CN217897825U

CN217897825U - Take soil cement hole sealing drill way surrounding cylinder of concentration determination device

Info

Publication number: CN217897825U
Application number: CN202123456985.3U
Authority: CN
Inventors: 周惟; 马永贵; 宋晓波; 王斌; 杨晓; 王俊平
Original assignee: Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute
Current assignee: Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-11-25
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a take cement soil hole sealing drill way surrounding cylinder of concentration determination device, including the surrounding cylinder, its characterized in that: the enclosure is of an annular structure with an upper opening and a lower opening, the side wall of the top of the enclosure is concave, a platform is formed at the bottom of the concave part, and a through hole communicated with the space in the enclosure is formed in the top surface of the platform. The utility model discloses possess the thick liquid concentration that the control was overflowed at full in grout operation process, extract the beneficial effect of taking concentration decision maker of the automatic benefit thick liquid of in-process at the drilling rod.

Description

Take soil cement hole sealing drill way surrounding cylinder of concentration determination device

Technical Field

The utility model relates to a drilling shutoff field of geological drilling specifically is a take cement soil hole sealing drill way surrounding cylinder of concentration decision maker.

Background

Engineering geological exploration is a geological investigation work carried out to find out geological factors affecting engineering buildings, and drilling is an important technical means in geological exploration work. In order to avoid potential safety hazards caused by geological drilling, such as piping in flood season and the like, the drilling needs to be plugged. In the existing drilling and sealing, a soil layer generally adopts a sealing mud ball to seal a drill hole. Along with economic development and social progress, the requirements for basic farmland protection and environmental protection in rural areas are increasingly strict, clay sources used for drilling and hole sealing mud balls are increasingly tense, supply shortage and quality are often caused, the quality of drilling and hole sealing is difficult to guarantee, the quality of drilling and hole sealing is difficult to control, and hidden dangers are brought to the flood season safety near drilling holes.

At present, researchers research on plugging of a drilling soil layer by adopting cement soil, but some problems can be encountered in the process of filling cement soil slurry on site. These problems include: the standard of grouting in place in the cement soil pouring process is determined, cement soil slurry sinks in the drill rod pulling-out process, and a pouring material is retracted longitudinally in the cement soil setting process.

The standard determination problem of grouting in place in the cement soil pouring process is that in the pouring process from bottom to top, underground water is extruded out of an orifice, partial cement soil slurry is gradually mixed into the gushing underground water, and whether the gushing underground water or the cement soil slurry is difficult to distinguish gradually by naked eyes. Therefore, the surging slurry needs to be judged by adopting technical means.

The problem of cement-soil slurry subsidence in the process of pulling out the drill rod is that in the process of grouting from bottom to top, part of the drill rod is always under the cement-soil slurry, and the space originally occupied in the process of pulling out is filled with the upper cement-soil slurry, so that the liquid level of the cement-soil slurry originally poured is lowered. Because the filling from top to bottom after sinking can bring air bubbles to cause the defect of grouting, the technical means is needed to be adopted to enable the upper liquid level of the cement-soil slurry to be higher than the orifice so as to automatically fill the slurry in the process of pulling out the drill rod and avoid the defect of air entering the hole.

The longitudinal retraction problem of the pouring material in the cement soil coagulation process is that a certain volume retraction condition can be generated in the cement soil slurry coagulation process, and the cement soil slurry in the drilling and pouring process is wholly in a long column shape, so that certain shrinkage cavity or shrinkage porosity can be generated when the longitudinal retraction of the whole body is accumulated. This phenomenon is mainly concentrated in the part close to the orifice, and therefore the cement slurry head level is high at the orifice, which can facilitate the control of such defects to a position above the orifice or closer to the surface.

At present, no similar device exists, field workers often adopt field soil to slightly build up the periphery of a grouting drill hole, the effect is very limited, and the field soil quality limits the grouting drill hole.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough that above-mentioned background art exists, provide a control the full thick liquid concentration that overflows in grout operation process, extract the automatic cement soil hole sealing drill way surrounding cylinder of taking concentration decision maker who mends thick liquid of in-process at the drilling rod.

In order to achieve the above object, the utility model provides a take soil cement hole sealing drill way surrounding cylinder of concentration determination device, including the surrounding cylinder, its characterized in that: the enclosure is of an annular structure with an upper opening and a lower opening, the side wall of the top of the enclosure is concave, a platform is formed at the bottom of the concave part, and a through hole communicated with the space in the enclosure is formed in the top surface of the platform.

As the preferred scheme of the utility model, be equipped with the tread on the lateral wall of surrounding cylinder.

Furthermore, a diversion trench is arranged around the platform.

Furthermore, the surrounding cylinder is formed by splicing a round half cylinder and a square half cylinder, the edge of the round half cylinder is provided with a slot, and the edge of the square half cylinder is inserted into the slot for fixation.

Further, the platform is located at one of the folds of the square half tube.

Further, the enclosure is made of stainless steel.

When the cement soil sealing is adopted in a drilling site, a platform with a through hole is opened by utilizing the characteristic that cement soil slurry with different surface tension with water and high concentration cannot pass through a small hole, so that whether the cement soil slurry overflowing the through hole reaches the concentration required by sealing can be judged. Meanwhile, cement-soil slurry in the space surrounded by the enclosing cylinder can be automatically supplemented in the process of pulling out the drill rod, and the defects of shrinkage cavity and shrinkage porosity can be controlled near the ground in the process of cement-soil slurry condensation.

In addition, the device has simple structure and better durability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural view of a square half cylinder.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a structural view of a cylinder half.

Fig. 5 is a top view of fig. 4.

In the figure: the device comprises a surrounding barrel 1, a platform 2, a through hole 3, a pedal 4, a diversion trench 5, a slot 6, a round half barrel 1.1 and a square half barrel 1.2.

Detailed Description

The technical solutions of the present invention (including the preferred technical solutions) are further described in detail below by means of the attached drawings and some optional embodiments of the present invention.

The embodiment is as follows: a cement soil hole sealing orifice enclosing cylinder with a concentration determination device comprises an enclosing cylinder 1 made of stainless steel, wherein the enclosing cylinder 1 is of an annular structure with an upper opening and a lower opening, the enclosing cylinder 1 is formed by splicing a circular half cylinder 1.1 and a square half cylinder 1.2, and a pedal plate 4 is arranged on the side wall of the enclosing cylinder 1. The edge of the round half cylinder 1.1 is provided with a slot 6, the edge of the square half cylinder 1.2 is inserted into the slot 6 and fixed, the folded edge of the top side wall of the square half cylinder 1.2 is concave and forms a platform 2 at the bottom of the concave part, the top surface of the platform 2 is provided with a through hole 3 communicated with the space in the enclosure cylinder 1, and the periphery of the platform 2 is provided with a diversion trench 5.

When in use:

1) The square half cylinder 1.2 is inserted into the slot 6 of the round half cylinder 1.1 and the edge is aligned, if the drill rod is in the drilling hole, the drill rod needs to be enclosed in the cylinder during the combination.

2) The lower edge of the surrounding tube 1 is inserted into the ground soil, and the pedal 4 is pressed or stepped to fix.

3) The mixed liquid of the underground water and the cement-soil slurry overflows gradually from clear to thick in the grouting process, and the slurry with insufficient concentration overflows from the through hole 3 in the platform 2.

4) When the overflowed slurry reaches a certain concentration, the slurry does not overflow from the small holes of the overflow platform 2 any more, the slurry level in the enclosing cylinder 1 rises, at the moment, the pouring operation is stopped, and 2-3 sections of drill rods can be pulled out.

5) After the cement-soil slurry flows into the drill hole, the grouting and drill rod pulling-out operations can be continued until the drill rod is completely pulled out, and then the cement-soil slurry is continuously supplemented into the surrounding cylinder 1 to compensate for the retraction in the condensation process.

6) After the cement soil slurry is condensed, the pedal 4 is held and the surrounding cylinder 1 is pulled out, and then the square half cylinder 1.2 and the round half cylinder 1.1 are disassembled for cleaning for the next use.

The utility model discloses utilize the surface tension variation of cement soil thick liquid and water, this characteristic of high cement soil thick liquid of concentration can't pass through the aperture has set up platform 2 that has through-hole 3 to this can judge whether the cement soil thick liquid that spills over reaches shutoff requirement concentration. Meanwhile, the surrounding cylinder 1 is higher than cement-soil slurry, so that the cement-soil slurry in the surrounding cylinder 1 can be automatically fed into the drilled hole due to self gravity when the drill rod is pulled out, and defects such as shrinkage cavities and shrinkage porosity which are possibly generated in the condensation process are controlled at the position of a more surface layer.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a take soil cement hole sealing drill way surrounding cylinder of concentration determination device, includes the surrounding cylinder, its characterized in that: the enclosure (1) is of an annular structure with an upper opening and a lower opening, the side wall of the top of the enclosure (1) is concave, a platform (2) is formed at the bottom of the concave part, and a through hole (3) communicated with the space in the enclosure is formed in the top surface of the platform (2).

2. The cement-sealed orifice casing with a concentration determination device according to claim 1, characterized in that: the side wall of the surrounding cylinder (1) is provided with a pedal (4).

3. The cement-sealed orifice casing with a concentration determination device according to claim 1, characterized in that: and flow guide grooves (5) are formed around the platform (2).

4. The cement-sealed orifice casing with a concentration determination device according to claim 1, characterized in that: the wall cylinder (1) is formed by splicing a circular half cylinder (1.1) and a square half cylinder (1.2), a slot (6) is formed in the edge of the circular half cylinder (1.1), and the edge of the square half cylinder (1.2) is inserted into the slot (6) to be fixed.

5. The cement sealed hole opening casing with the concentration determination device according to claim 4, characterized in that: the platform (2) is positioned at one folded edge of the square half cylinder (1.2).

6. The cement-sealed orifice casing with a concentration determination device according to claim 1, characterized in that: the surrounding cylinder (1) is made of stainless steel.