CN109162302B

CN109162302B - Method for dredging acoustic pipe by using slurry replacement

Info

Publication number: CN109162302B
Application number: CN201810803339.3A
Authority: CN
Inventors: 姚逢节
Original assignee: China MCC20 Group Corp Ltd
Current assignee: China MCC20 Group Corp Ltd
Priority date: 2018-07-20
Filing date: 2018-07-20
Publication date: 2021-03-26
Anticipated expiration: 2038-07-20
Also published as: CN109162302A

Abstract

The invention provides a method for dredging a sounding pipe by using slurry replacement, which comprises the following steps: A. putting the acoustic pipe dredging device into the acoustic pipe to be dredged until the acoustic pipe cannot be continuously put down, wherein the acoustic pipe dredging device comprises a replacement pipe and a contact connected with the lower end of the replacement pipe, and the contact is provided with a replacement outlet communicated with the replacement pipe; B. injecting slurry into the replacement pipe, so that the slurry impacts the belt to dredge the blockage in the acoustic pipe, and part of the slurry is discharged out of the acoustic pipe along with the blockage; C. after the slurry pump is started for a period of time, the sounding pipe dredging device is continuously put down; D. repeating the step B, C until the sounding pipe to be dredged is dredged completely; E. clean water is injected into the replacement pipe, and the dredged mud in the acoustic testing pipe is replaced; F. and taking out the sounding pipe dredging device. The acoustic pipe dredging device adopts a mud replacement pipe dredging method to dredge the blocked pipe, shortens the construction period and saves the cost, and the method is simple to operate and high in pipe dredging efficiency.

Description

Method for dredging acoustic pipe by using slurry replacement

Technical Field

The invention relates to the field of cast-in-place piles, in particular to a method for dredging a sounding pipe by using slurry replacement.

Background

The application of the pile foundation in the modern engineering construction is more and more extensive, the requirements of high-rise construction or bridge construction on the pile are higher and higher, the single pile bearing capacity of the cast-in-situ bored pile is high, and the construction technology is mature and is the choice of a plurality of projects. The quality of the bored pile is generally detected by adopting a sound wave projection detection method, and the connection of the sounding pipe is generally realized by adopting threading connection or welding, so that the tightness of a joint cannot be ensured no matter the threading connection or the welding is adopted, and slurry is easily caused to enter the sounding pipe. The top end of the sounding pipe is generally higher than the ground so as to be convenient for detection after pile forming, however, the sounding pipe is difficult to be effectively protected during pile group construction, heavy mechanical equipment such as a pile driver, an excavator, an earth moving vehicle and the like damage and serious the end part of the sounding pipe, and impurities such as mud, silt and the like flow into the pipe so that later-stage sound wave projection detection cannot be carried out. In order to solve the problem, a high-pressure water pipe is generally adopted to rapidly extrude silt and sand in the acoustic measurement pipe by using high-pressure water, but the silt and sand accumulated in the acoustic measurement pipe of the ultra-deep and ultra-long pile are more and more densely flushed by the high-pressure water with larger bottom gravel and sand accumulated along with the increase of the depth, and the high-pressure water cannot replace the gravel and sand in the pipe after the density of the gravel and the high-pressure water reach dynamic balance.

When acoustic detection blockage cannot be detected, a core-pulling method is generally adopted for detection. However, the core pulling price is high, the occupied time is long, and particularly, the manpower, material resources and financial resources consumed by the ultra-deep and ultra-long pile are too high.

Disclosure of Invention

In order to overcome the problems, the invention provides a method for dredging the sounding pipe by using slurry replacement, which can dredge the sounding pipe.

In order to achieve the advantages, the invention provides a method for dredging a sounding pipe by using slurry replacement, which comprises the following steps:

A. putting a sound pipe dredging device into the sound pipe to be dredged until the sound pipe cannot be continuously put down, wherein the sound pipe dredging device comprises a replacement pipe and a contact connected with the lower end of the replacement pipe, and the contact is provided with a replacement outlet communicated with the replacement pipe;

B. injecting slurry into the replacement pipe, so that the slurry impacts the belt to dredge the blockage in the acoustic pipe, and part of the slurry is discharged out of the acoustic pipe along with the blockage;

C. after the slurry pump is started for a period of time, the sounding pipe dredging device is continuously put down;

D. repeating the step B, C until the sounding pipe to be dredged is dredged completely;

E. clean water is injected into the replacement pipe, and the dredged mud in the acoustic testing pipe is replaced;

F. and taking out the sounding pipe dredging device.

In one embodiment of the invention, the contact is a conical structure with a decreasing downward cross section, and the slurry outlet is located at the lower end of the contact.

In one embodiment of the invention, the contact is further provided with a power outlet, the power outlet is connected with a power pipe, and the power outlet drives the contact to move downwards when the slurry is sprayed out.

In one embodiment of the invention, the motive exit opening is upwardly facing.

In one embodiment of the invention, the power outlet is positioned at the edge of the upper surface of the contact, the contact is rotationally connected with the replacement pipe and the power pipe, the outlet of the power slurry ring is oriented to form an included angle with the axis of the contact, and the power outlet drives the contact to rotate when slurry is sprayed out.

In an embodiment of the present invention, the power pipe is sleeved outside the replacement pipe.

In one embodiment of the invention, the displacement tube is sleeved outside the power tube.

In an embodiment of the present invention, the step B further includes injecting slurry into the power pipe to press down the contact to loosen the plug.

In one embodiment of the invention, the outer surface of the contact is provided with a spiral protrusion or pattern.

In an embodiment of the present invention, the step B further includes injecting slurry into the power pipe, so that the contact head is pressed down and rotates to loosen the blockage.

In the invention, the sound-detecting pipe dredging device adopts a mud replacement pipe dredging method to dredge the blocked pipe, shortens the construction period and saves the cost, and the method has simple operation and high pipe dredging efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a sounding pipe dredging device according to a first embodiment of the present invention.

Fig. 2 is a sectional schematic view of a contact of the sound pipe dredging device in fig. 1.

Fig. 3 is a schematic structural diagram of a contact of the sound tube dredging device in fig. 1.

Fig. 4 is a schematic structural diagram of a contact of the sound tube dredging device in fig. 1.

Fig. 5 is a schematic structural diagram of a contact of a device for dredging a sound pipe according to a third embodiment of the invention.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be provided with reference to the accompanying drawings and preferred embodiments for describing specific embodiments, structures, features and effects thereof.

Referring to fig. 1, a method for dredging an acoustic pipe by using mud replacement according to a first embodiment of the present invention includes:

A. putting the dredging sounding pipe device 1 into the sounding pipe 2 to be dredged until the dredging sounding pipe device cannot be continuously put down, wherein the dredging sounding pipe device 1 comprises a replacement pipe 11 and a contact 12 connected with the lower end of the replacement pipe 11, and the contact 12 is provided with a replacement outlet 121 communicated with the replacement pipe 11;

B. injecting slurry 3 into the replacement pipe 11, so that the slurry 3 impacts the plug 4 in the sounding pipe 2 to be dredged, and discharging part of the slurry 3 carrying the plug 4 out of the sounding pipe 2 to be dredged;

C. after the slurry pump is started for a period of time, the sound measuring pipe dredging device 1 is continuously put down;

D. repeating the step B, C until the sounding pipe 2 to be dredged is completely dredged;

E. clean water is injected into the replacement pipe 11, and the mud 3 in the dredged sounding pipe 2 to be dredged is replaced;

F. and taking out and dredging the sounding pipe device 1.

Referring to fig. 2, the contact 12 has a conical structure with a decreasing downward cross section, and the slurry outlet 31 is located at the lower end of the contact 12. The contact 12 is further provided with a power outlet 122, the power outlet 122 is connected with a power pipe 123, and the power pipe 123 is sleeved outside the replacement pipe 11. The power tube 123, which is partially inside the contact 12, is curved or trapezoidal. Step B also comprises the step of injecting slurry 3 into the power pipe 123 to enable the contact 12 to press down to loosen the plug 4.

Referring to fig. 3 and 4, the power outlet 122 drives the contact 12 to move downward when the slurry 3 is ejected. The motive exit 122 opens upward. The power outlet 122 is positioned at the edge of the upper surface of the contact 12, the contact 12 is rotatably connected with the displacement pipe 11 and the power pipe 123, the outlet of the power slurry 3 ring is oriented at an angle with the axis of the contact 12, and the power outlet 122 drives the contact 12 to rotate when the slurry 3 is sprayed out. Step B further includes injecting slurry 3 into the power pipe 123, and pressing down and rotating the contact 12 to loosen the plug 4.

In the second embodiment of the present invention, the replacement pipe 11 is sleeved outside the power pipe 123.

Referring to fig. 5, in a third embodiment of the present invention, the outer surface of the contact 12 is provided with a spiral protrusion or pattern. The screw direction of the contact 12 coincides with the rotational direction in which the contact 12 is driven to rotate when the power outlet 122 ejects the slurry 3.

In the invention, the dredging acoustic pipe device 1 adopts a mud replacement pipe-through method to dredge the blocked pipe, shortens the construction period and saves the cost, and the method has simple operation and high pipe-through efficiency.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method of dredging an acoustic pipe using mud replacement, comprising:

A. putting a dredging acoustic pipe device into the acoustic pipe to be dredged until the dredging acoustic pipe device cannot be continuously put down, wherein the dredging acoustic pipe device comprises a replacement pipe and a contact connected with the lower end of the replacement pipe, the contact is provided with a replacement outlet communicated with the replacement pipe, the contact is in a conical structure with the downward section gradually reduced, and a slurry outlet is positioned at the lower end of the contact;

B. injecting slurry into the displacement pipe to enable the slurry to impact a blocking object in the acoustic measurement pipe to be dredged, discharging part of the slurry carrying the blocking object out of the acoustic measurement pipe, wherein the contact is also provided with a power outlet, the opening of the power outlet is upward, the power outlet is connected with a power pipe, the power outlet is positioned on the edge of the upper surface of the contact, the contact is rotationally connected with the displacement pipe and the power pipe, the direction of the power outlet forms an included angle with the axis of the contact, and the outer surface of the contact is provided with spiral bulges or patterns; the power pipe is filled with slurry to enable the contact to press down to loosen the blockage, and the power outlet drives the contact to rotate and move downwards when the slurry is sprayed out;

F. and taking out the sounding pipe dredging device.

2. The method for dredging the sounding pipe by using mud replacement according to claim 1, wherein the power pipe is sleeved outside the replacement pipe.

3. The method of dredging a sonic pipe using mud replacement of claim 1 wherein the replacement pipe is sleeved outside the power pipe.

4. The method of dredging a sonic pipe using mud replacement as claimed in claim 1 wherein said step B further comprises injecting mud into the power pipe, pressing down the contact head and rotating to loosen the plug.