CN112982420B

CN112982420B - Geotechnical engineering fault fractured rock mass grouting equipment

Info

Publication number: CN112982420B
Application number: CN202110165396.5A
Authority: CN
Inventors: 李孝雄; 邸云菲; 张文超; 袁枫斌; 刘江
Original assignee: Chuzhou University
Current assignee: Chuzhou University
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2022-07-26
Anticipated expiration: 2041-02-06
Also published as: CN112982420A

Abstract

The invention discloses geotechnical engineering fault fractured rock mass grouting equipment, which relates to the technical field of geotechnical engineering and comprises a trolley, an anchor rod, a partition part, a grouting mechanism and a pushing mechanism, wherein a slurry storage chamber is arranged inside the trolley, and the grouting mechanism is installed on the slurry storage chamber and is used for injecting mortar into a rock hole of a drill body. According to the invention, the separation part is sleeved on the anchor rod, and the fault cracks in the open holes are blocked by the separation barrel I and the separation barrel II which can adjust the distance, so that the flowing and diffusion of slurry at the position are avoided, the effective grouting of the fault cracks with any distance can be realized, and the required slurry consumption is greatly reduced; through set up thrusting mechanism on the platform truck for the separation is accomplished to trompil inner wall and the grout outlet of stock lower extreme, generates appropriate slip casting clearance, makes the flow state mortar can flow from whole grout outlet effectively, has improved slip casting efficiency, and the lift of lift seat can also realize carrying out the slip casting to the drilling body rock bore of co-altitude not simultaneously.

Description

Geotechnical engineering fault fractured rock mass grouting equipment

Technical Field

The invention relates to the technical field of geotechnical engineering, in particular to geotechnical engineering fault fractured rock mass grouting equipment.

Background

The rock foundation support treatment is a retaining, reinforcing and protecting measure adopted for underground structure construction and surrounding environment in geotechnical engineering, a rock drilling machine is generally used for drilling a hole at a calibration position, then fluid mortar is injected into the hole through an anchor rod, and the slurry is diffused and consolidated in the hole to effectively improve the stability of a support structure.

However, in the long-time use process, the existing grouting equipment still has certain disadvantages: firstly, due to the complex stratum conditions, fault cracks and other working conditions exist in the stratum, if the calibration position is just located at the position corresponding to the fault cracks, mortar can be lost into the fault in the grouting process, the mortar consumption for completely filling the fault cracks can be quite large, and under the condition that the grouting space is too large, quick-setting expansion grout can be unevenly filled in the hole, a grouting leaking cavity is formed, and the supporting and reinforcing strength is affected; in the grouting process, the anchor rod is inserted in the grouting hole in a lap mode, the inner wall of the opening hole is blocked and located at the lower end grout outlet, the number of effective grout outlets in the grouting space is insufficient under the condition of certain grouting pressure, and the grouting speed is very slow especially under the condition of a rock foundation with fault cracks.

Disclosure of Invention

The invention aims to provide geotechnical engineering fault fractured rock mass grouting equipment to overcome the defects caused in the prior art.

The geotechnical engineering fault fracture rock mass grouting equipment comprises a trolley, an anchor rod, a partition part, a grouting mechanism and a pushing mechanism, wherein a slurry storage chamber is arranged inside the trolley, the grouting mechanism is installed on the slurry storage chamber and used for injecting mortar into a rock mass drilled hole, the pushing mechanism is installed in the trolley and used for adjusting the application height of the anchor rod in a lifting mode, and the partition part is sleeved on the anchor rod and used for avoiding diffusion of slurry at a rock fault fracture.

Preferably, the partition part comprises a first partition barrel, a second partition barrel and an expansion type rubber water stop ring, the first partition barrel and the second partition barrel are both arranged on the anchor rod in a sliding mode, the expansion type rubber water stop ring is provided with two rubber water stop rings which are respectively fixed on two sides of the first partition tube and the second partition tube, the inner side of the first partition tube is provided with a chute, the side end of the second partition tube is arranged in the chute in a sliding manner, a spring connected with the side end of the second partition tube is arranged in the chute, the first partition tube is provided with two symmetrically arranged positioning heads I through a first torsion spring, the first partition tube is also provided with an open cavity, the upper end of the open cavity is provided with a plurality of evenly distributed limiting clamping grooves, the second separating cylinder is internally provided with a abdicating cavity, the upper end of the abdicating cavity is provided with two Z-shaped positioning heads which are symmetrically arranged through a second torsion spring, the port part of the abdicating cavity is hinged with a support rod, and the other end of the support rod is arranged in the opening cavity.

Preferably, grouting mechanism includes force pump, play thick liquid pipe and check valve, the force pump is installed on the side of storing up the thick liquid room, it connects in the outside of storing up the thick liquid room through slip casting communicating pipe to go out the thick liquid pipe, the check valve sets up in the tip position of a thick liquid pipe, and the side of check valve is hung and is arranged in on the side of platform truck.

Preferably, the pushing mechanism includes driving motor, cylinder, lift seat and push rod, the inside of platform truck is fixed with the guide post that two symmetries set up, the lift seat slides and sets up on the guide post, and the side fixedly connected with supporting piece of lift seat, driving motor installs on the side of lift seat, and driving motor's output is connected with the driving roller, the cylinder is installed on the interior diapire of platform truck, and the output of cylinder links to each other with the lower extreme of lift seat, the push rod slides and sets up in supporting piece, and the terminal surface of push rod supports and leans on the rim in the driving roller.

Preferably, the anchor rod is a hollow anchor rod body, the tail part of the anchor rod is provided with a grout stopping base plate at the drilling hole of the rock body and is fixed through a locking nut, and a grout stopping plug is installed at the port of the tail part of the anchor rod.

Preferably, the outer diameters of the first partition tube, the second partition tube and the expansion rubber water stop ring are matched with a rock body drill hole, and when the first positioning head and the second positioning head rotate and are in a spreading state, the end parts of the first positioning head and the second positioning head exceed the edge of the rock body drill hole.

Preferably, when the second positioning head rotates and is unfolded, the lower end of the second positioning head abuts against one end of the supporting rod, and the other end of the supporting rod is clamped in the limiting clamping groove.

Preferably, the outer edge end face of the driving roller is made of rubber, and relative displacement can be performed between the driving roller and the end face of the push rod.

The invention has the advantages that:

(1) by sleeving the partition part on the anchor rod, fault cracks in the open holes are blocked by the partition barrel I and the partition barrel II which can adjust the space, so that flowing diffusion of grout at the position is avoided, effective grouting of the fault cracks with any space can be realized, and in the grouting process, the grout is filled in the anchor rod, between the anchor rod and a rock body drill hole and between the anchor rod and the partition part, so that the required grout consumption is greatly reduced on the premise of ensuring the supporting and reinforcing strength;

(2) through set up thrusting mechanism on the platform truck, under the direction of supporting piece, still hold up the stock in rock mass drilling when promoting the partition part removal by the push rod for the separation is accomplished with the grout outlet of stock lower extreme to the trompil inner wall, generates appropriate slip casting clearance, makes the flow state mortar can flow from whole grout outlet effectively, has improved slip casting efficiency, and the lift of lift seat can also realize carrying out the slip casting to the rock mass drilling of co-altitude simultaneously.

Drawings

Fig. 1 is a schematic view of the structure of the invention inside a rock mass.

Fig. 2 is a schematic structural view of the invention outside a rock mass.

Fig. 3 is an enlarged view of a point a in fig. 1.

Fig. 4 is an enlarged view of fig. 1 at B.

Fig. 5 is a schematic view of the assembly of the anchor and the partition in the present invention.

Fig. 6 is a schematic view of the anchor rod of the present invention secured to a rock mass.

Wherein, 1-trolley, 2-anchor rod, 3-partition part, 4-grouting mechanism, 5-pushing mechanism, 6-slurry storage chamber, 301-first separating cylinder, 302-second separating cylinder, 303-expansion rubber water stop ring, 304-chute, 305-spring, 306-first torsion spring, 307-first positioning head, 308-open cavity, 309-limit clamping groove, 310-abdicating cavity, 311-second torsion spring, 312-second positioning head, 313-resisting rod, 41-pressure pump, 42-slurry outlet pipe, 43-check valve, 44-grouting communicating pipe, 51-driving motor, 52-cylinder, 53-lifting seat, 54-push rod, 55-guide column, 56-bearing piece, 57-driving roller and 21-slurry stop cushion plate, 22-locking nut, 23-grout stopping plug.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

As shown in fig. 1 to 6, the grouting equipment for the fractured rock mass in the geotechnical engineering comprises a trolley 1, an anchor rod 2, a partition part 3, a grouting mechanism 4 and a pushing mechanism 5, wherein a slurry storage chamber 6 is arranged inside the trolley 1, the grouting mechanism 4 is installed on the slurry storage chamber 6 and used for injecting mortar into a drilled hole of the rock mass, the pushing mechanism 5 is installed in the trolley 1 and used for adjusting the application height of the anchor rod 2 in a lifting mode, and the partition part 3 is sleeved on the anchor rod 2 and used for preventing the slurry from diffusing at the fractured fracture of the rock mass.

In this embodiment, the reinforcing slurry is a fluid mortar, and an accelerator and a micro-expansion agent are added therein.

In this embodiment, the partition 3 includes a first partition barrel 301, a second partition barrel 302 and an expansion rubber water stop ring 303, the first partition barrel 301 and the second partition barrel 302 are slidably disposed on the anchor rod 2, the expansion rubber water stop ring 303 has two parts and is respectively fixed on two sides of the first partition barrel 301 and the second partition barrel 302, a sliding groove 304 is disposed on an inner side of the first partition barrel 301, a side end of the second partition barrel 302 is slidably disposed in the sliding groove 304, a spring 305 connected to a side end of the second partition barrel 302 is disposed in the sliding groove 304, two symmetrically disposed first positioning heads 307 are mounted on the first partition barrel 301 through a first torsion spring 306, an open cavity 308 is further disposed in the first partition barrel 301, a plurality of uniformly distributed limiting clamping grooves 309 are disposed at an upper end of the open cavity 308, a yielding cavity 310 is disposed in the second partition barrel 302, two symmetrically disposed "Z" -shaped second positioning heads 312 are mounted at an upper end of the yielding cavity 310 through a second torsion spring 311, the end opening of the yielding cavity 310 is hinged with a support rod 313, and the other end of the support rod 313 is arranged in the opening cavity 308.

In this embodiment, the grouting mechanism 4 includes a pressure pump 41, a slurry outlet pipe 42, and a check valve 43, the pressure pump 41 is installed on the side end of the slurry storage chamber 6, the slurry outlet pipe 42 is connected to the outer side of the slurry storage chamber 6 through a grouting communicating pipe 44, the check valve 43 is disposed at the end position of the slurry outlet pipe 42, and the side end of the check valve 43 is hung on the side end of the trolley 1.

In this embodiment, the pushing mechanism 5 includes a driving motor 51, an air cylinder 52, a lifting seat 53 and a push rod 54, two guide posts 55 symmetrically arranged are fixed inside the trolley 1, the lifting seat 53 is slidably disposed on the guide posts 55, a supporting member 56 is fixedly connected to a side end of the lifting seat 53, the driving motor 51 is mounted on the side end of the lifting seat 53, an output end of the driving motor 51 is connected with a driving roller 57, the air cylinder 52 is mounted on an inner bottom wall of the trolley 1, an output end of the air cylinder 52 is connected to a lower end of the lifting seat 53, the push rod 54 is slidably disposed in the supporting member 56, and an end face of the push rod 54 abuts against a rim of the driving roller 57.

It is worth mentioning that the inside of the bearing piece 56 is matched with the push rod 54, and the center line of the bearing piece 56 and the center line of the rock body drilling hole are coincided, so that the anchor rod 2 is always kept in a non-contact state in the rock body drilling hole in the grouting process, the fluid mortar can effectively flow out of all grout outlet holes, and the grouting efficiency is improved.

In this embodiment, the stock 2 is the cavity stock body, and the afterbody of stock 2 sets up in rock mass drilling hole and ends thick liquid backing plate 21 to fixed through lock nut 22, the afterbody port of stock 2 is installed and is stopped thick liquid end cap 23.

In this embodiment, the outer diameters of the first partition barrel 301, the second partition barrel 302 and the expansion rubber water stop ring 303 are matched with a rock body drilled hole, and when the first positioning head 307 and the second positioning head 312 are in a rotating and unfolding state, the end parts of the two exceed the edge of the rock body drilled hole, so that the partition part 3 can automatically adapt to fault fractures with different space lengths.

In this embodiment, when the second positioning head 312 is in a rotating and unfolding state, the lower end of the second positioning head abuts against one end of the abutting rod 313, and the other end of the abutting rod 313 is clamped in the limiting clamping groove 309, so that the partition portion 3 can be automatically positioned between fault fractures at any interval.

It should be noted that the pushing section of the push rod 54 is a symmetrically arranged toothed insertion section, the rod diameter of the toothed insertion section is smaller than the grout outlet hole on the anchor rod 2, and the length of the toothed insertion section is not smaller than the length of the grout outlet pipe 42, so that the grout outlet pipe 2 can directly perform grouting operation in the gap section of the push rod 54, and a necessary grouting gap is ensured between the end surface of the anchor rod 2 and the rock body drilled hole.

In addition, the end face of the outer edge of the driving roller 57 is made of rubber, and the driving roller 57 and the end face of the push rod 54 can perform relative displacement, so that after the partition 3 is positioned in a fault fracture, the push rod 54 slides relative to the driving roller 57, and the push rod 54 is ensured not to forcibly push the partition 3 to move continuously.

The working process and principle are as follows: in the using process of the invention, firstly, a power device drives a trolley 1 to move to a grouting position on a construction track, an air cylinder 52 is started to enable an output end of the air cylinder to push a pushing mechanism 5 to move to a position corresponding to an opening, then after an anchor rod 2 is placed in a rock drilling hole of a rock, a driving motor 51 is started to enable an output end of the driving motor to drive a driving roller 57 to rotate, further, a push rod 54 is driven to advance under the guiding action of a supporting piece 56, the anchor rod 2 is lifted in the hole, meanwhile, a separating part 3 is also driven to slide on the anchor rod 2, in the process, under the self elastic action of a spring 305, a first separating cylinder 301 and a second separating cylinder 302 keep synchronous sliding at the farthest distance, when two symmetrically arranged first positioning heads 307 on an expansion type rubber water stop ring 303 enter a fault crack, under the self elastic force of a first torsion spring 306, the first positioning heads 307 immediately take a rotating unfolding state, and continuously advance along with the separating part 3, one positioning head 307 can be abutted to a grouting hole port in the fault, along with the continuous pushing of the push rod 54, a positioning head II 312 on the separating cylinder II 302 enters the fault crack, and under the self elastic action of a torsion spring II 311, the positioning head II 312 immediately takes a rotating and unfolding state, meanwhile, the lower end of the Z-shaped positioning head II 312 stirs the abutting rod 313 to rotate clockwise, so that the other end of the abutting rod 313 is abutted into the corresponding limiting clamping groove 309, and the separating cylinder I301 and the separating cylinder II 302 are automatically positioned in the fault crack;

and then, grouting is carried out on the port of the anchor rod 2 through a grout outlet pipe 42 in the grouting mechanism 4, after grouting pressure is provided through a pressure pump 41, grout is filled in a rock body drilled hole through a grout outlet hole in the anchor rod 2, the expansion rubber water stop rings 303 on the two sides of the first partition barrel 301 and the second partition barrel 302 are extruded, sealing is finished at a fault fracture from the rock body drilled hole without irregular round holes, the pressure pump 41 is closed after grouting is finished, after the grout outlet pipe 42 is taken out, the grout stop base plate 21 is tightened through the locking nut 22 to stop the outflow of the grout in the rock body drilled hole, the grout stop plug 23 is tightened to stop the outflow of the grout in the anchor rod 2, and finally the whole rock body drilled hole is filled under the action of a grout medium-speed coagulant and a micro-expanding agent.

Based on the above, the separation part 3 is sleeved on the anchor rod 2, the interval-adjustable first and

second separation cylinders

301 and 302 block the fault cracks in the open hole, so that the flowing diffusion of grout at the position is avoided, the effective grouting of the fault cracks with any interval can be realized, and in the grouting process, the grout is filled in the anchor rod 2, between the anchor rod 2 and the rock drilling hole and between the anchor rod 2 and the separation part 3, so that the required grout consumption is greatly reduced on the premise of ensuring the supporting and strengthening strength;

through set up thrusting mechanism 5 on platform truck 1, under the direction of supporting piece 56, still hold up stock 2 in the rock mass drilling when promoting partition 3 to remove by push rod 54, make trompil inner wall and the play thick liquid mouth of stock 2 lower extreme accomplish the separation, generate appropriate slip casting clearance, make flow state mortar can flow from whole grout outlet effectively, improved slip casting efficiency, the lift of seat 53 that goes up and down simultaneously can also realize carrying out the slip casting to the rock mass drilling of co-altitude not.

It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The geotechnical engineering fault fracture rock body grouting equipment is characterized by comprising a trolley (1), an anchor rod (2), a separating portion (3), a grouting mechanism (4) and a pushing mechanism (5), wherein a slurry storage chamber (6) is arranged inside the trolley (1), the grouting mechanism (4) is installed on the slurry storage chamber (6) and used for injecting mortar into a rock body drilling hole, the pushing mechanism (5) is installed in the trolley (1) and used for adjusting the application height of the anchor rod (2) in a lifting mode, the separating portion (3) is sleeved on the anchor rod (2) and used for avoiding slurry from diffusing at a rock fault fracture, the separating portion (3) comprises a first separating tube (301), a second separating tube (302) and an expansion type rubber water stop ring (303), the first separating tube (301) and the second separating tube (302) are arranged on the anchor rod (2) in a sliding mode, and the expansion type rubber water stop ring (303) are provided with two numbers and fixed on the first separating tube (301) and the second separating tube (302) respectively 302) The two sides of the separating cylinder I (301) are provided with a sliding groove (304), the side end of the separating cylinder II (302) is arranged in the sliding groove (304) in a sliding manner, a spring (305) connected with the side end of the separating cylinder II (302) is arranged in the sliding groove (304), the separating cylinder I (301) is provided with two symmetrically arranged positioning head I (307) through a torsion spring I (306), the separating cylinder I (301) is also provided with an open cavity (308), the upper end of the open cavity (308) is provided with a plurality of uniformly distributed limiting clamping grooves (309), a yielding cavity (310) is arranged in the separating cylinder II (302), the upper end of the yielding cavity (310) is provided with two symmetrically arranged Z-shaped positioning head II (312) through a torsion spring II (311), a resisting rod (313) is hinged to the port of the yielding cavity (310), the other end of the resisting rod (313) is arranged in the open cavity (308), and the pushing mechanism (5) comprises a driving motor (51), The hydraulic lifting platform comprises an air cylinder (52), a lifting seat (53) and a push rod (54), wherein two guide columns (55) which are symmetrically arranged are fixed inside the trolley (1), the lifting seat (53) is arranged on the guide columns (55) in a sliding manner, a supporting piece (56) is fixedly connected to the side end of the lifting seat (53), a driving motor (51) is arranged on the side end of the lifting seat (53), the output end of the driving motor (51) is connected with a driving roller (57), the air cylinder (52) is arranged on the inner bottom wall of the trolley (1), the output end of the air cylinder (52) is connected with the lower end of the lifting seat (53), the push rod (54) is arranged in the supporting piece (56) in a sliding manner, the end face of the push rod (54) abuts against the rim of the driving roller (57), and the outer diameters of a first expansion type separation cylinder (301), a second expansion type separation cylinder (302) and a rubber water stop ring (303) are matched with a rock mass drilled hole, when the first positioning head (307) and the second positioning head (312) are in a rotating and unfolding state, the end parts of the first positioning head and the second positioning head exceed the edge of a rock body drilled hole, when the second positioning head (312) is in a rotating and unfolding state, the lower end of the second positioning head abuts against one end of the abutting rod (313), and the other end of the abutting rod (313) is clamped in the limiting clamping groove (309).

2. The geotechnical engineering fault fractured rock mass grouting equipment as claimed in claim 1, wherein: grouting mechanism (4) include force pump (41), play thick liquid pipe (42) and check valve (43), force pump (41) are installed on the side of storing up thick liquid room (6), it connects in the outside of storing up thick liquid room (6) through slip casting communicating pipe (44) to go out thick liquid pipe (42), check valve (43) set up in the tip position of a thick liquid pipe (42), and the side of check valve (43) is hung on the side of platform truck (1).

3. The geotechnical engineering fault fractured rock mass grouting equipment as claimed in claim 1, wherein: the anchor rod (2) is a hollow anchor rod body, a grout stopping base plate (21) is arranged at the tail part of the anchor rod (2) in a rock drilling hole and is fixed through a locking nut (22), and a grout stopping plug (23) is installed at a port of the tail part of the anchor rod (2).

4. The geotechnical engineering fault fractured rock mass grouting equipment as claimed in claim 1, wherein: the end face of the outer edge of the driving roller (57) is made of rubber, and the driving roller (57) and the end face of the push rod (54) can move relatively.