CN117605512A - Anchor cable high-pressure grouting control device and method - Google Patents
Anchor cable high-pressure grouting control device and method Download PDFInfo
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- CN117605512A CN117605512A CN202410089614.5A CN202410089614A CN117605512A CN 117605512 A CN117605512 A CN 117605512A CN 202410089614 A CN202410089614 A CN 202410089614A CN 117605512 A CN117605512 A CN 117605512A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 125
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 16
- 238000011156 evaluation Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 21
- 238000005553 drilling Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 13
- 238000004873 anchoring Methods 0.000 abstract description 6
- 230000008093 supporting effect Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 235000014121 butter Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/006—Anchoring-bolts made of cables or wires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an anchor cable high-pressure grouting control device and method, comprising an internal sleeve, an expansion mechanism, an extrusion mechanism, a high-pressure sealing mechanism, a grouting connecting mechanism and an intelligent monitoring control mechanism; the expansion mechanism is arranged at one end of the inner sleeve, the extrusion mechanism is arranged at the middle part of the inner sleeve and used for extruding the expansion mechanism to expand and closely contact with the wall of a drilled hole to realize high-pressure sealing in the hole, the high-pressure sealing mechanism is arranged at one end of the inner sleeve far away from the expansion mechanism, a grouting hole is formed in the inner sleeve, the grouting hole is connected with the grouting connecting mechanism, and the intelligent monitoring control mechanism is arranged on the grouting connecting mechanism and used for monitoring real-time data of grouting conditions and acquiring evaluation data of the whole process. The invention can monitor and accurately evaluate the grouting effect in the whole process in real time, effectively realize the high-pressure grouting control and anchoring supporting effect, and improve the condition and stability of engineering surrounding rock.
Description
Technical Field
The invention relates to the technical field of anchor cable grouting, in particular to an anchor cable high-pressure grouting control device and method.
Background
In the construction process of engineering including underground engineering, tunnel engineering, mining engineering, slope, foundation pit and other engineering, anchor cable is used to strengthen and support stratum to prevent foundation deformation and collapse and instability. The high-strength tensile capacity of the anchor cable arranged in the stratum drilling hole and the grouting consolidation body formed around the anchor cable are utilized to strengthen the stratum so as to improve the integrity of the stratum, thereby controlling the deformation of the stratum and enabling the stratum to be in a stable and safe state. At present, the anchor cable grouting support has been widely applied to engineering rock mass support due to obvious technical and economic effects.
The anchor cable grouting support technology has become a main means for supporting under the condition of surrounding rock breaking of underground engineering and mine laneway, and the support performance and grouting effect of the anchor cable grouting support technology have great relation. The traditional anchor cable grouting device adopts low-pressure manual grouting, and often causes the factors such as grouting device slurry leakage or insufficient grouting pressure, so that the permeation and diffusion range of cement slurry in surrounding rock is small, the supporting effect can not be fully reflected, and particularly, the supporting effect is poor in soft rock tunnels, surrounding rock water-containing tunnels and tunnels with weak permeability. Therefore, in order to improve the grouting effect of the anchor cable, the high-pressure injection grouting technology and the matched device are rapidly researched and developed and applied, and the principle is that high-pressure jet flow formed by high-pressure slurry is utilized to rotationally impact and cut stratum soil body, so that soil body particles and cement paste are mixed and coagulated, and a reinforced mixture is formed to improve the seepage prevention or bearing capacity of the foundation.
The inventor researches and discovers that the grouting device in the prior art is insufficient in grouting pressure, so that poor grouting uniformity and integrity are easily caused, the anchoring effect is influenced, meanwhile, the grouting efficiency is low, the situation of grouting cement slurry filling in a drilling hole cannot be fed back in time, cement slurry overflow is easily caused, and the grouting quality cannot be guaranteed.
Disclosure of Invention
The invention aims to provide an anchor cable high-pressure grouting control device and method, which can monitor and accurately evaluate the grouting effect in the whole process in real time, effectively realize the high-pressure grouting control and anchoring supporting effect and improve the condition and stability of engineering surrounding rock; and the manufacturing is convenient and fast, the operation is simple, the worker is easy to master, the adaptability is strong, and the device can be repeatedly used.
Embodiments of the present invention are implemented as follows:
in a first aspect, the invention provides an anchor cable high-pressure grouting control device, which comprises an inner sleeve, an expansion mechanism, an extrusion mechanism, a high-pressure sealing mechanism, a slurry inlet connecting mechanism and an intelligent monitoring control mechanism; the expansion mechanism is arranged at one end of the inner sleeve, the extrusion mechanism is arranged at the middle part of the inner sleeve and used for extruding the expansion mechanism to expand and closely contact with the wall of a drilled hole to realize high-pressure sealing in the hole, the high-pressure sealing mechanism is arranged at one end of the inner sleeve, which is far away from the expansion mechanism, the inner sleeve is provided with a grouting hole, the grouting connecting mechanism is connected with the grouting hole, and the intelligent monitoring control mechanism is arranged on the grouting connecting mechanism and used for carrying out real-time data monitoring on grouting conditions and acquiring evaluation data of the whole process.
In an alternative embodiment, the expansion mechanism comprises a plurality of expansion rubber plugs and a plurality of steel washers, the plurality of expansion rubber plugs and the plurality of steel washers are alternately arranged on the inner sleeve, and the extrusion mechanism is in contact with the steel washers when extruding the expansion mechanism.
In an alternative embodiment, the extrusion mechanism comprises a movable sleeve and a rotating nut, one end of the inner sleeve, which is far away from the expansion mechanism, is provided with a threaded section, the movable sleeve is movably arranged on the inner sleeve and is partially positioned on the threaded section, the rotating nut is arranged on the threaded section, when the rotating nut rotates positively, the rotating nut pushes the movable sleeve to move in the direction of extruding the expansion mechanism, and when the rotating nut rotates reversely, the rotating nut moves in the direction far away from the expansion mechanism.
In an alternative embodiment, two rotary handles are provided on the rotary nut, the two rotary handles being disposed opposite each other.
In an alternative embodiment, the high pressure sealing mechanism comprises a first adapter, a second adapter, a cowhells washer and a first ball valve, wherein the first adapter is connected to the inner sleeve at an end far away from the expansion mechanism, the second adapter is connected to the first adapter, the cowhells washer is arranged in the second adapter, and the first ball valve is arranged at the inlet of the second adapter.
In an alternative embodiment, the grouting connecting mechanism comprises a reinforcing bar ring, a first connecting pipe and a second ball valve, the reinforcing bar ring is sleeved on a section of the inner sleeve containing a grouting hole, a connecting port is arranged on the reinforcing bar ring and communicated with the grouting hole, the first connecting pipe is arranged on the connecting port and communicated with the grouting hole, and the second ball valve is arranged in the first connecting pipe.
In an optional embodiment, the intelligent monitoring control mechanism comprises a flow and pressure intelligent monitor and a second connecting pipe, wherein an external thread is arranged at one end of the first connecting pipe away from the grouting hole, an internal thread is arranged at one end of the second connecting pipe, and the external thread is connected with the internal thread in a matched manner. The intelligent flow and pressure monitor is arranged on the second connecting pipe.
In an alternative embodiment, the anchor cable high-pressure grouting control device further comprises a plug, and the plug is arranged on the end face of one end, connected with the expansion mechanism, of the inner sleeve.
In an alternative embodiment, the anchor cable high-pressure grouting control device further comprises an anchor cable and an anchor cable exhaust pipe, the anchor cable and the anchor cable exhaust pipe penetrate through the high-pressure sealing mechanism and the inner sleeve and are arranged in the drill hole, and the anchor cable exhaust pipe are bound together by adopting lead wires.
In a second aspect, the present invention provides a method for controlling high-pressure grouting of an anchor cable, which is based on any one of the foregoing embodiments, and includes:
s1, binding an anchor rope and an anchor rope exhaust pipe together by using a lead wire, and sending the anchor rope and the anchor rope exhaust pipe into an anchor rope drilling hole, and simultaneously, penetrating the anchor rope and the anchor rope exhaust pipe from an anchor rope high-pressure grouting control device and coming out from one end of a first adapter;
s2, pushing the anchor rope high-pressure grouting control device into an anchor rope drilling hole, and enabling the expansion rubber plug and the steel gasket to enter one end of the anchor rope drilling hole for a distance;
s3, rotating the rotating nut, pushing the movable sleeve to extrude the expansion rubber plug to expand laterally, and tightly contacting the expansion rubber plug with the wall of the anchor cable drilling hole to realize high-pressure sealing in the hole;
s4, connecting the slurry inlet connecting mechanism with the intelligent monitoring control component, and connecting a second connecting pipe with the slurry injection pump; all parts in the high-pressure sealing mechanism are connected, the high-pressure sealing mechanism is ensured to achieve a high-pressure sealing effect, the first ball valve and the second ball valve are in an open state, and the intelligent flow and pressure monitor is opened;
s5, after grouting is started, after the anchor cable exhaust pipe is pulped out, rapidly closing the first ball valve; after grouting reaches a design pressure value, the second ball valve, the flow and pressure intelligent monitor are quickly closed, and the grouting process is finished;
s6, after the slurry reaches the initial setting time, sequentially disassembling each part of the whole set of anchor cable high-pressure grouting control device.
The embodiment of the invention has the beneficial effects that:
the invention provides an anchor cable high-pressure grouting control device which comprises an inner sleeve, an expansion mechanism, an extrusion mechanism, a high-pressure sealing mechanism, a grouting connecting mechanism and an intelligent monitoring control mechanism, wherein the inner sleeve is arranged on the inner sleeve; the expansion mechanism is arranged at one end of the inner sleeve, the extrusion mechanism is arranged at the middle part of the inner sleeve and used for extruding the expansion mechanism to expand and closely contact with the wall of a drilled hole to realize high-pressure sealing in the hole, the high-pressure sealing mechanism is arranged at one end of the inner sleeve far away from the expansion mechanism, a grouting hole is formed in the inner sleeve, the grouting hole is connected with the grouting connecting mechanism, and the intelligent monitoring control mechanism is arranged on the grouting connecting mechanism and used for monitoring real-time data of grouting conditions and acquiring evaluation data of the whole process. The high-pressure sealing mechanism is adopted in the invention, so that the aim of high-pressure control can be fulfilled, the actually measured highest grouting control pressure can reach more than 30MPa, the grouting pressure is only 2-3MPa compared with the underground traditional anchor cable, the grouting pressure has obvious advantages, and the problems of poor grouting uniformity and integrity caused by insufficient grouting pressure and further influence on the anchoring effect can be effectively solved; in addition, by adopting the intelligent monitoring control component, the grouting condition can be monitored in real time, all evaluation data of the whole process are obtained, the accurate evaluation of the grouting effect of the whole process can be carried out according to the monitoring data, and the grouting quality and effect are ensured.
The invention is applicable to the use conditions and types of different anchor cables, obtains all evaluation data of the whole grouting process, has the advantages of convenient device manufacture, simple operation process and repeated use, can effectively realize the high-pressure grouting reinforcement effect on engineering surrounding rock under complex geological conditions, and further improves the integrity and stability of the surrounding rock.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an anchor cable high-pressure grouting control device according to an embodiment of the invention;
fig. 2 is a schematic diagram of a portion of an anchor cable high-pressure grouting control device according to an embodiment of the present invention;
FIG. 3 is a schematic view of an inner sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic view of a high pressure sealing mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of section A-A and a schematic view of section B-B in FIG. 1.
Icon:
10-drilling holes; 20-an inner sleeve; 21-grouting holes; 22-thread segments; 30-an expansion mechanism; 31-an expansion rubber plug; 32-a steel washer; 40-an extrusion mechanism; 41-a movable sleeve; 42-rotating the nut; 43-rotating the handle; 50-a high pressure sealing mechanism; 51-a first adapter; 52-a second adapter; 53-cowhells washers; 54-a first ball valve; 60-a slurry inlet connecting mechanism; 61-steel bar rings; 62-a first connection tube; 621-external threads; 63-a second ball valve; 70-an intelligent monitoring control mechanism; 71-intelligent flow and pressure monitor; 72-a second connecting tube; 721-internal thread; 80-plugs; 90-anchor cables; 100-an anchor cable exhaust pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The high-pressure grouting control device for the anchor cable 90 is suitable for construction of underground engineering, tunnel engineering, mining engineering, side slope, foundation pit and other engineering, and can form grouting concretions around the anchor cable 90 to strengthen stratum so as to improve the integrity of stratum, thereby controlling the deformation of stratum and enabling the stratum to be in a stable and safe state.
Note that the bore diameter size of anchor line 90 bore 10 in this embodiment is 75mm and the length of bore 10 is 12.5m.
As shown in fig. 1, the high-pressure grouting control device for the anchor cable 90 provided in this embodiment includes an inner sleeve 20, an expansion mechanism 30, an extrusion mechanism 40, a high-pressure sealing mechanism 50, a slurry feeding connection mechanism 60 and an intelligent monitoring control mechanism 70; the expansion mechanism 30 is arranged at one end of the inner sleeve 20, the extrusion mechanism 40 is arranged at the middle part of the inner sleeve 20 and used for extruding the expansion mechanism 30 to expand and closely contact with the wall of the borehole 10 to realize high-pressure sealing in the borehole, the high-pressure sealing mechanism 50 is arranged at one end of the inner sleeve 20 far away from the expansion mechanism 30, the inner sleeve 20 is provided with a grouting hole 21, the grouting connecting mechanism 60 is connected with the grouting hole 21, the intelligent monitoring control mechanism 70 is arranged on the grouting connecting mechanism 60 and used for monitoring real-time data of grouting conditions and acquiring evaluation data of the whole process. In detail, the overall external diameter of the inner sleeve 20 is 57mm and the wall thickness is 6mm; the grouting holes 21 are circular holes with a diameter of 15 mm.
The high-pressure sealing mechanism 50 is adopted in the embodiment, so that the aim of high-pressure control can be fulfilled, the actually measured highest grouting control pressure can reach more than 30MPa, the grouting pressure is only 2-3MPa compared with the grouting pressure of the underground traditional anchor cable 90, the grouting pressure has obvious advantages, and the problems that the grouting uniformity and integrity are poor due to insufficient grouting pressure, and the anchoring effect is influenced can be effectively solved; in addition, by adopting the intelligent monitoring control mechanism 70, the grouting condition can be monitored in real time, all evaluation data of the whole process can be obtained, the accurate evaluation of the grouting effect of the whole process can be carried out according to the monitoring data, and the grouting quality and effect are ensured.
The embodiment can be suitable for the use working conditions and types of different anchor cables 90, obtain all evaluation data of the whole grouting process, has the advantages of convenience in manufacturing, simplicity in operation process and reusability, can effectively realize the high-pressure grouting reinforcement effect on engineering surrounding rocks under complex geological conditions, and further improves the integrity and stability of the surrounding rocks.
Further, the high-pressure grouting control device for the anchor cable 90 further comprises the anchor cable 90 and an anchor cable exhaust pipe 100, wherein the anchor cable 90 and the anchor cable exhaust pipe 100 penetrate through the high-pressure sealing mechanism 50 and the inner sleeve 20 and are arranged in the drilling hole 10, and the anchor cable 90 and the anchor cable exhaust pipe 100 are bound together by lead wires. In detail, cable bolt 90 has a diameter of 21.8mm and a length of 12.5m; the cable duct 100 is a flexible tube having an outer diameter of 8mm and a length of 13m.
As shown in fig. 2, in some embodiments, the expansion mechanism 30 includes a plurality of expansion plugs 31 and a plurality of steel washers 32, the plurality of expansion plugs 31 being alternately disposed with the plurality of steel washers 32 on the inner sleeve 20, and the pressing mechanism 40 being in contact with the steel washers 32 when pressing the expansion mechanism 30. In detail, the expansion rubber plug 31 and the steel gasket 32 in the embodiment are provided with three, the expansion rubber plug 31 has an outer diameter of 70mm, an inner diameter of 58mm, a wall thickness of 6mm and a length of 10cm; butter smearing operation is carried out inside the expansion rubber plug 31 before and after each use; the steel washer 32 has an outer diameter of 70mm, an inner diameter of 58mm, a wall thickness of 6mm and a width of 6mm; the butter application operation is performed inside the steel gasket 32 before and after each use.
It will be appreciated that the purpose of the steel gasket 32 is to limit the expansion of the expansion plug 31 in the vertical direction rather than in the horizontal direction, which is more effective in sealing the bore 10 of the anchor line 90, as the expansion plug 31 expands when compressed, thereby sealing the bore 10 of the anchor line 90.
As shown in fig. 3, in some embodiments, the pressing mechanism 40 includes a movable sleeve 41 and a rotating nut 42, the end of the inner sleeve 20 away from the expansion mechanism 30 is provided with a threaded section 22, the movable sleeve 41 is movably disposed on the inner sleeve 20 and partially disposed on the threaded section 22, the rotating nut 42 is disposed on the threaded section 22, the rotating nut 42 pushes the movable sleeve 41 to move in a direction of pressing the expansion mechanism 30 when the rotating nut 42 rotates forward, and the rotating nut 42 moves in a direction away from the expansion mechanism 30 when the rotating nut 42 rotates backward.
In detail, in the present embodiment, the outer diameter of the movable sleeve 41 is 64mm, the wall thickness is 4mm, and the length is 50cm; butter smearing operation is required to be carried out in the movable sleeve 41 before and after each use, the thread section 22 is trapezoidal in thread shape, the width of the tip is 2.5mm, the width of the root is 3mm, the height is 2.5mm, the total length is 20cm, and the length of the movable sleeve 41 positioned at the part of the thread section 22 is 10cm; the outer diameter of the swivel nut 42 is 66mm and is internally machined with trapezoidal threads that mate with the trapezoidal threads on the thread segments 22.
As shown in fig. 5B-B, further, in order to facilitate turning of the spin nut 42, two spin grips 43 are provided on the spin nut 42, the two spin grips 43 being disposed opposite to each other. The rotary handle 43 is made of screw steel or round steel with the diameter of 16mm and the length of 25cm, and the rotary handle 43 and the rotary nut 42 are connected in a welding mode.
As shown in fig. 4, in some embodiments, the high pressure sealing mechanism 50 includes a first adapter 51, a second adapter 52, a cowling washer 53, and a first ball valve 54, the first adapter 51 is connected to an end of the inner sleeve 20 remote from the expansion mechanism 30, the second adapter 52 is connected to the first adapter 51, the cowling washer 53 is disposed inside the second adapter 52, and the first ball valve 54 is disposed at an inlet of the second adapter 52.
Specifically, as can be seen from the figure, the first adapter 51 and the second adapter 52 each function to change the large-diameter opening into the small-diameter opening; the first conversion joint 51 adopts a one-size pipe connecting joint, the outer diameter size of the second conversion joint 52 is 60mm, one end of the second conversion joint is internally processed into trapezoidal threads, and the other end of the second conversion joint is externally processed into common threads; the connection of the second adapter 52 to the inner sleeve 20 is achieved by trapezoidal threads, and the connection of the second adapter 52 to the first adapter 51 is achieved by ordinary threads.
It will be appreciated that the first ball valve 54 employs a split valve and is mounted to the second adapter 52 for controlling the flow of slurry out of the cable line 100; the internal diameter size of cowling gasket 53 is 8mm, thickness is 6mm, places in the inside of second crossover sub 52, and anchor rope blast pipe 100 alternates through cowling gasket 53, and simultaneously, the screw thread connection that cowling gasket 53 passes through first crossover sub 51 and second crossover sub 52 realizes fastening, realizes the sealed control of anchor rope blast pipe 100, cowling gasket 53 and second crossover sub 52 before the back-sizing in the blast pipe when anchor rope 90 slip casting.
As shown in fig. 5 A-A, in some embodiments, the grout-feeding connection mechanism 60 includes a bead ring 61, a first connection pipe 62 and a second ball valve 63, the bead ring 61 is sleeved on a section of the inner sleeve 20 containing the grouting holes 21, a connection port is provided on the bead ring 61, the connection port communicates with the grouting holes 21, the first connection pipe 62 is provided on the connection port and communicates with the grouting holes 21, and the second ball valve 63 is provided in the first connection pipe 62. In detail, the diameter of the steel bar ring 61 is 10mm, the steel bar ring is circumferentially welded and connected with the inner sleeve 20 in a welding seam mode, the first connecting pipe 62 adopts 6 branch pipes and is aligned with a slurry inlet hole on the inner sleeve 20, the steel bar ring 61 and the inner sleeve 20 are connected together in a sealing manner in a welding manner, and two sides of the first connecting pipe 62 are welded and connected with the steel bar ring 61, so that slurry leakage and slurry leakage are avoided during grouting, and firm fixation during long-term use is ensured.
It will be appreciated that the second ball valve 63 is primarily used to control the flow of slurry out of the first connecting tube 62.
In some embodiments, the intelligent monitoring control mechanism 70 includes a flow and pressure intelligent monitor 71 and a second connecting pipe 72, an external thread 621 is disposed on an end of the first connecting pipe 62 far from the grouting hole 21, an internal thread 721 is disposed on an end of the second connecting pipe 72, the external thread 621 is connected with the internal thread 721 in a matching manner, and the flow and pressure intelligent monitor 71 is disposed on the second connecting pipe 72. In detail, the intelligent flow and pressure monitor 71 has the functions of parameter setting, automatic acquisition, storage, output and pressure alarm of data such as flow and pressure, and can be connected with an acquisition system to acquire data in real time.
Further, the high-pressure grouting control device for the anchor cable 90 further comprises a plug 80, and the plug 80 is arranged on the end face of one end of the inner sleeve 20 connected with the expansion mechanism 30. In detail, the plug 80 is provided with a bolt having an outer diameter of 70mm and a length of 50mm, in order to prevent the expansion mechanism 30 from falling off the inner sleeve 20 during the extrusion.
The embodiment also provides a control method for high-pressure grouting of the anchor cable 90, and the control device for high-pressure grouting of the anchor cable 90 provided by the embodiment is specifically as follows:
s1, binding an anchor rope 90 and an anchor rope exhaust pipe 100 together by adopting lead wires, and sending the anchor rope 90 and the anchor rope exhaust pipe 100 into a drill hole 10 of the anchor rope 90, and simultaneously, penetrating the anchor rope 90 and the anchor rope exhaust pipe 100 from a high-pressure grouting control device of the anchor rope 90 and coming out from one end of a first conversion connector 51;
s2, pushing the high-pressure grouting control device of the anchor rope 90 into the drill hole 10 of the anchor rope 90, and enabling the expansion rubber plug 31 and the steel gasket to enter one end of the drill hole 10 of the anchor rope 90 for a distance;
s3, rotating the rotating nut 42, pushing the movable sleeve 41 to squeeze the expansion rubber plug 31 to expand laterally, and tightly contacting the expansion rubber plug 31 with the wall of the drill hole 10 of the anchor cable 90 to realize high-pressure sealing in the hole;
s4, connecting the slurry inlet connecting mechanism 60 with the intelligent monitoring control component, and connecting a second connecting pipe 72 with the grouting pump; all the components in the high-pressure sealing mechanism 50 are connected, the high-pressure sealing mechanism 50 is ensured to achieve the high-pressure sealing effect, the first ball valve 54 and the second ball valve 63 are in an open state, and the intelligent flow and pressure monitor 71 is opened;
s5, after grouting is started, after the anchor cable exhaust pipe 100 is pulped out, the first ball valve 54 is quickly closed; after grouting reaches a design pressure value, the second ball valve 63 and the intelligent flow and pressure monitor 71 are quickly closed, and the grouting process is finished;
s6, after the slurry reaches the initial setting time, sequentially disassembling each part of the whole set of anchor cable 90 high-pressure grouting control device.
The anchor rope 90 high-pressure grouting control device provided by the embodiment has at least the following advantages:
1. the embodiment can be used as an engineering application product with mature industry, can be repeatedly used infinitely under the condition that spare and accessory parts are not damaged, solves the problem that a common anchor cable 90 grouting control device cannot be repeatedly used, and has low comprehensive cost.
2. The intelligent monitoring control mechanism 70 is adopted in the embodiment, so that the grouting condition can be monitored in real time, all evaluation data in the whole process can be obtained, the accurate evaluation of the full space-time grouting effect can be performed according to the monitoring data, and the grouting quality and effect are ensured.
3. The embodiment adopts the high-pressure sealing mechanism 50, can achieve the aim of high-pressure control, and the actually measured highest grouting control pressure can reach more than 30MPa, so that the embodiment has obvious advantages compared with the underground traditional anchor cable 90, namely, the grouting pressure is only 2-3MPa, and the problems of poor grouting uniformity and integrity caused by insufficient grouting pressure and further influence on the anchoring effect can be effectively solved.
4. The embodiment can be suitable for the use working conditions and types of different anchor cables 90, obtain all evaluation data of the whole grouting process, has the advantages of convenience in manufacturing, simplicity in operation process and reusability, can effectively realize the high-pressure grouting reinforcement effect on engineering surrounding rocks under complex geological conditions, and further improves the integrity and stability of the surrounding rocks.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-pressure grouting control device for the anchor cable is characterized by comprising an inner sleeve, an expansion mechanism, an extrusion mechanism, a high-pressure sealing mechanism, a grouting connecting mechanism and an intelligent monitoring control mechanism; the expansion mechanism is arranged at one end of the inner sleeve, the extrusion mechanism is arranged at the middle part of the inner sleeve and used for extruding the expansion mechanism to expand and closely contact with the wall of a drilled hole to realize high-pressure sealing in the hole, the high-pressure sealing mechanism is arranged at one end of the inner sleeve, which is far away from the expansion mechanism, the inner sleeve is provided with a grouting hole, the grouting connecting mechanism is connected with the grouting hole, and the intelligent monitoring control mechanism is arranged on the grouting connecting mechanism and used for carrying out real-time data monitoring on grouting conditions and acquiring evaluation data of the whole process.
2. The cable bolt high pressure grouting control device of claim 1, wherein the expansion mechanism comprises a plurality of expansion plugs and a plurality of steel washers, the plurality of expansion plugs and the plurality of steel washers are alternately arranged on the inner sleeve, and the extrusion mechanism is in contact with the steel washers when extruding the expansion mechanism.
3. The anchor cable high-pressure grouting control device according to claim 1, wherein the extrusion mechanism comprises a movable sleeve and a rotary nut, one end, far away from the expansion mechanism, of the inner sleeve is provided with a threaded section, the movable sleeve is movably arranged on the inner sleeve and is partially positioned on the threaded section, the rotary nut is arranged on the threaded section, when the rotary nut rotates positively, the rotary nut pushes the movable sleeve to move in a direction of extruding the expansion mechanism, and when the rotary nut rotates reversely, the rotary nut moves in a direction far away from the expansion mechanism.
4. A cable high pressure grouting control device according to claim 3, wherein the swivel nut is provided with two swivel handles, the two swivel handles being arranged opposite each other.
5. The anchor cable high-pressure grouting control device according to claim 1, wherein the high-pressure sealing mechanism comprises a first adapter, a second adapter, a cowhells washer and a first ball valve, the first adapter is connected to one end of the inner sleeve, which is far away from the expansion mechanism, the second adapter is connected to the first adapter, the cowhells washer is arranged inside the second adapter, and the first ball valve is arranged at the inlet of the second adapter.
6. The anchor cable high-pressure grouting control device according to claim 1, wherein the grouting connecting mechanism comprises a reinforcing bar ring, a first connecting pipe and a second ball valve, the reinforcing bar ring is sleeved on a section of the inner sleeve containing a grouting hole, a connecting port is arranged on the reinforcing bar ring and communicated with the grouting hole, the first connecting pipe is arranged on the connecting port and communicated with the grouting hole, and the second ball valve is arranged in the first connecting pipe.
7. The anchor cable high-pressure grouting control device according to claim 6, wherein the intelligent monitoring control mechanism comprises a flow and pressure intelligent monitor and a second connecting pipe, an external thread is arranged at one end of the first connecting pipe far away from the grouting hole, an internal thread is arranged at one end of the second connecting pipe, the external thread and the internal thread are connected in a matched mode, and the flow and pressure intelligent monitor is arranged on the second connecting pipe.
8. The anchor line high-pressure grouting control device according to claim 1, further comprising a plug provided on an end face of one end of the inner sleeve connected to the expansion mechanism.
9. The anchor cable high-pressure grouting control device according to claim 1, further comprising an anchor cable and an anchor cable exhaust pipe, wherein the anchor cable and the anchor cable exhaust pipe pass through the high-pressure sealing mechanism and the inner sleeve and are arranged in the drill hole, and the anchor cable exhaust pipe are bound together by lead wires.
10. An anchor cable high-pressure grouting control method based on the anchor cable high-pressure grouting control device of any one of claims 1-9, comprising:
s1, binding an anchor rope and an anchor rope exhaust pipe together by using a lead wire, and sending the anchor rope and the anchor rope exhaust pipe into an anchor rope drilling hole, and simultaneously, penetrating the anchor rope and the anchor rope exhaust pipe from an anchor rope high-pressure grouting control device and coming out from one end of a first adapter;
s2, pushing the anchor rope high-pressure grouting control device into an anchor rope drilling hole, and enabling the expansion rubber plug and the steel gasket to enter one end of the anchor rope drilling hole for a distance;
s3, rotating the rotating nut, pushing the movable sleeve to extrude the expansion rubber plug to expand laterally, and tightly contacting the expansion rubber plug with the wall of the anchor cable drilling hole to realize high-pressure sealing in the hole;
s4, connecting the slurry inlet connecting mechanism with the intelligent monitoring control component, and connecting a second connecting pipe with the slurry injection pump; all parts in the high-pressure sealing mechanism are connected, the high-pressure sealing mechanism is ensured to achieve a high-pressure sealing effect, the first ball valve and the second ball valve are in an open state, and the intelligent flow and pressure monitor is opened;
s5, after grouting is started, after the anchor cable exhaust pipe is pulped out, rapidly closing the first ball valve; after grouting reaches a design pressure value, the second ball valve, the flow and pressure intelligent monitor are quickly closed, and the grouting process is finished;
s6, after the slurry reaches the initial setting time, sequentially disassembling each part of the whole set of anchor cable high-pressure grouting control device.
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| CN113738423A (en) * | 2021-09-08 | 2021-12-03 | 中国矿业大学 | Coal mine tunnel ultrahigh-strength anti-bending shear anchor cable supporting device and supporting method |
| CN215860255U (en) * | 2021-10-15 | 2022-02-18 | 于守东 | Anti-overflow thick liquid is from expanding from big envelope and flexible slip casting stock |
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2024
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002097628A (en) * | 2000-09-22 | 2002-04-02 | Nittoc Constr Co Ltd | Supply return type hole filling packer and boring hole filling blocking construction method |
| CN101048573A (en) * | 2004-09-20 | 2007-10-03 | 阿特拉斯·科普柯·迈有限公司 | An elongate element tensioning member |
| CN106381871A (en) * | 2016-08-31 | 2017-02-08 | 西安长庆科技工程有限责任公司 | Anchor cable secondary grouting control system and method |
| CN109057840A (en) * | 2018-08-20 | 2018-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress |
| CN109026101A (en) * | 2018-09-13 | 2018-12-18 | 于守东 | A kind of mining anchor dispensing device and its application method |
| CN113738423A (en) * | 2021-09-08 | 2021-12-03 | 中国矿业大学 | Coal mine tunnel ultrahigh-strength anti-bending shear anchor cable supporting device and supporting method |
| CN215860255U (en) * | 2021-10-15 | 2022-02-18 | 于守东 | Anti-overflow thick liquid is from expanding from big envelope and flexible slip casting stock |
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| CN117605512B (en) | 2024-04-19 |
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