CN220378248U - Plugging device for geological drilling backfill - Google Patents

Abstract

The utility model discloses a plugging device for geological drilling backfill, which comprises a plugging head, a rock-soil loading pipe fitting and a grouting pipe, wherein the rock-soil loading pipe fitting is connected with the plugging head and is used for accommodating a rock core taken out by a geological investigation drilling; the grouting pipe is communicated with the rock-soil loading pipe fitting, a plurality of groups of grouting structures are arranged on the grouting pipe, and the plurality of groups of grouting structures are arranged at intervals along the length direction of the grouting pipe; wherein, the shutoff head can take the ground loading pipe fitting to creep into to the bottom of geological survey drilling, and the thick liquid can circulate to the geological survey drilling through the slip casting structure of slip casting pipe. The plugging device is provided with a rock-soil loading pipe fitting, and can backfill a rock core taken out by geological investigation drilling, and local materials are taken out for plugging. The plugging device is further used for pouring slurry into the drilled hole through the grouting pipe, the lower portion of the hole can be filled with the slurry after solidification of the slurry and the rock core, hole collapse and sinking are avoided, and meanwhile plugging difficulty is reduced. The utility model is widely applied to the technical field of ground drilling backfill plugging.

Description

Plugging device for geological drilling backfill

Technical Field

The utility model relates to the technical field of municipal road construction, in particular to a plugging device for geological drilling backfill.

Background

In the projects of urban road extension, subway construction, bridge tunnel construction and the like, geological investigation is needed, and geological drilling is constructed at relevant project positions. Holes can be left on site after geological drilling coring is completed, the holes need to be effectively backfilled and plugged, and otherwise safety accidents are easy to cause.

At present, geological drilling plugging usually adopts means such as core backfilling, cement slurry pouring and the like, wherein the core backfilling effect is poor, the defects of high randomness and difficult filling of the lower part of a hole exist, after vehicles on municipal roads vibrate, holes collapse in the holes, ground pits and the like are easily caused, and a large safety risk exists; although the plugging effect of the grouting cement slurry is good, the cement slurry needs time for initial setting, holes of geological drilling close to the ground surface position collapse, a large safety risk exists, and in addition, the later-stage construction process needs additional organization personnel for backfilling, the construction period is long, and the labor cost is high.

Therefore, it is needed to provide a plugging device with high construction efficiency and good plugging effect.

Disclosure of Invention

In order to solve at least one of the technical problems, the utility model provides a plugging device for geological drilling backfilling, which adopts the following technical scheme:

the plugging device for geological drilling backfill comprises a plugging head, a rock-soil loading pipe fitting and a grouting pipe, wherein the rock-soil loading pipe fitting is connected with the plugging head and is used for accommodating a rock core taken out by a geological investigation drilling; the grouting pipe is communicated with the rock-soil loading pipe fitting, a plurality of groups of grouting structures are arranged on the grouting pipe, and the plurality of groups of grouting structures are arranged at intervals along the length direction of the grouting pipe; the sealing plug can guide the rock-soil loading pipe fitting to drill to the bottom of the geological investigation drilling hole, and slurry can flow into the geological investigation drilling hole through the grouting structure of the grouting pipe.

In certain embodiments of the utility model, the grouting pipe has a first diameter and the earth loading pipe has a second diameter, the second diameter being greater than the first diameter.

In certain embodiments of the utility model, the plugging device further comprises a connector, a first end of the connector is detachably connected with the grouting pipe, a second end of the connector is detachably connected with the rock-soil loading pipe, and the grouting pipe is communicated with the rock-soil loading pipe through the connector.

In some embodiments of the utility model, the plug head has a first end abutting the bottom of the borehole and a second end connected to the earth-rock loading pipe, the first end of the plug head being of a third diameter, the second end of the plug head being of a second diameter, the second diameter being greater than the third diameter.

In some embodiments of the present utility model, the geotechnical loading pipe is provided with a plurality of groups of decompression structures, and the plurality of groups of decompression structures are arranged at intervals along the length direction of the geotechnical loading pipe.

In certain embodiments of the present utility model, the relief structure comprises a plurality of circumferentially arranged relief holes, the plurality of relief holes being spaced apart or distributed in a quincuncial pattern.

In some embodiments of the present utility model, the grouting structure comprises a plurality of grouting holes circumferentially arranged, and the plurality of grouting holes are distributed at intervals or distributed in a quincuncial shape.

In some embodiments of the present utility model, a plurality of grouting pipes are provided, and two adjacent grouting pipes are detachably connected.

In certain embodiments of the present utility model, the plugging device further comprises a connecting conduit detachably connected to the grouting pipe, and the grouting pipe is communicated with the grouting machine through the connecting conduit.

In some embodiments of the present utility model, a plurality of connecting conduits are provided, and two adjacent connecting conduits are detachably connected.

The embodiment of the utility model has at least the following beneficial effects: the plugging device is provided with a rock-soil loading pipe fitting, and can backfill a rock core taken out by geological investigation drilling, and local materials are taken out for plugging. The plugging device is further used for pouring slurry into the drilled hole through the grouting pipe, the lower portion of the hole can be filled with the slurry after solidification of the slurry and the rock core, hole collapse and sinking are avoided, and meanwhile plugging difficulty is reduced. The utility model is widely applied to the technical field of ground drilling backfill plugging.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a plugging device for geological borehole backfilling;

FIG. 2 is a schematic illustration of the use of the occlusion device provided in FIG. 1;

fig. 3 is a schematic, finished view of the occlusion device provided in fig. 1.

Reference numerals: 10. a blocking head; 20. a rock-soil loading pipe fitting; 21. a pressure relief vent; 30. a connecting piece; 40. grouting pipe; 41. grouting holes; 50. and connecting the guide pipes.

Detailed Description

Embodiments of the present utility model are described in detail below in conjunction with fig. 1-3, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that, if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used as directions or positional relationships based on the directions shown in the drawings, the directions are merely for convenience of description and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the projects of urban road extension, subway construction, bridge tunnel construction and the like, geological investigation is needed, and geological drilling is constructed at relevant project positions. Holes can be left on site after geological drilling coring is completed, the holes need to be effectively backfilled and plugged, and otherwise safety accidents are easy to cause. Geological drilling plugging usually adopts means such as core backfilling and cement slurry filling, wherein the core backfilling effect is poor, the defects of high randomness and difficult filling of the lower part of a hole exist, after vehicles on municipal roads vibrate, holes collapse in the holes, ground pits and the like are easily caused, and a large safety risk exists; although the plugging effect of the grouting cement slurry is good, the cement slurry needs time for initial setting, holes of geological drilling close to the ground surface position collapse, a large safety risk exists, and in addition, the later-stage construction process needs additional organization personnel for backfilling, the construction period is long, and the labor cost is high.

At present, urban management is strict, batches must be reported and deposit is paid when investigation is carried out on municipal roads, geological drilling holes after drilling is completed are all required to be plugged, deposit can be retrieved after acceptance by municipal road management departments is qualified, and if acceptance is not qualified, deposit can be withheld and can be subjected to administrative punishment or notification.

In view of the above practical conditions and prevention risks, the application provides a plugging device with high construction efficiency and good plugging effect.

The plugging device for geological drilling backfill provided by the utility model comprises a plugging head 10, a rock-soil loading pipe fitting 20 and a grouting pipe 40, wherein the rock-soil loading pipe fitting 20 is connected with the plugging head 10, and the rock-soil loading pipe fitting 20 is used for containing a rock core taken out by a geological investigation drilling; the grouting pipe 40 is communicated with the rock-soil loading pipe fitting 20, a plurality of groups of grouting structures are arranged on the grouting pipe 40, and the plurality of groups of grouting structures are arranged at intervals along the length direction of the grouting pipe 40; wherein the plugging head 10 is capable of carrying the earth-rock loading tube 20 to drill into the bottom of the geological survey borehole, and slurry is capable of flowing into the geological survey borehole through the grouting structure of the grouting pipe 40. The earth-rock loading pipe 20 of the plugging device can backfill the core taken out of the geological survey drill hole, and is plugged by taking local materials. The plugging device is also used for pouring slurry into the drilled hole through the grouting pipe 40, and the slurry and the rock core can be solidified to fill the lower part of the hole to avoid hole collapse and sinking, and meanwhile, the plugging difficulty is reduced. The utility model is widely applied to the technical field of ground drilling backfill plugging.

In some of these embodiments, the grouting pipe 40 has a first diameter and the earth loading pipe 20 has a second diameter that is greater than the first diameter. It will be appreciated that the grouting pipe 40 is of smaller diameter to facilitate rapid injection of slurry into the borehole hole, and the earth loading pipe 20 is of larger diameter to avoid collapse of the hole after backfilling. In combination with the drawings, the rock-soil loading pipe fitting 20 is in clearance fit with the drilled hole so as to facilitate the placement of the plugging device, and meanwhile, the larger the diameter of the rock-soil loading pipe fitting 20 is, the better the plugging device has a filling effect on the bottom of the drilled hole. In this embodiment, the second diameter is no greater than 90mm and the first diameter is no greater than 42mm.

Further, in some of these embodiments, a plurality of grouting pipes 40 are provided, and two adjacent grouting pipes 40 are detachably connected. It will be appreciated that the overall height of the plugging device can be adjusted by assembling a plurality of grouting pipes 40 to accommodate backfill plugging of geological survey boreholes of different specifications. Specifically, the two ends of each grouting pipe 40 are respectively provided with an internal thread and an external thread which are matched with each other, so that any two grouting pipes 40 can be in butt joint to realize the extension of the grouting pipe 40, and the joint of the two grouting pipes 40 is sealed. In other embodiments, two adjacent grouting pipes 40 can be detachably connected through plugging or clamping.

Specifically, referring to the drawings, the grouting structure includes a plurality of grouting holes 41, and the plurality of grouting holes 41 are spaced apart along the circumferential direction of the grouting pipe 40. In some embodiments, the plurality of grouting holes 41 are equally spaced along the peripheral wall of the grouting pipe 40; in other embodiments, the grouting holes 41 are staggered vertically along the peripheral wall of the grouting pipe 40 in a quincuncial shape. It will be appreciated that the size of the grouting holes 41 directly affects the rate of slurry injection into the drilled holes and thus the efficiency of the drilled hole plugging; at the same time, the grouting holes 41 are not too large to ensure the quality of the plugging of the drilled holes. In this embodiment, the diameter of the grouting holes 41 is not more than 10mm.

It will be appreciated that the grouting pipe 40 is a hollow rod, and the grouting pipe 40 is made of hard material so as to facilitate the insertion of the grouting pipe 40 into the borehole hole and the pushing of the earth-rock loading pipe 20 and the plugging head 10 to the bottom of the borehole hole. Specifically, the grouting pipe 40 may be made of PVC, metal material, or the like.

In some of these embodiments, the plugging device further comprises a connector 30, a first end of the connector 30 being detachably connected to the grouting pipe 40, a second end of the connector 30 being detachably connected to the rock loading tube 20, the grouting pipe 40 being in communication with the rock loading tube 20 via the connector 30. Referring to the drawings, the first end of the connecting member 30 is set to a first diameter, the second end is set to a second diameter, the first end is fixedly connected with the second end to realize the relative fixation of the grouting pipe 40 and the rock-soil loading pipe 20, and the first end is communicated with the second end to enable the grouting pipe 40 to be communicated with the inner cavity of the rock-soil loading pipe 20, so that the slurry can be conveniently and rapidly injected.

It will be appreciated that the connector 30 is provided to facilitate the relative securement of the grouting pipe 40 of the first diameter to the earth loading pipe 20 of the second diameter; in other embodiments, the first and second ends of the connector 30 transition smoothly, and the connector 30 is configured in a frustoconical configuration to connect the grouting pipe 40 with the earth loading tube 20. In this embodiment, the height of the connecting member 30 is not more than 5cm to ensure the centering and connection strength between the grouting pipe 40 and the earth loading pipe 20.

In some of these embodiments, the rock-soil loading tube 20 is provided with a plurality of groups of relief structures that are spaced apart along the length of the rock-soil loading tube 20. It will be appreciated that the pressure reducing structure can eliminate the pressure difference between the inside and the outside of the rock-soil loading pipe fitting 20 so as to fully fill the holes of the drilled holes with slurry, avoid the influence of bubbles generated by the grouting body on the plugging quality, enhance the consistency between the grouting body and the rock core, and avoid the problem of collapse occurring after hole filling.

Specifically, the relief structure includes a plurality of relief holes 21, the plurality of relief holes 21 being spaced apart along the peripheral wall of the earth-rock loading tube 20. In some embodiments, the plurality of relief holes 21 are equally spaced along the perimeter wall of the earth-rock loading tube 20; in other embodiments, the plurality of pressure relief holes 21 are staggered up and down the perimeter wall of the earth-rock loading tube 20 in a quincuncial pattern. It will be appreciated that the diameter of the relief hole 21 is not too large, which would otherwise lead to core leakage and adversely affect the packing effect of the drilled hole. In this embodiment, the diameter of the pressure relief hole 21 is no greater than 10mm and the wall thickness of the earth-rock loading tube 20 is no greater than 1.2mm.

In some of these embodiments, the plug 10 has a first end abutting the bottom of the borehole and a second end connected to the earth-loading tubular 20, the first end of the plug 10 being of a third diameter, the second end of the plug 10 being of a second diameter, the second diameter being greater than the third diameter. As can be appreciated from a review of the accompanying figures, the plugging head 10 has a frusto-conical configuration, and the first end of the plugging head 10 has a smaller diameter to facilitate the smooth insertion of the plugging device into the borehole. Specifically, the plugging head 10 is made of hard materials, and the plugging head 10 is detachably connected with the rock-soil loading pipe fitting 20. In this embodiment, the plug 10 is a PVC product, the third diameter is not greater than 30mm, the height of the plug 10 is not greater than 5cm, the wall thickness is not greater than 1.2mm, and the plug 10 is in threaded connection with the geotechnical loading pipe 20.

In some of these embodiments, the occlusion device further comprises a connecting conduit 50, the connecting conduit 50 being detachably connected to the grouting pipe 40, the grouting pipe 40 being in communication with the grouting machine via the connecting conduit 50. Further, a plurality of connecting ducts 50 are provided, and two adjacent connecting ducts 50 are detachably connected. It will be appreciated that the overall length of the plugging device can be adjusted by removing the connecting conduit 50 to facilitate communication between the grouting pipe 40 and the grouting machine.

Specifically, in this embodiment, the two ends of the connecting conduit 50 are respectively provided with an internal thread and an external thread so as to facilitate the disassembly and assembly between two adjacent connecting conduits 50, and meanwhile, the butt joint between the connecting conduit 50 and the grouting pipe 40 can be realized. In other embodiments, the connecting conduit 50 is provided as a flexible tube that can be cut to communicate the grouting pipe 40 with the grouting machine as needed for use.

In the following, the utility model is described in detail with reference to a specific embodiment, it being noted that the following description is merely illustrative and not a specific limitation of the utility model.

Assembling the plugging head 10 and the rock-soil loading pipe fitting 20, and filling the assembled plugging head 10 and the assembled rock-soil loading pipe fitting 20 with cores taken out from geological investigation drilling holes, and filling the cores properly;

assembling a connecting piece 30, a grouting pipe 40 and a connecting guide pipe 50 at the other end of the rock-soil loading pipe fitting 20, then extending the plugging device into a drilling hole, and assembling the connecting guide pipe 50 in the placing process until the plugging head 10 is abutted with the bottom of the drilling hole;

the free end of the connecting conduit 50 is in butt joint with a grouting machine, the grouting machine is started to inject cement slurry into the drilling holes through the plugging device, the cement slurry sequentially enters the plugging device through the connecting conduit 50, the grouting pipe 40 and the rock-soil loading pipe fitting 20 and fills the drilling holes through the grouting holes 41 and the decompression holes 21, the cement slurry firstly replaces residual muddy water in the drilling holes to be discharged out of the ground surface, and the muddy water and the cement slurry discharged out of the ground surface are collected into a slurry pond;

stopping grouting when the cement slurry is filled to a position 10-15 cm below the ground, cutting the connecting conduit 50 beyond the cement slurry, backfilling the concrete pavement or the asphalt pavement drilled by the geological survey drilling hole into the drilling hole, manually filling gaps with the cement slurry, leveling the pavement, and completing the plugging of the geological survey drilling hole.

The plugging device provided by the utility model can utilize the core taken out from the drill hole as a backfill material to support, and simultaneously fills the gap through cement slurry to enhance the plugging effect, so that the advantages of core backfill and grouting plugging are effectively combined, the cement slurry solidification time is shortened, the pavement supporting effect is ensured, the construction period is shortened, and the urban management requirement is met.

In the description of the present specification, if a description appears that makes reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A plugging device for geological borehole backfill, comprising:

a stopper (10);

the rock-soil loading pipe fitting (20), the rock-soil loading pipe fitting (20) is connected with the blocking head (10), and the rock-soil loading pipe fitting (20) is used for containing a rock core taken out by a geological investigation drill hole;

the grouting device comprises a grouting pipe (40), wherein the grouting pipe (40) is communicated with a rock-soil loading pipe fitting (20), a plurality of groups of grouting structures are arranged on the grouting pipe (40), and the plurality of groups of grouting structures are arranged at intervals along the length direction of the grouting pipe (40);

wherein, the shutoff head (10) can take the ground loading pipe fitting (20) to creep into to the bottom of geological investigation drilling, and thick liquid can circulate to geological investigation drilling through the slip casting structure of slip casting pipe (40).

2. The plugging device for geological borehole backfill of claim 1, wherein: the grouting pipe (40) has a first diameter and the earth loading pipe (20) has a second diameter, the second diameter being greater than the first diameter.

3. The plugging device for geological borehole backfill of claim 2, wherein: the plugging device further comprises a connecting piece (30), wherein a first end of the connecting piece (30) is detachably connected with the grouting pipe (40), a second end of the connecting piece (30) is detachably connected with the rock-soil loading pipe fitting (20), and the grouting pipe (40) is communicated with the rock-soil loading pipe fitting (20) through the connecting piece (30).

4. The plugging device for geological borehole backfill of claim 2, wherein: the plug (10) is provided with a first end abutting against the bottom of the drill hole and a second end connected with the rock-soil loading pipe fitting (20), the first end of the plug (10) is of a third diameter, the second end of the plug (10) is of a second diameter, and the second diameter is larger than the third diameter.

5. The plugging device for geological borehole backfill of claim 1, wherein: the rock-soil loading pipe fitting (20) is provided with a plurality of groups of decompression structures, and the plurality of groups of decompression structures are arranged at intervals along the length direction of the rock-soil loading pipe fitting (20).

6. The plugging device for geological borehole backfill of claim 5, wherein: the pressure reducing structure comprises a plurality of pressure reducing holes (21) which are circumferentially arranged, and the pressure reducing holes (21) are distributed at intervals or distributed in a quincuncial shape.

7. The plugging device for geological borehole backfill of claim 1, wherein: the grouting structure comprises a plurality of circumferentially arranged grouting holes (41), and the grouting holes (41) are distributed at intervals or in a quincuncial shape.

8. The plugging device for geological borehole backfill of claim 1, wherein: the grouting pipes (40) are provided with a plurality of grouting pipes, and two adjacent grouting pipes (40) are detachably connected.

9. The plugging device for geological borehole backfill according to any one of claims 1 to 8, wherein: the plugging device further comprises a connecting conduit (50), wherein the connecting conduit (50) is detachably connected with the grouting pipe (40), and the grouting pipe (40) is communicated with the grouting machine through the connecting conduit (50).

10. The plugging device for geological borehole backfill of claim 9, wherein: the connecting conduits (50) are provided in plurality, and two adjacent connecting conduits (50) are detachably connected.