CN219654641U - Improved core barrel for engineering geological investigation and drilling - Google Patents

Abstract

The utility model relates to an improved core barrel for engineering geological exploration drilling, and belongs to the technical field of drill rods. The improved core barrel comprises a plurality of sections of core barrel, two adjacent sections of core barrel are detachably connected, each section of core barrel comprises two core barrel pieces, the two core barrel pieces are detachably connected, and a plurality of core barrel pieces can be mutually spliced to form the core barrel. After the core barrel is drilled, connection between two adjacent core barrels can be relieved, each core barrel is disassembled, the core barrels are disassembled into two semicircular arc structures, and then the rock soil collected in the pipe can be taken out.

Description

Improved core barrel for engineering geological investigation and drilling

Technical Field

The utility model relates to the technical field of drill pipes, in particular to an improved core barrel for engineering geological exploration drilling.

Background

At present, when engineering geological investigation is carried out, the core barrel can penetrate into a soil layer to sample rock and soil, so that constructors can judge the condition and the property of the rock and soil, and follow-up construction is facilitated. The existing core barrel is usually a complete steel pipe, and after rock and soil enter the core barrel, the rock and soil sample needs to be taken out of the core barrel for constructors to judge the rock and soil condition. Two methods are commonly used, namely, the drill bit is removed, a slurry pump joint is communicated with the top end of a core barrel, a slurry pump is started, and rock and soil are flushed out of the barrel by using the pressure generated by the slurry pump; the second is to hoist the core barrel and shake out the core in the core barrel from a point to a point by hammering vibration.

However, the above method for taking out the rock and soil has the disadvantages that firstly, the pressure generated by pumping mud by a mud pump is used for pressing out the rock and soil, especially mucky soil and loose silt soil, which belong to macroporous soil and easily-denatured soil, the rock and soil is easy to compress and deform after receiving the mud pressure, the soil structure is changed, and the moisture in the mud can infiltrate into the soil, so that the moisture content of the soil is possibly influenced, and the mechanical property of the soil is further influenced; the second kind adopts hammering, can destroy soil body structure at this in-process, and the rock soil piece that hammering vibration dropped out often can not in time put the rock core case in addition, and upper and lower rock core is mixed together easily, can't put according to actual upper and lower relation and lead to the level to be disordered in putting the in-process.

In summary, when the core barrel is taken out of the rock sample, there is a risk of damaging the sample, so that the constructor cannot well judge the actual condition of the rock, and therefore, it is necessary to design an improved core barrel to solve the above-mentioned problems.

Disclosure of Invention

The embodiment of the utility model provides an improved core barrel for engineering geological exploration drilling, which aims to solve the problem that in the related art, when a rock and soil sample is taken out of the existing core barrel, the sample is easily damaged, so that constructors are interfered to judge the actual condition of the rock and soil.

The embodiment of the utility model provides an improved core barrel for engineering geological exploration drilling, which comprises the following components:

and each section of the core pipe comprises two core pipe pieces, the two core pipe pieces are detachably connected, and a plurality of core pipe pieces can be mutually spliced to form the core pipe.

In some embodiments, two adjacent sections of the core barrel are fixedly connected through a connecting piece.

In some embodiments, the connecting piece is a threaded sleeve, the upper end and the lower end of each section of the core barrel are provided with threaded structures, and two adjacent sections of the core barrels are connected through the threaded sleeve.

In some embodiments, two core segments are spliced to form one core segment, a protruding structure is arranged on the side wall of one core segment, and a groove matched with the protruding structure is arranged on the side wall of the other core segment.

In some embodiments, a gripping structure is disposed between two of the core segments.

In some embodiments, the gripping structure is a latch, and is disposed on an outer wall of the core segment.

In some embodiments, an insert is provided on one core segment, an opening is provided on the other core segment, the opening is matched with the insert, and after the insert is inserted into the opening, the top end of the insert can be elastically unfolded to be clamped and fixed.

In some embodiments, the top of the uppermost section of the core barrel is connected to an adapter.

In some embodiments, a drill bit is connected to the bottom of the lowermost section of the core barrel.

In some embodiments, the core barrel is threadably coupled to both the adapter and the drill bit.

The technical scheme provided by the utility model has the beneficial effects that:

the embodiment of the utility model provides an improved core barrel for engineering geological exploration drilling, which comprises a plurality of sections of core barrels, wherein two adjacent sections of core barrels are detachably connected, each section of core barrel comprises two core barrel pieces, the two core barrel pieces are detachably connected, and a plurality of core barrel pieces can be mutually spliced to form the core barrel.

After the core barrel is drilled, connection between two adjacent core barrels can be relieved, each core barrel is disassembled, the core barrels are disassembled into two semicircular arc structures, and then the rock soil collected in the pipe can be taken out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

FIG. 2 is a front view of the structure of FIG. 1;

FIG. 3 is a schematic view of the core barrel of FIG. 1;

FIG. 4 is a schematic view of the core segment of FIG. 3;

FIG. 5 is a front view of the core segment of FIG. 4;

FIG. 6 is a schematic view of the connector of FIG. 1;

fig. 7 is a schematic view of the drill bit of fig. 1.

Reference numerals:

1. a conversion joint; 2. a core barrel; 3. a connecting piece; 4. a drill bit; 5. core segment.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides an improved core barrel for engineering geological exploration drilling, which can solve the problem that in the related art, when a rock and soil sample is taken out of the existing core barrel, the sample is easily damaged, so that constructors are interfered to judge the actual condition of the rock and soil.

Referring to fig. 1 to 4, an embodiment of the present utility model provides an improved core barrel for engineering geological exploration drilling, which includes a plurality of core barrels 2, two adjacent core barrels 2 are detachably connected, each core barrel 2 includes two core barrel pieces 5, the two core barrel pieces 5 are detachably connected, and a plurality of core barrel pieces 5 can be mutually spliced to form the core barrel 2.

After the core barrel 2 is drilled, connection between two adjacent sections of core barrels 2 can be relieved, each section of core barrel 2 is disassembled, the core barrels 2 are disassembled into two semicircular arc structures, and then the rock and soil collected in the pipe can be taken out.

In some alternative embodiments, referring to fig. 2-5, an embodiment of the present utility model provides an improved core barrel for engineering geological survey drilling, where two adjacent core barrels 2 are connected and fixed by a connector 3. In some use cases, the connecting piece 3 is a threaded sleeve, the upper end and the lower end of each section of core barrel 2 are provided with threaded structures, and two adjacent sections of core barrels 2 are connected through the threaded sleeve.

According to the depth of drilling and the length difference of each section of core barrel 2, a plurality of sections of core barrels 2 can be selected for connection so as to ensure the drilling effect. The outer walls at the upper end and the lower end of each section of core barrel 2 are provided with threaded structures, and two adjacent sections of core barrels 2 are connected through threaded sleeves, so that the reliability of connection is guaranteed, and the disassembly is convenient.

In some alternative embodiments, referring to fig. 3 to 5, an embodiment of the present utility model provides an improved core barrel for engineering geological exploration drilling, two core segments 5 are spliced to form a core barrel 2, a protruding structure is disposed on a side wall of one core segment 5, and a groove matching the protruding structure is disposed on a side wall of the other core segment 5. In use, the protruding structure of one core segment 5 is clamped into the groove formed in the other core segment 5, the two core segments 5 are spliced and connected to form a core tube 2, and the upper end and the lower end of the core tube 2 are respectively provided with a threaded structure for connection.

In some alternative embodiments, a gripping structure is provided between two adjacent core segments 5. The clamping structure can be a mortise and tenon structure. In use, the clamping structure can also be a lock catch, the clamping structure is arranged on the outer wall of the core segment 5, when drilling is carried out, the two core segments 5 are fixed through the lock catch, after drilling is completed, the lock catch is released, the connection between the two core segments 5 can be released, and accordingly, rock and soil can be taken out.

Under some use conditions, an insert is arranged on one core segment 5, an opening matched with the insert is arranged on the other core segment 5, and after the insert is inserted into the opening, the top end of the insert can be elastically unfolded to be clamped and fixed. The inserts are arranged on the side face of the core segment 5 (namely, the contact face when the inserts are spliced with the other core segment 5), the holes are also formed in the side face of the other core segment 5, the expanding distance of the inserts in the normal state is larger than the length of the holes, the inserts have certain elasticity, and after the inserts are inserted into the holes, the two ends of each insert firmly contact the inner wall of each hole, so that the fixing effect is achieved. In actual use, the insert can be a metal elastic buckle, and is stable and durable.

In actual use, the top of the uppermost core barrel 2 is connected with an adapter 1 for connection with drilling equipment, and the bottom of the lowermost core barrel 2 is connected with a drill bit 4. The core barrel 2 is connected with the adapter 1 and the drill bit 4 through threads, and the core barrel 2 is conveniently taken down in a threaded connection mode, so that the rock soil is taken out.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An improved core barrel for use in engineering geological survey drilling, comprising:

the multi-section core tube (2), two adjacent sections can be dismantled between core tube (2) and be connected, every section core tube (2) include two core segment (5), two can dismantle between core segment (5) and be connected, and a plurality of core segment (5) can mutually amalgamate, constitute core tube (2).

2. An improved core barrel for use in engineering geological survey drilling as claimed in claim 1, wherein:

two adjacent sections of the core pipes (2) are connected and fixed through connecting pieces (3).

3. An improved core barrel for use in engineering geological survey drilling as claimed in claim 2, wherein:

the connecting piece (3) is a threaded sleeve, the upper end and the lower end of each section of the core barrel (2) are provided with threaded structures, and two adjacent sections of the core barrels (2) are connected through the threaded sleeve.

4. An improved core barrel for use in engineering geological survey drilling as claimed in claim 1, wherein:

two core segments (5) are spliced to form one section of core tube (2), the side wall of one core segment (5) is provided with a protruding structure, and the side wall of the other core segment (5) is provided with a groove matched with the protruding structure.

5. An improved core barrel for use in engineering geological survey drilling as claimed in claim 1, wherein:

a clamping structure is arranged between the two core segments (5).

6. An improved core barrel for use in engineering geological survey drilling as claimed in claim 5, wherein:

the clamping structure is a lock catch and is arranged on the outer wall of the core segment (5).

7. An improved core barrel for use in engineering geological survey drilling as claimed in claim 1, wherein:

one piece of core segment (5) is provided with an insert, the other piece of core segment (5) is provided with an opening matched with the insert, and after the insert is inserted into the opening, the top end of the insert can be elastically unfolded to be clamped and fixed.

8. An improved core barrel for use in engineering geological survey drilling as claimed in claim 1, wherein:

the top of the uppermost section of the core tube (2) is connected with an adapter (1).

9. An improved core barrel for use in engineering geological survey drilling as claimed in claim 8, wherein:

the bottom of the section of the core tube (2) at the lowest end is connected with a drill bit (4).

10. An improved core barrel for use in engineering geological survey drilling as claimed in claim 9, wherein:

the core barrel (2) is connected with the adapter (1) and the drill bit (4) through threads.