CN114718046B - Sleeve valve pipe grouting structure for deep filling layer and construction method of sleeve valve pipe grouting structure - Google Patents
Sleeve valve pipe grouting structure for deep filling layer and construction method of sleeve valve pipe grouting structure Download PDFInfo
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- CN114718046B CN114718046B CN202210433281.4A CN202210433281A CN114718046B CN 114718046 B CN114718046 B CN 114718046B CN 202210433281 A CN202210433281 A CN 202210433281A CN 114718046 B CN114718046 B CN 114718046B
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 29
- 238000005553 drilling Methods 0.000 claims description 20
- 239000002689 soil Substances 0.000 claims description 20
- 239000004570 mortar (masonry) Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims 3
- 239000002002 slurry Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011440 grout Substances 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention relates to the technical field of filling layer grouting, in particular to a sleeve valve pipe grouting structure for a deep filling layer and a construction method thereof. The grouting core pipe mainly aims at the problems that the connection tightness of the grouting core pipe of the grouting structure used in the existing deep filling layer is to be improved, and the position of each section of grouting is inconvenient to locate, and the following technical scheme is provided: the grouting device comprises a grouting pipe and a grouting core pipe, wherein the grouting pipe comprises a plurality of sections of grouting connecting pipes, grouting connecting sleeves are arranged on the outer rings of the joints of the grouting connecting pipes, and one end of the bottom of each grouting connecting pipe is connected with a plugging head. The grouting structure is novel and compact in structure, is compact and high in connection between grouting core pipes, is suitable for high-pressure grouting operation, does not leak or leak slurry, has neat inner wall of the sleeve valve pipe, is convenient to construct continuously, is convenient to position grouting positions of the grouting pipe, reduces operation time, is suitable for being more efficient and convenient, and is mainly applied to grouting structures of deep-fill sleeve valve pipes.
Description
Technical Field
The invention relates to the technical field of filling layer grouting, in particular to a sleeve valve pipe grouting structure for a deep filling layer and a construction method thereof.
Background
The construction engineering is a method for injecting certain curable slurry into cracks or pores of a rock-soil foundation by a proper method, and improving the physical and mechanical properties of the slurry by means of replacement, filling, extrusion and the like; the construction surface is positioned on the backfill layer, the depth is limited due to dynamic compaction according to the requirement of the bearing capacity of the foundation, and the backfill soil is mostly large-scale weathered rocks, miscellaneous fill and construction waste, and the soil quality at the lower part of the backfill layer is loose according to the on-site foundation excavation condition, so that the deep backfill layer is difficult to form soil consolidation in a short time, and sedimentation is extremely easy to generate. In order to accelerate the consolidation of the backfill layer and prevent the uneven settlement of the ground, the compaction grouting foundation is needed to treat the deep fill layer. Grouting construction is generally carried out by adopting sleeve valve pipes.
In the scheme, the grouting sleeve valve pipe is provided in the Chinese patent CN201908308U, and grouting can be performed by limiting grouting liquid in any section range of a grouting area through an upper grouting stop plug and a lower grouting stop plug, so that the purpose of sectional grouting is achieved, and a grouting stop plug is formed by arranging a grouting stop rubber cup, so that a grouting stop effect is achieved; however, in actual grouting operation, the compactness of the joint is particularly important because of the segmented connection of the grouting core tubes, but the sealing effect is poor because the grouting core tubes are connected in a threaded manner, the sealing effect is to be improved, meanwhile, the existing grouting core tubes are not well positioned, and the grouting fixed point position of each segment is obtained through manual repeated calculation; in view of the above, we propose a sleeve valve pipe grouting structure for deep fill layers and a construction method thereof.
Disclosure of Invention
The invention aims at solving the problems that the connection tightness of a grouting core pipe of a grouting structure used for a deep and thick filling layer in the prior art needs to be improved and the position of each section of grouting is inconvenient to locate, and provides a sleeve valve pipe grouting structure for the deep and thick filling layer and a construction method thereof.
The technical scheme of the invention is as follows: the sleeve valve pipe grouting structure for the deep filling layer comprises a grouting pipe and a grouting core pipe, wherein the grouting pipe comprises a plurality of sections of grouting connecting pipes, grouting connecting sleeves are arranged on the outer ring of the joint of the two grouting connecting pipes, and one end of the bottom of each grouting connecting pipe is connected with a plugging head;
a grouting core pipe is arranged in the grouting pipe, the grouting core pipe comprises a plurality of sections of core pipe connecting pipes, a tightening mechanism is arranged at the joint between the two core pipe connecting pipes, a grouting flower pipe is arranged at the bottom of the grouting core pipe at the bottommost end, grouting plugs are arranged at the two ends of the grouting flower pipe, guide grooves are symmetrically formed in the inner wall of the grouting connecting pipe, and a rubber gasket is connected at the bottom of the grouting plug connected with the bottom of the grouting flower pipe;
the connecting screw thread pipe is arranged at one end of the core pipe connecting pipe, the locating ring is fixedly sleeved on the outer ring of the other end of the core pipe connecting pipe, the tightening mechanism comprises a first arc-shaped plate and a second arc-shaped plate, one sides of the first arc-shaped plate and the second arc-shaped plate are rotationally connected, the connecting plate is arranged on the second arc-shaped plate, and the first arc-shaped plate is provided with a limiting groove.
Preferably, one side of the first arc-shaped plate and the second arc-shaped plate which are connected in a rotating way is provided with a fixed block connected to the outer wall of the first arc-shaped plate, the bottom of the fixed block is connected with a positioning bolt, the top of the positioning ring is provided with a positioning groove, and the positioning bolt is correspondingly installed with the positioning groove.
Preferably, the inner rings of the first arc plate and the second arc plate are connected with sealing gaskets, one side inner wall of each sealing gasket is connected with a sealing block, a bolt is connected to the connecting plate in a rotating mode, the bolt is connected with the limiting groove in an adaptive mode, and the maximum outer diameter of the first arc plate and the maximum outer diameter of the second arc plate are smaller than the maximum outer diameter of the positioning ring.
Preferably, the inner wall of one end of the core pipe connecting pipe adjacent to the positioning ring is provided with a thread groove, and the thread groove is installed in an adaptive manner with the connecting thread pipe.
Preferably, the guide slot is an arc slot, the sections of the two ends of the rubber gasket are arc surfaces, the rubber gasket is a low-elasticity rubber gasket, the grouting plug sleeve is arranged on the outer ring of the grouting pipe, and the connecting threaded pipe is in threaded connection with the inner wall of the top of the grouting pipe.
Preferably, the grouting flower pipe is provided with a grouting core pipe grouting port, the grouting connecting pipe is provided with a grouting port, and the grouting port is internally provided with a one-way valve.
Preferably, the outer rings at the two ends of the grouting connecting pipe are respectively provided with a thread groove, the inner ring of the grouting connecting sleeve is provided with connecting threads, the grouting connecting sleeve is rotationally connected with the grouting connecting pipe, and the plugging head is rotationally connected with the grouting connecting pipe through threads.
A construction method for a deep filling layer sleeve valve pipe grouting structure comprises the following steps:
s1, measuring and positioning a drilling machine: positioning the drilling position according to the soil layer data measuring and calculating result, and positioning the drilling through a drilling machine;
s2, assembling a sleeve valve tube: the grouting pipe and the grouting core pipe are assembled according to the pouring depth of the soil layer, the length of the grouting pipe is larger than the drilling depth, and each section of core pipe connecting pipe in the grouting core pipe is connected in a sealing manner through a tightening mechanism;
s3, installing a sleeve valve pipe: after the sleeve valve pipe is pushed downwards and installed corresponding to the drilling position in the S1, the grouting core pipe is inserted into the grouting pipe, and one end of the blocking head is in abutting installation with the inner wall of the bottom of the grouting pipe;
s4, preparing mortar: the proportion of mortar is customized according to the soil layer requirement, the mortar is mixed by stirring equipment, and the grouting core pipe is rotated after the grouting operation is completed by a grouting machine, and the pipe is collected in a segmented mode;
s5, monitoring and detecting: and detecting soil layer pressure and other data after sectional grouting, and performing next grouting operation after the soil layer pressure and other data are qualified.
Preferably, in the S2 assembled sleeve valve pipe, grease is smeared on the gap of the grouting connecting sleeve close to the grouting connecting pipe and the inner wall of the grouting connecting sleeve to avoid solidification and disassembly of mortar, abrasion of screw threads is reduced, and the grouting core pipe is rotated in the S4 to rotate and separate the rubber gasket from the guide groove, so that rotation pressure is reduced.
Preferably, the step of collecting the pipe in the step S4 includes the following steps: disassembling the tightening mechanism, namely opening and disassembling the tightening mechanism from the outer ring of the core pipe connecting pipe, and separating the positioning bolt from the positioning groove on the positioning ring; rotating one of the core tube connecting pipes at the top causes the connecting threaded pipe to rotate away from the inner wall of the core tube connecting pipe at the bottom.
Compared with the prior art, the invention has the following beneficial technical effects:
1. after the core pipe connecting pipe is assembled through the rotation of the connecting threaded pipe by the tightening mechanism and the positioning ring, the positioning bolt is correspondingly installed with the positioning groove formed in the top of the positioning ring, meanwhile, the arc-shaped plate I and the arc-shaped plate II are rotated, so that the arc-shaped plate I and the arc-shaped plate II tightly abut against the outer wall of the connecting part of the core pipe connecting pipe through the sealing gasket of the inner wall, one end of the sealing block is attached to the inner wall of one end of the sealing gasket, meanwhile, the bolt is correspondingly assembled with the limiting groove through the arrangement of the connecting plate and the bolt, and the connection tightness between the outer ring of the core pipe connecting pipe and the tightening mechanism is improved by combining the arrangement of the arc-shaped plate I, the arc-shaped plate II and the sealing gasket and the sealing block, so that the seepage of mortar in grouting is avoided;
2. according to the invention, through the arrangement of the rubber gasket and the guide groove, when one section of grouting operation is finished, the lower end grouting operation is carried out, the rubber gasket at the bottom, the grouting flower pipe and the grouting plug are integrally rotated by 90 degrees through the core pipe connecting pipe, meanwhile, the core pipe connecting pipe is pulled upwards, the rubber gasket is separated from one guide groove below while the core pipe connecting pipe rotates, at the moment, the rubber gasket is in contact with the inner wall of the grouting connecting pipe, and the maximum diameter of the rubber gasket is larger than the maximum diameter of the inner wall of the grouting connecting pipe, so that the rubber gasket can slightly deform in rotation, the bottommost grouting plug slightly deforms, the air pressure in the grouting connecting pipe is reduced, the sealing performance is low, the circulating air is generated, at the moment, the adsorption pressure between the grouting plug and the inner wall of the grouting connecting pipe is small, so that the grouting plug is more convenient to pull along the inner wall of the grouting connecting pipe, the pulling force is reduced, the core pipe connecting pipe is reversely rotated by 90 degrees after the pulling, the rubber gasket is reset, and when the core pipe connecting pipe continuously pulls the rubber gasket to a guide groove above to correspond to the position, the rubber gasket is correspondingly blocked and installed, the pulling force is sensed, and pouring is stopped, and the position of the upper section of grouting operation can be rapidly realized;
3. the construction method of the grouting structure provided by the invention is simple and convenient, the sleeve valve pipe is rapid and compact, the grouting core pipe is connected with high service efficiency, and the grouting efficiency of the deep filling layer is greatly improved;
4. in conclusion, the grouting pipe has novel and compact structure, is compact and high in connection degree between grouting core pipes, is suitable for high-pressure grouting operation, can not leak and leak slurry, has neat inner wall of the sleeve valve pipe, is convenient to construct continuously, is convenient to position the grouting position of the grouting pipe, reduces operation time, and is suitable for being more efficient and convenient.
Drawings
FIG. 1 is a schematic structural view of a sleeve valve pipe grouting structure for deep fill layers;
FIG. 2 is a schematic elevational view of the structure of FIG. 1;
FIG. 3 is a schematic view of a partial structure of the grouting pipe and the rubber gasket of FIG. 2;
FIG. 4 is a schematic view of the guide slot of FIG. 2;
FIG. 5 is a schematic view of a portion of the core tube connection tube of FIG. 2;
FIG. 6 is a schematic view of the cinching mechanism of FIG. 2;
FIG. 7 is a schematic flow diagram of a construction method for a deep fill sleeve grouting structure.
Reference numerals: 1. grouting connecting pipes; 2. grouting a connecting sleeve; 3. a blocking head; 4. a one-way valve; 5. a core tube connecting pipe; 6. a tightening mechanism; 61. an arc-shaped plate I; 62. arc-shaped plate II; 63. a limit groove; 64. a connecting plate; 65. a bolt; 66. a sealing gasket; 67. a sealing block; 68. a fixed block; 69. a positioning bolt; 7. a grout stop plug; 8. grouting a flower pipe; 9. a rubber gasket; 10. a guide groove; 11. connecting a threaded pipe; 12. and a positioning ring.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 1-6, the sleeve valve pipe grouting structure for the deep filling layer provided by the invention comprises a grouting pipe and a grouting core pipe, wherein the grouting pipe comprises a plurality of sections of grouting connecting pipes 1, the outer ring of the joint of the two grouting connecting pipes 1 is provided with a grouting connecting sleeve 2, and one end of the bottom of the grouting connecting pipe 1 is connected with a plugging head 3;
a grouting core pipe is arranged in the grouting pipe, the grouting core pipe comprises a plurality of sections of core pipe connecting pipes 5, a tightening mechanism 6 is arranged at the joint between the two core pipe connecting pipes 5, a grouting flower pipe 8 is arranged at the bottom of the grouting core pipe at the bottommost end, grouting plugs 7 are arranged at the two ends of the grouting flower pipe 8, guide grooves 10 are symmetrically formed in the inner wall of the grouting connecting pipe 1, and a rubber gasket 9 is connected at the bottom of the grouting plug 7 connected with the bottom of the grouting flower pipe 8;
the one end of core tube connecting pipe 5 is provided with connection screwed pipe 11, the inner wall of the one end of core tube connecting pipe 5 adjacent to holding ring 12 is equipped with the helicla flute, the helicla flute and connection screwed pipe 11 adaptation installation, the setting of connecting screwed pipe 11 and helicla flute is used for rotating the installation with two adjacent core tube connecting pipes 5, the fixed cover of the other end outer lane of core tube connecting pipe 5 is equipped with holding ring 12, the biggest external diameter of arc 61 and arc 62 is less than the biggest external diameter of holding ring 12, tightening mechanism 6 includes arc 61 and arc 62, the inner circle of arc 61 and arc 62 is connected with sealing pad 66, one side inner wall of sealing pad 66 is connected with sealing block 67, sealing block 67 and the inner wall adhesive connection of arc 61 and arc 62, one side of arc 61 and arc 62 rotates to be connected, install connecting plate 64 on the arc 62, set up spacing groove 63 on the arc 61, bolt 65 rotates to be installed on connecting plate 64, bolt 65 and spacing groove adaptation is connected, spacing groove 63 has a plurality ofly, and along the motion track when connecting plate 64 rotates, arc 61 and arc 62 is provided with square shaped positioning groove 69, the cross section that is connected with one side of arc 68, the top of fixing bolt 68 is fixed to one side of locating ring 68, the fixed positioning groove is connected with one side of arc 68.
In this embodiment, one end of the grouting connecting pipe 1 is rotationally assembled with the inner wall of one end of the grouting connecting sleeve 2, one end of the other grouting connecting pipe 1 is rotationally assembled with the inner wall of the other end of the grouting connecting sleeve 2, the sealing plug 3 is rotationally assembled with the bottommost part of the grouting connecting pipe 1 to complete the assembly of the grouting pipe, the grouting core pipe is assembled after the assembly of the grouting pipe is completed, one end of the bottommost core pipe connecting pipe 5 is rotationally connected with the inner wall of one end of the top of the grouting flower pipe 8, the other end of the core pipe connecting pipe 5 is simultaneously assembled with the other core pipe connecting pipe 5, the connecting threaded pipe 11 is used for assembling the two core pipe connecting pipes 5, the arc-shaped plate one 61 and the arc-shaped plate two 62 in the tightening mechanism 6 are separated by an unfolding angle after the assembly of the two core pipe connecting pipes 5, the positioning bolts 69 at the bottom of the fixing block 68 are correspondingly buckled with the positioning grooves on the positioning ring 12, simultaneously, the arc-shaped plate I61 and the arc-shaped plate II 62 are rotated to one close end, so that the inner wall of the arc-shaped plate I61 and the arc-shaped plate II 62 are tightly attached to the outer wall of the core pipe connecting pipe 5, the sealing performance of the connection between the arc-shaped plate I61 and the arc-shaped plate II 62 and the outer wall of the core pipe connecting pipe 5 is improved through the sealing block 67 arranged on the inner wall of the sealing pad 66, when the arc-shaped plate I61 and the arc-shaped plate II 62 rotate to the limit position, the bolt 65 is rotated to be connected with the limit groove 63, the assembly and installation of the tightening mechanism 6 and the outer ring of the core pipe connecting pipe 5 can be completed, the core pipe connecting pipes 5 are sequentially connected until the length requirement is met, in the grouting operation, the rubber gasket 9 and the guide groove 10 are correspondingly installed, the grouting plugs 7 sleeved at the two ends of the grouting flower pipe 8 tightly attach the inner wall of the grouting connecting pipe 1, when the core pipe connecting pipe 5 is used for conveying mortar, the check valve 4 is opened by the pressure of grouting, the deep soil layer is subjected to grouting operation, and the grouting stop plug 7 prevents the slurry from penetrating into the grouting connecting pipe 1.
Example two
As shown in fig. 1-6, in the sleeve valve pipe grouting structure for a deep filling layer, compared with the first embodiment, the embodiment further comprises a grouting pipe and a grouting core pipe, the grouting pipe comprises a plurality of sections of grouting connecting pipes 1, a grouting discharge port is formed in the grouting connecting pipe 1, a one-way valve 4 is arranged in the grouting discharge port, a grouting connecting sleeve 2 is arranged on the outer ring of the joint of the two grouting connecting pipes 1, one end of the bottom of the grouting connecting pipe 1 is connected with a plugging head 3, thread grooves are formed on the outer rings of the two ends of the grouting connecting pipe 1, connecting threads are formed on the inner ring of the grouting connecting sleeve 2, the grouting connecting sleeve 2 is in rotary connection with the grouting connecting pipe 1, the plugging head 3 is in rotary connection with the grouting connecting pipe 1 through the threads, the grouting connecting sleeve 2 is arranged for assembling and connecting the plurality of sections of grouting connecting pipes 1, and the sharp corners of the plugging head 3 are arranged to facilitate the corresponding installation of the grouting pipe and a drilling hole;
the grouting pipe is internally provided with a grouting core pipe, the grouting core pipe comprises a plurality of sections of core pipe connecting pipes 5, a tightening mechanism 6 is arranged at the joint between the two core pipe connecting pipes 5, a grouting flower pipe 8 is arranged at the bottom of the bottommost grouting core pipe, grouting core pipe slurry discharging ports are formed in the grouting flower pipe 8, two ends of the grouting flower pipe 8 are provided with grouting plugs 7, the grouting plugs 7 are sleeved on the outer ring of the grouting flower pipe 8, guide grooves 10 are symmetrically formed in the inner wall of the grouting connecting pipe 1, the guide grooves 10 are arc grooves, rubber gaskets 9 are connected to the bottom of the grouting plug 7 connected with the bottom of the grouting flower pipe 8, the sections of the two ends of the rubber gaskets 9 are arc surfaces, the rubber gaskets 9 are low-elasticity rubber gaskets, the cross section of the guide grooves 10 is crescent moon-shaped, and two sides of the rubber gaskets 9 are connected with the arc surfaces and the guide grooves 10 in an adapting mode;
one end of the core pipe connecting pipe 5 is provided with a connecting threaded pipe 11, the connecting threaded pipe 11 is in rotary threaded connection with the inner wall of the top of the grouting pipe 8, the outer ring of the other end of the core pipe connecting pipe 5 is fixedly sleeved with a positioning ring 12, the tightening mechanism 6 comprises a first arc-shaped plate 61 and a second arc-shaped plate 62, one sides of the first arc-shaped plate 61 and the second arc-shaped plate 62 are rotationally connected, a connecting plate 64 is arranged on the second arc-shaped plate 62, and a limiting groove 63 is formed in the first arc-shaped plate 61.
In this embodiment, the rubber gasket 9 at the bottom, the grouting flower pipe 8 and the grouting plug 7 are integrally rotated by 90 ° through the core pipe connecting pipe 5, meanwhile, the core pipe connecting pipe 5 is pulled upwards, the rubber gasket 9 is separated from the guide groove 10 below while the core pipe connecting pipe 5 rotates, at this time, the rubber gasket 9 is in conflict with the inner wall of the grouting connecting pipe 1, as the maximum diameter of the rubber gasket 9 is larger than the maximum diameter of the inner wall of the grouting connecting pipe 1, micro deformation can occur in the rotation of the rubber gasket 9, the bottommost grouting plug 7 is slightly deformed, the air pressure in the grouting connecting pipe 1 is changed, the tightness is low, at this time, the adsorption pressure of the grouting plug 7 and the inner wall of the grouting connecting pipe 1 is small, therefore, the grouting plug 7 is more conveniently pulled along the inner wall of the grouting connecting pipe 1, the adsorption is avoided to be excessively tight, the core pipe connecting pipe 5 is reversely rotated by 90 ° after being pulled, when the core pipe connecting pipe 5 is continuously pulled to a position corresponding to one guide groove 10 above, the limiting pressure of the inner wall of the rubber gasket 9 and the grouting connecting pipe 1 is released, the limiting pressure of the inner wall of the grouting connecting pipe 9 is caused, the sealing plug 1 is blocked, at the position of the sealing plug is stopped after the pipe connecting pipe is blocked by the guide groove 10, and the positioning section is stopped after the pulling is blocked by the pulling.
Example III
As shown in fig. 1-7, the construction method for the sleeve valve pipe grouting structure for the deep filling layer according to the present invention further includes the following steps compared with the first embodiment or the second embodiment:
s1, measuring and positioning a drilling machine: positioning the drilling position according to the soil layer data measuring and calculating result, and positioning the drilling through a drilling machine;
s2, assembling a sleeve valve tube: the grouting pipe and the grouting core pipe are assembled according to the pouring depth of the soil layer, the length of the grouting pipe is larger than the drilling depth, each section of core pipe connecting pipe 5 in the grouting core pipe is connected in a sealing way through a tightening mechanism 6, grease is smeared on the gap position of the grouting connecting sleeve 2 close to the grouting connecting pipe 1 and the inner wall of the grouting connecting sleeve 2 to avoid solidification and disassembly of mortar, abrasion of screw threads is reduced, and the grouting core pipe is rotated in S4 to rotate and separate a rubber gasket 9 from a guide groove 10, so that the rotation pressure is reduced;
s3, installing a sleeve valve pipe: after the sleeve valve pipe is pushed downwards and installed corresponding to the drilling position in the S1, the grouting core pipe is inserted into the grouting pipe, the sleeve valve pipe is the grouting pipe, the grouting pipe is 20 cm higher than the drilling hole, and one end of the blocking head 3 is in abutting installation with the inner wall of the bottom of the grouting pipe;
s4, preparing mortar: the mortar proportion is customized according to soil layer demands, mortar is mixed through stirring equipment, a grouting core pipe is rotated after grouting operation is completed through grouting operation, and the pipe is taken up in sections, wherein the sectional pipe taking up comprises the following steps: disassembling the tightening mechanism 6, opening and disassembling the tightening mechanism 6 from the outer ring of the core pipe connecting pipe 5, and separating the positioning bolts 69 from the positioning grooves on the positioning ring 12; rotating one core pipe connecting pipe 5 at the top part so that the connecting threaded pipe 11 is separated from the inner wall of the core pipe connecting pipe 5 at the bottom part in a rotating way;
s5, monitoring and detecting: and detecting soil layer pressure and other data after sectional grouting, and performing next grouting operation after the soil layer pressure and other data are qualified.
The above-described embodiments are merely a few preferred embodiments of the present invention, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present invention and the related teachings of the above-described embodiments.
Claims (8)
1. The utility model provides a sleeve valve pipe slip casting structure for deep filling layer, includes slip casting pipe and slip casting core pipe, its characterized in that: the grouting pipe comprises a plurality of sections of grouting connecting pipes (1), grouting connecting sleeves (2) are arranged on the outer ring of the joint of the two grouting connecting pipes (1), and one end of the bottom of each grouting connecting pipe (1) is connected with a plugging head (3);
a grouting core pipe is arranged in the grouting pipe, the grouting core pipe comprises a plurality of sections of core pipe connecting pipes (5), a tightening mechanism (6) is arranged at the joint between the two core pipe connecting pipes (5), a grouting flower pipe (8) is arranged at the bottom of the bottommost grouting core pipe, grouting plugs (7) are arranged at the two ends of the grouting flower pipe (8), guide grooves (10) are symmetrically formed in the inner wall of the grouting connecting pipe (1), and rubber gaskets (9) are connected at the bottom of the grouting plugs (7) connected with the bottom of the grouting flower pipe (8);
one end of the core pipe connecting pipe (5) is provided with a connecting threaded pipe (11), a positioning ring (12) is fixedly sleeved on the outer ring of the other end of the core pipe connecting pipe (5), the tightening mechanism (6) comprises a first arc-shaped plate (61) and a second arc-shaped plate (62), one sides of the first arc-shaped plate (61) and the second arc-shaped plate (62) are rotationally connected, a connecting plate (64) is arranged on the second arc-shaped plate (62), and a limiting groove (63) is formed in the first arc-shaped plate (61);
one side of the first arc-shaped plate (61) and the second arc-shaped plate (62) which are rotationally connected is provided with a fixed block (68) connected to the outer wall of the first arc-shaped plate (61), the bottom of the fixed block (68) is connected with a positioning bolt (69), the top of the positioning ring (12) is provided with a positioning groove, and the positioning bolt (69) is correspondingly installed with the positioning groove;
the inner rings of the first arc plate (61) and the second arc plate (62) are connected with a sealing gasket (66), one side inner wall of the sealing gasket (66) is connected with a sealing block (67), a bolt (65) is rotationally connected to the connecting plate (64), the bolt (65) is connected with the limit groove (63) in an adaptive manner, and the maximum outer diameters of the first arc plate (61) and the second arc plate (62) are smaller than the maximum outer diameter of the positioning ring (12);
the guide groove (10) is an arc groove, the sections of the two ends of the rubber gasket (9) are arc surfaces, and the rubber gasket (9) is a low-elasticity rubber pad.
2. A sleeve valve pipe grouting structure for deep filling layers as claimed in claim 1, characterized in that the inner wall of the core pipe connecting pipe (5) adjacent to one end of the positioning ring (12) is provided with a thread groove, and the thread groove is matched and installed with the connecting thread pipe (11).
3. The sleeve valve pipe grouting structure for the deep filling layer according to claim 1, wherein the grouting stop plug (7) is sleeved on the outer ring of the grouting floral pipe (8), and the connecting threaded pipe (11) is in rotary threaded connection with the top inner wall of the grouting floral pipe (8).
4. A sleeve valve pipe grouting structure for deep filling layers according to claim 3, wherein a grouting core pipe grouting port is formed in the grouting flower pipe (8), a grouting port is formed in the grouting connecting pipe (1), and a one-way valve (4) is arranged in the grouting port.
5. The sleeve valve pipe grouting structure for deep filling layers according to claim 1, wherein thread grooves are formed in outer rings of two ends of the grouting connecting pipe (1), connecting threads are formed in inner rings of the grouting connecting sleeve (2), the grouting connecting sleeve (2) is rotationally connected with the grouting connecting pipe (1), and the plugging head (3) is rotationally connected with the grouting connecting pipe (1) through threads.
6. A construction method for a deep fill sleeve valve pipe grouting structure as claimed in any one of claims 1 to 5, comprising the steps of:
s1, measuring and positioning a drilling machine: positioning the drilling position according to the soil layer data measuring and calculating result, and positioning the drilling through a drilling machine;
s2, assembling a sleeve valve tube: the grouting pipe and the grouting core pipe are assembled according to the pouring depth of the soil layer, the length of the grouting pipe is larger than the drilling depth, and each section of core pipe connecting pipe (5) in the grouting core pipe is connected in a sealing manner through a tightening mechanism (6);
s3, installing a sleeve valve pipe: after the sleeve valve pipe is pushed downwards corresponding to the drilling position in the S1, the grouting core pipe is inserted into the grouting pipe, and one end of the blocking head (3) is in abutting installation with the inner wall of the bottom of the grouting pipe;
s4, preparing mortar: the proportion of mortar is customized according to the soil layer requirement, the mortar is mixed by stirring equipment, and the grouting core pipe is rotated after the grouting operation is completed by a grouting machine, and the pipe is collected in a segmented mode;
s5, monitoring and detecting: and detecting soil layer pressure data after sectional grouting, and performing next grouting operation after the soil layer pressure data are qualified.
7. The construction method for the deep filling layer sleeve valve pipe grouting structure according to claim 6, wherein in the S2 assembled sleeve valve pipe, grease is smeared on the gap of the grouting connecting sleeve (2) close to the grouting connecting pipes (1) and the inner wall of the grouting connecting sleeve (2) to avoid solidification, disassembly and change of mortar, abrasion of screw threads is reduced, and the rotating grouting core pipe in the S4 is used for rotating and separating the rubber gasket (9) from the guide groove (10) to reduce rotation pressure.
8. The construction method for a deep fill sleeve grouting structure as claimed in claim 6, wherein the step of receiving the sleeve in the step S4 comprises the steps of: the tightening mechanism (6) is disassembled, the tightening mechanism (6) is opened and disassembled from the outer ring of the core pipe connecting pipe (5), and the positioning bolts (69) are separated from the positioning grooves on the positioning ring (12); and rotating one core pipe connecting pipe (5) at the top part so that the connecting threaded pipe (11) is separated from the inner wall of the core pipe connecting pipe (5) at the bottom part in a rotating way.
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| CN202210433281.4A CN114718046B (en) | 2022-04-24 | 2022-04-24 | Sleeve valve pipe grouting structure for deep filling layer and construction method of sleeve valve pipe grouting structure |
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| CN114718046A (en) | 2022-07-08 |
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