CN116297109A - Water pressing device for measuring permeability coefficient of rock mass - Google Patents

Abstract

The invention discloses a water pressing device for measuring rock mass permeability in the technical field of rock mass permeability detection, which comprises an outer wall pipe, wherein a water inlet pipe is arranged in the outer wall pipe, the upper end of the water inlet pipe is connected with an external water pump, the lower end of the outer wall pipe is fixedly connected with a mounting seat, the circular arc surface of the mounting seat is provided with a rubber plug, the inside of the mounting seat is provided with a supporting structure, the supporting structure comprises a movable plug pipe, the upper end of the movable plug pipe is in sliding connection with the mounting seat, the inside of the mounting seat is provided with a cavity, the movable plug pipe is positioned in the cavity, the inside of the rubber plug is provided with an expansion cavity, a through hole for communicating the cavity and the expansion cavity is formed between the circular arc surface of the mounting seat, and the circular arc surface of the movable plug pipe is provided with two external water through holes. Solves the problems of the water-filled rubber plug that the hardness is large and the water pressure is unstable, resulting in poor blocking effect of the rubber plug.

Description

Water pressing device for measuring permeability coefficient of rock mass

Technical Field

The invention relates to the technical field of rock mass permeability detection, in particular to a water pressing device for measuring rock mass permeability coefficient.

Background

The permeability coefficient of the rock mass is an index capable of reflecting the permeability of cracks in the rock mass, and has important practical significance for geological detection and engineering construction and for the research of the permeability of the underground rock mass.

At present, the internal permeability of the rock mass is usually measured by adopting a water pumping or water pressing method, and a water pressing test is used as the most common test mode, so that the method has the characteristic of determining the permeability of the rock mass; the method can be used for testing and calculating the relative water permeability and crack development degree of the rock mass.

The Chinese patent with the issued publication number of CN209485935U discloses a multistage gradient pressure-stabilizing drilling pressurized water test device, which comprises a water supply system, a multistage pressure-stabilizing system, a data acquisition system and a drilling closed system. The problem that the existing pressurized water test device cannot accurately control the pressurized water pressure can be solved, and meanwhile, the flow and the osmotic pressure in the drilling pressurized water process can be collected in real time, so that the efficiency and the quality of the pressurized water test are effectively improved.

The applicant found that, for example, the above-mentioned technology and the prior art, the water plugging device in the existing water pressing system generally presses water into the rubber plug to expand the rubber plug so as to plug the rock drilling hole, but the density of the water is higher than that of the air, the hardness of the rubber plug filled with water is higher, the water is easily scratched by sharp rock at the bottom of the rock wall drilling hole, and the flow rate of the water pressed into the rubber plug is unstable, so that the pressure in the rubber plug is unstable, and the water plugging effect is further affected.

Disclosure of Invention

The invention aims to provide a water pressing device for measuring the permeability coefficient of a rock mass, which aims to solve the problems that the water filling rubber plug provided in the background art is high in hardness and easy to damage, and meanwhile, the water pressure is unstable, so that the blocking effect of the rubber plug is poor.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a survey rock mass osmotic coefficient's pressurized-water device, includes the outer wall pipe, the internally mounted of outer wall pipe has the inlet tube, the upper end and the outside water pump of inlet tube link to each other, outer wall pipe lower extreme fixedly connected with mount pad, the rubber buffer is installed to the circular arc face of mount pad, the inside of mount pad is equipped with the structure of propping up, the structure of propping up includes movable plug pipe, the upper end and the mount pad sliding connection of movable plug pipe, the cavity has been seted up to the inside of mount pad, movable plug pipe is located the cavity, the inflation chamber has been seted up to the inside of rubber buffer, the circular arc face of mount pad is close to and has seted up the through-hole that is used for intercommunication cavity and inflation chamber between cavity, two outer water through-hole is seted up to the circular arc face of movable plug pipe, the bottom of inlet tube is sealed, two interior water through-holes have been seted up to the circular arc face of inlet tube two outer water through-holes positions, the size of interior water-hole is equivalent with outer water through-hole size.

As a further scheme of the invention, a sealing component is arranged at the position, close to the outer water through hole, of the inner wall of the movable plug pipe, the sealing component comprises a lantern ring, the arc surface of the lantern ring is fixedly connected with the inner wall of the movable plug pipe, the inner diameter of the lantern ring is equal to the outer diameter of the water inlet pipe, a connecting hole is formed in the position, corresponding to the outer water through hole, of the arc surface of the lantern ring, a sealing gasket is fixedly connected with the position, surrounding the connecting hole, of the inner wall of the lantern ring, and the sealing gasket is a rubber gasket.

As a further scheme of the invention, a sponge cushion is fixedly connected to the inner wall of the movable plug pipe close to the bottom.

As a further scheme of the invention, the lower end of the movable plug pipe is fixedly connected with an arc-shaped bottom piece, the arc-shaped bottom piece is semicircular, and the arc-shaped bottom piece is made of alloy steel.

As a further scheme of the invention, the upper surface of the movable plug pipe is fixedly connected with a rubber ring, and the rubber ring is tightly attached to the inner wall of the cavity.

As a further scheme of the invention, an adjusting structure is arranged at the position, close to the upper end, of the arc surface of the outer wall pipe, the adjusting structure comprises an adjusting disc, the inner wall of the adjusting disc is in threaded connection with the outer wall pipe, threads are arranged at the position, close to the upper end, of the arc surface of the outer wall pipe, a clamping block is fixedly connected to the arc surface of the adjusting disc, a fixing ring is slidingly connected to the surface of the clamping block, the adjusting disc is positioned on the inner wall of the fixing ring, the adjusting disc is in rotary connection with the fixing ring, a long plate is fixedly connected to the arc surface of the fixing ring, fixed shafts are fixedly connected to the positions, close to the front end and the rear end, of the upper surface of the long plate, a counterweight plate is fixedly connected to the upper end of the fixed shaft, and a handle is rotatably connected to the upper surface of the adjusting disc.

As a further scheme of the invention, the surface of the weight plate is in a shape of a downward concave arc, and the weight plate is a steel plate.

As a further scheme of the invention, two sides of the long plate are provided with fixing structures, each fixing structure comprises two limiting blocks, one side of each limiting block is fixedly connected with the long plate, a screw rod is rotatably connected between the two limiting blocks, each screw rod is a bidirectional threaded screw rod, one end of each screw rod is fixedly connected with an adjusting cap, the arc surface of each screw rod is in threaded connection with two movable plates, one side of each movable plate is U-shaped and is in sliding connection with the long plate, two steel nails are in sliding connection with the inside of each movable plate, and the upper ends of the steel nails are fixedly connected with fixing sheets.

As a further scheme of the invention, the circular arc surface of the steel nail is provided with spiral lines.

Compared with the prior art, the invention has the beneficial effects that:

1. through the setting of activity stopper pipe, only need inwards insert the rock drilling that needs to detect with whole outer wall pipe, until the activity stopper pipe of bottom touches the end, and continue to push down outer wall pipe, this moment because the pressure effect, activity stopper pipe can upwards move in the inside cavity of mount pad, and extrude inside air simultaneously, with the cavity in the air squeeze into the rubber stopper through the through-hole, make the rubber stopper inflation, until the rubber stopper inflation reaches the complete separation drilling inner wall, in addition because the rubber stopper is propped up by the air and is inflated greatly, it also has certain cushioning ability, thereby avoid the rubber stopper to be too hard, lead to being damaged by sharp rock mass.

2. Through seal assembly's setting, when activity stopper pipe rises to outer limbers and interior limbers level, set up in the lantern ring of activity stopper pipe inner wall and the inseparable laminating of inlet tube inner wall, the sealed pad seals interior limbers outer wall simultaneously to effectively avoid the inlet tube when pressing water, lead to water to leak into in the activity stopper pipe, and continue upwards to appear the problem of influence to the mount pad.

3. Through the counter weight of two counter weight board surfaces increase on the longeron, rotate the whole regulating plate of handle adjustment, make the regulating plate rotate in the fixed ring, make its cooperation threaded connection's outer wall pipe downwardly moving simultaneously, make the process of pushing down more stable.

4. Through rotating the adjusting cap, the screw rod is enabled to rotate, the relative positions of the two movable plates are adjusted, and then steel nails on the surfaces of the movable plates are nailed into the ground surface, so that the whole device is firmly fixed, and the measuring process is more stable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram showing the connection relationship between a mounting base and a bottom movable plug pipe according to the present invention;

FIG. 3 is a cross-sectional view showing the internal structure of the bottom end of the outer wall tube according to the present invention;

FIG. 4 is an enlarged view of the invention at A in FIG. 3;

FIG. 5 is a schematic view showing the structure of the present invention in the vicinity of the upper end of the outer wall tube;

FIG. 6 is a cross-sectional view of an internal structure for showing an adjustment structure according to the present invention;

FIG. 7 is a schematic view showing the positional relationship of a weight plate and a long plate according to the present invention;

fig. 8 is a partial schematic view showing a fixing structure according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. an outer wall tube; 2. a water inlet pipe; 3. a mounting base; 4. a rubber stopper; 5. a propping structure; 51. a movable plug tube; 52. a cavity; 53. a through hole; 54. an expansion chamber; 55. an outer water through hole; 56. an inner water through hole; 57. a seal assembly; 571. a collar; 572. a connection hole; 573. a sealing gasket; 574. a sponge cushion; 58. an arc-shaped bottom piece; 59. a rubber ring; 6. an adjustment structure; 61. an adjusting plate; 62. a thread; 63. a clamping block; 64. a fixing ring; 65. a long plate; 66. a fixed shaft; 67. a weight plate; 68. a handle; 7. a fixed structure; 71. a movable plate; 72. steel nails; 73. a fixing piece; 74. a limiting block; 75. a screw; 76. and adjusting the cap.

Detailed Description

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a survey rock mass osmotic coefficient's pressurized-water device, includes outer wall pipe 1, and the internally mounted of outer wall pipe 1 has inlet tube 2, and inlet tube 2's upper end links to each other with outside water pump, and outer wall pipe 1 lower extreme fixedly connected with mount pad 3, rubber buffer 4 is installed to the arc surface of mount pad 3, and the inside of mount pad 3 is equipped with and props up structure 5, and outer wall pipe 1 arc surface is close to upper end position and is equipped with adjusting structure 6.

As shown in fig. 2, 3 and 4, the supporting structure 5 comprises a movable plug tube 51, the upper end of the movable plug tube 51 is slidably connected with the mounting seat 3, a cavity 52 is formed in the mounting seat 3, the movable plug tube 51 is located in the cavity 52, an expansion cavity 54 is formed in the rubber plug 4, a through hole 53 used for communicating the cavity 52 and the expansion cavity 54 is formed in the circular arc surface of the mounting seat 3, two outer water through holes 55 are formed in the circular arc surface of the movable plug tube 51, the two outer water through holes 55 are symmetrically distributed along the center of the circle of the movable plug tube 51, the bottom of the water inlet tube 2 is closed, two inner water through holes 56 are formed in the positions, corresponding to the two outer water through holes 55, of the circular arc surface of the water inlet tube 2, and the size of the inner water through holes 56 is equal to that of the outer water through holes 55.

Through setting up of activity stopper pipe 51, only need inwards insert whole outer wall pipe 1 in the rock drilling that needs to detect, until the activity stopper pipe 51 of bottom touches the bottom, and continue to push down outer wall pipe 1, this moment because the pressure effect, activity stopper pipe 51 can upwards move in the inside cavity 52 of mount pad 3, and extrude inside air simultaneously, extrude the inside air of cavity 52 into rubber buffer 4 through-hole 53, make rubber buffer 4 inflation, along with the increase of downforce, the distance that activity stopper pipe 51 can upwards move increases, make the pressure increase in cavity 52, and the air that gets into in rubber buffer 4 also constantly increases, until rubber buffer 4 expands to the complete separation drilling inner wall, in addition because rubber buffer 4 is expanded by the air strut, it also has certain cushioning ability, thereby avoid rubber buffer 4 to be too hard, lead to being damaged by sharp rock mass.

Wherein, the position that is close to outer water hole 55 of activity stopper pipe 51 inner wall is equipped with seal assembly 57, seal assembly 57 includes the lantern ring 571, the circular arc face of lantern ring 571 and activity stopper pipe 51 inner wall fixed connection, the internal diameter of lantern ring 571 is equivalent with inlet tube 2 external diameter, connecting hole 572 has been seted up to the position that the circular arc face of lantern ring 571 corresponds outer water hole 55, the lantern ring 571 inner wall encircles the position fixedly connected with sealing pad 573 of connecting hole 572 round, sealing pad 573 is the rubber pad.

Through seal assembly 57's setting, when activity stopper pipe 51 rises to outer water hole 55 and interior water hole 56 level, the lantern ring 571 that sets up in activity stopper pipe 51 inner wall closely laminates with inlet tube 2 inner wall, and sealed pad 573 seals interior water hole 56 outer wall simultaneously to effectively avoid inlet tube 2 when pressing water, lead to water to leak in activity stopper pipe 51, and continue upwards to appear influencing the problem to mount pad 3.

Wherein, the inner wall of the movable plug tube 51 is fixedly connected with a foam pad 574 near the bottom.

The foam pad 574 is used for buffering, and when the movable plug pipe 51 is lifted to the bottom of the water inlet pipe 2 to contact the bottom of the water inlet pipe 2, the bottom of the water inlet pipe 2 is buffered, so that damage to the water inlet pipe is avoided.

Wherein, the lower end of the movable plug tube 51 is fixedly connected with an arc-shaped bottom piece 58, the arc-shaped bottom piece 58 is semicircular, and the arc-shaped bottom piece 58 is made of alloy steel.

The arcuate base member 58 is arcuate in shape and has a relatively high degree of hardness upon contact with the rock drill substrate to accommodate the downward pressure.

Wherein, the upper surface of the movable plug tube 51 is fixedly connected with a rubber ring 59, and the rubber ring 59 is tightly attached to the inner wall of the cavity 52.

The rubber ring 59 is used to seal the contact point between the inside of the cavity 52 and the movable stopper tube 51, avoiding air leakage, resulting in a decrease in air pressure.

As shown in fig. 5, 6 and 7, the adjusting structure 6 comprises an adjusting disc 61, the inner wall of the adjusting disc 61 is connected with a thread 62 of the outer wall tube 1, the thread 62 is arranged at the position, close to the upper end, of the arc surface of the outer wall tube 1, a clamping block 63 is fixedly connected to the arc surface of the adjusting disc 61, a fixing ring 64 is slidably connected to the surface of the clamping block 63, the adjusting disc 61 is located on the inner wall of the fixing ring 64, the adjusting disc 61 is rotationally connected with the fixing ring 64, a long plate 65 is fixedly connected to the arc surface of the fixing ring 64, fixed shafts 66 are fixedly connected to the positions, close to the front end and the rear end, of the upper surface of the long plate 65, a counterweight 67 is fixedly connected to the upper end of the fixed shaft 66, and a handle 68 is rotationally connected to the upper surface of the adjusting disc 61.

Through the setting of adjusting structure 6, can increase the counter weight on two counter weight plates 67 on long board 65, can rotate whole adjustment disk 61 afterwards through handle 68, make adjustment disk 61 in solid fixed ring 64 internal rotation, make the outer wall pipe 1 that is connected rather than mating screw thread 62 simultaneously move down, convenient pushing down of outer wall pipe 1 makes activity stopper pipe 51 more convenient aerify rubber buffer 4.

The surface of the weight plate 67 is a downward concave arc, and the weight plate 67 is a steel plate.

The counter weight plate 67 is the circular arc of undercut, is convenient for place the counter weight sand bag, makes the counter weight sand bag be difficult to drop, reinforcing stability.

As shown in fig. 8, the two sides of the long plate 65 are provided with a fixing structure 7, the fixing structure 7 comprises two limiting blocks 74, one side of each limiting block 74 is fixedly connected with the long plate 65, a screw rod 75 is rotatably connected between the two limiting blocks 74, the screw rod 75 is a bidirectional threaded screw rod, one end of the screw rod 75 is fixedly connected with an adjusting cap 76, the arc surface thread 62 of the screw rod 75 is connected with two movable plates 71, one side of each movable plate 71 is in a U shape and is slidably connected with the long plate 65, two steel nails 72 are slidably connected inside the movable plates 71, the upper ends of the steel nails 72 are fixedly connected with fixing plates 73, spiral lines are formed in the arc surfaces of the steel nails 72, the steel nails are convenient to downwards screw into the ground, friction force is increased, and the risk of accidental pulling out is reduced

Through rotating the adjusting cap 76, the screw 75 is rotated, meanwhile, the screw 75 is a bidirectional threaded 62 rod, and the two movable plates 71 on the circular arc surface of the screw can move in opposite or opposite directions, so that adjustment is carried out according to the current earth surface environment, then the steel nails 72 are nailed into the earth surface, and the fixing pieces 73 are nailed downwards, so that the whole device is further fixed, and the measuring process is more stable.

Working principle: when the permeability coefficient of a rock mass needs to be measured, the outer wall pipe 1 of the whole device is driven to drive the lower end structure to be placed in a drill hole of the rock mass to be measured until the bottom arc-shaped bottom piece 58 is in contact with the bottom, then the outer wall pipe 1 is pressed down, the movable plug pipe 51 relatively moves upwards, the upper end of the movable plug pipe 51 moves upwards in the mounting seat 3, the cavity 52 is extruded, the pressure in the cavity 52 is increased, air flows inwards from the through hole 53 into the expansion cavity 54 in the rubber plug 4, the rubber plug 4 is expanded by the air, finally the outer water through hole 55 on the surface of the movable plug pipe 51 is in horizontal coincidence with the inner water through hole 56 due to upward movement, and meanwhile, the bottom of the water inlet pipe 2 is in contact with the bottom of the inner wall of the movable plug pipe 51, so that the water pressing test can be started.

Claims (9)

1. The utility model provides a survey rock mass permeability coefficient's pressurized-water device, includes outer wall pipe (1), its characterized in that: the inside of the outer wall pipe (1) is provided with a water inlet pipe (2), the upper end of the water inlet pipe (2) is connected with an external water pump, the lower end of the outer wall pipe (1) is fixedly connected with an installation seat (3), the circular arc surface of the installation seat (3) is provided with a rubber plug (4), the inside of the installation seat (3) is provided with a supporting structure (5), the supporting structure (5) comprises a movable plug pipe (51), the upper end of the movable plug pipe (51) is in sliding connection with the installation seat (3), a cavity (52) is formed in the installation seat (3), the movable plug pipe (51) is positioned in the cavity (52), an expansion cavity (54) is formed in the rubber plug (4), a through hole (53) used for communicating the cavity (52) and the expansion cavity (54) is formed between the circular arc surface of the mounting seat (3) close to the cavity (52) and the expansion cavity (54), two outer water through holes (55) are formed in the circular arc surface of the movable plug tube (51), the two outer water through holes (55) are symmetrically distributed along the center of the movable plug tube (51), the bottom of the water inlet tube (2) is closed, two inner water through holes (56) are formed in the position, corresponding to the two outer water through holes (55), of the circular arc surface of the water inlet tube (2), the size of the inner water through holes (56) is equal to that of the outer water through holes (55).

2. A water-pressurizing device for measuring permeability coefficient of rock mass according to claim 1, wherein: the position that is close to outer water hole (55) of activity stopper pipe (51) inner wall is equipped with seal assembly (57), seal assembly (57) are including lantern ring (571), the arc surface of lantern ring (571) is with activity stopper pipe (51) inner wall fixed connection, the internal diameter of lantern ring (571) is equivalent with inlet tube (2) external diameter, connecting hole (572) have been seted up to the position that lantern ring (571) arc surface corresponds outer water hole (55), the position fixedly connected with sealing gasket (573) of lantern ring (571) inner wall round connecting hole (572), sealing gasket (573) are the rubber pad.

3. A water-pressurizing device for measuring permeability coefficient of rock mass according to claim 1, wherein: the inner wall of the movable plug tube (51) is fixedly connected with a foam pad (574) near the bottom.

4. A water-pressurizing device for measuring permeability coefficient of rock mass according to claim 1, wherein: the lower end of the movable plug pipe (51) is fixedly connected with an arc-shaped bottom piece (58), and the arc-shaped bottom piece (58) is semicircular.

5. A water-pressurizing device for measuring permeability coefficient of rock mass according to claim 1, wherein: the upper surface of the movable plug tube (51) is fixedly connected with a rubber ring (59), and the rubber ring (59) is tightly attached to the inner wall of the cavity (52).

6. A water-pressurizing device for measuring permeability coefficient of rock mass according to claim 1, wherein: the utility model discloses a handle, including outer wall pipe (1), outer wall pipe (61) and outer wall pipe (1) are connected, outer wall pipe (1) are located the upper end position and are equipped with adjustment structure (6), inner wall and outer wall pipe (1) screw thread (62) are connected, outer wall pipe (1) are located the upper end position and are offered screw thread (62), the arc fixedly connected with fixture block (63) of adjusting plate (61), the surface sliding connection of fixture block (63) has solid fixed ring (64), adjusting plate (61) are located solid fixed ring (64) inner wall, adjusting plate (61) and solid fixed ring (64) rotate to be connected, gu arc fixedly connected with longplate (65) of solid fixed ring (64), equal fixedly connected with fixed axle (66) of longplate (65) upper surface is close to front and back end position, the upper end fixedly connected with counter weight plate (67) of fixed axle (66), the upper surface rotation of adjusting plate (61) is connected with handle (68).

7. The water pressing device for measuring permeability coefficient of rock mass according to claim 6, wherein: the surface of the weight plate (67) is in a downward concave arc shape, and the weight plate (67) is a steel plate.

8. The water pressing device for measuring permeability coefficient of rock mass according to claim 6, wherein: the utility model discloses a fixed knot who is used for the fixed knot of fly leaf (65) is constructed, fixed knot constructs (7) including two stopper (74), one side and fly leaf (65) fixed connection of stopper (74), two rotate between stopper (74) and be connected with screw rod (75), screw rod (75) are two-way screw thread screw rod, the one end fixedly connected with adjusting cap (76) of screw rod (75), arc surface screw thread (62) of screw rod (75) are connected with two fly leaf (71), one side of fly leaf (71) is "U" shape to with fly leaf (65) sliding connection, the inside sliding connection of fly leaf (71) has two steel nails (72), the upper end fixedly connected with stationary blade (73) of steel nail (72).

9. The water pressing device for measuring permeability coefficient of rock mass according to claim 6, wherein: spiral lines are formed on the arc surfaces of the steel nails (72).

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