Variable-pressure adjustable water supply structure for rock mass fracture permeability test

Abstract

The utility model relates to the technical field of water pressure adjustment, in particular to a variable-pressure adjustable rock mass fracture permeability test water supply structure which comprises a pressure supply structure, a lifting structure and a mounting base, the pressure supply structure comprises a force exerting piece, and a sliding type water conveying pipe is fixedly mounted on the bottom side of the force exerting piece; the lifting structure comprises a base pipe, the upper end of the base pipe is slidably sleeved with the sliding water conveying pipe, auxiliary supporting frames are fixedly installed on the two sides of the base pipe and rotationally sleeved with inner threaded sleeves, the upper ends of the inner threaded sleeves are rotationally sleeved with lead screws, and the upper ends of the two lead screws are fixedly connected with the two ends of a force exerting piece. The mounting base is fixedly mounted at the lower end of the base tube. When water pressure needs to be adjusted, the two screw rods are twisted to slide up and down through synchronous rotation of the two inner threaded sleeves, force is applied to the two ends of the bottom side of the force exerting piece through the screw rods, the base pipe and the sliding type water conveying pipe are driven to stretch out and draw back up and down, then the overall pressure supply structure is lifted, and different water pressure requirements are adjusted by utilizing the hydrostatic pressure principle and changing the water level.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pressure adjustment technical field, concretely is a kind of variable pressure adjustable rock mass fissure permeability test water supply structure. BACKGROUND

[0002] Rock mass fissure permeability coefficient is the important parameter reflecting the permeability of fissured rock mass, and it has a huge impact on the stability of dam, slope and underground chamber. Due to geological reasons, and the groundwater with certain pressure continuously erodes the rock mass, some rock mass has been penetrated and cracked, and water penetrates into the cracks and generates certain pressure, which is the penetration water pressure. In order to avoid the influence of rock mass cracks during underground engineering excavation, it is necessary to test the rock mass.

[0003] And the current measurement method is mostly continuous water supply, and the water pressure feedback is measured, so the water pressure stability of the water supply structure is an important condition, and the current water pressure adjustment method is mostly adjusted by using water pressure regulating valve, installing pressure tank and other methods. The water pressure regulating valve adjusts the water pressure by adjusting the opening and closing size of the valve, and the adjustment range of the water pressure is limited. The pressure tank is mainly used to stabilize the water pressure. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a variable pressure adjustable rock mass fissure permeability test water supply structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A variable pressure adjustable rock mass fissure permeability test water supply structure comprises:

[0007] The pressure supply structure comprises a force piece, and the bottom side of the force piece is fixedly installed with a sliding water supply pipe;

[0008] The lifting structure comprises a base pipe, the upper end of the base pipe is slidingly connected with the sliding water supply pipe, the base pipe is fixedly installed with auxiliary support frames on both sides, the auxiliary support frames are rotatably connected with internal thread sleeves, the internal thread sleeves are rotatably connected with lead screws on the upper end, and the upper ends of the two lead screws are fixedly connected with the force piece on both ends;

[0009] The installation base is fixedly installed at the lower end of the base pipe.

[0010] Further, the pressure supply structure further comprises:

[0011] The water outlet is fixedly installed on the upper side of the force piece;

[0012] The high-level water tank is in intercommunication with the water outlet on the bottom side;

[0013] A flowmeter is embedded in the front surface of the water outlet.

[0014] A signal transmission line is fixedly connected to one end of the flowmeter.

[0015] Further, the pressure supply structure further comprises:

[0016] A sliding block is fixedly sleeved on the lower end of the sliding water delivery pipe.

[0017] A sealing rubber sleeve is fixedly sleeved on the outer surface of the sliding block.

[0018] Further, the lifting structure further comprises:

[0019] A base block is fixedly installed on the lower end of the internal thread sleeve.

[0020] A bearing is fixedly sleeved on the lower end of the base block.

[0021] A chain is sleeved on one end of the two side surfaces of the base block.

[0022] A gear set is sleeved on one end of the two chains.

[0023] Further, the mounting base further comprises:

[0024] A base plate is fixedly sleeved on the lower end of the base pipe, and the outer ring of the bearing is fixedly connected to the two sides of the upper surface of the base plate.

[0025] A mounting flange is fixedly sleeved on the bottom opening of the base plate.

[0026] Further, the mounting base further comprises:

[0027] A first motor is fixedly installed on the bottom rear end of the base plate, and the output end of the first motor is fixedly connected to the bottom side of the gear set.

[0028] Further, the mounting base further comprises:

[0029] A second motor is fixedly installed on the bottom front end of the base plate, and the power supply wiring of the second motor is fixedly connected to the other end of the signal transmission line.

[0030] A pump head is fixedly installed on the upper front end of the base plate, and the inner paddle of the pump head is fixedly connected to the output end of the second motor.

[0031] An external water pipe is fixedly installed on one side of the pump head.

[0032] A water supply pipe is fixedly installed on the upper side of the pump head.

[0033] Compared with the prior art, the utility model has the advantages that:

[0034] When the water pressure needs to be adjusted, the two internal thread sleeves are synchronously rotated, the two lead screws are rubbed up and down, the force pieces are synchronously applied with the force of the same size at the two ends of the bottom side through the lead screws, the base pipe and the sliding water delivery pipe are driven to stretch and shrink up and down, the whole pressure supply structure is lifted, the hydrostatic pressure principle is used, the water level line is changed to adjust the different water pressure requirements.

[0035] The flow rate of the water discharged from the high-position water tank is measured by the flowmeter, the flow rate information is transmitted to the second motor through the electric signal transmission line, the second motor is controlled to rotate, the pump head is driven, the external water pipe extracts the water in the water source, and the water is injected into the high-position water tank through the water supply pipe, so that the drainage and the water injection are relatively balanced, the water level line in the high-position water tank is kept in a relatively static state, and the effect of maintaining the adjusted water pressure is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall structure schematic view of the utility model;

[0037] Figure 2 It is the pressure supply structure schematic view in the utility model;

[0038] Figure 3 It is the lifting structure schematic view in the utility model;

[0039] Figure 4 It is the mounting base schematic view in the utility model.

[0040] In the drawing: 1, pressure supply structure; 101, high-position water tank; 102, water outlet; 103, flowmeter; 104, electric signal transmission line; 105, force piece; 106, sliding water delivery pipe; 107, sliding block; 108, sealing rubber sleeve; 2, lifting structure; 201, base pipe; 202, auxiliary support frame; 203, internal thread sleeve; 204, lead screw; 205, base block; 206, bearing; 207, chain; 208, gear set; 3, mounting base; 301, base plate; 302, first motor; 303, second motor; 304, pump head; 305, external water pipe; 306, water supply pipe; 307, mounting flange. DETAILED DESCRIPTION

[0041] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] Referring to Figures 1-4 The utility model discloses a variable pressure adjustable rock mass fissure permeability test water supply structure, including pressure supply structure 1, lifting structure 2 and installation base 3, pressure supply structure 1 includes force piece 105, and force piece 105 bottom side fixed mounting has sliding type water delivery pipe 106, lifting structure 2 includes base pipe 201, and base pipe 201 upper end and sliding type water delivery pipe 106 sliding sleeve joint, and base pipe 201 both sides fixed mounting have auxiliary support frame 202, and auxiliary support frame 202 rotation sleeve joint has internal thread sleeve 203, and internal thread sleeve 203 upper end screw joint has lead screw 204, and two lead screw 204 upper end and force piece 105 both ends fixed connection, and installation base 3 fixed mounting in base pipe 201 lower end.

[0043] Specifically, when the water pressure needs to be adjusted, the two internal thread sleeves 203 are synchronously rotated, the two lead screws 204 are rubbed and slide up and down, and the force piece 105 is synchronously applied with relatively consistent force on the two ends of the bottom side of the force piece 105 through the lead screw 204, so that the base pipe 201 and the sliding type water delivery pipe 106 are stretched and contracted up and down, the overall pressure supply structure 1 is lifted, the hydrostatic pressure principle is utilized, the water level line is changed, and the effect of adjusting different water pressure requirements is achieved. Embodiment one

[0044] As Figure 2 shown, in the embodiment, the pressure supply structure 1 further includes a sliding block 107 and a sealing rubber sleeve 108, the sliding block 107 is fixedly sleeved on the lower end of the sliding type water delivery pipe 106, and the sealing rubber sleeve 108 is fixedly sleeved on the outer side surface of the sliding block 107.

[0045] In the embodiment, when the lower end of the sliding type water delivery pipe 106 slides in the base pipe 201, the sealing rubber sleeve 108 covering the sliding block 107 directly contacts the inner wall of the base pipe 201, so that the sealing effect is maintained, and the water pressure is not unstable and inaccurate due to leakage of the sliding gap.

[0046] As Figure 1 , 3As shown in Figure 4, in this embodiment, the lifting structure 2 further includes a base block 205, a bearing 206, a chain 207, and a gear set 208. The base block 205 is fixedly installed on the lower end of the internal threaded sleeve 203; the inner ring of the bearing 206 is fixedly sleeved with the lower end of the base block 205; the side surfaces of the two base blocks 205 are meshed with one end of the chain 207; the gears at the upper and lower ends of the gear set 208 are respectively meshed with one end of the two chains 207; the mounting base 3 further includes a base plate 301, a mounting flange 307, and a first motor 302. The middle part of the upper surface of the base plate 301 is fixedly sleeved with the lower opening of the base tube 201, and the two sides of the upper surface of the base plate 301 are fixedly connected to the outer ring of the bearing 206; the mounting flange 307 is fixedly sleeved at the bottom opening of the base plate 301; the first motor 302 is fixedly installed at the rear end of the bottom side of the base plate 301, and the output end of the first motor 302 is fixedly connected to the bottom side of the gear set 208.

[0047] In practice, the No. 1 motor 302 drives the gear set 208 to rotate, which in turn drives the two chains 207 to simultaneously rub the two base blocks 205, causing the two internal threaded sleeves 203 to rotate synchronously relative to each other, forcing the two lead screws 204 to move in the vertical direction and apply force to the force plate 105 to adjust the height of the pressure supply structure 1. Example 2

[0048] Based on Embodiment 1, in order to compensate for the fact that when the high-level water tank 101 supplies water to the permeability testing device, the water inside continuously flows out, and the water level itself changes, which in turn causes water pressure to change, making it impossible for the water pressure to be continuously and stably maintained at a certain value, thus affecting the measurement effect.

[0049] like Figures 1-4 As shown, in this embodiment, the pressure supply structure 1 also includes a water outlet 102, an elevated water tank 101, a flow meter 103, and an electrical signal transmission line 104. The water outlet 102 is fixedly installed on the upper side of the pressure plate 105; the bottom side of the elevated water tank 101 is connected to the water outlet 102; the flow meter 103 is embedded in the front surface of the water outlet 102; one end of the electrical signal transmission line 104 is fixedly connected to the flow meter 103; the mounting base 3 also includes a second motor 303 and a pump head 30. 4. External water pipe 305 and water supply pipe 306; No. 2 motor 303 is fixedly installed on the front end of the bottom side of the base plate 301, and the power connection of No. 2 motor 303 is fixedly connected to the other end of the electrical signal transmission line 104; pump head 304 is fixedly installed on the front end of the upper surface of the base plate 301, and the internal blades of pump head 304 are fixedly connected to the output end of No. 2 motor 303; external water pipe 305 is fixedly installed on one side of pump head 304; water supply pipe 306 is fixedly installed on the upper side of pump head 304.

[0050] In the embodiment, the whole structure is installed on the permeability testing device body in the vertical state through the installation flange 307, and is communicated with the water supply pipeline, water is temporarily stored in the high water tank 101 in use, the flow rate of water discharged from the high water tank 101 is measured through the flowmeter 103, and the flow rate information is transmitted to the second motor 303 through the electric signal transmission line 104, the second motor 303 is controlled to rotate, the pump head is driven, the external water pipe 305 extracts water in the water source, and the water is injected into the high water tank 101 through the water supply pipe 306, so that the water drainage and water injection are relatively balanced, the water level line in the high water tank 101 is kept in the relatively static state, and the effect of maintaining the adjusted water pressure is achieved.

[0051] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0052] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A variable pressure adjustable water supply structure for testing the permeability of rock fractures, characterized in that, include: The pressure supply structure (1) includes a force plate (105), and a sliding water pipe (106) is fixedly installed on the bottom side of the force plate (105). The lifting structure (2) includes a base pipe (201), the upper end of which is slidably connected to a sliding water pipe (106), and auxiliary support frames (202) are fixedly installed on both sides of the base pipe (201). The auxiliary support frame (202) is rotatably connected to an internal threaded sleeve (203), and a screw rod (204) is screwed onto the upper end of the internal threaded sleeve (203). The upper ends of the two screw rods (204) are fixedly connected to both ends of the force plate (105). Mounting base (3) is fixedly installed at the lower end of base tube (201).

2. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 1, characterized in that, The pressure supply structure (1) also includes: Water outlet (102), the water outlet (102) is fixedly installed on the upper side of the force plate (105); A high-level water tank (101) is connected to a water outlet (102) on its bottom side. A flow meter (103) is embedded in the front surface of the outlet (102); An electrical signal transmission line (104) is fixedly connected at one end to a flow meter (103).

3. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 2, characterized in that, The pressure supply structure (1) also includes: A slider (107) is fixedly sleeved on the lower end of a sliding water pipe (106); A sealing sleeve (108) is fixedly sleeved on the outer surface of the slider (107).

4. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 3, characterized in that, The lifting structure (2) also includes: Base block (205), which is fixedly installed at the lower end of the internal threaded sleeve (203); Bearing (206), wherein the inner ring of the bearing (206) is fixedly sleeved to the lower end of the base block (205); The chain (207) is connected to one end of the chain (207) by the side surfaces of the two base blocks (205); The gear set (208) has gears at both ends that mesh with one end of each of the two chains (207).

5. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 4, characterized in that, The mounting base (3) also includes: The substrate (301) is fixedly sleeved at the middle of the upper surface of the substrate (301) to the lower end opening of the base tube (201), and the two sides of the upper surface of the substrate (301) are fixedly connected to the outer ring of the bearing (206). Mounting flange (307) is fixedly sleeved at the bottom opening of the base plate (301).

6. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 5, characterized in that, The mounting base (3) also includes: The first motor (302) is fixedly installed on the bottom rear end of the base plate (301), and the output end of the first motor (302) is fixedly connected to the bottom side of the gear set (208).

7. The variable pressure adjustable rock mass fracture permeability testing water supply structure according to claim 6, characterized in that, The mounting base (3) also includes: The second motor (303) is fixedly installed on the front end of the bottom side of the base plate (301), and the power supply terminal of the second motor (303) is fixedly connected to the other end of the electrical signal transmission line (104); Pump head (304), the pump head (304) is fixedly installed on the front end of the upper surface of the base plate (301), and the internal blades of the pump head (304) are fixedly connected to the output end of the second motor (303); An external water pipe (305) is fixedly installed on one side of the pump head (304); Water supply pipe (306) is fixedly installed on the upper side of pump head (304).

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