement of the fault. The displacement and liquid pressure during the adjustment process pass through the displacement sensor inside the box. Finally displayed on the terminal display panel of the simulation device.

The fourth step, experimental phenomena and data collection and analysis. The real-time data and experimental phenomena during the experiment must be recorded by the experimenters in strict accordance with the relevant procedures, including the time corresponding to each experimental phenomenon and the collection of various data.

In specific experiments, the simulation slider can simulate normal faults and reverse faults with four dip angles of 30°, 45°, 60° and 75°, and can also simulate strike-slip faults in four directions by rotating the main box.

In addition, it is necessary to place a prefabricated layered stratum model in the main experiment chamber, which can generate faults and associated fractures under the action of the hydraulic system. As the fault distance increases, the degree of fracture development will inevitably change. Detailed records these changes. Change the boundary conditions such as stratum thickness, lithology, diagenetic degree, fault dip angle, fault distance, fault displacement rate, etc., repeat the above experiment, and count fracture occurrence parameters, such as inclination, inclination, density, width and extension length, etc. Based on a large number of experimental results, the quantitative relationship between the degree of fracture development and faults and lithology under experimental conditions is established. Using the results of structural simulation experiments, boundary conditions are set, numerical simulations are carried out, and stress fields of faults and fractures and their change mechanisms are analyzed.

Claims (1)

1. faulting and associated fracture thereof the simulation experiment of tectonics physics device of growing; Comprise by manual pump control device, constant-flux pump control device, displacement transducer, 4 groups of terminal control systems that pressure cylinder, pressure cylinder manometer and hydraulic pressure transfer line constitute, it is characterized in that:

Said experimental provision also comprises a simulation system; Said simulation system connects the back by fluid pressure type manual displacement regulating device (1), load-bearing frame (2), crane (3), load-bearing back timber (4), end face hydraulic transmission device (5), fixation steel plate (6), tomography slide block (7), rotation axis (8), rolling bearing (9), manual view angle adjusting device (10), pedestal (11), bottom surface hydraulic transmission device (12) and side fluid pressure type pressure control device (13) and constitutes; Wherein, said load-bearing frame (2), load-bearing back timber (4) and pedestal (11) constitute the main body frame of simulation system; Said fluid pressure type manual displacement regulating device (1) is fixedly mounted on the lower left of general frame, and crane (3) is fixed on the load-bearing back timber (4) through pulley, and crane (3) can move freely in the below horizontal direction of load-bearing back timber (4);

Be fixedly connected the back by some fixation steel plates (6) and constitute an analog unit; After being fixed on the hawser that is connected on the crane (3), said tomography slide block (7) inserts in the said analog unit with realization; Said end face hydraulic transmission device (5) is installed in the upper surface side of analog unit; Side fluid pressure type pressure control device (13) is installed on the surface of analog unit lower left, and bottom surface hydraulic transmission device (12) then is installed in the lower surface of analog unit; Said rotation axis (8) is connected with analog unit, and rotation axis (8), rolling bearing (9) and manual view angle adjusting device (10) match;

Displacement transducer in the said terminal control system is installed in the inside of the said plan casing of mould.

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