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CN-121988196-A - Underground double-pipe grouting mixer and grouting method thereof

CN121988196ACN 121988196 ACN121988196 ACN 121988196ACN-121988196-A

Abstract

The invention discloses a double-pipe grouting mixer for underground and a grouting method thereof, belongs to the technical field of underground treatment, and solves the problem of poor mixing effect of an existing underground grouting accelerator and slurry. The utility model provides a double-barrelled slip casting blender is used in pit, which comprises a housin, thick liquid delivery unit and accelerator delivery unit locate on the casing, thick liquid delivery unit includes thick liquid conveyer pipe and the storage subassembly that links to each other with thick liquid conveyer pipe, accelerator delivery unit includes accelerator conveyer pipe and the play liquid subassembly that links to each other with accelerator pipe, thick liquid conveyer pipe and accelerator pipe all wear to locate on the casing, be used for storing thick liquid in the storage subassembly, the storage subassembly communicates in with the casing to make thick liquid mix with the accelerator that goes out liquid subassembly and spray. The user is used for treating the reinforced position with the material, adopts this blender to regulate and control the discharge rate of thick liquid, adjusts the discharge position of accelerator, further promotes the mixing effect.

Inventors

  • LI XUANLIANG
  • REN YONGQIANG
  • LV SHUAI
  • GAO KUIYING
  • ZHANG YUNFEI
  • TIAN ZHICHENG

Assignees

  • 国能神东煤炭集团有限责任公司
  • 中国神华能源股份有限公司神东煤炭分公司

Dates

Publication Date
20260508
Application Date
20260121

Claims (14)

  1. 1. The utility model provides a double-barrelled slip casting blender for pit, includes casing (1), thick liquid delivery unit (2) and accelerator delivery unit (3), thick liquid delivery unit (2) with accelerator delivery unit (3) are located on casing (1), thick liquid delivery unit (2) include thick liquid conveyer pipe (21) and with storage subassembly (22) that thick liquid conveyer pipe (21) link to each other, accelerator delivery unit (3) include accelerator conveyer pipe (31) and with play liquid subassembly (32) that accelerator pipe (31) link to each other, thick liquid conveyer pipe (21) with accelerator pipe (31) are all worn to locate on casing (1), be used for storing thick liquid in storage subassembly (22), storage subassembly (22) with casing (1) are interior to be linked together, so that thick liquid with go out liquid subassembly (32) and spray quick-witted.
  2. 2. The downhole dual pipe grouting mixer as claimed in claim 1, wherein the storage assembly (22) comprises a storage chamber (221) and a guide piece (222) arranged in the storage chamber (221), the guide piece (222) divides the storage chamber (221) into at least two storage cavities (2211), one storage cavity (2211) is communicated with the slurry conveying pipe (21), and when slurry in one storage cavity (2211) reaches a preset value, the guide piece (222) rotates to enable the other storage cavity (2211) to be communicated with the slurry conveying pipe (21) so as to realize transfer of slurry from one storage cavity (2211) to the other storage cavity (2211).
  3. 3. The downhole dual pipe grouting mixer as claimed in claim 1, wherein the liquid outlet assembly (32) comprises a transmission member (321) and a liquid spraying member (322) connected with the transmission member (321), the accelerator pipe (31) is communicated with one end of the transmission member (321), the other end of the transmission member (321) is connected with the liquid spraying member (322), and the transmission member (321) is arranged in the storage assembly (22) in a penetrating manner.
  4. 4. A downhole dual pipe grouting mixer according to claim 3, wherein the transmission member (321) comprises a bi-directional linear displacement member (3211), a driving member (3212) and a first connecting member (3213), the output end of the driving member (3212) is connected with the bi-directional linear displacement member (3211) through the first connecting member (3213), the accelerator pipe (31) is communicated with the bi-directional linear displacement member (3211) through the first connecting member (3213), and the bi-directional linear displacement member (3211) is arranged through the storage assembly (22).
  5. 5. The downhole dual-tube grouting mixer of claim 4, wherein the flow guide member (222) comprises a second connecting member (2221), a partition member (2222) and a detection moving member (2223), the second connecting member (2221) is sleeved on the periphery of the bidirectional linear displacement member (3211), the partition member (2222) is arranged on the periphery of the second connecting member (2221), and the detection moving member (2223) is arranged at the bottom of the storage assembly (22).
  6. 6. The downhole dual tube grouting mixer of claim 5, wherein the detection moving member (2223) comprises a weighing portion (22231), a pressure detection member (22232), a telescopic member (22233), a first extrusion member (22234) and a second extrusion member (22235), the weighing portion (22231) is provided with the pressure detection member (22232), the telescopic member (22233), the first extrusion member (22234) and the second extrusion member (22235), one side of the weighing portion (22231) is in contact with the inner wall of the storage chamber (221), the other side of the weighing portion (22231) is in contact with the partition member (2222), the first extrusion member (22234) is connected with the bottom of the second connection member (2221), and the pressure detection member (22232) is sequentially connected with the first extrusion member (22234) through the telescopic member (22233) and the second extrusion member (22235).
  7. 7. A downhole dual pipe grouting mixer according to claim 3, wherein the spray piece (322) comprises a spray tray (3221) and a fluid pipe (3222) connected to the spray tray (3221), the fluid pipe (3222) being in communication with the transmission piece (321).
  8. 8. The downhole dual pipe grouting mixer as claimed in claim 7, wherein the liquid spraying piece (322) further comprises at least two liquid separating pipes (3224), at least two baffle plates (3223) and a fluid communication control piece (3225), the liquid conveying pipe (3222) is connected with the liquid spraying disc (3221) through at least two liquid separating pipes (3224), at least two baffle plates (3223) are arranged in the liquid spraying disc (3221), and the fluid communication control piece (3225) is arranged on the liquid conveying pipe (3222) and used for controlling the communication or disconnection of liquid in the liquid separating pipes (3224).
  9. 9. The downhole dual pipe grouting mixer as claimed in claim 8, wherein the fluid communication control (3225) comprises a magnetic field generating member (32251) and a magnetic member (32252) coupled to the magnetic field generating member (32251), the magnetic member (32252) being disposed within the fluid delivery pipe (3222).
  10. 10. The downhole dual pipe grouting mixer as claimed in claim 9, wherein the magnetic member (32252) has an outer diameter equal to an inner diameter of the fluid pipe (3222) and larger than an inner diameter of the fluid dividing pipe (3224).
  11. 11. A downhole dual pipe grouting mixer as claimed in any of claims 7 to 10, characterised in that the spray tray (3221) is helical and the diameter of the bottom of the spray tray (3221) is greater than the diameter of the top thereof, and the spray tray (3221) is provided with a plurality of spray holes (32211).
  12. 12. The downhole dual pipe grouting mixer as claimed in claim 11, characterised in that the spray member (322) further comprises a regulating member (3226), the regulating member (3226) being connected to the spray tray (3221) for regulating the morphology of the spray tray (3221).
  13. 13. A downhole dual pipe grouting mixer as claimed in any of the claims 1 to 10, characterised in that the mixer further comprises a pressurizing unit (4), the pressurizing unit (4) being arranged below the housing (1) for pressurizing the mixed material.
  14. 14. A method of dual pipe grouting for use downhole, applying the dual pipe grouting mixer for use downhole according to any of claims 1-13, comprising the steps of: Placing the slurry into the slurry conveying pipe (21) to be stored through the storage component (22), and placing the accelerator into the accelerator pipe (31) to be discharged through the discharge component (32); The slurry stored by the storage component (22) and the accelerator sprayed by the liquid outlet component (32) are mixed in the shell (1) and discharged from the bottom of the shell (1); and (3) aligning the mixed materials discharged from the bottom of the shell (1) to the underground position to be reinforced for grouting.

Description

Underground double-pipe grouting mixer and grouting method thereof Technical Field The invention belongs to the technical field of underground treatment, and particularly relates to an underground double-pipe grouting mixer and a grouting method thereof. Background In mines, grouting reinforcement is often required to be performed on walls and the like so as to improve the stability and safety of the mine, and in the prior art, a double-liquid grouting method is often adopted when the mine is reinforced. The double-liquid grouting method is characterized in that an accelerator and cement paste are alternately injected into a position to be reinforced, and the two solutions react rapidly to generate silica gel and calcium silicate gel, so that the effects of cementing and filling pores are achieved, and the strength and bearing capacity of soil are improved. In practical operation, a double-liquid grouting device is often needed to perform double-liquid grouting, and cement paste and an accelerator are poured by a single pipe. However, the existing single-pipe grouting with a longer distance causes the slurry to be coagulated to form a gelled substance, the resistance is increased, the slurry is difficult to push into a lower karst crack by means of the pressure of a grouting pump, and even a pipeline is possibly blocked, for this purpose, a mixer is arranged at the tail end of the grouting, so that the accelerator and the slurry are mixed, but when the existing mixer is used for mixing, the connection position of the accelerator pipeline and the mixer is fixed, that is, the discharge position of the accelerator is fixed, at the moment, the condition that the discharge is fixed, the flocculant at the discharge port relatively exists in a higher content, the content of the slurry flocculant at the inlet port is different from the content at the rest positions, and the mixing effect is possibly relatively poor in the subsequent stirring and mixing process. Disclosure of Invention In view of the above problems, the present invention aims to provide a double-pipe grouting mixer for underground use and a grouting method thereof, which solve the problem that the existing underground grouting accelerator has poor mixing effect with slurry. In order to achieve the above purpose, the technical scheme of the invention is realized as follows: The utility model provides a double-barrelled slip casting blender is used in pit, includes casing, thick liquid delivery unit and accelerator delivery unit, thick liquid delivery unit with accelerator delivery unit locates on the casing, thick liquid delivery unit include thick liquid conveyer pipe and with the storage subassembly that the thick liquid conveyer pipe links to each other, accelerator delivery unit include the accelerator conveyer pipe and with the play liquid subassembly that the accelerator pipe links to each other, the thick liquid conveyer pipe with the accelerator pipe is all worn to locate on the casing, be used for storing thick liquid in the storage subassembly, the storage subassembly with be linked together in the casing, so that thick liquid with go out the accelerator that the liquid subassembly sprays mixes. In some embodiments, the storage assembly comprises a storage chamber and a flow guide member arranged in the storage chamber, wherein the flow guide member divides the storage chamber into at least two storage cavities, one storage cavity is communicated with the slurry conveying pipe, and when the slurry in one storage cavity reaches a preset value, the flow guide member rotates to enable the other storage cavity to be communicated with the slurry conveying pipe, so that the slurry is transferred from one storage cavity to the other storage cavity. In some embodiments, the liquid outlet assembly comprises a transmission member and a liquid spraying member connected with the transmission member, the accelerator pipe is communicated with one end of the transmission member, the other end of the transmission member is connected with the liquid spraying member, and the transmission member is arranged in the storage assembly in a penetrating manner. In some embodiments, the transmission member includes a bidirectional linear displacement member, a driving member and a first connecting member, wherein an output end of the driving member is connected with the bidirectional linear displacement member through the first connecting member, the accelerator pipe is communicated with the bidirectional linear displacement member through the first connecting member, and the bidirectional linear displacement member penetrates through the storage assembly. In some embodiments, the flow guiding member comprises a second connecting member, a partition member and a detection moving member, wherein the second connecting member is sleeved on the periphery of the bidirectional linear displacement member, the partition member is arranged on the periphery of the second conn