WO2022007694A1 - 用于高凝结性注浆材料的注浆装置 - Google Patents

用于高凝结性注浆材料的注浆装置 Download PDF

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Publication number
WO2022007694A1
WO2022007694A1 PCT/CN2021/103906 CN2021103906W WO2022007694A1 WO 2022007694 A1 WO2022007694 A1 WO 2022007694A1 CN 2021103906 W CN2021103906 W CN 2021103906W WO 2022007694 A1 WO2022007694 A1 WO 2022007694A1
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WO
WIPO (PCT)
Prior art keywords
grouting
wall
grouting pipe
pipe
head
Prior art date
Application number
PCT/CN2021/103906
Other languages
English (en)
French (fr)
Inventor
杨忠年
刘学森
刘泉维
李克先
黄成�
刘林胜
黄习习
凌贤长
Original Assignee
青岛理工大学
青岛市地铁六号线有限公司
青岛市地铁一号线有限公司
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Filing date
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Application filed by 青岛理工大学, 青岛市地铁六号线有限公司, 青岛市地铁一号线有限公司 filed Critical 青岛理工大学
Priority to US18/014,504 priority Critical patent/US11702936B2/en
Publication of WO2022007694A1 publication Critical patent/WO2022007694A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • F16L37/252—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/008—Branching pipes; Joining pipes to walls for connecting a measuring instrument

Definitions

  • the invention relates to the field of grouting, in particular to a grouting device for grouting materials with high coagulation.
  • the installation is time-consuming and laborious, and it is easy to cause the grouting pipe to be reduced in diameter and damaged.
  • the end of the grouting pipe is reserved for the anchor cable to ensure the smooth flow of the pipeline and prevent impurities from blocking the grouting pipe when the anchor cable is installed.
  • the surface of the slurry is spherical, and there is a pressure loss during the flow of the slurry, resulting in a limited grouting effect.
  • the purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and propose a grouting device for high-coagulation grouting material, which is easy to install, reliable in connection between the grouting pipe and the connecting head and the self-sealing pipe head, and can Repeated use; since the inner diameter of the connecting head is consistent with the inner diameter of the grouting pipe and the grouting outlet on the end cap of the self-sealing pipe head is a circular grouting outlet, the pressure loss during the grouting process is effectively reduced, and the grouting effect is good.
  • the connecting head includes a measuring section, a connecting section, a pressing bolt and a grouting pipe clamp, the measuring section is fixedly located in the middle of the connecting section, and both the measuring section and the connecting section are provided with inner holes, and the inner holes are in a through state, and the connection is There are stepped holes in the section.
  • the stepped holes include large holes and small holes.
  • the hole facing the measuring section is a small hole, and its diameter is the same as that of the inner hole of the measuring section.
  • the hole facing the free end of the connecting section is a large hole.
  • the grouting pipe clamp The hoop reciprocates along its axial direction in the large hole, and two axial transverse sliding grooves I are symmetrically arranged on the pipe wall of the connecting section with the large hole.
  • the transverse sliding groove I runs through the axial direction of the large hole, and the inner wall of the large hole faces One end of the free end of the connecting section is provided with a compression inner thread, the compression inner thread is matched with the outer thread of the compression bolt, and the end of the inner wall of the large hole facing the small hole is provided with a butt section, and the butt section is in contact with the grouting pipe clamp.
  • An annular sliding groove is provided on the docking section;
  • the large hole of the connecting section is sequentially provided with a compression bolt and a grouting pipe clamp from the outside to the inside.
  • the compression bolt includes a bolt head and a screw rod that is fixedly connected with the bolt head.
  • the central hole that communicates with each other, the grouting pipe clamp is arranged in the central hole of the pressing bolt, the outer surface of the screw is provided with a pressing external thread, and the pressing external thread cooperates with the pressing inner thread in the connecting section, and the upper edge of the screw
  • Two sliding slits are arranged symmetrically in the axial direction, and the sliding slits and the transverse sliding grooves 1 are correspondingly arranged and connected with each other up and down.
  • two transverse sliding grooves II are symmetrically arranged in the bolt head, and the transverse sliding grooves II are communicated with the sliding slits;
  • the grouting tube clamp includes an outer wall and an inner tube, the outer wall is cylindrical, the outer wall slides along its axial direction in the central hole of the pressing bolt, the inner tube is arranged in the outer wall, and the diameter of the inner tube is the same as the diameter of the small hole.
  • the inner tube and the outer wall are fixedly connected, and there is a radial gap between the inner tube and the outer wall.
  • the limit sliding protrusions are respectively arranged in the transverse sliding groove II and the transverse sliding groove I, and the limiting sliding protrusions slide back and forth in the transverse sliding groove II and the transverse sliding groove I, and the limiting sliding protrusions move along the annular sliding groove.
  • the side of the outer wall facing the free end of the connecting section is provided with several pressing protrusions, the pressing protrusions are in contact with the ends of the pressing bolts, and the ends of the outer wall are fixed with locking straps, between the two ends of the locking straps Connected by locking bolts;
  • the self-sealing pipe head comprises a grouting pipe sleeve, an end cap, a connecting limit rod and a connecting spring, the grouting pipe sleeve is connected with the connecting head through a grouting pipe, and the grouting pipe is fixedly sleeved on one end of the grouting pipe sleeve, The other end of the grouting pipe sleeve is sleeved in the end cap, the grouting pipe sleeve slides in the end cap, the grouting pipe sleeve and the end cap are connected by a connecting spring, and one end of the connecting limit rod passes through the grouting pipe sleeve Screwed into the end cap, the connecting limit rod is fixedly connected with the end cap, and the other end of the connecting limit rod is provided with a limit mechanism.
  • the outer surface of the grouting pipe sleeve is provided with several deformation grooves, and the deformation grooves are provided with fastening bolts.
  • the measuring section is provided with a flow meter and a pressure sensor, and the flow meter and the pressure sensor are respectively connected to the measuring section through sensor joints.
  • the flow meter is used to measure the flow rate of the high-coagulation grouting material flowing in the connecting section
  • the pressure sensor is used to measure the pressure of the high-coagulation grouting material flowing through the connecting section.
  • the outer diameter of the inner pipe is larger than the inner diameter of the grouting pipe, the extruding sponge is fixed at one end of the outer wall facing the small hole, and the other end of the outer wall is correspondingly fixed with a locking band.
  • the locking and loosening of the locking belt are realized by the locking bolts, and when the locking bolts are locked, the end of the grouting pipe is locked and fixed on the inner pipe. Prevent the grouting pipe from falling out of the grouting pipe clamp when the grouting pressure is too large.
  • the grouting pipe sleeve includes an outer wall of the sleeve and an inner wall of the sleeve, the inner wall of the sleeve is arranged on the inner side of the outer wall of the sleeve, the bottom of the inner wall of the sleeve is fixedly connected with the outer wall of the sleeve, and there is a radial gap between the inner wall of the sleeve and the outer wall of the sleeve to form a grouting port installation groove , One end of the grouting port installation groove is open, and the other end is closed. The pipe wall of the grouting pipe is inserted into the grouting port installation groove from the open end.
  • a reserved limit ring is arranged at the center of the sleeve head, and the reserved limit ring is connected with the inner surface of the inner wall of the sleeve head through several connecting rods arranged at intervals, and the connecting rods connect the reserved limit ring and the inner wall of the sleeve head.
  • the gap is divided into several slurry flow ports.
  • the connecting limit rod passes through the center hole of the reserved limit ring.
  • the side of the reserved limit ring facing the grouting pipe is provided with a limit groove, and the reserved limit ring faces the end cap.
  • One side of the connecting spring is provided with a connecting spring base, one end of the connecting spring is fixedly connected with the connecting spring base, and the other end of the connecting spring is fixedly connected with the end cap.
  • the end cap includes a conical guide cap and a hollow tube, the conical guide cap is fixed at the bottom of the hollow tube, the grouting tube sleeve head is arranged in the hollow tube, the grouting tube sleeve head slides axially in the hollow tube, and the conical guide cap There is a screw hole at the end of the connecting rod, and an external thread is provided at the end of the connecting limit rod.
  • the end of the conical guide cap is also fixed with a plug, and the outer diameter of the plug is the same as the inner diameter of the inner wall of the grouting pipe sleeve. , There are several circular slurry outlets on the tube wall of the hollow tube.
  • One end of the connecting limit rod is provided with a tightening thread, and the tightening thread and the screw hole in the end cap are fixedly connected by a screw thread, and the other end of the connecting limit rod is provided with a limit fin, and the limit fin is connected with the reserved limiter.
  • the limit grooves on the position ring are correspondingly arranged, and the connecting spring is sleeved on the outer side of the connecting limit rod.
  • the opening angle of the annular sliding groove is 90°, occupying a 1/4 circular section, and the rotation direction of the annular sliding groove is opposite to the rotation direction of the pressing inner thread.
  • the grouting pipe clamp By setting the grouting pipe clamp, the grouting pipe clamp can be slid, rotated and fixed in the connecting section, which realizes the firm connection between the connecting head and the grouting pipe, and at the same time ensures the transmission of the grouting pressure;
  • the pipe head has a self-sealing function. On the one hand, it can prevent impurities from entering the grouting pipe during the process of lowering the anchor cable; on the other hand, it can be automatically opened during grouting and automatically closed after grouting is completed, which can be reused. It can also ensure the grouting pressure; it is suitable for grouting of high coagulation grouting materials.
  • Fig. 1 is a structural schematic diagram when the grouting pipe and the connecting head are in an unconnected state
  • Fig. 2 is the structural representation of connecting head connecting section
  • Figure 3 is a schematic structural diagram of a fastening bolt
  • Figure 4 is a schematic structural diagram of a grouting pipe clamp
  • Fig. 5 is the exploded structure schematic diagram of self-sealing pipe head
  • Fig. 6 is the first structural schematic diagram of the grouting pipe sleeve
  • Fig. 7 is the second structural schematic diagram of the grouting pipe sleeve
  • Fig. 8 is the sectional structure schematic diagram of the end cap
  • Fig. 9 is the structural representation of connecting limit rod
  • Figure 10 is a schematic structural diagram when the grouting pipe clamp is connected to the grouting pipe
  • Figure 11 is a schematic structural diagram of the grouting pipe clamp inserted into the connecting section
  • Figure 12 is a schematic structural diagram of the grouting pipe clamp and the connecting section after the compression bolt is tightened
  • Figure 13 is a schematic structural diagram when the grouting pipe and the connecting head are in a connected state
  • Fig. 14 is the sectional structure schematic diagram of self-sealing pipe head
  • Figure 15 is a schematic structural diagram when the self-sealing pipe head and the grouting pipe are in a connected state
  • Figure 16 is a schematic cross-sectional view of the self-sealing pipe head without grouting
  • Fig. 17 is a schematic cross-sectional view of the self-sealing pipe head during the grouting process.
  • 1 measuring section 1 measuring section; 2 connecting section; 2-1 transverse sliding groove I; 2-2 pressing inner thread; 2-3 docking section; 2-4 annular sliding groove; 3 sensor joint; 4 flowmeter; 5 Pressure sensor; 6 pressing bolts; 6-1 pressing external threads; 6-2 lateral sliding groove II; 6-3 sliding slits; 6-4 bolt heads; 6-5 screw rods; 7 grouting pipe clamps; 7 -1 outer wall; 7-2 inner tube; 7-3 squeeze sponge; 7-4 limit sliding protrusion; 7-5 pressing protrusion; 7-6 tightening belt; 8 grouting pipe; 9 grouting pipe Sleeve head; 9-1 Grouting port installation groove; 9-2 Deformation groove; 9-3 Fastening bolt; 9-4 Reserved limit ring; 9-5 Slurry flow port; 9-6 Limit groove; 9- 7 connecting spring base; 10 end cap; 10-1 conical guide cap; 10-2 hollow tube; 10-3 circular slurry outlet; 10-4 screw hole; 10-5 plug; 11 connection limit Rod; 11-1 limit fin; 11-2 screw thread; 12 connection spring.
  • the grouting device for high-coagulation grouting material includes a grouting pipe 8, a connecting head and a self-sealing pipe head.
  • One end of the connecting head is connected to the grouting pump through the grouting pipe 8.
  • Connection, the other end of the connector is connected with the self-sealing pipe head through the grouting pipe.
  • the grouting pipe 8 and the connecting head and the self-sealing pipe head are all fixed and sealed.
  • the high-coagulation grouting material extracted by the grouting pump flows into the connecting head through the grouting pipe, and then flows into the self-sealing pipe head through the grouting pipe. .
  • the grouting device is used for high-coagulation grouting material, that is to say, the grouting material has strong coagulation and fast coagulation.
  • the present invention adopts a segmented grouting pipe. Rigid PVC pipe with diameter of 32mm and length of 3-5m.
  • the connecting head includes a measuring section 1, a connecting section 2, a pressing bolt 6 and a grouting pipe clamp 7.
  • the measuring section 1 is fixed in the middle of the connecting section 2, that is, the left and right sides of the measuring section 1 are respectively fixed and connected with connecting sections. 2.
  • Both the measuring section 1 and the connecting section 2 are provided with inner holes with the same diameter, and the inner holes are in a through state, so as to facilitate the passage of the high-coagulation grouting material.
  • the connection is fixed by welding.
  • the measurement section 1 is provided with a flow meter 4 and a pressure sensor 5. The flow meter 4 and the pressure sensor 5 are respectively connected to the measurement section 1 through the sensor joint 3.
  • the flow meter 4 is used to measure the high-condensation liquid flowing in the connection section 2.
  • the flow rate of the grouting material, the pressure sensor 5 is used to measure the pressure of the high-coagulation grouting material flowing in the connecting section 2 .
  • the changes of the grouting pressure and the grouting flow at each connection section are detected, and data support is provided for the preferred grouting parameters.
  • the stepped hole includes a large hole and a small hole.
  • the hole facing the measuring section 1 is a small hole, and its diameter is the same as that of the inner hole of the measuring section 1, and the hole facing the free end of the connecting section 2 is a small hole.
  • the large hole that is, the hole diameter toward the measuring section 1 is smaller than the hole diameter toward the free end of the connecting section 2, and the grouting pipe clamp 7 can reciprocate along its axial direction in the large hole.
  • Two axial transverse sliding grooves I2-1 are symmetrically arranged on the pipe wall of the connecting section 2 with the large hole. The transverse sliding groove I2-1 extends from one end of the large hole to the other end of the large hole, and runs through the shaft of the large hole.
  • One end of the inner wall of the large hole facing the free end of the connecting section is provided with a compression inner thread 2-2, and the compression inner thread 2-2 is matched with the outer thread of the compression bolt.
  • One end of the inner wall of the large hole facing the small hole is provided with a docking section 2-3, the docking section 2-3 is in contact with the grouting pipe clamp 7, and a circular sliding groove 2-4 is arranged on the docking section 2-3 to ensure rotation. Locking angle, the opening angle of the annular sliding groove 2-4 is 90°, occupying a 1/4 circular section, and the rotation direction of the annular sliding groove 2-4 is opposite to the rotation direction of the compression inner thread 2-2, thereby realizing Reverse rotation of the grouting pipe clamp 7 in the connecting section 2 .
  • the large hole of the connecting section 2 is provided with a pressing bolt 6 and a grouting pipe clamp 7 in turn from outside to inside.
  • the pressing bolt 6 includes a bolt head 6-4 and is fixedly connected to the bolt head.
  • the screw 6-5, the screw 6-5 and the bolt head 6-4 are provided with a central hole communicating with each other, and the grouting pipe clamp 7 is arranged in the central hole of the pressing bolt 6.
  • the outer surface of the screw 6-5 is provided with a pressing external thread 6-1, and the pressing external thread 6-1 cooperates with the pressing internal thread 2-2 in the connecting section 2 to realize the tightening of the pressing bolt in the connecting section. .
  • Two sliding slits 6-3 are symmetrically arranged on the screw 6-5 along its axial direction, and the sliding slits 6-3 are correspondingly arranged with the transverse sliding groove I2-1 and communicate with each other up and down.
  • two transverse sliding grooves II6-2 are symmetrically arranged in the bolt head 6-4, and the transverse sliding grooves II6-2 are connected with the sliding slits 6-3 to provide axial sliding space for the grouting pipe clamp 7.
  • the grouting pipe clamp 7 is arranged in the pressing bolt 6 and adopts a double-layer structure.
  • the grouting pipe clamp 7 includes an outer wall 7-1 and an inner pipe 7-2, and the outer wall 7-1 is cylindrical
  • the outer wall 7-1 can slide along its axial direction in the central hole of the pressing bolt 6, the inner tube 7-2 is arranged in the outer wall 7-1, and the diameter of the inner tube 7-2 is the same as that of the small hole, Thereby, the transmission of grouting pressure is ensured, the inner pipe 7-2 is fixedly connected with the outer wall 7-1, and there is a radial gap between the inner pipe 7-2 and the outer wall 7-1, and the pipe wall of the grouting pipe 8 is arranged on the outer wall 7-1.
  • the outer diameter of the inner pipe 7-2 is slightly larger than the inner diameter of the grouting pipe.
  • the inner pipe 7-2 The end of the grouting pipe 8 is enlarged, so that the grouting pipe can be fixedly sleeved on the inner pipe 7-2.
  • One end of the outer wall 7-1 facing the small hole is fixed with a squeeze sponge 7-3, and correspondingly, the other end of the outer wall 7-1 is fixed with a locking band 7-6.
  • the contact between the grouting pipe clamp 7 and the butt section is buffered, and at the same time, squeezing the sponge 7-3 helps to block the gap between the grouting pipe clamp 7 and the butt section, preventing the outflow of slurry.
  • the two ends of the locking belt 7-6 are connected by the locking bolt 7-7, and the locking and loosening of the locking belt 7-6 are realized by the locking bolt 7-7.
  • the locking bolt 7-7 is locked , the end of the grouting pipe 8 is locked and fixed on the inner pipe 7-2. To prevent the grouting pipe 8 from coming out of the grouting pipe clamp 7 when the grouting pressure is too large.
  • the side of the outer wall 7-1 facing the small hole is symmetrically provided with two limit sliding protrusions 7-4, and the limit sliding protrusions 7-4 are respectively arranged in the lateral sliding groove II6-2 and the lateral sliding groove I2-1, and are limited to The position sliding protrusion 7-4 can slide back and forth in the lateral sliding groove II6-2 and the lateral sliding groove I2-1, thereby realizing the axial movement of the grouting pipe clamp 7.
  • the limit sliding protrusion 7-4 slides to the annular sliding groove 2-4, rotate the grouting pipe clamp 7, the limit sliding protrusion 7-4 rotates into the annular sliding groove 2-4, and the limit sliding The protrusion 7-4 can slide in the annular sliding groove 2-4, so as to lock the position of the grouting pipe clamp 7 and prevent the grouting pipe clamp 7 from coming out of the connecting section 2.
  • the outer wall 7-1 is provided with a pressing protrusion 7-5.
  • the pressing protrusion 7-5 is located on the side of the sliding protrusion 7-4 facing the free end of the connecting section, and is spaced along the annular outer surface of the outer wall 7-1.
  • two pressing projections 7-5 are symmetrically arranged on the annular outer surface of the outer wall 7-1, the pressing projections 7-5 and the end of the pressing bolt 6
  • the grouting pipe clamp 7 is in the process of rotating and locking in the connecting section 2, and the pressing bolt 6 and the pressing protrusion are in contact with each other. 7-5 contact, and press the grouting pipe clamp 7 through the force exerted by the pressing bolt 6, so that it can withstand the grouting pressure.
  • the grouting pipe clamp 7 When assembling the connector, firstly, the grouting pipe clamp 7 is installed. As shown in Figure 10, the end of the grouting 8 is softened by scalding with hot water, and then sleeved into the gap between the outer wall of 7-1 and the inner pipe of 7-2. Since the outer diameter of the inner pipe of 7-2 is larger than that of the The inner diameter of the grouting pipe, so the grouting pipe is sleeved into the inner pipe 7-2 to form an enlarged section; after cooling, adjust the locking bolts 7-7, shrink the tightening belt 7-6 and compress the grouting pipe 8 to prevent grouting Tube 8 comes out.
  • both ends of the connecting section 2 are connected to the grouting pipe 8, and the grouting pipe clamp 7 and the grouting pipe 8 are installed at all the joints connected to the grouting pipe according to the above steps, so as to realize the grouting Multiple reuse of pipe clamps 7 and grouting pipes 8.
  • the grouting pipe and the connecting section 2 are connected.
  • the transverse sliding grooves I2-1 are connected to each other. Slide the limit sliding protrusion 7-4 on the grouting pipe clamp 7 into the docking section 2-3 along the lateral sliding groove II 6-2 and the sliding slit 6-3, as shown in Figure 12, and reverse the direction after reaching the designated position.
  • the flowmeter 4 and the pressure sensor 5 are installed on the sensor joint 3 of the measuring section 1 .
  • the installation density of the instrument can be reduced. It is enough to install 3 sensor groups in one grouting pipeline, and the connection form without sensor joint 3 can also be used at the connection head.
  • the self-sealing pipe head includes a grouting pipe sleeve 9, an end cap 10, a connecting limit rod 11 and a connecting spring 12.
  • the grouting pipe sleeve 9 is connected to the connecting head through a grouting pipe 8, and the grouting pipe 8
  • the fixed sleeve is connected to one end of the grouting pipe sleeve 9, and the other end of the grouting pipe sleeve 9 is sleeved in the end cap 10.
  • the grouting pipe sleeve 9 and the end cap 10 are connected by a connecting spring 12 and a limit rod 11.
  • One end of the connecting rod 11 passes through the grouting pipe sleeve 9 and is screwed into the end cap 10 to realize the fixed connection between the connecting limit rod 11 and the end cap 10.
  • the other end of the connecting limit rod 11 is provided with a limit mechanism to prevent the end cap 10 When it comes out, the connecting spring 12 is sleeved on the outside of the connecting limit rod 11 .
  • the outer diameter of the inner wall of the sleeve head is larger than the inner diameter of the grouting pipe 8. Therefore, when the grouting pipe is inserted into the outer side of the inner wall of the sleeve head, the end of the grouting pipe 8 forms an enlarged section, which is convenient for fixing the grouting pipe to the injection pipe.
  • the slurry tube sleeve 9. There are several deformation grooves 9-2 on the outer wall of the sleeve head, and fastening bolts are arranged at the deformation grooves 9-2. The size of the inner diameter becomes smaller, so that the grouting pipe is pressed against the inner wall of the socket head, so as to prevent the grouting pipe from falling out of the grouting pipe socket head under large grouting pressure.
  • the outer wall of the socket head is provided with four deformation grooves 9-2, wherein two deformation grooves 9-2 are provided with fastening bolts.
  • a reserved limit ring 9-4 is arranged at the central position in the grouting pipe sleeve 9, and the reserved limit ring 9-4 is connected with the inner surface of the inner wall of the sleeve through several connecting rods arranged at intervals, and the connecting rods connect the
  • the gap between the reserved limit ring 9-4 and the inner wall of the sleeve head is divided into several slurry flow ports 9-5, and the high-coagulation grouting material flows into the space between the grouting pipe sleeve head 9 and the end cap 10 along the slurry flow port 9-5. between.
  • the connecting limit rod 11 passes through the central hole of the reserved limit ring 9-4.
  • the side of the reserved limit ring 9-4 facing the grouting pipe is provided with a limit groove 9-6, and the limit groove 9-6 is set corresponding to the limit mechanism on the limit rod 11 to prevent the limit during the grouting process.
  • the lever 11 rotates.
  • One side of the reserved limit ring 9-4 facing the end cap 10 is provided with a connecting spring base 9-7, one end of the connecting spring 12 is fixedly connected to the connecting spring base 9-7 by welding, and the other end of the connecting spring 12 is The end cap 10 is fixedly attached.
  • the end cap 10 includes a conical guide cap 10-1 and a hollow tube 10-2, the conical guide cap 10-1 is fixed at the bottom of the hollow tube 10-2, and the grouting tube sleeve 9 is arranged at the bottom of the hollow tube 10-2. Inside the hollow tube 10-2, the grouting tube sleeve 9 can slide axially in the hollow tube 10-2.
  • the end of the conical guide cap 10 - 1 is provided with a screw hole 10 - 4
  • the end of the connecting limit rod 11 is correspondingly provided with an external thread, so as to realize the fixed connection between the end cap 10 and the connecting limit rod 11 .
  • the end of the conical guide cap 10-1 is also fixed with a plug 10-5.
  • the outer diameter of the plug 10-5 is the same as the inner diameter of the inner wall of the grouting pipe sleeve 9. In the case of no grouting, the plug 10 -5 Block the end of the grouting pipe sleeve 9 to prevent debris from entering.
  • the hollow pipe 10-2 is provided with several circular slurry outlets 10-3, and the slurry is discharged along the circular slurry outlet 10-3, thereby realizing grouting.
  • the grouting surface of the circular grouting outlet presents a cylindrical shape as a whole, which improves the grouting effect.
  • one end of the grouting pipe sleeve 9 is connected to the cone
  • the end of the shape guide cap is in contact, and the self-sealing tube head is in a closed and closed state at this time.
  • the grouting pipe 8 is sleeved into the grouting port installation groove 9-1, and the fastening bolts 9- 3. Lock the tube wall to prevent the self-sealing tube head from coming out.
  • the slurry flows into the grouting pipe sleeve 9 and the end cap 10 along the slurry flow port 9-5, and the end cap 10 overcomes the connecting spring 12 under the impact of the grouting pressure.
  • the grouting pipe sleeve 9 and the end cap 10 slide down relative to each other, the circular slurry outlet 10-3 on the end cap 10 is exposed, and the slurry leaks out along the circular slurry outlet 10-3 , so that the slurry is injected in a columnar shape, and the grouting effect is improved.
  • the grouting process for realizing the high-coagulation grouting material by using the grouting device is as follows: First, the assembly of the connecting head and the self-sealing pipe head is completed. Then, a section of grouting pipe 8 is connected with the grouting pipe clamp 7, so that the grouting pump and the connecting section 2 are connected through this section of grouting pipe 8; another section of grouting pipe 8 is connected with the grouting pipe sleeve 9 , first lower the anchor cable, and then connect the connecting section 2 and the grouting pipe sleeve 9 through the grouting pipe 8 of this section, at this time the entire grouting pipeline is installed. After that, the grouting action is performed. The high-coagulation grouting material is pumped into the connecting head through the grouting pipe 8 through the grouting pump.
  • the flow and pressure of the slurry are measured in the connecting head.
  • the slurry follows the grouting pipe 8.
  • the end cap 10 overcomes the pulling force of the connecting spring and slides downward, and leaks out from the circular slurry outlet 10-3, so that the slurry is injected in a columnar shape and improves the injection rate. pulp effect.
  • wash the pipe If the construction interval is long, the grouting pipeline should be split, cleaned, sealed and stored, waiting for the next grouting construction.

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Abstract

本发明涉及注浆领域，特别是一种用于高凝结性注浆材料的注浆装置。包括注浆管、连接头和自封式管头，连接头的一端通过注浆管与注浆泵连接，连接头的另一端通过注浆管与自封式管头连接，注浆管与连接头、自封式管头之间均为固定密封连接。其安装方便，注浆管与连接头、自封式管头连接可靠，能够重复使用；由于连接头的内径与注浆管内径保持一致且自封管头端帽上的出浆口为圆形出浆口，有效地减少了注浆过程中的压力损失，注浆效果好。

Description

用于高凝结性注浆材料的注浆装置 技术领域
本发明涉及注浆领域，特别是一种用于高凝结性注浆材料的注浆装置。
背景技术
随着注浆技术的发展，新型高凝结性注浆材料不断应用于锚索施工，而新型材料具有粘度大、流动差稍差、凝结速度快的问题，注浆后若不及时清理，很容易堵塞管路，影响注浆效果。采用一段式注浆管路，很难保证清洗效果，因此建议采用分段式管路，每段长度为4-5m。分段式管路的接头位置目前常用两种连接方式，一种为套管连接，铁丝绑扎，在注浆压力大时很难保证效果；另一种为商用连接头连接，能有效保证连接效果，但安装费时、费力，容易造成注浆管变径、损坏。在锚索预留注浆管的端头为保证管路畅通，防止安设锚索时杂质堵塞注浆管，管头一般利用胶带封口，在注浆时依靠注浆压力冲开胶带，不能重复利用，另外，在利用注浆管注浆时，浆液面为球状，且在浆液流动过程中存在压力损失，造成注浆效果有限。
发明内容
本发明的目的在于克服现有技术存在的上述缺陷，提出了一种用于高凝结性注浆材料的注浆装置，其安装方便，注浆管与连接头、自封式管头连接可靠，能够重复使用；由于连接头的内径与注浆管内径保持一致且自封管头端帽上的出浆口为圆形出浆口，有效地减少了注浆过程中的压力损失，注浆效果好。
本发明的技术方案是：一种用于高凝结性注浆材料的注浆装置，其中，包括注浆管、连接头和自封式管头，连接头的一端通过注浆管与注浆泵连接，连接头的另一端通过注浆管与自封式管头连接，注浆管与连接头、自封式管头之间均为固定密封连接；
所述连接头包括测量段、连接段、压紧螺栓和注浆管卡箍，测量段固定位于连接段的中部，测量段和连接段内均设有内孔，且内孔呈贯通状态，连接段内设有阶梯孔，阶梯孔包括大孔和小孔，朝向测量段的孔为小孔，其孔径与测量段的内孔孔径相同，朝向连接段自由端的孔为大孔，注浆管卡箍在大孔内沿其轴向往复运动，在设有大孔的连接段管壁上对称设置两条轴向的横向滑动槽Ⅰ，横向滑动槽Ⅰ贯穿大孔的轴向，大孔内壁朝向连接段自由端的一端设有压紧内螺纹，压紧内螺纹与压紧螺栓的外螺纹相配合，大孔内壁朝向小孔的一端设有对接段，对接段与注浆管卡箍接触，在对接段上设有环形滑动槽；
所述连接段的大孔内由外至内依次设有压紧螺栓和注浆管卡箍，压紧螺栓包括螺栓头部和与螺栓头部固定连接的螺杆，螺杆和螺栓头部内设有相互连通的中心孔，注浆管卡箍设置 在压紧螺栓的中心孔内，螺杆的外表面设有压紧外螺纹，压紧外螺纹与连接段内的压紧内螺纹配合，螺杆上沿其轴向对称设置两条滑动缝，滑动缝与横向滑动槽1对应设置且上下相互连通，对应的在螺栓头部内对称设置两个横向滑动槽Ⅱ，横向滑动槽Ⅱ与滑动缝连通；
所述注浆管卡箍包括外壁和内管，外壁呈圆筒状，外壁在压紧螺栓的中心孔内沿其轴向滑动，内管设置在外壁内，内管的管径与小孔孔径相同，内管与外壁固定连接，且内管与外壁之间存在径向间隙，注浆管的管壁设置在外壁与内管之间，外壁朝向小孔的一侧对称设置两限位滑动凸起，限位滑动凸起分别设置在横向滑动槽Ⅱ和横向滑动槽Ⅰ内，且限位滑动凸起在横向滑动槽Ⅱ和横向滑动槽Ⅰ内往复滑动，限位滑动凸起沿环形滑动槽转动，外壁上朝向连接段自由端的一侧设有数个压紧凸起，压紧凸起与压紧螺栓的端部接触，外壁的端部固定有锁紧带，锁紧带的两端之间通过锁紧螺栓连接；
所述自封式管头包括注浆管套头、端帽、连接限位杆和连接弹簧，注浆管套头通过注浆管与连接头连接，注浆管固定套接在注浆管套头的一端，注浆管套头的另一端套设在端帽内，注浆管套头在端帽内滑动，注浆管套头与端帽之间通过连接弹簧连接，连接限位杆的一端穿过注浆管套头旋入端帽内，连接限位杆与端帽固定连接，连接限位杆的另一端设有限位机构。注浆管套头的外表面设有数个变形槽，变形槽处设有紧固螺栓。
本发明中，所述测量段上设有流量计和压力传感器，流量计、压力传感器分别通过传感器接头与测量段连接。流量计用于测量连接段内流过的高凝结性注浆材料的流量，压力传感器用于测量连接段内流过的高凝结性注浆材料的压力。通过流量计和压力传感器，检测每个连接段处的注浆压力和浆液流量的变化，为优选注浆参数提供数据支持。
所述内管的外径大于注浆管的内径，外壁朝向小孔的一端固定有挤压海绵，对应的在外壁的另一端固定有锁紧带。通过锁紧螺栓实现锁紧带的锁紧和放松，锁紧螺栓锁紧时，实现了将注浆管的端部锁紧固定在内管上。防止注浆压力过大时，注浆管从注浆管卡箍内脱出。
所述注浆管套头包括套头外壁和套头内壁，套头内壁设置在套头外壁的内侧，套头内壁的底部与套头外壁固定连接，套头内壁与套头外壁之间存在径向间隙，形成注浆口安装槽，注浆口安装槽的一端呈开口状，另一端呈封闭状，注浆管的管壁从开口端***注浆口安装槽内，套头内壁的外径大于注浆管的内径，注浆管套头内的中心位置处设有预留限位环，预留限位环与套头内壁的内表面之间通过数个间隔设置的连接杆连接，连接杆将预留限位环与套头内壁之间的间隙分为数个浆液流动口，连接限位杆穿过预留限位环的中心孔，预留限位环朝向注浆管的一侧设有限位凹槽，预留限位环朝向端帽的一侧面设有连接弹簧基座，连接弹簧的一端与连接弹簧基座固定连接，连接弹簧的另一端与端帽固定连接。
所述端帽包括锥形导向帽和中空管，锥形导向帽固定在中空管的底部，注浆管套头设置 在中空管内，注浆管套头在中空管内轴向滑动，锥形导向帽的端部设有螺孔，对应的在连接限位杆的端部设有外螺纹，锥形导向帽的端部还固定有堵头，堵头的外部直径与注浆管套头内壁的内径相同，中空管的管壁上设有数个圆形出浆口。
所述连接限位杆的一端设有旋紧螺纹，旋紧螺纹与端帽内的螺孔之间通过螺纹固定连接，连接限位杆的另一端设有限位翅，限位翅与预留限位环上的限位凹槽对应设置，连接弹簧套在连接限位杆的外侧。
所述为保证旋转锁定角度，环向滑动槽的开设角度为90°，占据1/4圆截面，环形滑动槽的旋向与压紧内螺纹的旋向相反。
本发明的有益效果是：
(1)通过设置注浆管卡箍，注浆管卡箍可以在连接段内滑动、旋转、固定，实现了连接头与注浆管的牢固连接，同时保证注浆压力的传递；
(2)通过设置注浆管套头，实现了自封式管头与注浆管的牢固连接，同时保证注浆压力的传递；
(3)通过将自封式管头端帽上的注浆口设置为圆形注浆口，且接口的内径与注浆管的内径保持一致，减少了浆液在流动过程中的压力损失；
(4)管头具有自封闭功能，一方面能防止在下放锚索过程中杂质进入注浆管内部；另一方面能在注浆时自动开启，注浆完成后自动封闭，既可以重复利用，又可以保证注浆压力；适用于高凝结性注浆材料的注浆。
附图说明
图1是注浆管与连接头之间呈未连接状态时的结构示意图；
图2是连接头连接段的结构示意图；
图3是紧固螺栓的结构示意图；
图4是注浆管卡箍的结构示意图；
图5是自封式管头的***结构示意图；
图6是注浆管套头的第一结构示意图；
图7是注浆管套头的第二结构示意图；
图8是端帽的剖视结构示意图；
图9是连接限位杆的结构示意图；
图10是注浆管卡箍与注浆管连接时的结构示意图；
图11是注浆管卡箍***连接段的结构示意图；
图12是压紧螺栓旋紧后注浆管卡箍与连接段的结构示意图；
图13是注浆管与连接头之间呈连接状态时的结构示意图；
图14是自封式管头的剖视结构示意图；
图15是自封式管头与注浆管之间呈连接状态时的结构示意图；
图16是自封式管头未注浆的剖视结构示意图；
图17是自封式管头注浆过程中的剖视结构示意图。
图中：1测量段；2连接段；2-1横向滑动槽Ⅰ；2-2压紧内螺纹；2-3对接段；2-4环向滑动槽；3传感器接头；4流量计；5压力传感器；6压紧螺栓；6-1压紧外螺纹；6-2横向滑动槽Ⅱ；6-3滑动缝；6-4螺栓头部；6-5螺杆；7注浆管卡箍；7-1外壁；7-2内管；7-3挤压海绵；7-4限位滑动凸起；7-5压紧凸起；7-6缩紧带；8注浆管；9注浆管套头；9-1注浆口安装槽；9-2变形槽；9-3紧固螺栓；9-4预留限位环；9-5浆液流动口；9-6限位凹槽；9-7连接弹簧基座；10端帽；10-1锥形导向帽；10-2中空管；10-3圆形出浆口；10-4螺孔；10-5堵头；11连接限位杆；11-1限位翅；11-2旋紧螺纹；12连接弹簧。
具体实施方式
为了使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。
在以下描述中阐述了具体细节以便于充分理解本发明。但是本发明能够以多种不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似推广。因此本发明不受下面公开的具体实施方式的限制。
如图1所示，本发明所述的用于高凝结性注浆材料的注浆装置包括注浆管8、连接头和自封式管头，连接头的一端通过注浆管8与注浆泵连接，连接头的另一端通过注浆管与自封式管头连接。注浆管8与连接头、自封式管头之间均为固定密封连接。注浆泵抽出的高凝结性注浆材料通过注浆管流入连接头内，再通过注浆管流入自封式管头内，高凝结性材料从自封式管头注入钻孔内，实现锚索施工。由于该注浆装置用于高凝结性注浆材料，也就是说该注浆材料凝结性较强，凝结很快，为了方便清洗，本发明采用分段式注浆管，本实施例中，采用直径为32mm，长度为3-5m的硬质PVC管。
连接头包括测量段1、连接段2、压紧螺栓6和注浆管卡箍7，测量段1固定位于连接段2的中部，即测量段1的左、右两侧面分别固定连接有连接段2，测量段1和连接段2内均设有直径相同的内孔，且内孔呈贯通状态，以便于高凝结性注浆材料的通过，本实施例中测量段1与连接段2之间通过焊接方式固定连接。测量段1上设有流量计4和压力传感器5，流量计4、压力传感器5分别通过传感器接头3与测量段1连接，其中流量计4用于测量连接段2内流过的高凝结性注浆材料的流量，压力传感器5用于测量连接段2内流过的高凝结性 注浆材料的压力。通过流量计4和压力传感器5，检测每个连接段处的注浆压力和浆液流量的变化，为优选注浆参数提供数据支持。
连接段2内设有阶梯孔，阶梯孔包括大孔和小孔，其中，朝向测量段1的孔为小孔，其孔径与测量段1的内孔孔径相同，朝向连接段2自由端的孔为大孔，即朝向测量段1的孔径小于朝向连接段2自由端的孔径，注浆管卡箍7可以在大孔内沿其轴向往复运动。在设有大孔的连接段2管壁上对称设置两条轴向的横向滑动槽Ⅰ2-1，横向滑动槽Ⅰ2-1从大孔的一端延伸至大孔的另一端，贯穿大孔的轴向。大孔内壁朝向连接段自由端的一端设有压紧内螺纹2-2，压紧内螺纹2-2与压紧螺栓的外螺纹相配合。大孔内壁朝向小孔的一端设有对接段2-3，对接段2-3与注浆管卡箍7接触，在对接段2-3上设有环向滑动槽2-4，为保证旋转锁定角度，环向滑动槽2-4的开设角度为90°，占据1/4圆截面，环向滑动槽2-4的旋向与压紧内螺纹2-2的旋向相反，从而实现了注浆管卡箍7在连接段2内的反向旋转。
连接段2的大孔内由外至内依次设有压紧螺栓6和注浆管卡箍7，如图3所示，压紧螺栓6包括螺栓头部6-4和与螺栓头部固定连接的螺杆6-5，螺杆6-5和螺栓头部6-4内设有相互连通的中心孔，注浆管卡箍7设置在压紧螺栓6的中心孔内。螺杆6-5的外表面设有压紧外螺纹6-1，压紧外螺纹6-1与连接段2内的压紧内螺纹2-2配合，实现压紧螺栓在连接段内的旋紧。螺杆6-5上沿其轴向对称设置两条滑动缝6-3，滑动缝6-3与横向滑动槽Ⅰ2-1对应设置且上下相互连通。对应的在螺栓头部6-4内对称设置两个横向滑动槽Ⅱ6-2，横向滑动槽Ⅱ6-2与滑动缝6-3连接，为注浆管卡箍7提供轴向滑动的空间。
注浆管卡箍7设置在压紧螺栓6内，采用双层结构，如图4所示，注浆管卡箍7包括外壁7-1和内管7-2，外壁7-1呈圆筒状，外壁7-1可以在压紧螺栓6的中心孔内沿其轴向滑动，内管7-2设置在外壁7-1内，内管7-2的管径与小孔的孔径相同，从而保证注浆压力的传递，内管7-2与外壁7-1固定连接，且内管7-2与外壁7-1之间存在径向间隙，注浆管8的管壁设置在外壁7-1与内管7-2之间，内管7-2的外径略大于注浆管的内径，当注浆管***外壁7-1与内管7-2之间，内管7-2对注浆管8的端部起到了膨大作用，从而便于将注浆管固定套在内管7-2上。外壁7-1朝向小孔的一端固定有挤压海绵7-3，对应的在外壁7-1的另一端固定有锁紧带7-6。通过挤压海绵7-3缓冲注浆管卡箍7与对接段的接触，同时挤压海绵7-3有助于堵塞注浆管卡箍7与对接段之间的缝隙，防止浆液流出。锁紧带7-6的两端之间通过锁紧螺栓7-7连接，并通过锁紧螺栓7-7实现锁紧带7-6的锁紧和放松，锁紧螺栓7-7锁紧时，实现了将注浆管8的端部锁紧固定在内管7-2上。防止注浆压力过大时，注浆管8从注浆管卡箍7内脱出。
外壁7-1朝向小孔的一侧对称设置两限位滑动凸起7-4，限位滑动凸起7-4分别设置在 横向滑动槽Ⅱ6-2和横向滑动槽Ⅰ2-1内，且限位滑动凸起7-4可以在横向滑动槽Ⅱ6-2和横向滑动槽Ⅰ2-1内往复滑动，从而实现了注浆管卡箍7的轴向移动。当限位滑动凸起7-4滑动至环向滑动槽2-4时，转动注浆管卡箍7，限位滑动凸起7-4转动至环向滑动槽2-4内，限位滑动凸起7-4可以在环向滑动槽2-4内滑动，从而锁住注浆管卡箍7的位置，防止注浆管卡箍7从连接段2内脱出。
同时外壁7-1上设有压紧凸起7-5，压紧凸起7-5位于滑动凸起7-4朝向连接段自由端的一侧，沿外壁7-1的环形外表面上间隔设置数个压紧凸起7-5，本实施例中，外壁7-1的环形外表面上对称设置两个压紧凸起7-5，压紧凸起7-5与压紧螺栓6的端部接触，压紧凸起7-5为压紧螺栓作用于注浆管卡箍的主要着力点，注浆管卡箍7在连接段2内旋转锁定过程中，压紧螺栓6与压紧凸起7-5接触，并通过压紧螺栓6施加的作用力压紧注浆管卡箍7，使其能够承受注浆压力。
在对连接头进行组装时，首先进行注浆管卡箍7的安装。如图10所示，将注浆8的端部用热水浇烫软化，然后套入7-1外壁与7-2内管之间的间隙中，由于7-2内管的外径大于注浆管的内径，因此注浆管套入内管7-2后形成膨大段；冷却后调整锁紧螺栓7-7，缩小缩紧带7-6的同时将注浆管8压紧，防止注浆管8脱出。本发明中，连接段2的两端均与注浆管8连接，在所有的与注浆管连接的接头处均按照以上步骤安装注浆管卡箍7和注浆管8，实现了注浆管卡箍7和注浆管8的多次重复利用。
安装好注浆管卡箍7后，进行注浆管和连接段2的连接。如图11所示，首先将压紧螺栓6旋入连接段2，调整压紧螺栓6的位置，使压紧螺栓6上的横向滑动槽Ⅱ6-2和滑动缝6-3与连接段2上的横向滑动槽Ⅰ2-1相贯通。将注浆管卡箍7上的限位滑动凸起7-4沿横向滑动槽Ⅱ6-2和滑动缝6-3滑入对接段2-3，如图12所示，在到达指定位置后逆时针转动注浆管8或顺时针转动连接段2，使限位滑动凸起7-4滑入环向滑动槽2-4内部，从而锁定注浆管8，防止注浆管8脱出。最后旋紧压紧螺栓6，使压紧螺栓6的端部紧压限位突出7-5，使注浆管卡箍7端部的挤压海绵7-3与连接段2之间保持密封接触，至此单侧注浆管连接完成，重复以上步骤，直至连接段的两端分别与注浆管连接，拆卸时，仅需要将以上步骤反向实施即可。
如图13所示，注浆管8与连接段2连接完毕后，将流量计4、压力传感器5安装至测量段1的传感器接头3上。在实际生产中可减少仪器安装密度，一条注浆管路安装3个传感器组即可，连接头处也可以采用未设传感器接头3的连接形式。
如图5所示，自封式管头包括注浆管套头9、端帽10、连接限位杆11和连接弹簧12，注浆管套头9通过注浆管8与连接头连接，注浆管8固定套接在注浆管套头9的一端，注浆 管套头9的另一端套设在端帽10内，注浆管套头9与端帽10之间通过连接弹簧12连接，连接限位杆11的一端穿过注浆管套头9，并旋入端帽10内，实现了连接限位杆11与端帽10的固定连接，连接限位杆11的另一端设有限位机构，防止端帽10脱出，连接弹簧12套在连接限位杆11的外侧。
如图6所示，注浆管套头9包括套头外壁和套头内壁，套头内壁设置在套头外壁的内侧，套头内壁的底部与套头外壁固定连接，套头内壁与套头外壁之间存在径向间隙，从而形成注浆口安装槽9-1，注浆口安装槽9-1的一端呈开口状，另一端呈封闭状，注浆管8的管壁从开口端***注浆口安装槽9-1内。本发明中，套头内壁的外径大于注浆管8的内径，因此当注浆管***套头内壁的外侧时，使注浆管8的端部形成膨大段，便于将注浆管固定套在注浆管套头9上。套头外壁上设有数个变形槽9-2，变形槽9-2处设有紧固螺栓，注浆管套入注浆口安装槽9-1内后，旋紧紧固螺栓，使套头外壁的内径尺寸变小，从而将注浆管压紧在套头内壁上，防止在较大注浆压力下，注浆管从注浆管套头内脱出。本实施例中，套头外壁设有四个变形槽9-2，其中两个变形槽9-2处设有紧固螺栓。
注浆管套头9内的中心位置处设有预留限位环9-4，预留限位环9-4与套头内壁的内表面之间通过数个间隔设置的连接杆连接，连接杆将预留限位环9-4与套头内壁之间的间隙分为数个浆液流动口9-5，高凝结性注浆材料沿着浆液流动口9-5流入注浆管套头9和端帽10之间。连接限位杆11穿过预留限位环9-4的中心孔。预留限位环9-4朝向注浆管的一侧设有限位凹槽9-6，限位凹槽9-6与限位杆11上的限位机构对应设置，防止注浆过程中限位杆11转动。预留限位环9-4朝向端帽10的一侧面设有连接弹簧基座9-7，连接弹簧12的一端通过焊接与连接弹簧基座9-7固定连接，连接弹簧12的另一端与端帽10固定连接。
如图7所示，端帽10包括锥形导向帽10-1和中空管10-2，锥形导向帽10-1固定在中空管10-2的底部，注浆管套头9设置在中空管10-2内，注浆管套头9可以在中空管10-2内轴向滑动。锥形导向帽10-1的端部设有螺孔10-4，对应的在连接限位杆11的端部设有外螺纹，从而实现端帽10与连接限位杆11的固定连接。同时锥形导向帽10-1的端部还固定有堵头10-5，堵头10-5的外部直径与注浆管套头9内壁的内径相同，在未注浆的情况下，堵头10-5将注浆管套头9的端部堵住，防止杂物进入。中空管10-2上设有数个圆形出浆口10-3，浆料沿圆形出浆口10-3排出，从而实现了注浆。圆形的出浆口注浆面整体呈现柱形，提高注浆效果。
如图8所示，连接限位杆11的一端设有旋紧螺纹11-2，旋紧螺纹11-2与端帽10内的螺孔10-4之间通过螺纹固定连接，连接限位杆11的另一端设有限位翅11-1，限位翅11-1与预留限位环9-4上的限位凹槽9-6对应设置。
在锚索组装过程中，预留注浆管底部采用自封式管头。自封式管头组装时，如图14所示，首先将连接弹簧12的一端焊接于端帽10内部，再将注浆管套头9设置在端帽10内部，连接弹簧12的另一端与连接弹簧基座9-7焊接。将连接限位杆11穿过预留限位环9-4，连接限位杆11一端的旋紧螺纹11-2旋入端帽10内部，初始状态下，注浆管套头9的一端与锥形导向帽的端部接触，此时自封式管头为闭合封闭状态。如图15所示，按照上述注浆管卡箍7与注浆管8之间的连接方式，将注浆管8套入注浆口安装槽9-1内，并旋紧紧固螺栓9-3，锁紧管壁，防止自封式管头脱出。注浆过程中，如图16和图17所示，浆液沿着浆液流动口9-5流入注浆管套头9和端帽10内，端帽10在注浆压力的冲击下，克服连接弹簧12的拉力而向下滑动，注浆管套头9和端帽10之间产生相对滑动，端帽10上的圆形出浆口10-3显露出来，浆液沿着圆形出浆口10-3漏出，从而使浆液呈现柱状注入，提高注浆效果。当端帽10下降至连接限位杆11顶部的限位翅11-1与注浆管套头9上的限位凹槽9-6接触时，圆形出浆口10-3全部显露出来，同时在限位翅11-1的限位作用下，端帽10停止向下滑动。浆液停止流动后，在连接弹簧12的弹力作用下，端帽10自动复位，自封式管头恢复至初始状态。
利用该注浆装置实现高凝结性注浆材料的注浆过程如下所述：首先，完成连接头和自封式管头的组装。然后，将一段注浆管8与注浆管卡箍7连接，使注浆泵与连接段2之间通过该段注浆管8连接；将另一段注浆管8与注浆管套头9连接，先下放锚索，接下来，使连接段2与注浆管套头9之间通过该段注浆管8连接，此时整个注浆管路安装完成。之后，进行注浆动作，高凝结性注浆材料经注浆泵通过注浆管8抽入连接头内，在连接头内对浆料的流量和压力进行测量，浆料随着注浆管8继续流入注浆管套头9内，端帽10在注浆压力冲击下，克服连接弹簧的拉力而向下滑动，并从圆形出浆口10-3漏出，从而使浆液呈现柱状注入，提高注浆效果。注浆结束后，进行洗管处理，若施工间隔较长，应拆分注浆管路，并清洗干净，密封保存，等待下一次注浆施工。
以上对本发明所提供的用于高凝结性注浆材料的注浆装置进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (7)

  1. 一种用于高凝结性注浆材料的注浆装置，其特征在于：包括注浆管(8)、连接头和自封式管头，连接头的一端通过注浆管(8)与注浆泵连接，连接头的另一端通过注浆管与自封式管头连接，注浆管(8)与连接头、自封式管头之间均为固定密封连接；
    所述连接头包括测量段(1)、连接段(2)、压紧螺栓(6)和注浆管卡箍(7)，测量段(1)固定位于连接段(2)的中部，测量段(1)的左、右两侧面分别固定连接有连接段(2)，测量段(1)和连接段(2)内均设有内孔，且内孔呈贯通状态，连接段(2)内设有阶梯孔，阶梯孔包括大孔和小孔，朝向测量段(1)的孔为小孔，其孔径与测量段(1)的内孔孔径相同，朝向连接段(2)自由端的孔为大孔，注浆管卡箍(7)在大孔内沿其轴向往复运动，在设有大孔的连接段(2)管壁上对称设置两条轴向的横向滑动槽Ⅰ(2-1)，横向滑动槽Ⅰ(2-1)贯穿大孔的轴向，大孔内壁朝向连接段自由端的一端设有压紧内螺纹(2-2)，压紧内螺纹(2-2)与压紧螺栓的外螺纹相配合，大孔内壁朝向小孔的一端设有对接段(2-3)，对接段(2-3)与注浆管卡箍(7)接触，在对接段(2-3)上设有环向滑动槽(2-4)；
    所述连接段(2)的大孔内由外至内依次设有压紧螺栓(6)和注浆管卡箍(7)，压紧螺栓(6)包括螺栓头部(6-4)和与螺栓头部固定连接的螺杆(6-5)，螺杆(6-5)和螺栓头部(6-4)内设有相互连通的中心孔，注浆管卡箍(7)设置在压紧螺栓(6)的中心孔内，螺杆(6-5)的外表面设有压紧外螺纹(6-1)，压紧外螺纹(6-1)与连接段(2)内的压紧内螺纹(2-2)配合，螺杆(6-5)上沿其轴向对称设置两条滑动缝(6-3)，滑动缝(6-3)与横向滑动槽Ⅰ(2-1)对应设置且上下相互连通，对应的在螺栓头部(6-4)内对称设置两个横向滑动槽Ⅱ(6-2)，横向滑动槽Ⅱ(6-2)与滑动缝(6-3)连通；
    所述注浆管卡箍(7)包括外壁(7-1)和内管(7-2)，外壁(7-1)呈圆筒状，外壁(7-1)在压紧螺栓(6)的中心孔内沿其轴向滑动，内管(7-2)设置在外壁(7-1)内，内管(7-2)的管径与小孔孔径相同，内管(7-2)与外壁(7-1)固定连接，且内管(7-2)与外壁(7-1)之间存在径向间隙，注浆管(8)的管壁设置在外壁(7-1)与内管(7-2)之间，外壁(7-1)朝向小孔的一侧对称设置两限位滑动凸起(7-4)，限位滑动凸起(7-4)分别设置在横向滑动槽Ⅱ(6-2)和横向滑动槽Ⅰ(2-1)内，且限位滑动凸起(7-4)在横向滑动槽Ⅱ(6-2)和横向滑动槽Ⅰ(2-1)内往复滑动，限位滑动凸起(7-4)沿环向滑动槽(2-4)转动，外壁(7-1)上朝向连接段自由端的一侧设有数个压紧凸起(7-5)，压紧凸起(7-5)与压紧螺栓(6)的端部接触，外壁(7-1)的端部固定有锁紧带(7-6)，锁紧带(7-6)的两端之间通过锁紧螺栓(7-7)连接；
    所述自封式管头包括注浆管套头(9)、端帽(10)、连接限位杆(11)和连接弹簧(12)，注浆管套头(9)通过注浆管(8)与连接头连接，注浆管(8)固定套接在注浆管套头(9) 的一端，注浆管套头(9)的另一端套设在端帽(10)内，注浆管套头(9)在端帽(10)内滑动，注浆管套头(9)与端帽(10)之间通过连接弹簧(12)连接，连接限位杆(11)的一端穿过注浆管套头(9)旋入端帽(10)内，连接限位杆(11)与端帽(10)固定连接，连接限位杆(11)的另一端设有限位机构，注浆管套头(9)的外表面设有数个变形槽(9-2)，变形槽(9-2)处设有紧固螺栓。
  2. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述测量段(1)上设有流量计(4)和压力传感器(5)，流量计(4)、压力传感器(5)分别通过传感器接头(3)与测量段(1)连接。
  3. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述内管(7-2)的外径大于注浆管的内径，外壁(7-1)朝向小孔的一端固定有挤压海绵(7-3)，对应的在外壁(7-1)的另一端固定有锁紧带(7-6)。
  4. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述注浆管套头(9)包括套头外壁和套头内壁，套头内壁设置在套头外壁的内侧，套头内壁的底部与套头外壁固定连接，套头内壁与套头外壁之间存在径向间隙，形成注浆口安装槽(9-1)，注浆口安装槽(9-1)的一端呈开口状，另一端呈封闭状，注浆管(8)的管壁从开口端***注浆口安装槽(9-1)内，套头内壁的外径大于注浆管(8)的内径，注浆管套头(9)内的中心位置处设有预留限位环(9-4)，预留限位环(9-4)与套头内壁的内表面之间通过数个间隔设置的连接杆连接，连接杆将预留限位环(9-4)与套头内壁之间的间隙分为数个浆液流动口(9-5)，连接限位杆(11)穿过预留限位环(9-4)的中心孔，预留限位环(9-4)朝向注浆管的一侧设有限位凹槽(9-6)，预留限位环(9-4)朝向端帽(10)的一侧面设有连接弹簧基座(9-7)，连接弹簧(12)的一端与连接弹簧基座(9-7)固定连接，连接弹簧(12)的另一端与端帽(10)固定连接。
  5. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述端帽(10)包括锥形导向帽(10-1)和中空管(10-2)，锥形导向帽(10-1)固定在中空管(10-2)的底部，注浆管套头(9)设置在中空管(10-2)内，注浆管套头(9)在中空管(10-2)内轴向滑动，锥形导向帽(10-1)的端部设有螺孔(10-4)，对应的在连接限位杆(11)的端部设有外螺纹，锥形导向帽(10-1)的端部还固定有堵头(10-5)，堵头(10-5)的外部直径与注浆管套头(9)内壁的内径相同，中空管(10-2)的管壁上设有数个圆形出浆口(10-3)。
  6. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述连接限位杆(11)的一端设有旋紧螺纹(11-2)，旋紧螺纹(11-2)与端帽(10)内的螺孔(10-4)之间通过螺纹固定连接，连接限位杆(11)的另一端设有限位翅(11-1)，限位翅(11-1)与 预留限位环(9-4)上的限位凹槽(9-6)对应设置，连接弹簧(12)套在连接限位杆(11)的外侧。
  7. 根据权利要求1所述的用于高凝结性注浆材料的注浆装置，其特征在于：所述环向滑动槽(2-4)的开设角度为90°，占据1/4圆截面，环向滑动槽(2-4)的旋向与压紧内螺纹(2-2)的旋向相反。
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