CN212508056U - Ground creeps into device, follows tubular pile along with boring - Google Patents
Ground creeps into device, follows tubular pile along with boring Download PDFInfo
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- CN212508056U CN212508056U CN202022051784.4U CN202022051784U CN212508056U CN 212508056 U CN212508056 U CN 212508056U CN 202022051784 U CN202022051784 U CN 202022051784U CN 212508056 U CN212508056 U CN 212508056U
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Abstract
The utility model discloses a rock drilling device, which comprises a following tubular pile with a drilling section, wherein a tubular cavity of the drilling section of the following tubular pile is used for storing liquid; still including setting up the hammering body in following tubular pile's lumen along with drilling, hammering body has and moves to the removal route of the end of drilling section. The drilling section of the following tubular pile can store liquid while drilling, the hammering body moves to the tail end of the drilling section along a moving path to form two impact forces, the two impact forces comprise force of directly hammering rock soil by the hammering body and local hydraulic force caused by steep rise of water pressure due to falling of the hammering body, the impact force of the hammering body and the local hydraulic force impact the surrounding weak rock stratum, the rock stratum with higher strength and more complete rock stratum is left, and the harder rock soil is drilled. And at the moment, underwater concrete pouring is carried out, the concrete is bonded with harder rock soil, and the pipe pile foundation can bear larger vertical load while drilling.
Description
Technical Field
The utility model relates to a pile foundation engineering technical field, concretely relates to follow drilling with boring tub stake construction technical field.
Background
In the pile foundation engineering, a drill bit is adopted to drill and dig rock soil, a follow-drilling pipe pile is sleeved outside the drill bit, the follow-drilling pipe pile sinks the prestressed high-strength concrete pipe pile to the bottom of a hole while drilling a hole, the pile end can be subjected to rotary spraying grouting or concrete pouring to form a closed pile, and cement mortar or cement mortar can be poured outside the pipe wall to improve the bearing capacity of the pile. The portion of the heel tube pile while drilling near the drilling direction and near the drill bit is generally referred to as the drilling section. However, for the follow-drilling tubular pile, when the pile end bearing layer is extremely soft rock and soft rock (the compressive strength frk of the rock and soil is less than or equal to 15MPa), the construction quality and efficiency can be basically ensured; however, for harder rock and harder rock (rock compressive strength frk > 30MPa), the rock is difficult to be ground by the drill bit due to high rock stratum strength, and the construction efficiency is greatly reduced after the rock is drilled. Therefore, limited by the factor, the pile end bearing stratum of the current pipe-following pile while drilling is generally soft rock. At this time, in order to improve the vertical bearing capacity of the single pile, after the construction reaches the designed elevation of the bearing layer, the vibration exciter is adopted to vibrate and press down the constructed tubular pile so as to compact the bottom sediment of the pile and improve the bearing capacity of the pile end. However, the pile body structure of the pipe pile is easy to crack by vibration, so that the construction quality of the pile body is unqualified. In addition, the tubular pile structure has excellent vertical static pressure load resisting capacity, when the pile end bearing layer is soft rock, the end resistance and the settlement control capacity provided by rock-soil bodies are limited, the bearing potential of the pile body cannot be fully exerted, and the further improvement of the vertical bearing capacity of the pile type is restricted.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a ground creeps into device to improve the ability of creeping into harder ground.
In order to achieve the purpose, the utility model discloses realize according to following technical scheme:
a rock-soil drilling device comprises a heel-while-drilling tubular pile with a drilling section, wherein a tubular cavity of the drilling section of the heel-while-drilling tubular pile is used for storing liquid; still including setting up the hammering body in following tubular pile's lumen along with drilling, hammering body has and moves to the removal route of the end of drilling section.
Preferably, at least one through hole is formed in the pipe wall of the drilling section of the heel-while-drilling pipe pile.
Preferably, the through-hole is provided on a side of a moving path of the hammer.
Preferably, the hammer body comprises an attachment post that tapers in a direction away from the drilling section.
Preferably, the hammering body further comprises a hammering head connected with the connecting column close to the drilling section, and the hammering head is gradually reduced along the direction far away from the connecting column.
Preferably, the hammer head is provided as a cone.
Preferably, a reinforcing structure is arranged on the drilling section of the heel-while-drilling tubular pile.
The utility model provides a follow tubular pile while drilling, is including having the section of drilling follow tubular pile while drilling, be equipped with at least one through hole on the pipe wall of the section of drilling with tubular pile while drilling.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the drilling section of the following tubular pile can store liquid while drilling, the hammering body moves to the tail end of the drilling section along a moving path to form two impact forces, the two impact forces comprise force of directly hammering rock soil by the hammering body and local hydraulic force caused by steep rise of water pressure due to falling of the hammering body, the impact force of the hammering body and the local hydraulic force impact the surrounding weak rock stratum, the rock stratum with higher strength and more complete rock stratum is left, and the harder rock soil is drilled. And at the moment, underwater concrete pouring is carried out, the concrete is bonded with harder rock soil, and the pipe pile foundation can bear larger vertical load while drilling.
2. The heel-while-drilling pipe pile provided with the through hole can be used for forming a flow loop of liquid from the tail end of the drilling section to the outer side of the through hole and then to the inner side of the through hole, so that the heel-while-drilling pipe pile can be used for scouring rock soil.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic diagram illustrating drilling through a drill pipe and a heel-pipe pile while drilling in the prior art.
Fig. 2 is the mechanism schematic diagram of the rock-soil drilling device and the following pipe pile embodiment.
Wherein:
1-follow-while-drilling tubular pile, 11-drilling section, 12-through hole, 2-hammering body, 21-connecting column and 22-hammering head.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
A rock drilling device comprises a heel-while-drilling tubular pile 1 with a drilling section 11, wherein a tubular cavity of the drilling section 11 of the heel-while-drilling tubular pile 1 is used for storing liquid; the drilling tool further comprises a hammering body 2 arranged in a pipe cavity of the heel-while-drilling pipe pile 1, wherein the hammering body 2 is provided with a moving path moving to the tail end of the drilling section 11. The moving path of the hammer 2 is shown by the double arrow in the up-down direction in fig. 2.
At least one through hole 12 is arranged on the pipe wall of the drilling section 11 of the heel-while-drilling pipe pile 1. The hammering body 2 falls to cause liquid to flow and exert pressure to the ground, upwards flow along following the seam between tubular pile 1 and the ground body again, inside rethread through 12 inflow follow tubular pile 1 along with the drilling, form the backward flow and erode, liquid has the ability of erodeing the ground after forming the backward flow through 12 through the through hole, has further strengthened the ability that the ground drilling device bored the ground. The through-hole 12 is provided beside the moving path of the hammer body 2. The through hole 12 is arranged at the side of the moving path of the hammering body 2, and then local low pressure is formed at one side of the through hole 12 after the hammering body 2 falls down, so that the liquid backflow speed is increased, and the capability of flushing rock soil by liquid backflow is enhanced.
The hammer 2 comprises a connecting column 21, the connecting column 21 tapering in a direction away from the drilling section 11. The connecting column 21 is gradually reduced along the direction far away from the drilling section 11, so that the negative pressure formed on one side of the through hole 12 is continuously intensified when the hammering body 2 falls to the tail end close to the drilling section 11, the liquid backflow speed is further increased, and the capability of flushing rock soil by liquid is further enhanced. The hammer body 2 further comprises a hammer head 22 connected to the connecting column 21 near the drilling section 11, the hammer head 22 tapering in a direction away from the connecting column 21. The hammering head 22 is gradually reduced along the direction far away from the connecting column 21, so that the force of the hammering body 2 for directly hammering the rock and soil is more concentrated, and harder rock and soil layers can be more favorably broken. The hammer head 22 may be provided as a cone. The hammering head 22 is set as a cone, which can form holes similar to an inverted triangle cone in the rock-soil layer, if the surrounding rock stratum has poor properties, such as low strength and crack development, the side wall can also generate the effect of expanding diameter.
Example 2
According to the different embodiment, the drilling section 11 of the heel-while-drilling tubular pile 1 is provided with a reinforcing structure. The reinforcing structure comprises an additional reinforcing steel bar mesh, reinforcing steel bar encryption, an internal embedded steel pipe and the like. The kinetic energy of the hammering body 2 whereabouts in-process is bigger and bigger, consequently is closer to the end of drilling section more, and the possibility of hammering body 2 accident and follow the structure damage after tubular pile 1 contacts is bigger, sets up additional strengthening and can effectively avoid accidental collision because of the structure damage of following tubular pile 1 while drilling that rises.
Example 3
The utility model provides a follow-while-drilling tubular pile 1, is equipped with at least one through-hole 12 including having the section of boring 11 of following tubular pile 1's the pipe wall of the section of boring 11, can be used for forming liquid from the end of the section of boring 11 to the through-hole 12 outside then to the inboard flow circuit of through-hole 12 to can be used for scouring the ground.
Above, it is only the preferred embodiment of the present invention, but not to limit the present invention in any form, so that any modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention are all within the scope of the technical solution of the present invention.
Claims (8)
1. The rock drilling device is characterized by comprising a heel-while-drilling tubular pile with a drilling section, wherein a tubular cavity of the drilling section of the heel-while-drilling tubular pile is used for storing liquid; still including setting up the hammering body in following tubular pile's lumen along with drilling, hammering body has and moves to the removal route of the end of drilling section.
2. The earth boring device according to claim 1, wherein at least one through hole is provided on a wall of the drilling section of the heel-while-drilling pile.
3. The earth boring device according to claim 2, wherein the through-hole is provided at a side of a moving path of the hammer body.
4. The earth boring device of claim 3, wherein the hammer mass comprises an attachment post that tapers in a direction away from the drilling section.
5. The earth boring device of claim 4, wherein the ram further comprises a ram connected to the attachment post proximate the drilling section, the ram tapering in a direction away from the attachment post.
6. The earth boring device of claim 5, wherein the hammering head is provided as a cone.
7. The rock-soil drilling device according to claim 1, wherein a reinforcing structure is arranged on the drilling section of the heel-while-drilling pipe pile.
8. The utility model provides a follow tubular pile while drilling which characterized in that, is including having the section of driling with the tubular pile while drilling, be equipped with at least one through hole on the pipe wall of the section of driling with the tubular pile while drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022051784.4U CN212508056U (en) | 2020-09-17 | 2020-09-17 | Ground creeps into device, follows tubular pile along with boring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022051784.4U CN212508056U (en) | 2020-09-17 | 2020-09-17 | Ground creeps into device, follows tubular pile along with boring |
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| Publication Number | Publication Date |
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| CN212508056U true CN212508056U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022051784.4U Active CN212508056U (en) | 2020-09-17 | 2020-09-17 | Ground creeps into device, follows tubular pile along with boring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324322A (en) * | 2020-09-17 | 2021-02-05 | 广州市市政工程试验检测有限公司 | Rock-soil drilling device, follow-drilling pipe pile and rock-soil drilling method |
-
2020
- 2020-09-17 CN CN202022051784.4U patent/CN212508056U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324322A (en) * | 2020-09-17 | 2021-02-05 | 广州市市政工程试验检测有限公司 | Rock-soil drilling device, follow-drilling pipe pile and rock-soil drilling method |
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