CN115596449A - Novel advanced small guide pipe capable of locally enlarging grouting range and installation method - Google Patents
Novel advanced small guide pipe capable of locally enlarging grouting range and installation method Download PDFInfo
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- CN115596449A CN115596449A CN202211114183.0A CN202211114183A CN115596449A CN 115596449 A CN115596449 A CN 115596449A CN 202211114183 A CN202211114183 A CN 202211114183A CN 115596449 A CN115596449 A CN 115596449A
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- 238000009434 installation Methods 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 120
- 239000011435 rock Substances 0.000 claims abstract description 36
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 29
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 29
- 241001330002 Bambuseae Species 0.000 claims description 29
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 29
- 239000011425 bamboo Substances 0.000 claims description 29
- 238000007569 slipcasting Methods 0.000 claims description 23
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 239000011440 grout Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a novel advanced small guide pipe capable of locally enlarging a grouting range, which comprises a pipe head, a grouting barrel, a local grouting reinforcing mechanism and a plurality of grouting holes, wherein the pipe head is connected with one end of the grouting barrel, the grouting holes are uniformly arranged on the side wall of the grouting barrel at intervals, the local grouting reinforcing mechanism is arranged inside the grouting barrel and comprises a rolling bearing, a first overhanging connecting piece, a connecting shaft, a plurality of first spiral mechanisms and a plurality of second spiral mechanisms, the rolling bearing is arranged on the end face of the pipe head connected with the grouting barrel, the first overhanging connecting piece comprises a plurality of first connecting rods, the first connecting rods are arranged inside the rolling bearing, the movable ends of the first connecting rods are respectively inserted and fixed with corresponding grooves on the connecting shaft, and the first spiral mechanisms and the second spiral mechanisms are sleeved on the connecting shaft. The invention can solve the problems that the grouting range of the existing advanced small conduit is small and the grouting range cannot be locally enlarged at certain specific weak surrounding rock parts.
Description
Technical Field
The invention belongs to the technical field of tunnel advance support, and particularly relates to a novel advanced small guide pipe capable of locally enlarging a grouting range and an installation method.
Background
In the tunnel construction process, accidents of collapse and instability of surrounding rocks caused by the existence of weak broken rock masses are frequent, the strength of the weak broken rock masses is low, the anti-interference capability is poor, and the surrounding rocks are easy to be disturbed to be unstable during construction. In order to prevent collapse of weak surrounding rock, the rock layer above the weak surrounding rock is usually pretreated by adopting a forepoling technology before the tunnel face is excavated.
The advanced small guide pipe is used as a common advanced support mode in actual tunnel construction, and has the advantages of simple construction equipment, simple process and strong grouting adaptability. During actual construction, grouting is conducted into the small guide pipes, so that the tunnel surrounding rock, the small guide pipes and the small guide pipe grouting reinforcement area are solidified, a shed frame supporting system is formed within a certain range, and the stability of the surrounding rock is improved.
The purpose of enlarging the grouting range is achieved only by applying certain grouting pressure during grouting of the traditional advanced small guide pipe, the actual grouting reinforcement range is small, and the local enlarging grouting range cannot be performed on certain specific weak surrounding rock parts. Therefore, there is a need to design a new advanced small conduit that can locally increase the grouting range.
Disclosure of Invention
The invention provides a novel advanced small guide pipe capable of locally enlarging a grouting range and an installation method, and solves the problems that the traditional advanced small guide pipe is small in grouting range and the grouting range cannot be locally enlarged on certain specific weak surrounding rock parts.
The invention provides a novel advanced small guide pipe capable of locally enlarging a grouting range, which comprises a pipe head, a grouting cylinder, a local grouting enhancement mechanism and a plurality of grouting holes, wherein the pipe head is provided with a plurality of grouting holes;
the both ends opening of a slip casting section of thick bamboo, the tube head is connected with the one end of a slip casting section of thick bamboo, and on a plurality of injected holes evenly spaced apart located the lateral wall of a slip casting section of thick bamboo, local slip casting reinforcing mechanism set up in the inside of a slip casting section of thick bamboo.
Preferably, local slip casting reinforcing mechanism contains antifriction bearing, first overhanging connecting piece, connecting axle and a plurality of first screw mechanism and a plurality of second screw mechanism, antifriction bearing sets up on the tube head terminal surface of being connected with the slip casting section of thick bamboo, first overhanging connecting piece contains a plurality of head rods, a plurality of head rod intervals set up in antifriction bearing's inside, evenly spaced apart along the circumferencial direction on the connecting axle lateral surface is equipped with a plurality of recesses that are parallel to each other, the both ends of recess are linked together with the both ends of connecting axle respectively, the quantity and the position of recess respectively with the quantity and the position phase-match of head rod, the expansion end of a plurality of head rods is pegged graft fixedly with the recess that corresponds on the connecting axle respectively, a plurality of first screw mechanism and a plurality of second screw mechanism overlap in proper order and locate on the connecting axle.
Preferably, each first screw mechanism comprises a first screw blade sleeve mechanism and a first screw blade, the first screw blade is arranged on the outer side surface of the first screw blade sleeve mechanism, the second screw mechanism comprises a second screw blade sleeve mechanism and a second screw blade, the second screw blade is arranged on the outer side surface of the second screw blade sleeve mechanism, and the first screw blade sleeve mechanism and the second screw blade sleeve mechanism are identical in structure.
Preferably, every first spiral leaf sleeve mechanism contains the second and stretches connecting piece and an installation section of thick bamboo outward, the second stretches the connecting piece outward and contains a plurality of second connecting rods, a plurality of second connecting rods set up on the inside wall of an installation section of thick bamboo along the length direction interval that is parallel to each other of an installation section of thick bamboo, the quantity position of a plurality of second connecting rods all with the quantity and the position phase-match of a plurality of recesses, the installation section of thick bamboo is pegged graft through the recess that corresponds on a plurality of second connecting rods and the connecting axle, first helical blade sets up on the lateral surface of an installation section of thick bamboo.
Preferably, the length of the second connecting rod is the same as that of the mounting cylinder, one end of the second connecting rod is located on the inner side of the mounting cylinder, and the other end of the second connecting rod extends to the outer side of the mounting cylinder.
Preferably, the radius of rotation of the first helical blade is smaller than the radius of rotation of the second helical blade.
Preferably, the rotation radius of the second helical blade is smaller than the inner diameter of the grouting barrel by 1cm.
Preferably, the movable end of the connecting shaft is provided with a cover plate, and the cover plate is positioned on the outer side of the first screw mechanism or the second screw mechanism which is farthest away from the tube head.
Preferably, the tube head is of an inverted cone structure.
The second purpose of the invention is to provide a method for installing the novel leading small conduit capable of locally increasing the grouting range, which comprises the following steps:
s1, determining the specific position of the weak surrounding rock, and marking the corresponding part with poor surrounding rock conditions and the part with relatively good surrounding rock conditions on a connecting shaft according to the specific position of the weak surrounding rock;
s2, arranging a rolling bearing at the bottom of the tube head, arranging a first outward extending connecting piece in the rolling bearing, inserting a movable end of the first outward extending connecting piece into a groove on a connecting shaft, and connecting a first spiral blade sleeve mechanism and a second spiral blade sleeve mechanism with a first spiral blade and a second spiral blade respectively to form a first spiral mechanism and a second spiral mechanism;
and S3, mounting a second spiral mechanism on the connecting shaft at a position corresponding to the part marked by the step S1 with poor surrounding rock conditions, mounting a first spiral mechanism on the connecting shaft at a position corresponding to the part marked by the step S1 with relatively good surrounding rock conditions, repeatedly performing mounting operation until all the first spiral mechanisms or the second spiral mechanisms are mounted on the connecting shaft, arranging a cover plate at the movable end of the connecting shaft, fixing the first spiral mechanisms and the second spiral mechanisms, sleeving the grouting barrel outside the local grouting reinforcement mechanism, and fixedly connecting one end of the grouting barrel with the pipe head to obtain the advanced small pipe.
Compared with the prior art, the invention has the beneficial effects that:
according to the novel advanced small conduit capable of locally enlarging the grouting range, the grouting pressure borne by the spiral blade can be converted into the forward pressure stress and the circumferential shear stress through the local grouting reinforcement mechanism, the slurry enters the cylindrical pipe body under the pushing action of the forward pressure stress, the circumferential shear stress enables the spiral blade to rotate, the slurry enters the small conduit along with the spiral blade in a spiral manner, the slurry conveying is changed from the traditional horizontal path into the spiral path, the time of the slurry passing through a grouting hole is increased, and the grouting range is remarkably enlarged; the centrifugal force generated when the helical blade rotates shortens the time for the slurry to pass through the grouting hole, and the effect of enlarging the grouting range is also achieved; the time required for the slurry to pass through the second spiral blade is longer than that of the first spiral blade, and the slurry can be freely combined according to surrounding rock conditions during installation, so that the aim of locally enlarging the grouting range of the specified position is fulfilled.
Drawings
FIG. 1 is a perspective view of a novel advanced small conduit capable of locally increasing the grouting range according to an embodiment of the present invention;
FIG. 2 is a perspective view of a novel advanced ductwork for locally increasing the grouting area according to an embodiment of the present invention;
FIG. 3 is an exploded view of a novel advanced ductwork for locally increasing the grouting area according to an embodiment of the present invention;
FIG. 4 is an exploded view of the cover plate and the connecting shaft according to the embodiment of the present invention;
FIG. 5 is a schematic view showing a connection structure of a rolling bearing and a first outwardly extending connecting member in the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a first helical lobe sleeve mechanism in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of the first helical blade sleeve mechanism in another view according to the embodiment of the present invention;
fig. 8 is a schematic view of a connection structure of the first helical blade sleeve mechanism or the second helical blade sleeve mechanism and the connection shaft in the embodiment of the invention;
FIG. 9 is a schematic structural view of a first helical blade and a second helical blade in an embodiment of the present invention;
FIG. 10 is a schematic view of the connection structure of the first helical blade and the second helical blade with the first helical blade sleeve mechanism and the second helical blade sleeve mechanism, respectively, in the embodiment of the invention;
fig. 11 is a schematic view of a connection structure of the first screw mechanism and the second screw mechanism with the connection shaft in the embodiment of the present invention;
in the figure: 1. a pipe head; 2. a grouting cylinder; 3. grouting holes; 4. a local grouting enhancement device; 5. a connecting shaft; 6. a cover plate; 7. a rolling bearing; 8. a first overhanging link; 9. mounting the cylinder; 10. a first helical blade; 11. a second helical blade; 12. a first helical blade sleeve mechanism; 13. a second helical blade sleeve mechanism; 14. a second externally extending connecting piece; 15. and (4) a groove.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1 to 11, the embodiment of the present invention provides a novel advanced small duct capable of locally increasing a grouting range, which includes a pipe head 1, a grouting cylinder 2, a local grouting reinforcement mechanism 4, and a plurality of grouting holes 3;
the both ends opening of a slip casting section of thick bamboo 2, tube head 1 is connected with the one end of a slip casting section of thick bamboo 2, and on a plurality of grouting holes 3 evenly spaced apart located the lateral wall of a slip casting section of thick bamboo 2, local slip casting reinforcing mechanism 4 set up in the inside of a slip casting section of thick bamboo 2.
Local slip casting reinforcing means 4 contains antifriction bearing 7, first overhanging connecting piece 8, connecting axle 5, a plurality of first screw mechanism 12 and a plurality of second screw mechanism 13, antifriction bearing 7 welding sets up on the tube head 1 terminal surface of being connected with slip casting section of thick bamboo 2, connecting axle 5 adopts the aluminum alloy material, through antifriction bearing 7's design, can be when receiving grouting pressure, local slip casting reinforcing means 4 can carry out 360 rotations in slip casting section of thick bamboo 2 along antifriction bearing 7, first overhanging connecting piece 8 contains a plurality of head rods, a plurality of head rods interval welding sets up in antifriction bearing 7's inside, evenly spaced apart along the circumferencial direction on the connecting axle 5 lateral surface is equipped with a plurality of recesses 15 that are parallel to each other, the both ends of recess 15 are linked together with the both ends of connecting axle 5 respectively, the quantity and the position phase-match of head rod respectively of recess 15, the expansion end of a plurality of head rods is pegged graft and welded fastening with the recess 15 that corresponds on the connecting axle 5 respectively, a plurality of first screw mechanism 12 and a plurality of second screw mechanism 13 overlap in proper order and locate on connecting axle 5.
After the whole device is installed, the connecting shaft 5 is wrapped by the installation barrel 9 to form a first protection, the rotating radius of the second spiral blade 11 is 1cm smaller than the inner diameter of the grouting barrel 2, when grouting is carried out, grout can make up the space area of the 1cm, the pipe is similar to a solid structure but can rotate, so that the whole second protection can be taken as the protection, after grouting is started, the connecting shaft 5 can start to rotate, under the action of rotating force, the force of the grout can be decomposed, impact on the whole assembly structure can be reduced, a third protection layer is formed, only one end of the connecting shaft 5 is firmly welded with the first outwards extending connecting piece 8 on the rolling bearing 7, and fixing of the connecting shaft 5 can be achieved.
Every first screw mechanism 12 contains first spiral leaf sleeve mechanism and first helical blade 10, and first helical blade 10 welding sets up on the lateral surface of first spiral leaf sleeve mechanism, and second screw mechanism 13 contains second spiral leaf sleeve mechanism and second helical blade 11, and second helical blade 11 welding sets up on the lateral surface of second spiral leaf sleeve mechanism, and first spiral leaf sleeve mechanism is the same with the structure of second spiral leaf sleeve mechanism.
Every first spiral blade sleeve mechanism contains the second and stretches connecting piece 14 and installation section of thick bamboo 9 outward, the second stretches connecting piece 14 outward and contains a plurality of second connecting rods, a plurality of second connecting rods set up on the inside wall of installation section of thick bamboo 9 along the length direction interval welding that is parallel to each other of installation section of thick bamboo 9, the quantity position of a plurality of second connecting rods all with a plurality of recess 15's quantity and position phase-match, installation section of thick bamboo 9 is pegged graft through the recess 15 that corresponds on a plurality of second connecting rods and the connecting axle 5, first helical blade 10 welds and sets up on the lateral surface of installation section of thick bamboo 9. The first and second overhanging connectors 8, 14 in the embodiment of the invention are identical in structure and size, and the number of the first and second connecting rods and the grooves is preferably 4.
Specifically, the bottom of the mounting cylinder 9 on the latter first helical blade sleeve mechanism or the second helical blade sleeve mechanism is inserted into the corresponding groove 15 on the connecting shaft 5, and the end of the first outward extending connecting piece 8 or the second outward extending connecting piece 14 on the mounting cylinder is abutted against the movable end of the first outward extending connecting piece 8 or the second outward extending connecting piece 14 of the mounting cylinder 9 on the former first helical blade sleeve mechanism or the second helical blade sleeve mechanism for combined connection, and the steps are repeated so as to completely mount all the first helical blade sleeve mechanisms or the second helical blade sleeve mechanisms on the connecting shaft 5.
The length of second connecting rod is the same with the length of installation section of thick bamboo 9, just the one end of second connecting rod is located the inboard of installation section of thick bamboo 9, and the other end extends to the outside of installation section of thick bamboo 9. Due to the design, the first spiral blade sleeve mechanism or the second spiral blade sleeve mechanism can be conveniently spliced with the first spiral blade sleeve mechanism or the second spiral blade sleeve mechanism to realize stable connection.
The radius of rotation of the first helical blade 10 is smaller than the radius of rotation of the second helical blade 11. Through such design can make thick liquid pass through second helical blade 11 required time and be greater than first helical blade 10, so according to the concrete position of weak country rock correspondingly install first helical mechanism 12 and a plurality of second helical mechanism 13 on connecting axle 5 and can realize carrying out the target of local increase slip casting scope to the assigned position, specifically be, second helical blade 11 is selected for use to the position that the country rock condition is poor, first helical blade 10 is selected for use to the country rock condition is better relatively.
The radius of rotation of the second helical blade 11 is 1cm smaller than the inner diameter of the barrel 2. Such design can guarantee that first helical blade 10 and second helical blade 11 all can carry out smooth rotation in slip casting section of thick bamboo 2.
The movable end of the connecting shaft 5 is welded with a cover plate 6, and the cover plate 6 is positioned at the outer side of the first screw mechanism 12 or the second screw mechanism 13 which is farthest away from the tube head 1. By designing the cover plate 6, the plurality of first screw mechanisms 12 and the plurality of second screw mechanisms 13 can be integrally fixed, and the grouting range can be locally increased.
The pipe head 1 is of an inverted cone structure.
The invention also provides a novel installation method of the advanced small guide pipe capable of locally enlarging the grouting range, which specifically comprises the following steps:
s1, determining the specific position of the weak surrounding rock, and marking the corresponding part with poor surrounding rock conditions and the part with relatively good surrounding rock conditions on a connecting shaft 5 according to the specific position of the weak surrounding rock;
s2, arranging a rolling bearing 7 at the bottom of the tube head 1, arranging a first outward extending connecting piece 8 in the rolling bearing 7, inserting a movable end of the first outward extending connecting piece 8 into a groove on a connecting shaft 5, and respectively connecting a first spiral blade sleeve mechanism and a second spiral blade sleeve mechanism with a first spiral blade 10 and a second spiral blade 11 to form a first spiral mechanism and a second spiral mechanism;
and S3, mounting a second screw mechanism 13 at a position corresponding to the part marked by the step S1 on the connecting shaft 5 with poor surrounding rock conditions, mounting a first screw mechanism 12 at a position corresponding to the part marked by the step S1 on the connecting shaft 5 with relatively good surrounding rock conditions, repeatedly performing mounting operation until all the first screw mechanisms 12 or the second screw mechanisms 13 are mounted on the connecting shaft 5, arranging a cover plate 6 at the movable end of the connecting shaft 5, fixing the first screw mechanisms 12 and the second screw mechanisms 13, sleeving the grouting cylinder 2 outside the local grouting reinforcement mechanism 4, and fixedly connecting one end of the grouting cylinder 2 with the pipe head 1 to obtain the advanced small pipe.
When the novel advanced small conduit capable of locally increasing the grouting range is used, the advanced small conduit is firstly installed at a corresponding position, then grouting is carried out through the opening end of the advanced small conduit, after grout enters the grouting barrel 2, the first spiral blade 10 and the second spiral blade 11 are subjected to grouting pressure, then the grouting pressure is converted into forward pressure stress and annular shear stress, the grout continues to enter the grouting barrel 2 forward under the pushing action of the forward pressure stress, the first spiral blade 10 and the second spiral blade 11 rotate around the rolling bearing 7 in the grouting barrel 2 due to the annular shear stress, the grout enters the inside of the grouting barrel 2 along with the spiral of the first spiral blade 10 and the second spiral blade 11, the grout is conveyed from a traditional horizontal path to a spiral path, the time of the grout passing through the grouting hole 3 is increased, and the grouting range is remarkably increased; the centrifugal force generated when the first helical blade 10 and the second helical blade 11 rotate shortens the time for the grout to pass through the grouting hole, and also has the effect of enlarging the grouting range, and because the time required for the grout to pass through the second helical blade 11 is longer than that of the first helical blade 10, the first helical mechanism 12 and the second helical mechanism 13 are correspondingly arranged on the connecting shaft 5 according to the specific position of the weak surrounding rock, so that the aim of locally enlarging the grouting range of the specified position can be achieved.
The embodiment of the invention is not only limited to the aim of locally enlarging the grouting range at the specified position, but also can integrally reinforce the area with poor surrounding rock conditions in the actual engineering. The second screw mechanism 13 is only required to be completely installed on the connecting shaft 5 of the local grouting reinforcement device 4.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A novel advanced small guide pipe capable of locally enlarging a grouting range is characterized by comprising a pipe head (1), a grouting cylinder (2), a local grouting enhancement mechanism (4) and a plurality of grouting holes (3);
the both ends opening of a slip casting section of thick bamboo (2), tube head (1) are connected with the one end of a slip casting section of thick bamboo (2), and on a plurality of injected holes (3) evenly spaced apart located the lateral wall of a slip casting section of thick bamboo (2), local slip casting reinforcing mechanism (4) set up in the inside of a slip casting section of thick bamboo (2).
2. The novel advanced small conduit capable of locally enlarging the grouting range according to claim 1, wherein the local grouting reinforcement mechanism (4) comprises a rolling bearing (7), a first overhanging connector (8), a connecting shaft (5), a plurality of first screw mechanisms (12) and a plurality of second screw mechanisms (13), the rolling bearing (7) is arranged on the end face of the pipe head (1) connected with the grouting barrel (2), the first overhanging connector (8) comprises a plurality of first connecting rods arranged inside the rolling bearing (7) at intervals, a plurality of grooves (15) which are parallel to each other are uniformly arranged on the outer side face of the connecting shaft (5) at intervals along the circumferential direction, two ends of the grooves (15) are respectively communicated with two ends of the connecting shaft (5), the number and positions of the grooves (15) are respectively matched with the number and positions of the first connecting rods, the movable ends of the plurality of first connecting rods are respectively inserted and fixed with the corresponding grooves (15) on the connecting shaft (5), and the plurality of first screw mechanisms (12) and the plurality of second screw mechanisms (13) are sequentially sleeved on the connecting shaft (5).
3. The new type of leading microcatheter capable of locally increasing the grouting range as claimed in claim 2, wherein each of said first screw mechanisms (12) comprises a first screw blade sleeve mechanism and a first screw blade (10), the first screw blade (10) is disposed on the outer side surface of the first screw blade sleeve mechanism, the second screw mechanism (13) comprises a second screw blade sleeve mechanism and a second screw blade (11), the second screw blade (11) is disposed on the outer side surface of the second screw blade sleeve mechanism, and the first screw blade sleeve mechanism and the second screw blade sleeve mechanism have the same structure.
4. A novel advanced small guide pipe capable of locally increasing the grouting range according to claim 3, wherein each first spiral blade sleeve mechanism comprises a second externally extending connecting piece (14) and a mounting cylinder (9), the second externally extending connecting piece (14) comprises a plurality of second connecting rods, the second connecting rods are arranged on the inner side wall of the mounting cylinder (9) in parallel at intervals along the length direction of the mounting cylinder (9), the number and the position of the second connecting rods are matched with the number and the position of the grooves (15), the mounting cylinder (9) is inserted into the corresponding grooves on the connecting shaft (5) through the second connecting rods, and the first spiral blades (10) are arranged on the outer side surface of the mounting cylinder (9).
5. A novel leading small pipe capable of locally increasing the grouting range as claimed in claim 4, characterized in that the length of the second connecting rod is the same as that of the installation cylinder (9), one end of the second connecting rod is positioned at the inner side of the installation cylinder (9), and the other end of the second connecting rod extends to the outer side of the installation cylinder (9).
6. A new type of leading ductus according to claim 3, which can locally increase the grouting range, characterized in that the radius of rotation of the first helical blade (10) is smaller than the radius of rotation of the second helical blade (11).
7. A novel leading ductus reducer with locally increased grouting range according to claim 3, characterized in that the radius of rotation of the second helical blade (11) is 1cm smaller than the inner diameter of the grouting barrel (2).
8. A novel leading microcatheter capable of locally increasing the grouting range according to claim 2, characterized in that the movable end of the connecting shaft (5) is provided with a cover plate (6), and the cover plate (6) is located outside the first screw mechanism (12) or the second screw mechanism (13) farthest from the pipe head (1).
9. A new type of advanced small guide pipe with local increase of grouting scope as claimed in claim 1, characterized by that the pipe head (1) is of reverse taper structure.
10. A method for installing a novel leading small pipe capable of locally increasing the grouting range according to any one of claims 1 to 9, which comprises the following steps:
s1, determining the specific position of the weak surrounding rock, and marking the corresponding part with poor surrounding rock conditions and the part with relatively good surrounding rock conditions on a connecting shaft (5) according to the specific position of the weak surrounding rock;
s2, arranging a rolling bearing (7) at the bottom of the tube head (1), arranging a first outward extending connecting piece (8) in the rolling bearing (7), inserting a movable end of the first outward extending connecting piece (8) into a groove (15) in a connecting shaft (5), and connecting a first spiral blade sleeve mechanism and a second spiral blade sleeve mechanism with a first spiral blade (10) and a second spiral blade (11) respectively to form a first spiral mechanism and a second spiral mechanism;
s3, installing a second spiral mechanism (13) on the connecting shaft (5) at a position corresponding to the part marked by the step S1 and having poor surrounding rock conditions, installing a first spiral mechanism (12) on the connecting shaft (5) at a position corresponding to the part marked by the step S1 and having relatively good surrounding rock conditions, repeatedly executing installation operation until all the first spiral mechanisms (12) or the second spiral mechanisms (13) are installed on the connecting shaft (5), arranging a cover plate (6) at the movable end of the connecting shaft (5), fixing the first spiral mechanisms (12) and the second spiral mechanisms (13), then sleeving the grouting cylinder (2) at the outer side of the local grouting reinforcement mechanism (4), and fixedly connecting one end of the grouting cylinder (2) with the pipe head (1), so that the advanced small pipe is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114183.0A CN115596449A (en) | 2022-09-14 | 2022-09-14 | Novel advanced small guide pipe capable of locally enlarging grouting range and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114183.0A CN115596449A (en) | 2022-09-14 | 2022-09-14 | Novel advanced small guide pipe capable of locally enlarging grouting range and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115596449A true CN115596449A (en) | 2023-01-13 |
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ID=84843060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211114183.0A Pending CN115596449A (en) | 2022-09-14 | 2022-09-14 | Novel advanced small guide pipe capable of locally enlarging grouting range and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115596449A (en) |
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2022
- 2022-09-14 CN CN202211114183.0A patent/CN115596449A/en active Pending
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