CN217501582U

CN217501582U - Deep hole curtain grout prevents drilling rod device that drops

Info

Publication number: CN217501582U
Application number: CN202221148605.1U
Authority: CN
Inventors: 张俊超; 张国辉; 刘志; 鞠殿东; 李彤君; 王鸿斌
Original assignee: Sinohydro Foundation Engineering Co Ltd
Current assignee: Sinohydro Foundation Engineering Co Ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-27
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses a deep hole curtain grout prevents drilling rod device that drops, including dam bedrock and drilling rod, the drilling rod includes a plurality of segmentations that connect gradually, the lower extreme of every segmentation all is provided with the crown plate, the lower extreme of every segmentation all is provided with down the crown plate, the medial surface of crown plate and lower crown plate all flushes with the inner wall of segmentation, interior crown plate and outer crown plate have set gradually from inside to outside on the up end of the lower terminal surface of crown plate and lower crown plate, be provided with the ring platform on the interior crown plate of lower crown plate, processing have on the interior crown plate of crown plate with ring platform assorted recess, the circumference equipartition has a plurality of bosss on the outer crown plate of lower crown plate, processing has a plurality ofly and the slot of boss one-to-one and mutual matching on the outer crown plate of upper ring plate, pass through bolted connection between the outer crown plate of lower crown plate and the outer crown plate of upper ring plate. The utility model discloses simple structure can strengthen drilling rod junction intensity, and is firm durable, has apparent economic value and social value.

Description

Deep hole curtain grout prevents drilling rod device that drops

Technical Field

The utility model relates to a curtain grouting technical field, concretely relates to deep hole curtain grouting prevents drilling rod shedder.

Background

Generally, curtain grouting construction is mostly adopted for the broken condition of a dam foundation of a dam to meet the seepage-proofing requirement, and the curtain grouting is grouting engineering for filling grout into cracks and gaps of a rock body or a soil layer to form a continuous waterproof curtain so as to reduce seepage flow and reduce seepage pressure. The drill rod is a steel pipe with threads at the tail part and is used for connecting surface equipment of a drilling machine and drilling and grinding equipment or a bottom hole device positioned at the bottom end of a drilling well, the drill rod is used for conveying drilling mud to a drill bit and improving, reducing or rotating the bottom hole device together with the drill bit, the drill rod must bear huge internal and external pressure, distortion, bending and vibration, the curtain grouting hole is deep and is mostly more than 100m, and for the drill rod, the traditional grouting mode has the following problems: firstly, curtain grouting mostly uses a drill rod as a grout injection pipe for grouting, if the bottom of the drill rod is abutted to bedrock, the drill rod is difficult to rotate after grouting, the phenomenon of coagulation of the drill rod and grout is easy to occur in the grouting process, the drill rod is difficult to lift after grouting, and the drill rod is even scrapped when the condition is serious; secondly, in order to avoid the situation that the bottom of the drill rod is abutted to the bedrock, the drill rod is lifted upwards to enable the bottom of the drill rod to be about 50cm away from the bedrock in the construction process, and the drill rod is in a suspended state, but the problem that the drill rod is broken or falls off frequently occurs due to the fact that the grouting hole is deep and heavy is solved, and normal construction is affected; in addition, the whole drill rod can reach the grouting depth only by splicing a plurality of drill rods, and because the number of splicing joints is large, the connecting point is subjected to the rotating torsion of the drill rod and also to the pulling force of the plurality of drill rods and the grouting internal pressure, so that the connection part of the drill rod is easy to fall off. Therefore, it is objectively needed to develop a device for preventing the drill rod from falling off in the deep hole curtain grouting, which has a simple structure, can strengthen the strength of the joint of the drill rod, and is stable and durable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure can strengthen drilling rod junction intensity, and the drilling rod device that drops is prevented in firm durable deep hole curtain grout.

The utility model aims at realizing like this, including dam bedrock and drilling rod, the drilling rod includes a plurality of segmentations that connect gradually, every sectionalized lower extreme all is provided with the crown plate, every sectionalized lower extreme all is provided with down the crown plate, the medial surface of crown plate and lower crown plate all flushes with the inner wall of segmentation, from inside to outside having set gradually interior anchor ring and outer anchor ring on the up end of the lower end face of crown plate and lower crown plate, be provided with the loop platform on the interior anchor ring of lower crown plate, processing has the recess with loop platform assorted on the interior anchor ring of crown plate, the circumference equipartition has a plurality of bosss on the outer anchor ring of lower crown plate, processing has a plurality ofly and the slot of boss one-to-one and mutual matching on the outer anchor ring of crown plate, pass through bolted connection between the outer anchor ring of lower crown plate and the outer anchor ring of crown plate.

Furthermore, a sealing gasket is arranged between the annular table and the groove.

Furthermore, the ring platform is vertically provided with a positioning rod, and the groove is provided with a jack matched with the positioning rod.

Further, a support is arranged on the dam bed rock, a ring sleeved on the drill rod is arranged on the support, the cross section of the ring is in a U shape with an opening facing the inner side, an annular air bag is arranged in a cavity inside the ring, an air charging and discharging pipe is arranged on the annular air bag, and an air compressor is arranged on the air charging and discharging pipe.

Furthermore, the inner side surface of the annular air bag is provided with a wear-resistant anti-slip pad.

Furthermore, a spring is arranged on the bolt between the outer ring surface of the lower ring plate and the outer ring surface of the upper ring plate.

The utility model has the advantages as follows: the upper ring plate and the lower ring plate are connected with each other before each section of the drill rod, on one hand, the ring table is inserted into the groove through the arrangement of the ring table and the groove, and the ring table is limited by the side wall of the groove and cannot shake left and right; on the other hand passes through the cooperation of boss and slot, the boss is inserted in the slot, the connection of rethread bolt, make the bolt only receive the pulling force of vertical direction in the use, do not receive the shearing force of horizontal direction, the shearing force is born by boss and slot, and then each position of upper ring plate and lower ring plate is dispersed to the power that receives each segmentation junction, the lifting surface area is great, the stress state of each part has been optimized, the stress intensity of each part has been improved, the structure of whole junction is firm durable, can increase the structural strength of its junction in the drilling rod use, thereby played and prevented the cracked effect of drilling rod junction, anti-drop's purpose has been reached and prevented splitting. The utility model discloses simple structure can strengthen drilling rod junction intensity, and is firm durable, has apparent economic value and social value.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the outer structures of the upper ring plate 4 and the lower ring plate 5 in the present invention;

fig. 3 is a schematic view of a connection structure of the upper ring plate 4 and the lower ring plate 5 in the present invention;

in the figure: 1-dam bedrock, 2-drill pipe, 3-subsection, 4-upper ring plate, 5-lower ring plate, 6-ring table, 7-boss, 8-slot, 9-bolt, 10-sealing gasket, 11-positioning rod, 12-jack, 13-bracket, 14-ring, 15-annular air bag, 16-inflation and deflation pipe, 17-air compressor, 18-wear-resistant anti-slip pad and 19-spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited in any way, and any changes or improvements based on the present invention are all within the protection scope of the present invention.

As shown in figures 1-3, the utility model comprises a dam bed 1 and a drill rod 2, the dam bed 1 is prior art, a grouting hole is arranged on the dam bed 1, the drill rod 2 is inserted into the grouting hole, the drill rod 2 comprises a plurality of subsections 3 connected in sequence, the lower end of each subsection 3 is provided with an upper ring plate 4, the upper end of each subsection 3 is provided with a lower ring plate 5, the inner side surfaces of the upper ring plate 4 and the lower ring plate 5 are flush with the inner wall of the subsection 3, the circulation area of the positions of the upper ring plate 4 and the lower ring plate 5 is ensured, the arrangement can prevent the slurry from being blocked at the positions of the upper ring plate 4 and the lower ring plate 5, the smooth circulation of the slurry in the drill rod 2 is ensured, the lower end surface of the upper ring plate 4 and the upper end surface of the lower ring plate 5 are provided with an inner ring surface and an outer ring surface in sequence from inside to outside, the inner ring surface of the lower ring plate 5 is provided with a ring platform 6, a groove matched with the ring platform 6 is processed on the inner ring surface of the upper ring plate 4, during the use, 6 cooperations of ring platform are inserted in the recess, can prevent to rock about 6 ring platforms, guarantee the axiality of upper ring plate 4 and lower ring plate 5, and then guarantee the straightness accuracy of whole root drilling rod 2, it rocks or the swing phenomenon to appear when preventing drilling rod 2 from rotating, guarantee going on smoothly of deep hole curtain grout operation, the circumference equipartition has a plurality of bosss 7 on the outer anchor ring of lower ring plate 5, it has a plurality of slots 8 that just match each other with boss 7 one-to-one to process on the outer anchor ring of upper ring plate 4, connect through bolt 9 between the outer anchor ring of lower ring plate 5 and the outer anchor ring of upper ring plate 4.

In the utility model, each section 3 of the drill rod 2 is connected with the lower ring plate 5 through the upper ring plate 4, on one hand, the ring table 6 is inserted into the groove through the arrangement of the ring table 6 and the groove between the upper ring plate 4 and the lower ring plate 5, and the ring table 6 is limited by the side wall of the groove and can not shake left and right; on the other hand passes through boss 7 and slot 8's cooperation, boss 7 inserts in slot 8, rethread bolt 9's connection, make bolt 9 only receive the pulling force of vertical direction in the use, do not receive the shearing force of horizontal direction, the shearing force is born by boss 7 and slot 8, and then each position of upper ring plate 4 and lower ring plate 5 is dispersed to the power that receives each segmentation 3 junction, the lifting surface is great, the stress state of each part has been optimized, the stress intensity of each part has been improved, the structure of whole junction is firm durable, can increase the structural strength of its junction in drilling rod 2 use, thereby prevented the cracked effect of drilling rod 2 junction has been played, anti-drop's purpose of preventing splitting has been reached.

Be provided with sealed pad 10 between ring platform 6 and the recess, the thick liquid is pressed in the pressure in the inside meeting of drilling rod 2 during the use, leaks from the space between upper ring plate 4 and the lower ring plate 5 in order to prevent the thick liquid, influences the grout effect of deep hole curtain and has set up sealed pad 10, and the setting of sealed pad 10 can prevent that the thick liquid in the drilling rod 2 from leaking.

The ring platform 6 is vertically provided with a positioning rod 11, the groove is provided with a jack 12 matched with the positioning rod 11, the positioning rod 11 is arranged for the convenience of installation of the upper ring plate 4 and the lower ring plate 5, when the ring platform is installed, the positioning rod 11 can be aligned to the jack 12, the positioning rod 11 is inserted into the jack 12, and then the positioning and installation of the upper ring plate 4 and the lower ring plate 5 can be completed conveniently and quickly.

A support 13 is arranged on a dam foundation 1, a ring 14 sleeved on a drill rod 2 is arranged on the support 13, the cross section of the ring 14 is in a U shape with an opening facing to the inner side, an annular air bag 15 is arranged in a cavity in the ring 14, an air inflation and deflation pipe 16 is arranged on the annular air bag 15, an air compressor 17 is arranged on the air inflation and deflation pipe 16, in order to prevent the bottom of the drill rod 2 from being propped against the foundation, the drill rod 2 is lifted upwards to enable the bottom of the drill rod 2 to be about 50cm away from the foundation in the construction process, the drill rod 2 is in a suspended state, at the moment, the position of the drill rod 2 can be fixed by a hoisting device or other hoisting devices, however, the drill rod 2 is heavier, slurry is also introduced into the drill rod 2, the weight of the drill rod 2 is increased, at the moment, in order to prevent the drill rod 2 from falling accidentally, and in order to reduce the load of the hoisting device, compressed air can be filled into the annular air bag 15 through the air compressor 17, the annular air bag 15 is pressed to expand, so that the inner side surface of the annular air bag is tightly attached to the outer surface of the drill rod 2, the drill rod 2 is clamped, and the effect of positioning the drill rod 2 is achieved.

Be provided with wear-resisting slipmat 18 on the medial surface of annular gasbag 15, wear-resisting slipmat 18 is prior art, has great frictional force between its and drilling rod 2, can be more firm fix drilling rod 2, and then prevent that drilling rod 2 from sliding downwards.

The spring 19 is arranged on the bolt 9 between the outer annular surface of the lower annular plate 5 and the outer annular surface of the upper annular plate 4, and when the bolt is used, the spring 19 is pressed to have a tendency of extension, so that the bolt 9 can be pre-tightened, and the bolt 9 can be prevented from being accidentally loosened.

Claims

1. A deep hole curtain grouting drill rod falling prevention device comprises dam bedrock (1) and a drill rod (2), and is characterized in that the drill rod (2) comprises a plurality of subsections (3) which are connected in sequence, an upper ring plate (4) is arranged at the lower end of each subsection (3), a lower ring plate (5) is arranged at the upper end of each subsection (3), the inner side surfaces of the upper ring plate (4) and the lower ring plate (5) are flush with the inner walls of the subsections (3), an inner ring surface and an outer ring surface are sequentially arranged on the lower end surface of the upper ring plate (4) and the upper end surface of the lower ring plate (5) from inside to outside, a ring platform (6) is arranged on the inner ring surface of the lower ring plate (5), a groove matched with the ring platform (6) is processed on the inner ring surface of the upper ring plate (4), a plurality of bosses (7) are uniformly distributed on the outer ring surface of the lower ring plate (5), a plurality of inserting grooves (8) which correspond to the bosses (7) and are matched with each other one by one are processed on the outer ring surface of the upper ring plate (4), the outer ring surface of the lower ring plate (5) is connected with the outer ring surface of the upper ring plate (4) through a bolt (9).

2. The device for preventing the drill rod from falling off in the deep-hole curtain grouting process according to claim 1, wherein a sealing gasket (10) is arranged between the annular table (6) and the groove.

3. The deep-hole curtain grouting drill rod falling-off prevention device according to claim 1 is characterized in that a positioning rod (11) is vertically arranged on the annular table (6), and a jack (12) matched with the positioning rod (11) is machined in the groove.

4. The deep-hole curtain grouting drill rod falling-off prevention device according to claim 1 is characterized in that a support (13) is arranged on the dam bed rock (1), a ring (14) sleeved on the drill rod (2) is arranged on the support (13), the cross section of the ring (14) is in a U shape with an opening facing inwards, an annular air bag (15) is arranged in a cavity inside the ring (14), an air inflation and deflation pipe (16) is arranged on the annular air bag (15), and an air compressor (17) is arranged on the air inflation and deflation pipe (16).

5. The device for preventing the drill rod from falling off in the deep-hole curtain grouting process according to claim 4, wherein a wear-resistant anti-slip pad (18) is arranged on the inner side surface of the annular air bag (15).

6. The deep hole curtain grouting anti-drill rod falling device according to claim 1, characterized in that a spring (19) is arranged on the bolt (9) between the outer ring surface of the lower ring plate (5) and the outer ring surface of the upper ring plate (4).