CN112302013A

CN112302013A - Grouting reinforcement anchor rod for supporting

Info

Publication number: CN112302013A
Application number: CN202011152077.2A
Authority: CN
Inventors: 刘峰; 赵丁墨; 赵连佳
Original assignee: Liaoning Institute of Science and Technology
Current assignee: Liaoning Institute of Science and Technology
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-02-02

Abstract

The utility model provides a support and consolidate stock with slip casting, through main shaft A, main shaft B, main shaft C rotates and drives the drill bit rotation and carry out the drilling, adopt pushing equipment to push away horizontal stock after drilling to the design degree of depth, horizontal stock pushes away and makes crooked stock antedisplacement through the connecting piece, crooked stock under the effect of power crooked stock front end gets into crooked passageway along the bending groove, get into the soil body behind crooked stock front end getting into crooked passageway tail end, crooked stock presents certain angle with the drilling, be fixed in horizontal stock A and horizontal stock B in the anchor plate, carry out the mud jacking from the slip casting hole, the venthole exhausts, carry out the anchor to main shaft C after the concrete strength reaches more than 75%, accomplish support and consolidate stock work with the stretch-draw, crooked stock anchor district and main shaft anchor district interact, bear in coordination, can improve the effect of strutting. The anchor rod combination is suitable for anchoring the side slope of the soil foundation pit.

Description

Grouting reinforcement anchor rod for supporting

Technical Field

The invention relates to a grouting reinforced anchor rod for supporting, which is particularly suitable for supporting in the supporting field of deep foundation pit, slope protection and the like.

Background

Currently, as a support means with low cost, obvious effect and convenient and fast field construction, the anchor rod is widely applied to the field of surrounding rock support, and CN107387141B proposes a self-drilling type differential grouting combined anchor rod and an anchoring method thereof, wherein the anchor rod consists of a drill bit, a grouting pipe, a main shaft, an anchor head mechanism and an anchor tail mechanism. The anchor head mechanism comprises a fixed ring, a sliding ring, a limiting pipe, a plurality of pairs of passive connecting rods and a plurality of pairs of active connecting rods. The stability of the anchor end in the stock can be guaranteed to anchor head mechanism cooperation fracture slip casting. The anchor tail mechanism comprises an anchor disc, a connecting cap, a spring and a nut; the connecting cap enables the grouting pipe and the main shaft to cooperatively deform and jointly bear the load, and the spring enables the anchor rod to enter in time and be in an active supporting state for a long time. The combined anchor rod can be used for drilling holes in weak and broken surrounding rocks, expanding holes at the inner anchor end, splitting grouting and other sections of penetration grouting. The grouting pipe anchors surrounding rocks in a small range around the grouting pipe in a full-length anchoring mode; the main shaft plays an extrusion reinforcing role in surrounding rocks in a large range including the grouting pipe anchoring area, the grouting pipe anchoring area and the main shaft anchoring area interact and cooperatively bear, the supporting effect can be improved, how the anchor rod plays a high-strength prestress reinforcing role in side slope supporting on a supported rock body can increase the pulling resistance of the anchor rod, and the problem that needs to be solved urgently in the field of current anchor rod supporting is solved.

Disclosure of Invention

In order to achieve the purpose, the grouting reinforcement anchor rod for supporting is realized by adopting the following technical scheme: a slip casting reinforced anchor rod for supporting comprises a drilling hole, a tunneling mechanism, a reinforced anchoring mechanism and an anchor tail mechanism, wherein the tunneling mechanism comprises a drill bit, a main shaft A, a main shaft B and a main shaft C; the reinforced anchoring mechanism comprises a bent channel A, a transverse channel A, a bent anchor rod A, a transverse anchor rod A, a bent channel B, a transverse channel B, a bent anchor rod B, a transverse anchor rod B, a connecting piece, a bent groove, a spherical groove and a push rod; the anchor tail mechanism comprises a grout stop plug, an anchor disc, a nut, an exhaust hole and a grouting hole; the drilling machine is characterized in that a drill bit is arranged at the end part of a drilling hole, a main shaft A is connected behind the drill bit, a main shaft B is connected behind the main shaft A, the main shaft B is connected with a main shaft C, an anchor disc is connected behind the main shaft C, and a nut is connected behind the anchor disc.

The transverse passage A is evenly distributed along the circumference of the main shaft B and internally tangent with the main shaft B, the front end of the transverse passage A is welded with the bent passage A, the transverse anchor rod A is positioned in the transverse passage A, the bent anchor rod A is positioned in the bent passage A, and the front end of the transverse anchor rod A is hinged with the bent anchor rod A through a connecting piece.

The transverse passage B is uniformly distributed along the circumference of the main shaft C and internally tangent with the main shaft C, the front end of the transverse passage B is welded with the bent passage B, the transverse anchor rod B is positioned in the transverse passage B, the bent anchor rod B is positioned in the bent passage B, and the front end of the transverse anchor rod B is hinged with the bent anchor rod B through a connecting piece.

Crooked stock A and crooked stock B comprise a plurality of units, and every unit includes spherical groove, push rod and crooked stock unit, and crooked stock unit tip central point puts and sets up spherical groove, sets up the push rod between the spherical groove of adjacent crooked stock unit, and the push rod both ends set up to two balls respectively, and the ball freely rotates in spherical groove.

The diameter of the circumference of the main shaft A is equal to that of the circumference of the main shaft B, the diameter of the main shaft C is equal to the sum of the diameter of the main shaft B and five times of the diameter of the transverse anchor rod B, the diameter of the curved channel A is equal to that of the curved anchor rod A, and the diameter of the transverse channel A is equal to that of the transverse anchor rod A.

The bending groove is a groove-shaped groove, and the diameter of the tail end of the groove is consistent with that of the bending anchor rod A.

The invention has the beneficial effect.

After the technical scheme is adopted, the grouting reinforcement anchor rod for supporting has the following beneficial effects: set up horizontal stock A and horizontal stock B at main shaft B and main shaft C circumference, crooked stock A and crooked stock B are connected respectively to horizontal stock A and horizontal stock front end, and crooked stock gets into crooked passageway along crooked groove under the mechanical action, and crooked stock front end gets into the soil body behind the crooked passageway end, and crooked stock presents certain angle with the drilling and reaches the stock and consolidates the strut effect.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram of the structural working state of the present invention.

Fig. 3 is a left side view of the present invention.

FIG. 4 is a right side view in section B-B.

Fig. 5 is a right side view of section a-a.

Fig. 6 is an enlarged view of a portion a.

Fig. 7 is an enlarged partial top view a.

Fig. 8 is an enlarged partial side view a.

Fig. 9 is an assembly view of the bent anchor unit.

Labeled as: the drilling machine comprises a drilling hole 1, a drill bit 2, a main shaft A31, a main shaft B32, a main shaft C33, a bent channel A4 and a transverse channel A5; a curved anchor A6, a transverse anchor A7, a curved channel B8, a transverse channel B9; the anchor rod unit comprises a bent anchor rod B10, a transverse anchor rod B11, a connecting piece 12, a grout stop plug 13, an anchor disc 14, a nut 15, an exhaust hole 16, a grouting hole 17, a bent groove 18, a spherical groove 19, a push rod 20 and a bent anchor rod unit 21.

Detailed Description

For further description of the present invention, a grouting reinforced anchor rod for supporting according to the present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-9, a grouting reinforced anchor rod for supporting comprises a drill hole 1, a tunneling mechanism, a reinforced anchoring mechanism and an anchor tail mechanism, wherein the tunneling mechanism comprises a drill bit 2, a main shaft a31, a main shaft B32 and a main shaft C33; the reinforced anchoring mechanism comprises a curved channel A4, a transverse channel A5, a curved anchor A6, a transverse anchor A7, a curved channel B8, a transverse channel B9, a curved anchor B10, a transverse anchor B11, a connecting piece 12, a curved groove 18, a spherical groove 19 and a push rod 20; the anchor tail mechanism comprises a grout stop plug 13, an anchor disc 14, a nut 15, an exhaust hole 16 and a grouting hole 17; the end part of the drill hole 1 is provided with a drill bit 2, the rear part of the drill bit 2 is connected with a main shaft A31, the rear part of a main shaft A31 is connected with a main shaft B32, a main shaft B32 is connected with a main shaft C33, the rear part of a main shaft C33 is connected with an anchor disc 14, and the rear part of the anchor disc 14 is connected with a nut 15.

The transverse channels A5 are evenly distributed along the circumference of the main shaft B32, the transverse channels A5 are internally tangent to the main shaft B32, the front ends of the transverse channels A5 are welded with the curved channels A4, the transverse bolts A7 are located in the transverse channels A5, the curved bolts A6 are located in the curved channels A4, and the front ends of the transverse bolts A7 are hinged to the curved bolts A6 through the connecting pieces 12.

The transverse channels B9 are evenly distributed along the circumference of the main shaft C33, the transverse channels B9 are internally tangent to the main shaft C33, the front end of the transverse channel B9 is welded with the curved channel B8, the transverse anchor rods B11 are located in the transverse channels B9, the curved anchor rods B10 are located in the curved channel B8, and the front end of the transverse anchor rods B11 is hinged to the curved anchor rods B10 through the connecting piece 12.

The bending anchor rod A6 and the bending anchor rod B10 are composed of a plurality of units, each unit comprises a spherical groove 19, a push rod 20 and a bending anchor rod unit 21, the spherical groove 19 is formed in the center of the end portion of each bending anchor rod unit 21, the push rods 20 are arranged between the spherical grooves (19) of the adjacent bending anchor rod units 21, two ends of each push rod 20 are respectively provided with two round balls, and the round balls can freely rotate in the spherical grooves 19.

The diameters of the circumferences of the main shaft A31 and the main shaft B32 are equal, the diameter of the main shaft C33 is equal to the sum of the diameter of the main shaft B32 and five times of the diameter of the transverse anchor B11, the diameter of the curved channel A4 is equal to the diameter of the curved anchor A6, and the diameter of the transverse channel A5 is equal to the diameter of the transverse anchor A7.

The bending groove 18 is a groove-shaped groove, and the diameter of the tail end of the groove is consistent with that of the bending anchor rod A6.

The working principle is as follows.

The invention comprises a drilling hole 1, a tunneling mechanism, a reinforcing anchoring mechanism and an anchor tail mechanism, and skillfully integrates the functions of drilling hole 1, reinforcing anchoring, grouting, anchor rod supporting and the like, the basic principle is that a drill bit 2 is driven to rotate by the rotation of a main shaft A31, a main shaft B32 and a main shaft C33 to perform drilling hole 1, when the drilling hole 1 reaches the designed depth, a pushing device is used for pushing a transverse anchor rod A7, a transverse anchor rod A7 pushes a bending anchor rod A6 to move forwards through a connecting piece 12, the front end of the bending anchor rod A6 enters a bending channel A4 along a bending groove 18 under the action of force, the front end of the bending anchor rod A6 enters a soil body through the tail end of the bending channel A4 under the action of force of the bending anchor rod A6, and the bending anchor rod A6 and; pushing a transverse anchor rod B11 by using a pushing device, pushing a transverse anchor rod 10B to enable a bent anchor rod B10 to move forwards through a connecting piece 12, enabling the front end of the bent anchor rod B10 to enter a bent channel B8 along a bent groove 18 under the action of force of the bent anchor rod B10, enabling the front end of the bent anchor rod B10 to enter the tail end of the bent channel B8 and then enter a soil body under the action of force of the bent anchor rod B10, and enabling the bent anchor rod B10 to form a certain angle with the drill hole 1; fixing the transverse anchor rod A7 and the transverse anchor rod B11 on the anchor disc 14, grouting from the grouting hole 17, exhausting from the air outlet hole 16, and tensioning and anchoring the main shaft C33 after the strength of concrete reaches over 75 percent. And finishing the work of reinforcing the anchor rod by grouting for supporting.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A slip casting reinforced anchor rod for supporting is characterized by comprising a drilling hole (1), a tunneling mechanism, a reinforcing anchoring mechanism and an anchor tail mechanism, wherein the tunneling mechanism comprises a drill bit (2), a main shaft A (31), a main shaft B (32) and a main shaft C (33); the reinforced anchoring mechanism comprises a bent channel A (4), a transverse channel A (5), a bent anchor rod A (6), a transverse anchor rod A (7), a bent channel B (8), a transverse channel B (9), a bent anchor rod B (10), a transverse anchor rod B (11), a connecting piece (12), a bent groove (18), a spherical groove (19) and a push rod (20); the anchor tail mechanism comprises a grout stop plug (13), an anchor disc (14), a nut (15), an exhaust hole (16) and a grouting hole (17); the end part of the drilling hole (1) is provided with a drill bit (2), the rear part of the drill bit (2) is connected with a main shaft A (31), the rear part of the main shaft A (31) is connected with a main shaft B (32), the main shaft B (32) is connected with a main shaft C (33), the rear part of the main shaft C (33) is connected with an anchor disc (14), and the rear part of the anchor disc (14) is connected with a nut (15).

2. A grouting-reinforced rock bolt for support according to claim 1, characterised in that: transverse channel A (5) evenly distributed along main shaft B (32) circumference and transverse channel A (5) and main shaft B (32) inscribe, transverse channel A (5) front end and crooked passageway A (4) welding, transverse stock A (7) are in transverse channel A (5), crooked stock A (6) are located crooked passageway A (4), transverse stock A (7) front end and crooked stock A (6) pass through connecting piece (12) articulated.

3. A grouting-reinforced rock bolt for support according to claim 1, characterised in that: the transverse channel B (9) is uniformly distributed along the circumference of the main shaft C (33), the transverse channel B (9) is internally tangent to the main shaft C (33), the front end of the transverse channel B (9) is welded with the bent channel B (8), the transverse anchor rod B (11) is positioned in the transverse channel B (9), the bent anchor rod B (10) is positioned in the bent channel B (8), and the front end of the transverse anchor rod B (11) is hinged to the bent anchor rod B (10) through a connecting piece (12).

4. A grouting-reinforced rock bolt for support according to claim 1, characterised in that: bending anchor rod A (6)

And the bending anchor B (10) is composed of a plurality of units, each unit includes a spherical groove (19), a push rod (20) and a bend

The anchor rod unit (21), the center of the end part of the bent anchor rod unit (21) is provided with a spherical groove (19), and adjacent bent anchor rods

A push rod (20) is arranged between the spherical grooves (19) of the unit (21), two ends of the push rod (20) are respectively provided with two spheres,

the ball rotates freely in the spherical groove (19).

5. A grouting-reinforced rock bolt for support according to claim 1, characterised in that: the diameters of the circumferences of the main shaft A (31) and the main shaft B (32) are equal, the diameter of the main shaft C (33) is equal to the sum of the diameter of the main shaft B (32) and five times of the diameter of the transverse anchor rod B (11), the diameter of the bent channel A (4) is equal to the diameter of the bent anchor rod A (6), and the diameter of the transverse channel A (5) is equal to the diameter of the transverse anchor rod A (7).

6. A grouting-reinforced rock bolt for support according to claim 1, characterised in that: the bending groove (18) is a groove-shaped groove, and the diameter of the tail end of the groove is consistent with that of the bending anchor rod A (6).