Reconnaissance drilling rock stratum hole cleaning and muddy water replacement construction structure

Abstract

The invention relates to the technical field of reconnaissance drilling, and discloses a reconnaissance drilling rock stratum hole cleaning and muddy water replacement construction structure which comprises a drill rod, a reconnaissance drilling comprises a soil layer hole formed in a soil layer and a rock stratum hole formed in a rock stratum, and a sleeve is arranged in the soil layer hole; the drill rod is sleeved with a wall brushing device, and bristles used for brushing rock stratum holes are arranged on the periphery of the wall brushing device. The top of the casing pipe is connected with a sealing cover, the upper portion of the drill rod penetrates through the sealing cover to form an upper section, the upper section is connected with a drainage connector for draining muddy water in a reconnaissance drill hole, and the sealing cover is provided with a water injection connector for injecting clear water into the reconnaissance drill hole; the interior of the drill rod is hollow, the drill rod is provided with a rod inner hole allowing muddy water in a reconnaissance drill hole to enter, the bottom of the drill rod is connected with a hollow connector, a hollow cavity is formed in the connector, and a bottom water outlet allowing the muddy water in the reconnaissance drill hole to enter is formed in the bottom of the connector; therefore, rock stratum holes are cleaned, and the working efficiency of muddy water replacement is improved.

Description

Technical Field

[0001] The invention patent relates to the technical field of exploration drilling, specifically, to the construction structure of exploration drilling rock formation hole cleaning and turbid water replacement. Background Art

[0002] In geotechnical engineering investigation, drilling sampling is a key step, but it is often affected by factors such as soil hole collapse and mud on the hole wall, which makes it difficult to judge the lithology of the rock formation. Therefore, cleaning the mud in the rock formation holes, sediment at the bottom of the holes and other impurities is a very critical construction project.

[0003] In the existing exploration drilling technology, high-pressure water flow is directly used to clean the exploration borehole, but the high-pressure water flow flushing will cause erosion to the soil pores, causing the risk of soil pores, and it is impossible to effectively replace the turbid water in the exploration borehole.

[0004] After continuously injecting clean water, the turbid water in the exploration borehole is still difficult to completely replace for a long time, which increases the construction cost and the risk of hole collapse, and cannot meet the construction efficiency and quality requirements. Summary of the invention

[0005] The purpose of the present invention is to provide a construction structure for cleaning and replacing turbid water in exploration drilling holes, aiming to solve the problem in the prior art that turbid water in exploration drilling holes is difficult to replace.

[0006] The present invention is implemented as follows: a construction structure for cleaning a rock formation hole of an exploration drilling hole and replacing turbid water comprises a drill rod, wherein the exploration drilling hole comprises a soil layer hole formed in a soil layer and a rock layer hole formed in a rock layer, wherein a casing is arranged in the soil layer hole; a wall brush is sleeved on the drill rod, wherein the outer periphery of the wall brush has bristles for brushing the rock formation hole;

[0007] The top of the casing is connected with a sealing cover, the upper part of the drill pipe passes through the sealing cover to form an upper section, the upper section is connected with a drainage joint for draining turbid water in the exploration borehole, and the sealing cover is provided with a water injection joint for injecting clean water into the exploration borehole;

[0008] The interior of the drill rod is hollow and has an inner hole for turbid water in the exploration borehole to enter. The bottom of the drill rod is connected to a hollow connector, which has a hollow cavity. The bottom of the connector forms a bottom drainage outlet for turbid water in the exploration borehole to enter.

[0009] Furthermore, the upper portion of the rock formation hole has an upwardly arranged annular step, the annular step is located below the soil formation hole, the bottom of the casing is embedded in the rock formation hole, and abuts against the annular step from top to bottom.

[0010] Furthermore, the drainage joint is connected with a drainage hose.

[0011] Furthermore, the drainage hose is connected to a water pump.

[0012] Furthermore, the wall brush comprises an elastic sleeve, the elastic sleeve is fixedly mounted on the drill rod, and the bristles are formed on the outer circumference of the elastic sleeve and are arranged around the circumference of the elastic sleeve.

[0013] Furthermore, the sealing cover is provided with a gland, the drill rod passes through the gland, and an annular gap is formed between the gland and the outer periphery of the drill rod. The gland seals the annular gap by rotating and adjusting, so that the exploration borehole is in a high-pressure sealing state.

[0014] Furthermore, the drill rod passes through the middle part of the sealing cover, and the drainage joint is coaxially arranged with the drill rod; the water injection joint is arranged in an inclined state and is skewed with the drainage joint.

[0015] Furthermore, the lower portion of the sealing cover is embedded in the top of the sleeve and is threadedly connected to the sleeve.

[0016] Furthermore, along the direction from top to bottom of the connector, the upper part of the connector expands outward to form an expansion stage arranged obliquely upward, and the expansion stage is arranged around the circumference of the connector; a plurality of different-direction holes are arranged on the expansion stage, and the different-direction holes are arranged around the circumference of the connector at intervals, and the different-direction holes are arranged obliquely in the same direction as the expansion stage, and are arranged obliquely in a different direction from the bottom drain port;

[0017] The lower part of the connector has a hollow straight section, the top of the straight section is butted against the bottom of the flaring stage, the bottom of the straight section forms the bottom drain port, and the flaring stage and the straight section enclose to form the hollow cavity;

[0018] The bottom of the flaring stage has a bending transition portion that is connected to the top of the straight tube section. The different-direction hole is bent and passes through the bending transition portion. The upper part of the different-direction hole is formed in the flaring stage, and the lower part of the different-direction hole is formed in the straight tube section.

[0019] Furthermore, the elastic sleeve is provided with a plurality of hair implantation holes, the plurality of hair implantation holes are arranged around the circumference of the elastic sleeve, and the hair implantation holes penetrate the outer circumference of the elastic sleeve to form an outer circumferential opening;

[0020] The hair implanting hole is filled with an elastic block, the elastic coefficient of the elastic block is greater than the elastic coefficient of the elastic sleeve; the inner section of the bristles is embedded in the elastic block and forms an integral body with the elastic block, the outer section of the bristles passes through the peripheral opening and extends to the periphery of the elastic sleeve, and there is an elastic gap between the outer end of the bristles and the peripheral opening;

[0021] The peripheral openings are arranged in strips, and the peripheral openings of adjacent hair-planting holes are arranged vertically; the hair-planting holes are spherical, the elastic block is spherical, and the periphery of the elastic block is integrated with the elastic sleeve; the interior of the elastic block is hollow and has a spherical cavity, and the inner section of the bristles extends into the spherical cavity.

[0022] Compared with the prior art, the exploration drilling rock hole cleaning and turbid water replacement construction structure provided by the present invention uses a drill rod and a wall brush sleeved on the drill rod, and the outer periphery of the wall brush has bristles, so that the bristles can effectively clean the impurities in the rock hole formed in the rock formation;

[0023] The casing is set in the soil hole, and the top is connected with a sealing cover to ensure that the upper part of the drill pipe is sealed with the drainage joint and the water injection joint, so as to realize the injection and discharge of turbid water and improve the turbid water replacement effect;

[0024] The drill pipe is hollow inside, and the hollow connector at the bottom is provided with a bottom drain port, which facilitates the smooth entry of turbid water into the hole in the survey borehole, thereby improving the cleaning efficiency and construction quality, and realizing efficient cleaning and turbid water replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the construction structure of the exploration drilling rock formation hole cleaning and turbid water replacement provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the wall brush and the connector structure provided by the present invention in a rock formation hole;

[0027] Figure 3 It is a structural schematic diagram of the wall brush provided by the present invention;

[0028] Figure 4 It is a structural schematic diagram of a connector provided by the present invention;

[0029] In the figure: soil layer 102, rock layer 103, soil layer hole 104, drill rod 201, casing 202, annular step 203, bristles 301, elastic sleeve 302, elastic block 303, implanted hole 304, drainage joint 401, water injection joint 402, gland 403, sealing cover 404, water pump 405, drainage hose 406, connector 501, expansion stage 502, angular hole 503, straight section 504, transition section 505, bottom drainage outlet 506. DETAILED DESCRIPTION

[0030] 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.

[0031] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0032] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Reference Figure 1-4 The figure shows a preferred embodiment of the present invention.

[0034] The exploration drilling rock hole cleaning and turbid water replacement construction structure includes a drill rod 201, which provides a channel for cleaning and turbid water replacement; the exploration drilling hole includes a soil hole 104 formed in the soil layer 102 and a rock hole formed in the rock layer 103, and a casing 202 is provided in the soil hole 104, and the casing 202 can prevent the hole from collapsing and provide structural support for subsequent cleaning work; a wall brush is sleeved on the drill rod 201, and the outer periphery of the wall brush has bristles 301 for brushing the rock hole, and the bristles 301 remove impurities in the rock hole through physical swinging friction;

[0035] The top of the casing 202 is connected with a sealing cover 404, and the upper part of the drill pipe 201 passes through the sealing cover 404 to form an upper section, and the upper section is connected with a drainage joint 401 for draining the turbid water in the exploration borehole, and the sealing cover 404 is provided with a water injection joint 402 for injecting clean water into the exploration borehole. In this way, the injected clean water and the discharged turbid water are carried out in a closed environment, which improves the cleaning efficiency;

[0036] The interior of the drill rod 201 is hollow and has an inner hole for turbid water in the exploration borehole to enter. The bottom of the drill rod 201 is connected to a hollow connector 501, which has a hollow cavity. The bottom of the connector 501 forms a bottom drain port 506 for turbid water in the exploration borehole to enter. This ensures that during the cleaning process, turbid water in the exploration borehole can be effectively discharged, and clean water can be smoothly injected to complete the turbid water replacement.

[0037] The above-mentioned exploration borehole cleaning and turbid water replacement construction structure is provided through the drill rod 201 and the wall brush device is sleeved on the drill rod 201. The outer periphery of the wall brush device has bristles 301, so that the bristles can effectively clean the impurities in the rock formation holes formed in the rock formation 103;

[0038] The casing 202 is arranged in the soil hole 104, and the top is connected with a sealing cover 404, so as to ensure that the upper part of the drill pipe 201 is sealedly connected with the drainage joint 401 and the water injection joint 402, so as to realize the injection and discharge of turbid water and improve the turbid water replacement effect;

[0039] The drill rod 201 is hollow inside, and the hollow connector 501 connected at the bottom is provided with a bottom drain port 506, which facilitates the smooth entry of turbid water in the hole in the survey borehole, thereby improving the cleaning efficiency and construction quality, and realizing efficient cleaning and turbid water replacement.

[0040] In this embodiment, the upper part of the rock formation hole has an upwardly arranged annular step 203, and the annular step 203 is located below the soil formation hole 104. The bottom of the casing 202 is embedded in the rock formation hole and abuts against the annular step 203 from top to bottom. The annular step 203 provides a stable support for the casing 202, thereby improving the stability of the casing 202 and the rock formation hole.

[0041] In this embodiment, the drainage joint 401 is connected to a drainage hose 406. The drainage hose 406 is made of soft material, which is convenient for placing the drainage hose 406 at a designated position to effectively discharge turbid water in the survey borehole, maintain the fluidity of the turbid water in the hole, and provide a channel for turbid water replacement.

[0042] In this embodiment, the drainage hose 406 is connected to the water pump 405. The water pump 405 is powered by its own lithium battery. By replacing the battery, it can protect continuous operation, effectively improve the efficiency of discharging turbid water, and save replacement time.

[0043] In this embodiment, the wall brush includes an elastic sleeve 302, which is fixedly mounted on the drill rod 201. The bristles 301 are formed on the outer periphery of the elastic sleeve 302 and are arranged around the circumference of the elastic sleeve 302. Under the action of the elastic sleeve 302 and the bristles 301, impurities in the rock formation holes are effectively removed.

[0044] In this embodiment, a gland 403 is provided on the sealing cover 404, and the drill rod 201 passes through the gland 403. There is an annular gap between the gland 403 and the outer periphery of the drill rod 201. The gland 403 seals the annular gap by rotating and adjusting to put the exploration borehole in a high-pressure sealing state; the gland 403 can maintain a high-pressure environment in the hole of the exploration borehole by rotating and tightening according to the needs of the exploration borehole cleaning progress, and can also maintain a normal pressure environment in the hole of the exploration borehole by rotating and loosening.

[0045] In this embodiment, the drill rod 201 passes through the middle of the sealing cover 404, and the drainage joint 401 is arranged coaxially with the drill rod 201; the water injection joint 402 is arranged in an inclined state and is skewed with the drainage joint 401. By optimizing the spatial layout, efficient injection and discharge of turbid water is ensured, while reducing interference between structures.

[0046] In this embodiment, the lower portion of the sealing cover 404 is embedded in the top of the sleeve 202 and is threadedly connected to the sleeve 202. In this way, the threaded connection enhances the sealing performance and also enhances the stability under high pressure.

[0047] In this embodiment, along the direction from top to bottom of the connector 501, the upper part of the connector 501 expands outward to form an expansion stage 502 arranged obliquely upward, and the expansion stage 502 is arranged around the circumference of the connector 501; a plurality of different-direction holes 503 are provided on the expansion stage 502, and the plurality of different-direction holes 503 are arranged around the circumference of the connector 501 at intervals, and the different-direction holes 503 are arranged obliquely in the same direction as the expansion stage 502, and are arranged obliquely in a different direction from the bottom drain port 506; the plurality of different-direction holes 503 are arranged around, which can effectively filter the sediment and impurities of the bottom drain port 506 and ensure that the drain port is not blocked;

[0048] The lower part of the connector 501 has a hollow straight section 504, the top of the straight section 504 is butted against the bottom of the flaring stage 502, the bottom of the straight section 504 forms the bottom drain port 506, and the flaring stage 502 and the straight section 504 enclose a hollow cavity; thus, the drainage capacity of the bottom drain port 506 is increased, and the drainage rate is improved;

[0049] The bottom of the flaring stage 502 has a bent transition portion 505 that is connected to the top of the straight tube section 504. The different-direction hole 503 is bent and passes through the bent transition portion 505. The upper portion of the different-direction hole 503 is formed on the flaring stage 502, and the lower portion of the different-direction hole 503 is formed on the straight tube section 504. Through the structure of the different-direction hole 503 and the hollow cavity, the water flow path is optimized and the efficiency of turbid water discharge is improved.

[0050] In this embodiment, the elastic sleeve 302 is provided with a plurality of hair implantation holes 304, which are arranged around the circumference of the elastic sleeve 302, and the hair implantation holes 304 penetrate the outer circumference of the elastic sleeve 302 to form an outer circumferential opening; the hair implantation holes 304 penetrate the outer circumference of the elastic sleeve 302 to increase the connection area, and provide a support basis for the subsequent elastic block 303;

[0051] The implanted hair hole 304 is filled with an elastic block 303, and the elastic coefficient of the elastic block 303 is greater than the elastic coefficient of the elastic sleeve 302; the inner section of the bristle 301 is embedded in the elastic block 303 and forms a whole with the elastic block 303, and the outer section of the bristle 301 passes through the peripheral opening and extends to the periphery of the elastic sleeve 302. There is an elastic interval between the outer end of the bristle 301 and the peripheral opening, so that the brushing area of ​​the rock formation hole by the bristle 301 is increased;

[0052] The peripheral openings are arranged in strips, and the peripheral openings of adjacent hair-planting holes 304 are arranged vertically; the hair-planting holes 304 are spherical, the elastic block 303 is spherical, and the periphery of the elastic block 303 is integrated with the elastic sleeve 302; the interior of the elastic block 303 is hollow, with a spherical cavity, and the inner section of the bristles 301 extends into the spherical cavity. In this way, under the structural action of the spherical hair-planting holes 304 and the spherical elastic block 303, the elasticity of the bristles 301 is enhanced, the brushing area of ​​the bristles 301 on the rock formation holes is increased, and the cleaning ability is improved. At the same time, the stable connection between the bristles 301 and the elastic sleeve 302 is strengthened to ensure durability and efficiency during the cleaning process.

[0053] 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. Construction structure for drilling rock hole cleaning and turbid water replacement, characterized in that: The drilling rod comprises a drilling rod, wherein the exploration borehole comprises a soil hole formed in the soil layer and a rock hole formed in the rock layer, wherein the soil hole is provided with a casing; a wall brush is sleeved on the drilling rod, and the outer periphery of the wall brush has bristles for brushing the rock hole; The top of the casing is connected with a sealing cover, the upper part of the drill pipe passes through the sealing cover to form an upper section, the upper section is connected with a drainage joint for draining turbid water in the exploration borehole, and the sealing cover is provided with a water injection joint for injecting clean water into the exploration borehole; The interior of the drill rod is hollow and has an inner hole for draining turbid water in the exploration borehole. The bottom of the drill rod is connected to a hollow connector, which has a hollow cavity. The bottom of the connector forms a bottom drain port for draining turbid water in the exploration borehole.

2. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 1, characterized in that: The upper part of the rock formation hole is provided with an upwardly arranged annular step, and the annular step is located below the soil formation hole. The bottom of the casing is embedded in the rock formation hole and abuts against the annular step from top to bottom.

3. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 2, characterized in that: The drainage joint is connected with a drainage hose.

4. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 3, characterized in that: The drainage hose is connected with a water pump.

5. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 4, characterized in that: The wall brush comprises an elastic sleeve, which is fixedly mounted on the drill rod. The bristles are formed on the outer periphery of the elastic sleeve and are arranged around the circumference of the elastic sleeve.

6. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 5, characterized in that: The sealing cover is provided with a gland, the drill rod passes through the gland, and an annular gap is formed between the gland and the outer periphery of the drill rod. The gland seals the annular gap by rotating and adjusting, so that the exploration borehole is in a high-pressure sealing state.

7. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 6, characterized in that: The drill rod passes through the middle part of the sealing cover, and the drainage joint is coaxially arranged with the drill rod; the water injection joint is arranged in an inclined shape and is skewed with the drainage joint.

8. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 7, characterized in that: The lower part of the sealing cover is embedded in the top of the sleeve and is threadedly connected with the sleeve.

9. The construction structure for cleaning and replacing turbid water in drilling holes according to any one of claims 1 to 8, characterized in that: Along the direction from top to bottom of the connector, the upper part of the connector expands outward to form an expansion stage arranged obliquely upward, and the expansion stage is arranged around the circumference of the connector; a plurality of different-direction holes are arranged on the expansion stage, and the different-direction holes are arranged around the circumference of the connector at intervals, and the different-direction holes are arranged obliquely in the same direction as the expansion stage, and are arranged obliquely in a different direction from the bottom drain port; The lower part of the connector has a hollow straight section, the top of the straight section is butted against the bottom of the flaring stage, the bottom of the straight section forms the bottom drain port, and the flaring stage and the straight section enclose to form the hollow cavity; The bottom of the flaring stage has a bending transition portion that is connected to the top of the straight tube section. The different-direction hole is bent and passes through the bending transition portion. The upper part of the different-direction hole is formed in the flaring stage, and the lower part of the different-direction hole is formed in the straight tube section.

10. The construction structure for cleaning and replacing turbid water in drilling holes as claimed in claim 5, characterized in that: The elastic sleeve is provided with a plurality of hair-planting holes, which are arranged around the circumference of the elastic sleeve and penetrate the outer circumference of the elastic sleeve to form an outer circumferential opening; The hair implanting hole is filled with an elastic block, the elastic coefficient of the elastic block is greater than the elastic coefficient of the elastic sleeve; the inner section of the bristles is embedded in the elastic block and forms an integral body with the elastic block, the outer section of the bristles passes through the peripheral opening and extends to the periphery of the elastic sleeve, and there is an elastic gap between the outer end of the bristles and the peripheral opening; The peripheral openings are arranged in strips, and the peripheral openings of adjacent hair-planting holes are arranged vertically; the hair-planting holes are spherical, the elastic block is spherical, and the periphery of the elastic block is integrated with the elastic sleeve; the interior of the elastic block is hollow and has a spherical cavity, and the inner section of the bristles extends into the spherical cavity.

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