An auxiliary device for forming a hole in a slightly weathered granite layer and a hole forming method

Abstract

The application discloses a kind of micro-weathered granite layer pore-forming auxiliary device and pore-forming method, and one kind of micro-weathered granite layer pore-forming auxiliary device includes pile driver and is arranged on the rock layer corrosor of pile driver, the rock layer corrosor is vertically moved under the driving of pile driver;The rock layer corrosor includes: box body, upper end is open, and detachable sealing fixed installation has box cover, the bottom of the box body is provided with a plurality of installation holes two, the box cover is connected with pile driver;Drill cylinder is vertically arranged, the number is equal to the number of installation hole two, the drill cylinder includes cylinder body and the taper pipe head of fixed installation in the lower end of cylinder body, the cylinder body and taper pipe head are coaxial.Have beneficial effect: the micro-weathered granite layer pore-forming auxiliary device of the application can inject strong alkali solution into micro-weathered granite layer and corrode micro-weathered granite, so that micro-weathered granite is loose, easy to drill, greatly improve drilling efficiency, shorten pore-forming time, reduce drill bit wear, reduce pore-forming cost.

Description

Technical Field

[0001] This invention relates to the field of building engineering, and in particular to an auxiliary device and method for drilling holes in slightly weathered granite layers. Background Technology

[0002] Generally speaking, based on the degree of weathering, the weathering crust profile of granite can be divided into three layers from top to bottom: fully weathered, semi-weathered, and slightly weathered. The slightly weathered layer is located at the bottom of the weathering profile, below which is the fresh rock. As the name suggests, slightly weathered means that the rock has only undergone weak weathering. It is a weathering product mainly caused by one of the climatic factors—solar thermal radiation and thermal amplitude.

[0003] Although slightly weathered granite has weathered, its rock mass is still very intact, and its rock quality is still as hard as fresh rock. This makes drilling holes in slightly weathered granite layers time-consuming, results in high wear of alloy drill bits, high drilling costs, and low drilling efficiency. Summary of the Invention

[0004] The main objective of this invention is to propose an auxiliary device and method for drilling holes in slightly weathered granite layers, aiming to solve the problems of long drilling time, low efficiency, and high drill bit wear in current drilling methods for slightly weathered granite layers.

[0005] To address the aforementioned problems, this invention proposes an auxiliary device for drilling holes in slightly weathered granite layers, comprising a pile driver and a rock erosion device mounted on the pile driver, wherein the rock erosion device moves vertically under the drive of the pile driver.

[0006] The rock strata corroder includes:

[0007] The box body has an open top and a detachable, sealed lid. The bottom of the box body has several mounting holes. The lid is connected to the piling machine.

[0008] The drill barrel is vertically arranged, and the number of the drill barrels is equal to the number of mounting holes 2. The drill barrel includes a barrel body and a tapered tube head fixedly installed at the lower end of the barrel body. The barrel body and the tapered tube head are coaxial. The upper end of the barrel body is sealed and fixedly extends into the box body through the mounting hole 2. The tapered tube head is provided with a spray hole 2.

[0009] In one embodiment, the piling machine is provided with an installation block, which moves vertically under the drive of the piling machine. The lower surface of the installation block is provided with an installation hole, and the box body is embedded in the installation hole.

[0010] In one embodiment, the box body is provided with a plurality of partitions, the upper end of the partitions is in contact with the box lid, and the lower end of the partitions is provided with through holes.

[0011] In one embodiment, the box is connected to an infusion tube capable of delivering a strong alkaline solution.

[0012] In one embodiment, a sealing cylinder is tightly fitted onto the cylinder body, and the outer wall of the sealing cylinder is adhered to the wall of the mounting hole.

[0013] In one embodiment, the upper end of the cylinder is a conical cylinder, and the lower end of the conical cylinder has a larger diameter than the upper end.

[0014] In one embodiment, the cylinder includes an outer cylinder and an inner cylinder located inside the outer cylinder and coaxial with the outer cylinder. The outer wall of the inner cylinder is in close contact with the inner wall of the outer cylinder. The inner cylinder can rotate inside the outer cylinder. The lower end of the outer cylinder is detachably and coaxially fixedly connected to the tapered tube head. The upper end of the inner cylinder extends out of the outer cylinder.

[0015] The outer and inner cylinders are evenly distributed with multiple spray holes 1 on their circumference. The inner cylinder rotates within the outer cylinder, which allows the spray holes 1 on the outer cylinder to connect with the spray holes 1 on the inner cylinder.

[0016] In one embodiment, the upper end of the outer cylinder extends into the box body through the second mounting hole, and a nut is coaxially fitted onto the upper end of the outer cylinder, the outer diameter of which is larger than the diameter of the second mounting hole.

[0017] Furthermore, this invention also proposes a method for drilling holes in slightly weathered granite layers, comprising:

[0018] The slightly weathered granite layer is loosened by using any of the aforementioned auxiliary devices for drilling holes;

[0019] Drilling is carried out using a rotary drilling rig in a loose, slightly weathered granite layer.

[0020] In one embodiment, the auxiliary device for drilling holes in the slightly weathered granite layer using any of the foregoing methods to loosen the slightly weathered granite layer includes:

[0021] Inject a strong alkaline solution into the box;

[0022] The drilling machine is used to lower the drill barrel and insert it into the slightly weathered granite layer. The strong alkaline solution flows out from nozzle two and nozzle one and reacts with the slightly weathered granite to corrode the layer, making it loose.

[0023] Beneficial effects: The auxiliary device for drilling holes in slightly weathered granite layers of this application can inject strong alkaline solution into the slightly weathered granite layer to corrode the slightly weathered granite, making the slightly weathered granite loose and easy to drill, greatly improving drilling efficiency, shortening hole-forming time, reducing drill bit wear, and reducing hole-forming costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an auxiliary device for drilling holes in a slightly weathered granite layer according to the present invention;

[0026] Figure 2 This is a top view of the rock erosion device of the present invention;

[0027] Figure 3 yes Figure 2 A diagram showing the box after the lid has been removed;

[0028] Figure 4 yes Figure 2 AA section view in the image.

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. Piling machine; 11. Mounting block; 12. Mounting hole one;

[0031] 2. Rock strata erosion device; 20. Nut; 21. Box body; 22. Box cover; 23. Partition plate; 24. Through hole; 25. Mounting hole two; 26. Sealing cylinder; 27. Outer cylinder; 28. Inner cylinder; 29. ​​Conical tube head;

[0032] 3. Nozzle 1; 4. Nozzle 2; 5. Infusion tube. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] This invention proposes an auxiliary device for drilling holes in slightly weathered granite layers. This device can inject a strong alkaline solution into the slightly weathered granite layer to corrode the granite, making the granite loose and easy to drill, thus greatly improving drilling efficiency, shortening the hole-forming time, reducing drill bit wear, and lowering the hole-forming cost.

[0038] Specifically, in one embodiment of the invention, such as Figure 1 As shown, the auxiliary device for drilling holes in the slightly weathered granite layer includes a pile driver 1 and a rock eroder 2 mounted on the pile driver 1. The rock eroder 2 moves vertically under the drive of the pile driver 1 and inserts into the slightly weathered granite layer to corrode it, making the slightly weathered granite layer loose and easy to drill, thereby greatly improving drilling efficiency, shortening the hole-forming time, reducing drill bit wear, and reducing hole-forming costs.

[0039] Specifically, such as Figures 2-4 As shown, the rock erosion device 2 includes a box body 21 and a drill barrel. The upper end of the box body 21 is open and a box cover 22 is detachably and sealed. An infusion tube 5 is provided on the box body 21, and a strong alkaline solution is injected into the box body 21 through the infusion tube 5.

[0040] In this embodiment, as Figure 3 and Figure 4 As shown, the bottom of the box body 21 is provided with a plurality of mounting holes 25, such as... Figure 1 As shown, the piling machine 1 is provided with an installation block 11. The installation block 11 moves vertically under the drive of the piling machine 1. The lower surface of the installation block 11 is provided with an installation hole 12. The box body 21 is embedded in the installation hole 12. This design facilitates the disassembly and separation of the piling machine 1 and the rock strata corroder 2.

[0041] In this embodiment, as Figure 3 and Figure 4 As shown, the drill barrels are vertically arranged, and their number is equal to the number of mounting holes 25. One drill barrel is installed through one mounting hole 25. Further, the drill barrel includes a barrel body and a tapered tube head 29 fixedly installed at the lower end of the barrel body. The barrel body and the tapered tube head 29 are coaxial. The upper end of the barrel body is sealed and fixedly extends into the box body 21 through the mounting hole 25. The tapered tube head 29 is provided with a spray hole 2 4. The strong alkaline solution in the box body 21 flows into the tapered tube head 29 through the barrel body and finally flows out from the spray hole 2 4 to corrode the slightly weathered granite, making the slightly weathered granite loose and easy to drill, greatly improving drilling efficiency, shortening hole-forming time, reducing drill bit wear, and reducing hole-forming cost.

[0042] In this embodiment, the pile driver 1 presses down on the housing 21, which in turn presses down on the drill cylinder, causing the drill cylinder to insert into the slightly weathered granite layer. To improve the strength of the housing 21, as follows: Figure 3 and Figure 4 As shown, multiple partitions 23 are fixedly installed inside the box body 21. The upper end of the partition 23 contacts the box cover 22, and the lower end of the partition 23 is provided with a through hole 24 to facilitate the free flow of strong alkaline solution inside the box body 21.

[0043] In this embodiment, furthermore, to enhance the sealing performance of the connection between the cylinder and mounting hole 25, such as... Figure 4 As shown, a rubber sealing cylinder 26 is tightly fitted onto the cylinder body. The outer wall of the sealing cylinder 26 is adhered to the wall of the second mounting hole 25. Meanwhile, the upper end of the cylinder body is a conical cylinder, and the lower end diameter of the conical cylinder is larger than the upper end diameter. With this design, as the pile driver 1 presses down on the box body 21, the connection and seal between the cylinder body and the second mounting hole 25 becomes increasingly secure as the drill cylinder is inserted into the slightly weathered granite layer. The connection between the cylinder body and the second mounting hole 25 is less prone to leakage. The box body 21 can reliably press the drill cylinder down to insert it into the slightly weathered granite layer, and the seal between the cylinder body and the second mounting hole 25 becomes increasingly better.

[0044] Furthermore, the upper end of the cylinder extends through the second mounting hole 25 into the box 21. A nut 20 is coaxially fitted onto the upper end of the cylinder. The outer diameter of the nut 20 is larger than the diameter of the second mounting hole 25. This design allows the pile driver 1 to smoothly drive the drill cylinder to move vertically upward and extend it from underground. During the process of the pile driver 1 driving the box 21 to move vertically upward, the upper end of the cylinder will separate from the second mounting hole 25 due to the conical design of the upper end of the cylinder. However, the presence of the nut 20 can prevent the cylinder from leaving the second mounting hole 25. In this way, the upward movement of the box 21 is driven by the nut 20 to smoothly extend the drill cylinder out of the ground.

[0045] Furthermore, such as Figure 3 and Figure 4 As shown, the cylinder includes an outer cylinder 27 and an inner cylinder 28 located inside the outer cylinder 27 and coaxial with it. The outer wall of the inner cylinder 28 is tightly attached to the inner wall of the outer cylinder 27. The inner cylinder 28 can rotate within the outer cylinder 27. The upper ends of both the outer cylinder 27 and the inner cylinder 28 are conical. The lower end of the outer cylinder 27 is detachably and coaxially fixedly connected to a conical tube head 29. This design facilitates the assembly and disassembly of the inner cylinder 28. The upper end of the inner cylinder 28 extends out of the outer cylinder 27. This design facilitates the rotation of the inner cylinder 28 relative to the outer cylinder 27. Multiple spray holes are evenly distributed around the circumference of both the outer cylinder 27 and the inner cylinder 28. 1.3 The inner cylinder 28 rotates within the outer cylinder 27, allowing the spray holes 1.3 on the outer cylinder 27 and 1.3 on the inner cylinder 28 to connect. This allows the strong alkaline solution in the inner cylinder 28 to flow out from both the second spray hole 4 and the first spray hole 3, expanding the corrosion surface, accelerating the corrosion rate, further shortening the hole-forming time, improving the hole-forming efficiency, and reducing the hole-forming cost. The upper end of the outer cylinder 27 extends into the box 21 through the second mounting hole 25. A nut 20 is coaxially and tightly fitted onto the upper end of the outer cylinder 27. The outer diameter of the nut 20 is larger than the diameter of the second mounting hole 25. The sealing cylinder 26 is tightly fitted onto the outer cylinder 27.

[0046] In this embodiment, the nut 20, box 21, drill barrel, box cover 22, partition 23, sealing cylinder 26, outer cylinder 27, inner cylinder 28, conical tube head 29, and infusion tube 5 are all made of materials resistant to strong alkali corrosion, such as high-speed steel and corrosion-resistant rubber. The strong alkali solution can be sodium hydroxide solution or potassium hydroxide solution.

[0047] Furthermore, this invention also proposes a method for drilling holes in slightly weathered granite layers, comprising:

[0048] The slightly weathered granite layer is loosened by using any of the aforementioned auxiliary devices for drilling holes;

[0049] Rotary drilling rigs are used to drill holes in loose, slightly weathered granite layers. Because the slightly weathered granite layer is loosened by using a hole-forming auxiliary device before drilling, drilling is easier, faster, more efficient, with less drill bit wear and lower drilling costs.

[0050] In this embodiment, the auxiliary device for drilling holes in the slightly weathered granite layer using any of the foregoing methods to loosen the slightly weathered granite layer includes:

[0051] Inject a strong alkaline solution into box 21;

[0052] The pile driver 1 lowers the casing 21 to drive the drill barrel down and insert it into the slightly weathered granite layer. A strong alkaline solution flows out from nozzle 4 and nozzle 3 to react with and corrode the slightly weathered granite layer, making it loose. After a period of time, the slightly weathered granite layer is loosened. The pile driver 1 is then controlled to drive the drill barrel up and out of the ground. After that, the rotary drilling rig can be controlled to drill holes in the loose slightly weathered granite layer. The loose slightly weathered granite layer is easy to drill, which greatly improves drilling efficiency, shortens hole formation time, reduces drill bit wear, and reduces hole formation cost.

[0053] In this embodiment, the amount of strong alkaline solution added to the box 21 and the reaction time of the strong alkaline solution flowing out from nozzle 4 and nozzle 3 with the slightly weathered granite can be determined according to the size and depth of the hole to be drilled. As long as the slightly weathered granite layer within the size range of the hole can be corroded, the strong alkaline solution can be saved to the maximum extent, the corrosion efficiency can be improved, and the cost can be reduced.

[0054] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An auxiliary device for forming a hole in a slightly weathered granite layer, characterized by, It includes a pile driver and a rock erosion device mounted on the pile driver, the rock erosion device moving vertically under the drive of the pile driver; The rock strata corroder includes: The box body has an open top and a detachable, sealed lid. The bottom of the box body has several mounting holes. The lid is connected to the piling machine. The drill barrel is vertically arranged, and the number of the drill barrels is equal to the number of mounting holes 2. The drill barrel includes a barrel body and a tapered tube head fixedly installed at the lower end of the barrel body. The barrel body and the tapered tube head are coaxial. The upper end of the barrel body is sealed and fixedly extends into the box body through the mounting hole 2. The tapered tube head is provided with a spray hole 2.

2. An auxiliary device for making holes in a micro-weathered granite layer according to claim 1, characterized in that, The piling machine is equipped with an installation block, which moves vertically under the drive of the piling machine. The lower surface of the installation block is provided with an installation hole, and the box is embedded in the installation hole.

3. An auxiliary device for forming a hole in a micro-weathered granite layer according to claim 1, characterized in that, The box contains multiple partitions, the upper end of which contacts the box lid, and the lower end of which has a through hole.

4. A micro-weathered granite layer hole-forming auxiliary device according to claim 1, characterized in that, The box is connected to an infusion tube, which is capable of delivering a strong alkaline solution.

5. A micro-weathered granite layer hole-forming auxiliary device according to claim 1, characterized in that, A sealing cylinder is tightly fitted onto the cylinder body, and the outer wall of the sealing cylinder is adhered to the wall of the second mounting hole.

6. An apparatus for assisting the formation of a hole in a micro-weathered granite layer as claimed in claim 1, characterized in that, The upper end of the cylinder is a conical cylinder, and the lower end of the conical cylinder has a larger diameter than the upper end.

7. A micro-weathered granite layer hole-forming auxiliary device according to claim 6, characterized in that, The cylinder includes an outer cylinder and an inner cylinder located inside the outer cylinder and coaxial with the outer cylinder. The outer wall of the inner cylinder is in close contact with the inner wall of the outer cylinder. The inner cylinder can rotate inside the outer cylinder. The lower end of the outer cylinder is detachably and coaxially fixedly connected to the tapered tube head. The upper end of the inner cylinder extends out of the outer cylinder. The outer and inner cylinders are evenly distributed with multiple spray holes 1 on their circumference. The inner cylinder rotates within the outer cylinder, which allows the spray holes 1 on the outer cylinder to connect with the spray holes 1 on the inner cylinder.

8. A micro-weathered granite layer hole-forming auxiliary device according to claim 7, characterized in that, The upper end of the outer cylinder extends into the box body through the second mounting hole, and a nut is tightly fitted coaxially at the upper end of the outer cylinder. The outer diameter of the nut is larger than the diameter of the second mounting hole.

9. A method of forming a bore in a micro-weathered granite formation, the method comprising: include: The slightly weathered granite layer is loosened by using the auxiliary device for drilling holes in the slightly weathered granite layer according to any one of claims 1-8; Drilling is carried out using a rotary drilling rig in a loose, slightly weathered granite layer.

10. A method of forming a bore in a micro-weathered granite layer as claimed in claim 9, characterised in that, The auxiliary device for drilling holes in slightly weathered granite layers according to any one of claims 7-8, which loosens the slightly weathered granite layer, includes: Inject a strong alkaline solution into the box; The drilling machine is used to lower the drill barrel and insert it into the slightly weathered granite layer. The strong alkaline solution flows out from nozzle two and nozzle one and reacts with the slightly weathered granite to corrode the layer, making it loose.

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