Drilling device for micro-disturbance investigation of source area of ​​contaminated site

Abstract

The invention provides a punching device for micro-disturbance investigation of source areas of polluted sites. The punching device comprises a base plate, a vertical punching rod, an oblique punching rod, an angle adjustment component and a linkage limit component. The base plate is suitable for being fixed on the ground; the vertical punching rod is slidably matched with the base plate, has the freedom of vertical sliding, and is used for punching straight holes; the oblique punching rod is arranged at intervals on one side of the vertical punching rod, and is used for punching oblique holes, which are connected with the straight holes; the angle adjustment component is connected to the base plate, and is slidably matched with the oblique punching rod, and is used for adjusting the inclination angle of the oblique punching rod; the linkage limit component is connected to the base plate, and is connected to the vertical punching rod and the angle adjustment component, and is used for limiting the punching depth of the vertical punching rod according to the inclination angle of the oblique punching rod. The punching device for micro-disturbance investigation of the source area of ​​a polluted site provided by the present invention punches a straight hole by a vertical punching rod, and then punches an oblique hole by an oblique punching rod. At this time, the oblique hole is connected with the straight hole. During detection, the opening of the oblique hole is blocked, and the detection device is vertically inserted into the opening of the straight hole, without the need to insert an oblique line into the opening of the oblique hole.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a drilling device for micro-disturbance investigation of a source area of ​​a polluted site. Background Art

[0002] Non-aqueous phase liquids (NAPLs) generally refer to organic compounds that are insoluble in water. The pollution "tailing and rebound" caused by the residue of NAPLs in underground media is a difficult problem in pollution remediation. The pollution source area refers to the area where pollutants (NAPLs) are highly accumulated in the soil and groundwater. This area may become a potential long-term pollution source and have a secondary impact on the adjacent soil and groundwater. Therefore, the scope of the pollution source area is crucial for site investigation and remediation.

[0003] The micro-disturbance survey technology for pollution source areas is based on the fact that radon is easily soluble in organic solvents (NAPLs), which causes changes in the radon concentration in the soil pores to achieve NAPLs pollution source area investigation. When NAPLs are not present, the free radon produced by radium decay migrates to the soil surface through diffusion and migration and enters the atmosphere. When NAPLs are present, since radon preferentially dissolves in organic solvents, the radon concentration in the soil pores will drop significantly. When evaluating NAPLs pollution in soil and groundwater, the spatial distribution of pore radon concentration before and after soil pollution by NAPLs can be measured to quickly and accurately locate the NAPLs pollution source. Based on the above principles, according to the distribution characteristics of shallow surface radon gas, the NAPLs pollution source area of ​​the underlying soil and groundwater can be identified.

[0004] In order to obtain the distribution characteristics of shallow surface radon gas, it is necessary to reasonably distribute the survey points, drill holes at the survey points, and then insert the detection device into the hole to detect the shallow surface radon gas content here.

[0005] The detection device usually includes a ventilation pipe with a certain rigidity, a plug installed at the lower end of the ventilation pipe, and a radon detector installed on the ventilation pipe. During the detection, the orifice is sealed with a plug with a ventilation pipe, one end of the ventilation pipe is connected to the orifice, and the other end is connected to the air pipe of the drying column of the radon detector, and the air pipe at the other end of the drying column is connected to the radon detector.

[0006] For survey points without obstacles on the ground, a straight hole can be directly drilled at the survey point, and then the plug of the detection device can be inserted into the hole. At this time, the ventilation pipe is in a vertical state to ensure stability and is not easy to fall. However, for survey points with obstacles on the ground, it is necessary to avoid obstacles and drill oblique holes; and the existing devices for drilling oblique holes usually only drill an oblique hole. At this time, the detection device can only be inserted obliquely into the hole, and the ventilation pipe is in a tilted state, requiring manual support to continue detection. Summary of the invention

[0007] The invention provides a drilling device for micro-disturbance investigation of a source area of ​​a contaminated site, aiming to solve the technical problem that the existing device for drilling oblique holes usually only drills one oblique hole and the detection device can only be inserted into the hole opening obliquely.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a drilling device for micro-disturbance investigation of the source area of ​​a contaminated site, comprising:

[0009] a base plate adapted to be fixed to the ground;

[0010] A vertical punching rod, which is slidably matched with the bottom plate and has the freedom of vertical sliding, and is used for punching straight holes;

[0011] An oblique punching rod is arranged at intervals on one side of the vertical punching rod and is used to punch an oblique hole, wherein the oblique hole is connected to the straight hole;

[0012] An angle adjustment assembly connected to the bottom plate and slidably matched with the oblique punching rod to adjust the inclination angle of the oblique punching rod; and

[0013] A linkage limiting assembly is connected to the bottom plate and to the vertical punching rod and the angle adjustment assembly, and is used to limit the punching depth of the vertical punching rod according to the inclination angle of the oblique punching rod.

[0014] In a possible implementation of the perforating device for micro-disturbance investigation of a source area of ​​a contaminated site provided by the present invention, the angle adjustment component includes:

[0015] Two ear plates are spaced apart on both sides of the oblique punching rod; and

[0016] The guide sleeve is rotatably supported between the two ear plates, and the oblique punching rod is inserted into the guide and slidably matched with the guide sleeve.

[0017] In a possible implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention, a first rotating shaft is provided at the lower end of the guide sleeve, and a limit shaft is provided at intervals on the upper side of the first rotating shaft. The first rotating shaft is rotatably matched with the ear plate, and a limit groove is provided on the ear plate with the first rotating shaft as the center, and the limit shaft is slidably arranged in the limit groove.

[0018] In a possible implementation of the punching device for micro-disturbance investigation of a source area of ​​a contaminated site provided by the present invention, the axes of the first rotating shaft and the limiting shaft are perpendicular to the axis of the guide sleeve and are in the same plane.

[0019] In a possible implementation of the punching device for micro-disturbance investigation of a source area of ​​a contaminated site provided by the present invention, the linkage limit assembly includes:

[0020] A limit sleeve is sleeved on the vertical punching rod and notifies a locking mechanism to lock the relative position of the limit sleeve and the vertical punching rod to limit the punching depth of the vertical punching rod. A positioning plate is provided on the side of the limit sleeve;

[0021] A linkage sleeve, a sliding sleeve is arranged on the guide sleeve, linkage blocks are arranged on both sides of the linkage sleeve, and vertical holes and transverse holes are staggered on the connecting blocks;

[0022] A first guide rod is disposed on a side of the first rotating shaft facing away from the vertical punching rod, the distance between the axis of the first guide rod and the axis of the first rotating shaft is equal to the distance between the axis of the vertical punching rod and the axis of the first rotating shaft, and the first guide rod is inserted into the vertical hole; and

[0023] A positioning rod is arranged horizontally and penetrates the horizontal hole to locate the position of the limiting sleeve. When the positioning plate on the limiting sleeve abuts against the positioning rod, it means that the limiting sleeve reaches the desired position. After punching, the straight hole is connected with the oblique hole and will not penetrate the oblique hole.

[0024] A limit platform is provided on the outer periphery of the vertical punching rod on the base plate, and the upper end surface of the limit platform is flush with the axis of the first rotating shaft in height; when the positioning plate abuts against the positioning rod, the lower end surface of the limit sleeve is flush with the intersection of the axis of the first guide rod and the axis of the guide sleeve in height.

[0025] In a possible implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention, a vertically extending tooth row is provided on the side of the vertical punching rod, a receiving groove is provided on the inner side of the limiting sleeve, a card block is elastically provided in the receiving groove, the card block has the freedom to extend out and retract into the receiving groove, teeth are provided on the end face of the card block, and the upper and lower surfaces of the teeth are both inclined surfaces.

[0026] In a possible implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention, the locking mechanism is a locking rod, which is arranged on the side of the block facing away from the tooth row and slidingly cooperates with the limit sleeve, and the length of the locking rod is greater than the distance between the bottom of the accommodating groove and the bottom surface of the limit sleeve; after the limit sleeve abuts against the limit platform, the locking rod is lifted up and protrudes out of the bottom of the accommodating groove, preventing the block from retracting into the accommodating groove, thereby locking the position of the limit sleeve and the vertical punching rod.

[0027] In a possible implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention, a locking bolt is also provided on the linkage sleeve, and the locking bolt is threadedly matched with the linkage sleeve and is suitable for abutting against the guide sleeve to lock the relative positions of the linkage sleeve and the guide sleeve.

[0028] In a possible implementation of the punching device for micro-disturbance investigation of a source area of ​​a contaminated site provided by the present invention, the linkage limit assembly further includes:

[0029] a second guide rod, the second guide rod being disposed between the vertical punching rod and the first guide rod;

[0030] The sliding block is slidably matched with the second guide rod and the positioning rod, and is used to keep the positioning rod perpendicular to the first guide rod and the second guide rod.

[0031] In a possible implementation of the perforating device for micro-disturbance investigation of a source area of ​​a contaminated site provided by the present invention, the vertical perforating rod and the oblique perforating rod are solid structures or tubular structures.

[0032] The beneficial effect of the punching device for micro-disturbance investigation of source areas of contaminated sites provided by the present invention is as follows: compared with the prior art, the punching device for micro-disturbance investigation of source areas of contaminated sites provided by the present invention, when punching holes, first adjusts the inclination angle of the oblique punching rod through the angle adjustment component, and controls the punching depth of the vertical punching rod through the linkage limit component; then, punches straight holes through the vertical punching rod, and then punches oblique holes through the oblique punching rod, at this time, the oblique holes are connected with the straight holes; when detecting, blocks the opening of the oblique hole, and vertically inserts the detection device into the opening of the straight hole, without the need to insert an oblique line into the opening of the oblique hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a drilling device for micro-disturbance investigation of a source area of ​​a contaminated site provided by an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the main structure of a drilling device for micro-disturbance investigation of a source area of ​​a contaminated site provided by an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the geometric relationship of a drilling device for micro-disturbance investigation of a source area of ​​a contaminated site provided by an embodiment of the present invention;

[0036] Figure 4 For along Figure 2 The partial cross-sectional structure diagram along the AA line;

[0037] Description of reference numerals:

[0038] 10. Bottom plate; 11. Limiting platform; 20. Vertical punching rod; 21. Tooth row; 30. Oblique punching rod;

[0039] 41. ear plate; 411. limiting groove; 42. guide sleeve; 421. first rotating shaft; 422. limiting shaft;

[0040] 51, limit sleeve; 511, positioning plate; 512, clamping block; 513, locking rod; 52, linkage sleeve;

[0041] 521, linkage block; 53, first guide rod; 54, positioning rod; 55, locking bolt;

[0042] 56. Second guide rod; 57. Sliding block. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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 used to limit the present invention.

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0047] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0050] Please also read Figures 1 to 4 , the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention is now described. The punching device for micro-disturbance investigation of the source area of ​​a contaminated site comprises a base plate 10, a vertical punching rod 20, an oblique punching rod 30, an angle adjustment component and a linkage limiter component. The base plate 10 is suitable for being fixed on the ground; the vertical punching rod 20 is slidably matched with the base plate 10, has the freedom of vertical sliding, and is used to punch straight holes; the oblique punching rod 30 is arranged at intervals on one side of the vertical punching rod 20, and is used to punch oblique holes, which are connected to the straight holes; the angle adjustment component is connected to the base plate 10, and is slidably matched with the oblique punching rod 30, and is used to adjust the inclination angle of the oblique punching rod 30; the linkage limiter component is connected to the base plate 10, and is connected to the vertical punching rod 20 and the angle adjustment component, and is used to limit the punching depth of the vertical punching rod 20 according to the inclination angle of the oblique punching rod 30.

[0051] The beneficial effects of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention are as follows: compared with the prior art, the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by the present invention, when punching, first adjusts the inclination angle of the oblique punching rod 30 through the angle adjustment component, and controls the punching depth of the vertical punching rod 20 through the linkage limit component; then, a straight hole is punched through the vertical punching rod 20, and then an oblique hole is punched through the oblique punching rod 30. At this time, the oblique hole is connected with the straight hole, and the straight hole will not penetrate the oblique hole, thereby ensuring the detection accuracy; when detecting, the orifice of the oblique hole is blocked, and the detection device is vertically inserted into the orifice of the straight hole, without the need to insert the oblique line into the orifice of the oblique hole

[0052] like Figure 1 and Figure 2 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, the angle adjustment assembly includes a guide sleeve 42 and two ear plates 41, and the two ear plates 41 are spaced apart on both sides of the oblique punching rod 30; the guide sleeve 42 is rotatably supported between the two ear plates 41, and the oblique punching rod 30 is inserted into the guide and slidably cooperates with the guide sleeve 42.

[0053] Specifically, Figure 1 and Figure 2 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, a first rotating shaft 421 is provided at the lower end of the guide sleeve 42, and a limiting shaft 422 is provided at intervals on the upper side of the first rotating shaft 421. The first rotating shaft 421 is rotatably matched with the ear plate 41, and a limiting groove 411 is provided on the ear plate 41 with the first rotating shaft 421 as the center, and the limiting shaft 422 is slidably arranged in the limiting groove 411.

[0054] More specifically, the angle between the line connecting the limiting groove 411 with the center of the circle and the horizontal plane is in the range of 20° to 60°.

[0055] Furthermore, Figure 1 and Figure 2 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided by an embodiment of the present invention, the axes of the first rotating shaft 421 and the limiting shaft 422 are perpendicular to the axis of the guide sleeve 42 and are in the same plane.

[0056] like Figure 1 and Figure 2As shown, in a specific implementation of the perforating device for micro-disturbance investigation of the source area of ​​a contaminated site provided by an embodiment of the present invention, the linkage limit assembly includes a limit sleeve 51, a linkage sleeve 52, a first guide rod 53 and a positioning rod 54. The limit sleeve 51 is sleeved on the vertical perforating rod 20, and notifies the locking mechanism to lock the relative position of the limit sleeve 51 and the vertical perforating rod 20 to limit the perforating depth of the vertical perforating rod. A positioning plate 511 is provided on the side of the limit sleeve 51; the linkage sleeve 52 is slidably sleeved on the guide sleeve 42, and linkage blocks 521 are provided on both sides of the linkage sleeve 52, and the connecting blocks are provided on the connecting blocks. Vertical holes and transverse holes are provided in a staggered manner; the first guide rod 53 is provided on the side of the first rotating shaft 421 facing away from the vertical punching rod 20, the distance between the axis of the first guide rod 53 and the axis of the first rotating shaft 421 is equal to the distance between the axis of the vertical punching rod 20 and the axis of the first rotating shaft 421, and the first guide rod 53 is passed through the vertical hole; the positioning rod 54 is arranged horizontally and passed through the transverse hole to locate the position of the limit sleeve 51, the positioning plate 511 on the limit sleeve 51 abuts against the positioning rod 54, indicating that the limit sleeve 51 has reached the desired position, and after punching, the straight hole is connected with the inclined hole and will not penetrate the inclined hole.

[0057] A limit platform 11 is provided on the outer periphery of the vertical punching rod 20 on the base plate 10, and the upper end surface of the limit platform 11 is flush in height with the axis of the first rotating shaft 421; when the positioning plate 511 abuts against the positioning rod 54, the lower end surface of the limit sleeve 51 is flush in height with the intersection of the axis of the first guide rod 53 and the axis of the guide sleeve 42.

[0058] like Figure 3 As shown, it should be noted that the axis of the vertical punching rod 20, the axis of the oblique punching rod 30, the horizontal line passing through the axis of the first rotating shaft 421 and the axis of the first guide rod 53 form two triangles that are symmetrical about the center of the axis of the first rotating shaft 421, so that the punching depth of the straight hole corresponding to the oblique hole with a certain inclination angle is equal to the height difference between the intersection of the axis of the oblique punching rod 30 and the axis of the first guide rod 53 and the limit table 11. Then, the height of the limit sleeve 51 is positioned by the positioning rod 54, so that the lower end surface of the limit sleeve 51 is flush with the intersection of the axis of the oblique punching rod 30 and the axis of the first guide rod 53 in height.

[0059] Furthermore, Figure 2 and Figure 4 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, a vertically extending tooth row 21 is provided on the side of the vertical punching rod 20, and a receiving groove is provided on the inner side of the limiting sleeve 51, and a clamping block 512 is elastically provided in the receiving groove. The clamping block 512 has the freedom to extend out and retract into the receiving groove, and teeth are provided on the end face of the clamping block 512, and the upper and lower surfaces of the teeth are both inclined surfaces.

[0060] Specifically, the accommodating groove is provided with a spring, which pushes the clamping block 512 so that it can extend out of the accommodating groove and engage with the tooth row 21; a certain upward or downward external force is applied to the limiting sleeve 51, so that the clamping block 512 can overcome the elastic force of the spring and retract into the accommodating groove, thereby making the limiting sleeve 51 move up and down.

[0061] like Figure 2 and Figure 4 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, the locking mechanism is a locking rod 513, and the locking rod 513 is arranged on the side of the block 512 facing away from the tooth row 21, and slidingly cooperates with the limiting sleeve 51, and the length of the locking rod 513 is greater than the distance between the bottom of the accommodating groove and the bottom surface of the limiting sleeve 51; after the limiting sleeve 51 abuts against the limiting platform 11, the locking rod 513 is lifted up and protrudes out of the bottom of the accommodating groove, preventing the block 512 from retracting into the accommodating groove, thereby locking the position of the limiting sleeve 51 and the vertical punching rod 20.

[0062] When the guide sleeve 42 is stopped, the limit sleeve 51 also stops moving synchronously. At this time, the distance between the limit sleeve 51 and the limit platform 11 is the distance that the vertical punching rod 20 needs to move downward when punching. When the limit sleeve 51 contacts the limit platform 11, the locking rod 513 is pushed into the accommodating groove to prevent the block 512 from retracting into the accommodating groove, thereby locking the relative position of the limit sleeve 51 and the vertical punching rod 20 to avoid excessively deep straight hole punching and affecting the detection result.

[0063] like Figure 1 and Figure 2 As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, a locking bolt 55 is also provided on the linkage sleeve 52. The locking bolt 55 is threadedly matched with the linkage sleeve 52 and is suitable for abutting against the guide sleeve 42 to lock the relative position of the linkage sleeve 52 and the guide sleeve 42, that is, to lock the inclination angle of the oblique punching rod to ensure the punching accuracy of the oblique hole.

[0064] like Figure 1 and Figure 2As shown, in a specific implementation of the punching device for micro-disturbance investigation of the source area of ​​a contaminated site provided in an embodiment of the present invention, the linkage limit assembly also includes a second guide rod 56 and a slider 57, and the second guide rod 56 is arranged between the vertical punching rod 20 and the first guide rod 53; the slider 57 is slidably matched with the second guide rod 56, and is slidably matched with the positioning rod 54, so as to keep the positioning rod 54 vertical with the first guide rod 53 and the second guide rod 56, avoid bending of the positioning rod 54, and ensure the position accuracy of the positioning rod 54 and the limit sleeve 51, that is, to ensure the accuracy of the straight hole depth.

[0065] like Figure 1 and Figure 2 As shown, in a specific implementation of the perforating device for micro-disturbance investigation of the source area of ​​a contaminated site provided by an embodiment of the present invention, the vertical perforating rod 20 and the oblique perforating rod 30 are solid structures or tubular structures.

[0066] It should be noted that the solid structure or tubular structure can be selected according to the actual situation. When the diameter of the required detection hole is small and the soil is soft, a solid punching rod can be used directly to punch the hole; when the diameter is large and the soil is hard, a tubular punching rod can be selected, which is more labor-saving.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling device for micro-disturbance investigation of the source area of ​​a contaminated site, characterized in that: include: a base plate adapted to be fixed to the ground; A vertical punching rod, which is in sliding cooperation with the bottom plate and has the freedom to slide vertically, and is used to punch straight holes; An oblique punching rod is spaced apart on one side of the vertical punching rod and is used to punch an oblique hole, wherein the oblique hole is connected to the straight hole; An angle adjustment assembly is connected to the bottom plate and is slidably engaged with the oblique punching rod to adjust the inclination angle of the oblique punching rod; as well as A linkage limit assembly is connected to the bottom plate and is connected to the vertical punching rod and the angle adjustment assembly, and is used to limit the punching depth of the vertical punching rod according to the inclination angle of the oblique punching rod, so that the straight hole is connected to the oblique hole and does not penetrate the oblique hole; The angle adjustment component includes: Two ear plates are spaced apart on both sides of the oblique punching rod; and A guide sleeve is rotatably supported between the two ear plates, and the oblique punching rod is inserted into the guide sleeve and slidably engaged with the guide sleeve; A first rotating shaft is provided at the lower end of the guide sleeve, and a limiting shaft is provided at intervals on the upper side of the first rotating shaft. The first rotating shaft is rotatably engaged with the ear plate, and a limiting groove is provided on the ear plate with the first rotating shaft as the center, and the limiting shaft is slidably provided in the limiting groove; The axes of the first rotating shaft and the limiting shaft are perpendicular to the axis of the guide sleeve and are in the same plane; The linkage limit assembly includes: A limiting sleeve is sleeved on the vertical punching rod and locks the relative position of the limiting sleeve and the vertical punching rod through a locking mechanism to limit the punching depth of the vertical punching rod. A positioning plate is provided on the side of the limiting sleeve; A linkage sleeve and a sliding sleeve are arranged on the guide sleeve. Linkage blocks are provided on both sides of the linkage sleeve. Vertical holes and transverse holes are staggered on the linkage blocks. a first guide rod, disposed on a side of the first rotating shaft facing away from the vertical punching rod, wherein the distance between the axis of the first guide rod and the axis of the first rotating shaft is equal to the distance between the axis of the vertical punching rod and the axis of the first rotating shaft, and the first guide rod is inserted into the vertical hole; and A positioning rod is arranged horizontally and penetrates the horizontal hole to locate the position of the limiting sleeve. The positioning plate on the limiting sleeve abuts against the positioning rod to indicate that the limiting sleeve has reached the desired position, so that after punching, the straight hole is connected to the oblique hole and will not penetrate the oblique hole; A limit platform is provided on the outer periphery of the vertical punching rod on the base plate, and the upper end surface of the limit platform is flush with the axis of the first rotating shaft in height; when the positioning plate abuts the positioning rod, the lower end surface of the limit sleeve is flush with the intersection of the axis of the first guide rod and the axis of the guide sleeve in height.

2. The drilling device for micro-disturbance investigation of the source area of ​​a contaminated site according to claim 1, characterized in that: A vertically extending tooth row is provided on the side of the vertical punching rod, and a receiving groove is provided on the inner side of the limit sleeve. A card block is elastically provided in the receiving groove, and the card block has the freedom to extend and retract into the receiving groove. Teeth are provided on the end face of the card block, and the upper and lower surfaces of the teeth are both inclined surfaces.

3. The drilling device for micro-disturbance investigation of the source area of ​​a contaminated site according to claim 2, characterized in that: The locking mechanism is a locking rod, which is arranged on the side of the block facing away from the tooth row and slidingly cooperates with the limit sleeve. The length of the locking rod is greater than the distance between the bottom of the accommodating groove and the bottom surface of the limit sleeve. After the limit sleeve abuts against the limit platform, the locking rod is lifted up and protrudes out of the bottom of the accommodating groove, preventing the block from retracting into the accommodating groove, thereby locking the position of the limit sleeve and the vertical punching rod.

4. The drilling device for micro-disturbance investigation of the source area of ​​a contaminated site according to claim 1, characterized in that: The linkage sleeve is further provided with a locking bolt, which is threadably matched with the linkage sleeve and is suitable for abutting against the guide sleeve to lock the relative positions of the linkage sleeve and the guide sleeve.

5. The drilling device for micro-disturbance investigation of the source area of ​​a contaminated site according to claim 1, characterized in that: The linkage limit assembly also includes: a second guide rod, the second guide rod being disposed between the vertical punching rod and the first guide rod; The slider is slidably matched with the second guide rod and the positioning rod, and is used to keep the positioning rod perpendicular to the first guide rod and the second guide rod.

6. The drilling device for micro-disturbance investigation of a contaminated site source area according to any one of claims 1 to 5, characterized in that: The vertical punching rod and the oblique punching rod are solid structures or tubular structures.

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