A rock sampling device for fault fracture area

Abstract

The present invention relates to the technical field of rock sampling, and specifically discloses a rock sampling device in a fault fracture area, comprising a base plate, the lower side of the base plate is fixedly connected to a base ring through a hanging plate, a group of drilling-type glue injection devices are installed on the base ring, the drilling-type glue injection device comprises a frame obliquely fixed on the upper side of the base ring, a sliding block is slidably connected in a slide groove on one side of the frame, a lifting device for controlling the sliding block to slide up and down is installed on the frame, a glue injection pipe is rotatably connected to the sliding block, a driving device is installed on the sliding block, and the driving device is used to drive the glue injection pipe to rotate. The advantages of the present invention are: the present invention allows the epoxy resin adhesive to slowly enter the cracks of the sample block by drilling holes and grouting around the sample block, and the crack structure of the sample block is completely preserved by the epoxy resin adhesive. At the same time, the air pressure in the crack area can be reduced while injecting the epoxy resin adhesive, so that the epoxy resin adhesive can enter the crack more easily under the action of the pressure difference.

Description

Technical Field

[0001] The invention relates to the technical field of rock sampling, and in particular to a rock sampling device in a fault fracture area. Background Art

[0002] The geological structural surfaces and fracture structures of various levels inside the rock mass control the mechanical and hydraulic properties of the regional rock mass to a large extent. Therefore, the depth of research on such geological structures directly determines the research progress of regional rock mass stability and permeability. However, due to the poor structural stability of rock masses with a high degree of fragmentation, the original structure of the geological body is easily destroyed under the violent vibration of conventional sampling equipment, which makes it difficult to obtain representative samples required for laboratory microscopic analysis. To this end, CN201310242429.7 discloses a method for sampling tectonic broken rock masses in their original state, which is to inject epoxy resin curing agent glue into the reserved gap section in the observation hole under pressure, so that the slurry is injected to the predetermined position along the dense cracks or broken gaps in the reserved section under the impact of high-pressure gas, and after the epoxy resin curing agent glue reaches the consolidation strength as a whole, a drilling rig is used and a drill bit of the same diameter is inserted into the observation hole to drill deeply to obtain samples required for indoor analysis containing complete key geological structures. However, this method has the following defects when used for sampling rock masses in fault-fragmented areas:

[0003] 1. The cracks in the rock mass in the fault fracture area are usually transverse cracks. In the prior art, glue is injected from the top. There are no cracks on the upper surface of the rock mass in the fault fracture area, so it is difficult to make the epoxy resin binder enter the transverse cracks in the lower layer.

[0004] 2. In the prior art, slurry is injected to a predetermined position along dense cracks or broken gaps in a reserved section under the impact of high-pressure gas. The high-pressure gas can easily cause a slight shift of the rock mass in the fault-broken area, resulting in deviations in the results of subsequent tests. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a rock sampling device for a fault fracture area, thereby solving the problems of the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A rock sampling device for a fault fractured area comprises a base plate, the lower side of the base plate is fixedly connected to a base ring via a hanging plate, a group of drilling-type glue injection devices are installed on the base ring, the drilling-type glue injection device comprises a frame obliquely fixed to the upper side of the base ring, a sliding block is slidably connected in a slide groove on one side of the frame, a lifting device for controlling the sliding block to slide up and down is installed on the frame, a glue injection tube is rotatably connected to the sliding block, a driving device is installed on the sliding block, and the driving device is used to drive the glue injection tube to rotate.

[0008] Preferably, a power box is provided above the base plate, the output shaft of the power box is fixed to the base plate, the top of the power box is fixedly connected to the glue box via a connecting column, and the glue box is connected to the glue injection pipe via a hose.

[0009] Preferably, the top of the glue box is fixedly connected to a suspension rod.

[0010] Preferably, the inner ring surface of the base ring is fixedly connected to the base tube through a fixing rod, the lower end of the base tube is coaxially fixed with an elastic bellows, the base tube is slidingly connected to a piston, the upper side of the piston is fixedly connected to a piston rod, the upper end of the base ring is fixedly connected to a cross beam, and a reset spring is fixedly connected between the cross beam and the piston.

[0011] Preferably, a ring is fixedly connected to the piston rod, a swing arm is hinged to the ring via a spring hinge, a limit block is fixedly connected to the upper side of the swing arm, and when the swing arm is in a horizontal state, the limit block contacts the ring, so that the swing arm cannot rotate upward, thereby limiting the swing arm.

[0012] Preferably, one side of the swing rod is fixedly connected to the touch rod, and one side of the slider is fixedly connected to the fixed beam. When the slider rises, the fixed beam contacts the touch rod, so that the swing rod, the collar and the piston rod move upward with the slider.

[0013] Preferably, a clearance groove is provided on one side of the fixed beam, and when the clearance groove overlaps with the touch rod, the touch rod passes through the clearance groove, so that the fixed beam passes over the touch rod.

[0014] The advantages of the present invention are as follows: the present invention allows the epoxy resin adhesive to slowly enter the cracks of the sample block by drilling holes and injecting grout around the sample block, and the crack structure of the sample block is completely preserved by the epoxy resin adhesive. At the same time, the air pressure in the crack area can be reduced while injecting the epoxy resin adhesive, and the epoxy resin adhesive can enter the cracks more easily under the action of the pressure difference. The present invention does not bring direct pressure to the sample block, and therefore will not cause deformation of the sample block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a basic structural schematic diagram of the present invention;

[0016] Figure 2 is a cross-sectional view of the interior of the base tube;

[0017] Figure 3 It is a basic structural diagram of the drilling type glue injection device;

[0018] Figure 4 It is a diagram of the use of the present invention;

[0019] Figure 5 It is a schematic diagram of the present invention during glue injection;

[0020] Figure 6It is a working state diagram of the fixed beam and the swing rod;

[0021] Figure 7 This is another working state diagram of the fixed beam and the swing rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0023] like Figure 1-3 As shown, this embodiment discloses a rock sampling device for a fault fracture area, including a base plate 2, a power box 1 is arranged above the base plate 2, the output shaft of the power box 1 is fixed to the base plate 2, a power device is installed in the power box 1, and the power device is used to drive the base plate 2 to rotate. The power device is a prior art, and how to install and arrange it is also a prior art, which will not be elaborated here.

[0024] The lower side of the base plate 2 is fixedly connected to the base ring 22 through a hanging plate 21, and a group of drilling-type glue injection devices 3 are installed on the base ring 22. In the present embodiment, there are two drilling-type glue injection devices 3, and the drilling-type glue injection devices 3 include a frame 31 obliquely fixed on the upper side of the base ring 22, and a slider 33 is slidably connected in a slide groove 32 on one side of the frame 31. A lifting device for controlling the slider 33 to slide up and down is installed on the frame 31. The lifting device also adopts the existing technology and can control the slider 33 to move back and forth in the slide groove 32, which will not be described separately here.

[0025] The slider 33 is provided with a rotation hole, and the rotation hole is connected to the injection tube 34. The slider 33 is provided with a driving device, and the driving device is used to drive the injection tube 34 to rotate. The driving device includes mutually meshing gears and gear rings, and the gear ring is sleeved on the outside of the injection tube 34. The gear is driven by a motor, so that the injection tube 34 can be rotated. A spiral drill sleeve is provided on the outside of the injection tube 34, so that it can be drilled downward through the injection tube 34. The bottom of the injection tube 34 is also provided with an outflow hole 37. The top of the power box 1 is fixedly connected to the glue box 4 through a connecting column 41, and the glue box 4 is connected to the injection tube 34 through a hose. The top of the glue box 4 is fixedly connected to the suspension rod 43.

[0026] The present embodiment discloses a rock sampling device for a fault fracture area. When in use, refer to Figure 4A base hole 200 is first drilled in the fault fracture zone 100 where sampling is required. The depth of the base hole 200 is determined according to the depth to be sampled. The sample block 300 to be sampled is formed at the bottom of the base hole 200. The sampling device is placed as a whole at the bottom of the base hole 200 through the suspension rod 43. Then, the injection tube 34 is inserted downwardly around the sample block 300 through the drilling-type injection device 3. Then, epoxy resin adhesive is injected into the injection tube 34. The epoxy resin adhesive will slowly enter the cracks of the sample block 300, and the crack structure of the sample block 300 is completely preserved by the epoxy resin adhesive. Example 2

[0027] On the basis of Example 1, in order to further improve the effect of injecting epoxy resin adhesive into the crack, after drilling the base hole 200, a central process hole is drilled on the upper side of the sample block 300. At the same time, the inner ring surface of the base ring 22 is fixedly connected to the base pipe 5 through a fixing rod 50, the lower end of the base pipe 5 is coaxially fixed with an elastic bellows 51, the base pipe 5 is slidably connected inside the base pipe 5, the piston 53 is provided with an air hole, and a one-way valve 57 is installed at the air hole. The direction of the one-way valve 57 is from bottom to top for ventilation, the upper end of the base ring 22 is fixedly connected to the crossbeam 55, and a reset spring 56 is fixedly connected between the crossbeam 55 and the piston 53.

[0028] The piston rod 54 is fixedly connected to the upper side of the piston 53, and the ring 6 is welded on the piston rod 54. The ring 6 is hinged to the swing rod 61 through a spring hinge. The spring hinge has resilience and is also a prior art, which is not described here. When the swing rod 61 is in a horizontal state, the spring hinge is in a free state. The upper side of the swing rod 61 is fixedly connected to the limit block 62. When the swing rod 61 is in a horizontal state, the limit block 62 contacts the ring 6, so that the swing rod 61 cannot rotate upward, thereby limiting the swing rod 61. One side of the swing rod 61 is fixedly connected to the touch rod 63, and one side of the slider 33 is fixedly connected to the fixed beam 35. When the slider 33 rises, the fixed beam 35 contacts the touch rod 63, so that the swing rod 61, the ring 6 and the piston rod 54 move upward with the slider 33. A clearance groove 36 is provided on one side of the fixed beam 35 . When the clearance groove 36 overlaps with the touch rod 63 , the touch rod 63 passes through the clearance groove 36 , so that the fixed beam 35 passes over the touch rod 63 .

[0029] When in use, the glue injection tube 34 slowly moves upward while injecting glue. Controlling the movement of the glue injection tube 34 requires controlling the movement of the slider. When the slider 33 moves upward, the fixed beam 35 also moves upward, which makes the reference Figure 5-Figure 7When the fixed beam 35 contacts the swing rod 61, it will move with the swing rod 61, the collar 6 and the piston rod 54, so that the piston will also move upward, thereby reducing the air pressure below the piston, and the air pressure at the crack of the sample block 300 will also be reduced, which is conducive to the epoxy resin adhesive entering the crack. After the glue injection is completed at this location, the power box 1 drives the substrate 2 to rotate, thereby changing the position of the drilling glue injection device 3, so that the epoxy resin adhesive can be injected into other locations, improving the injection effect of the epoxy resin adhesive in the crack and ensuring the integrity of the sample block 300.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock sampling device for a fault fracture area, characterized in that: The invention comprises a base plate (2), the lower side of the base plate (2) is fixedly connected to a base ring (22) via a hanging plate (21), a group of drilling-type glue injection devices (3) are installed on the base ring (22), the drilling-type glue injection device (3) comprises a frame (31) fixed obliquely to the upper side of the base ring (22), a sliding block (33) is slidably connected in a slide groove (32) on one side of the frame (31), a lifting device for controlling the sliding block (33) to slide up and down is installed on the frame (31), a glue injection pipe (34) is rotatably connected to the sliding block (33), and a driving device is installed on the sliding block (33), and the driving device is used to drive the glue injection pipe (34) to rotate; The inner ring surface of the base ring (22) is fixedly connected to the base tube (5) via a fixing rod (50); an elastic bellows (51) is coaxially fixed to the lower end of the base tube (5); a piston (53) is slidably connected inside the base tube (5); the upper side of the piston (53) is fixedly connected to a piston rod (54); the upper end of the base ring (22) is fixedly connected to a cross beam (55); and a return spring (56) is fixedly connected between the cross beam (55) and the piston (53); The piston rod (54) is fixedly connected to a collar (6), a swing rod (61) is hingedly connected to the collar (6) via a spring hinge, and a limit block (62) is fixedly connected to the upper side of the swing rod (61). When the swing rod (61) is in a horizontal state, the limit block (62) contacts the collar (6), so that the swing rod (61) cannot rotate upward, thereby limiting the position of the swing rod (61); One side of the swing rod (61) is fixedly connected to the contact rod (63), and one side of the slider (33) is fixedly connected to the fixed beam (35); when the slider (33) rises, the fixed beam (35) contacts the contact rod (63), thereby causing the swing rod (61), the collar (6) and the piston rod (54) to move upward along with the slider (33); A clearance groove (36) is provided on one side of the fixed beam (35); when the clearance groove (36) overlaps with the touch rod (63), the touch rod (63) passes through the clearance groove (36), thereby allowing the fixed beam (35) to pass over the touch rod (63).

2. A rock sampling device for a fault fracture area according to claim 1, characterized in that: A power box (1) is provided above the base plate (2); an output shaft of the power box (1) is fixed to the base plate (2); the top of the power box (1) is fixedly connected to a glue box (4) via a connecting column (41); and the glue box (4) is connected to a glue injection pipe (34) via a hose.

3. A rock sampling device for a fault fracture area according to claim 2, characterized in that: The top of the glue box (4) is fixedly connected to a suspension rod (43).

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