CN110670586B

CN110670586B - Construction method for light reconstruction of airport runway surface

Info

Publication number: CN110670586B
Application number: CN201910933081.3A
Authority: CN
Inventors: 连林
Original assignee: Shanghai Longji Construction Co ltd
Current assignee: Shanghai Longji Construction Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-06-04
Anticipated expiration: 2039-09-29
Also published as: CN110670586A

Abstract

The invention relates to a construction method for light reconstruction of an airport runway surface, which comprises the following process steps: s1: measuring and positioning to determine the installation position of the lamp; s2: carrying out reinforcement construction on the soft soil layer foundation at the lamp installation position; s3: excavating a working well for the soft soil layer foundation reinforced in the step S2, supporting in the working well, and covering a top plate on the working well; s4: drilling a line passageway through the drilling machine within the work well in step S3; s5: putting a wire grip into the penetrating pipe, dragging and laying the penetrating pipe with the wire grip in advance into the wire pipe channel drilled in the step S4, and injecting support slurry into the penetrating pipe and the wire pipe channel; s6: drawing the light cable in the through pipe by using the wire drawing device preset in the step S5; s7: and backfilling and reinforcing the working well in the step S3 and installing the lamp. The invention has the effect of reducing the influence on the bearing capacity of the soft soil layer foundation when the light modification construction of the airport runway pavement is carried out.

Description

Construction method for light reconstruction of airport runway surface

Technical Field

The invention relates to the technical field of light reconstruction construction, in particular to a construction method for light reconstruction of an airport field road surface.

Background

Many airports are built earlier and are therefore limited in size by the prevailing traffic and economic development levels, and are generally smaller. Along with the development of economy, the passenger flow of the airport is greatly increased, and the airport of the original scale cannot meet new requirements; if the airport is re-located and re-built, the time is very long and the investment is high, so that the general airport can select the extension scheme. In the extension process of an airport, a great difficult problem, namely the light reconstruction problem of the pavement of the post-extension runway, is often encountered.

For example, chinese patent application publication No. CN107687595A discloses a construction method for airfield runway surface light modification, which includes the steps of: determining an airport runway structure, and determining the vertical drilling depth according to the runway structure; measuring and setting out according to the requirements of a design drawing, and determining the drilling position of the directional drill; drilling a vertical drilling hole at the position where the lamp is installed on the road surface by using a vertical drilling machine; performing directional drilling construction under the road surface, and drilling a line pipe channel to a vertical drilling position in the soil surface area according to a positioning curve; dragging the line pipe along the line pipe channel to complete the line pipe passing work; and (4) penetrating and pulling the light cable in the wire pipe, and mounting the lamp after hole backfilling.

The above prior art solutions have the following drawbacks: in the actual construction process of light modification of the airport runway pavement in the coastal zone, the soft soil layer foundation is often met, the soft soil layer is easy to liquefy due to increase of water pressure in the gap and reduction of effective stress, the soft soil layer foundation can be further damaged when drilling and line pipe installation are carried out, so that the bearing capacity of the soft soil layer foundation is reduced, and even serious persons can cause settlement and cracking of the airport runway pavement, so that a construction method capable of reducing influence on the bearing capacity of the soft soil layer foundation when light modification construction of the airport runway pavement is carried out is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a construction method for airfield runway surface light modification, which has the effect of reducing the influence on the bearing capacity of a soft soil layer foundation when the airfield runway surface light modification is carried out.

The above object of the present invention is achieved by the following technical solutions:

a construction method for light reconstruction of an airport runway surface comprises the following process steps:

s1: measuring and positioning to determine the installation position of the lamp;

s2: the method specifically comprises the following steps of:

a. drilling in a forward rotation mode through the drilling machine on the peripheral side of the lamp installation position determined in the step S1 until a drill bit of the drilling machine drills to a designed elevation;

b. the drilling machine reversely lifts the drill and sprays cement slurry into the drill hole through a grouting pump;

c. repeatedly carrying out reverse drill lifting grouting and forward drill rotation drilling of the drilling machine in the same drill hole for multiple times;

d. the drilling machine reversely lifts the drill bit, the drill bit of the drilling machine is lifted out of the drill hole, and cement slurry and soil are mixed and consolidated to form a pile;

e. repeating the steps to drill and arrange a plurality of pile bodies on the circumferential side of the lamp installation position;

s3: excavating a working well in the soft soil layer foundation reinforced in the step S2, supporting in the working well, and covering a top plate on the working well;

s4: drilling a line passageway through the drilling machine within the work well in step S3;

s5: putting a wire grip into the penetrating pipe, dragging and laying the penetrating pipe with the wire grip in advance into the wire pipe channel drilled in the step S4, and injecting support slurry between the penetrating pipe and the wire pipe channel;

s6: drawing the light cable in the through pipe by using the wire drawing device preset in the step S5;

s7: and backfilling and reinforcing the working well in the step S3 and installing the lamp.

By adopting the technical scheme, wherein,

after the installation position of the lamp is located by measuring the pay-off, the soil layer around the installation position of the lamp is drilled, the soft soil layer is crushed, and then cement slurry is injected, so that the cement slurry is mixed with the fine soft soil layer. The cement slurry is sprayed to the fine and weak soil layer through repeated forward and backward rotation drilling and reverse rotation drill lifting to enable the fine and weak soil layer to be fully mixed with the cement slurry, after a drill bit of the drilling machine is lifted out of the drilled hole, the mixture of the cement slurry and the fine and weak soil layer can be solidified to form a pile, and the pile and the soft soil layer bear load together through arrangement of the pile body on the periphery of the installation position of the lamp, so that the bearing capacity of the soft soil layer is improved.

And a working well is excavated, and a top plate is covered after supporting, so that the construction can be carried out in the daytime without influencing the take-off and landing of flights. And one working well is excavated in a channel enclosed by the pile body, and the working well has small overall damage to a soft soil layer; and secondly, the supporting of the working well can further improve the bearing capacity of a soft soil layer around the working well so as to further reduce the damage of the excavation working well to the soft soil layer.

The line pipe channel is drilled through the drilling machine and injected with supporting slurry, the line pipe channel can be filled, the supporting slurry forms support for the soft soil layer after solidification, and the supporting slurry and the soft soil layer bear loads together, so that the influence of the drilled line pipe channel on the bearing capacity of the soft soil layer is reduced.

Through predetermineeing the wire grip in the poling, then after the poling is dragged and is laid the spool passageway, only need use the wire grip stimulate the cable can, the workman of being convenient for operates, and the cable receives the poling and struts the protection of thick liquids.

The backfilling reinforcement of the working well is equivalent to replacing a part of soft soil layer with a backfilling reinforcement material, after the working well is backfilled and reinforced, the soft soil layer near the installation position of the lamp can be reinforced through the cooperation of the backfilling reinforcement material in the working well, the supporting structure of the working well and the pile body on the periphery of the working well, and therefore the bearing capacity of the soft soil layer is improved.

The invention is further configured to: the working well support in the step S3 specifically comprises the following steps:

a. performing concrete pouring at the bottom of the working well so as to form a bottom sealing layer;

b. installing an anchor net on the inner peripheral side wall of the working well through soil nails, and spraying concrete on the anchor net to form a first supporting layer;

c. spraying waterproof paint on the bottom sealing layer formed in the step a and the first protection layer formed in the step b to form a waterproof layer;

d. and binding reinforcing steel bars on the bottom sealing layer in the working well in the circumferential direction, installing a pouring mold, and then pouring concrete to form a second supporting layer.

By adopting the technical scheme, wherein,

by pouring the concrete bottom sealing layer at the bottom of the working well, not only can better supporting force be provided, but also the possibility of underground water permeating into the working well can be reduced.

Through the soil nail with the anchor net nail on the interior wall of working well, the lifting surface area of anchor net is big and with the inside wall primary connection of working well one-piece, and it can carry out basic strutting to the inside wall of working well.

The anchor net can be regarded as the reinforcing bars of the sprayed concrete by spraying the concrete on the anchor net so as to enhance the strength of the sprayed concrete, and the anchor net, the soil nails and the sprayed concrete can form a first support for the inner side wall of the working well so as to improve the bearing capacity of a soft soil layer near the working well. And the concrete has certain waterproof ability, and it can reduce the possibility that groundwater infiltrates in the work well with the bottom sealing layer cooperation.

By spraying the waterproof coating, the waterproofness of the whole working well is further improved, and the possibility of groundwater infiltration into the working well is further reduced.

And (3) forming a second supporting layer by binding reinforcing steel bars and pouring concrete through a pouring mould so as to further support and prevent water for the working well. And the first supporting layer, the second supporting layer and the bottom sealing layer are matched, so that the working well is supported, and a soft soil layer near the working well can be supported, so that the bearing capacity of the soft soil layer near the working well is improved.

The invention is further configured to: the support slurry comprises the following raw materials in percentage by weight:

by adopting the technical scheme, wherein,

the water-cement ratio of the support slurry is controlled by adjusting the proportion of water and portland cement, so that the support slurry is prepared according to actual geological conditions.

The triethanolamine is used as a water reducing agent and an early strength agent, and can enable the support slurry to be solidified more quickly, so that the whole construction period is shortened, and the influence on normal flights of an airport is reduced. And more hydration products generated by triethanolamine in the early stage can reduce capillaries and gaps, so that the anti-seepage capability of the support slurry is strong, and the penetrating pipe can be isolated from the soft soil layer to protect the penetrating pipe from being corroded by the soft soil layer. And the seepage-proofing capability of the supporting slurry is enhanced, and the corrosion of sulfate and chloride in a soft soil layer to the supporting slurry can be reduced.

Calcium lignosulfonate is used as a water reducing agent, and can generate more hydrated crystal fibers in the support slurry so as to reduce gaps and capillaries generated by evaporation of free water. The calcium lignosulfonate and the triethanolamine cooperate to enhance the strength of the supporting slurry so as to improve the supporting effect of the supporting slurry on surrounding soft soil layers; the anti-seepage capability of the support slurry can be improved, so that the corrosion of the soft soil layer to the pipe penetration and the support slurry is reduced.

The gypsum can react with tricalcium aluminate in cement minerals to reduce the possibility that the supporting slurry is rapidly condensed due to the over-high hydration speed of the tricalcium aluminate, so that a cavity exists in a conduit passage. The gypsum is added to uniformly and compactly fill the line channel with the support slurry, so that the line channel is not broken, and the continuous and solidified support slurry can better support a soft soil layer.

And the sodium carbonate, the water glass, the quick lime and the triethanolamine are alkaline and can react with acidic substances in a soft soil layer, so that the concentration of calcium ions and hydroxide ions in the support slurry is increased, and the increase of the concentration of the calcium ions and the hydroxide ions can promote the generation of CSH gel, thereby being beneficial to the hydration of cement. And the hydration speed of the cement is increased under the alkaline condition, the consumption of clinker minerals in the cement is increased so as to reduce the water absorption of the support slurry, and the reduction of the free water in the gaps can improve the compactness of the solidified support slurry so as to improve the strength and the water seepage prevention capability of the support slurry.

The invention is further configured to: the wire puller comprises an elastic steel wire rope, a dragging device is installed at one end of the elastic steel wire rope, the dragging device comprises a dragging head fixedly installed on the elastic steel wire rope, a clamping piece is installed on the dragging head, and a universal wheel is further installed on the dragging head, far away from one end of the elastic steel wire rope, of the clamping piece.

Through adopting above-mentioned technical scheme, when using the wire grip to carry out wearing of cable and drawing, through with the cable centre gripping on the holder, stimulate the elastic steel wire afterwards, the elasticity of elastic steel wire is sufficient, is meetting difficult card of elbow department and dies. The additional universal wheels are used for reducing the force required by the dragging device when the dragging device pulls the cable, and further reducing the possibility that the dragging device is blocked at the elbow.

The invention is further configured to: the dragging head is provided with a mounting groove for mounting the clamping piece, and one end of the mounting groove is also provided with a through hole for a cable to pass through; the clamping piece comprises a driving disc which is rotatably arranged in the mounting groove, a plane thread is arranged on the end side wall of one side of the driving disc, and a handle is arranged on the end side wall of the other side of the driving disc; still seted up the groove of sliding along length direction in the mounting groove, slidable mounting has the sliding block in the groove of sliding, outside the groove of sliding be provided with on the sliding block with plane thread engagement's ring gear, the sliding block is close to the grip block is still installed to the one end of through-hole.

By adopting the technical scheme, when the cable is dragged, the cable rubs against the inner wall of the through pipe, the resistance is large, once the clamping force of the dragging device on the cable is not enough to overcome the friction force between the cable and the through pipe, the dragging device possibly breaks away from the clamping state with the cable, at the moment, one part of the cable is positioned in the through pipe, and the dragging of the cable is troublesome. Then put the cable into the through-hole, rethread handle rotation driving-disc, the meshing of driving-disc with plane screw thread and ring gear drives the sliding block and slides in the sliding groove to promote the grip block to remove towards the through-hole, with the cable centre gripping in the through-hole. And because the characteristic of structure, the plane screw thread can drive the sliding block to slide through the ring gear, and the ring gear then can not drive the driving-disc to rotate through applying the effort, this holder has the auto-lock ability promptly to guarantee that the centre gripping to the cable can not become flexible, with the cable and the possibility that the wire grip breaks away from the centre gripping when reducing the dilatory cable.

The invention is further configured to: the handle is rotationally connected with the driving disc, and an accommodating groove for accommodating the handle is formed in the driving disc; the handle is characterized in that a clamping piece is installed in the accommodating groove and comprises two elastic clamping rods, clamping blocks are installed on the side walls, close to one side, of the two clamping rods, and the two clamping blocks form a clamping opening of the handle.

Through adopting above-mentioned technical scheme, bellied handle leads to wire grip and cable card dead very easily in elbow department, then only needs after the rotation of accomplishing driving-disc, rotates the handle and makes the handle sink in the holding tank. When the handle sinks into the accommodating groove, the two clamping blocks can be pushed, the two clamping rods are driven by the two clamping blocks to generate elastic deformation, the handle continues to rotate, and then the handle is clamped into a channel formed by the two clamping rods, so that the possibility that the handle is separated from the accommodating groove is reduced. And accomodate bellied handle back, can reduce the possibility that wire grip and cable take place the dead phenomenon of card in elbow department.

The invention is further configured to: the step S7 specifically includes the following steps:

a. sleeving a protection pipe on a cable in the working well, and connecting the protection pipe with a through pipe in a sealing manner;

b. gravel backfilling and pavement of road slabs;

c. grouting holes are formed in the pavement slab;

d. grouting through the grouting holes by using a grouting machine;

e. and fixedly mounting the lamp on the panel.

By adopting the technical scheme, wherein,

the protective pipe connected with the pipe penetrating seal can protect cables in the working well, and when backfilling is carried out at any time, pressure of broken stones is mainly borne by the protective pipe, so that compression and abrasion of the broken stones on the cables in the working well are reduced.

The bearing capacity of rubble is greater than weak soil layer far away, and through seting up the slip casting hole on the pavement slab to carry out the slip casting with the slip casting machine, highly compressed thick liquids can fill the gap between the rubble, and connect rubble and pavement slab, in order to reduce the not hard up possibility of pavement slab. And the injected slurry can improve the connection tightness between the broken stone and the soft soil layer, thereby improving the supporting capability of the soft soil layer.

The invention is further configured to: the slip casting machine includes the slip casting machine body, be connected with the conveying pipe on the slip casting machine body, be connected with on the conveying pipe and end contrary part, end contrary part is including ending contrary pipe, end that ends contrary pipe with the conveying pipe is linked together, the other end that ends contrary pipe is connected with the shower nozzle, end contrary intraductal fixed mounting has the support, the support is kept away from the one end of shower nozzle installs first flexible pipe, the flexible pipe of second has been cup jointed in the first flexible pipe, the flexible pipe of second is kept away from the valve block is installed to the one end of support, first flexible pipe with cup joint on the flexible pipe of second and install expanding spring, expanding spring's both ends respectively with the valve block with the support links to each other, just end contrary pipe is close to still install annular check ring on the inside wall of conveying pipe one.

Through adopting above-mentioned technical scheme, when carrying out the slip casting operation, the thick liquids can be automatically filled the gap of rubble under highly compressed transport, and after the slip casting was accomplished, the thick liquids that exist in shower nozzle and pay-off pipe often can flow under the effect of self pressure and gravity to lead to a large amount of thick liquids of adhesion on the pavement, and the clearance of thick liquids is very troublesome, not only leads to the decline of pavement planarization easily, still leads to whole construction time's extension easily.

After the check component is added, when the grouting machine body conveys high-pressure slurry, the slurry pushes the valve plate to separate the valve plate and the check ring from a tight state, and the slurry can flow into the check pipe through a channel formed between the valve plate and the check pipe and flow to the spray head through the check pipe to perform grouting operation. And when the pressure of the slurry in the feeding pipe is insufficient and is not enough to push the valve plate, the slurry is isolated in the feeding pipe by the check component and cannot flow out through the spray head. At the moment, the grouting quality problem caused by low-pressure slurry can be reduced, and the spray head and the feeding pipe can be isolated after grouting is finished, so that the possibility that the slurry flows out and adheres to a road surface is reduced. The influence of the slurry on the smoothness of the pavement can be reduced, and the time for workers to perform ground cleaning work can be reduced, so that the time for overall construction is shortened, and the economic loss of an airport is reduced.

The invention is further configured to: the step S1 specifically includes performing plane control measurement and elevation control measurement to determine a lamp installation position; and the underground pipeline distribution condition is detected through an underground pipeline detector and is compared and confirmed with airport construction design data.

By adopting the technical scheme, the plane position and the elevation of the airport lamp are very important data, and the installation position of the airport lamp must be determined before the lamp is constructed and installed so as to improve the installation accuracy of the lamp. The underground pipeline detector is used for detecting the distribution condition of underground pipelines, and comparing and confirming the underground pipelines with airport construction design data, and the next construction can be carried out after confirming that the distribution condition of the underground pipelines is correct. So as to reduce the possibility of damaging the underground pipeline in the construction process caused by the error detection of the pipeline.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the soft soil layer at the lamp installation position is reinforced, so that the influence of the installation of the lamp on the bearing capacity of the soft soil layer is reduced;

2. the influence of the excavation working well on the bearing capacity of the soft soil layer can be reduced by excavating the working well and reinforcing the working well;

3. supporting the soft soil layer while protecting the penetrated pipe by configuring supporting slurry with quick solidification time, strong seepage-proofing capability and strong corrosion resistance so as to improve the bearing capacity of the soft soil layer;

4. the cable pulling device is additionally arranged, so that the pulling efficiency of the cable is improved, and the self-locking capacity of the cable pulling device can reduce the possibility that the cable is separated from the clamping of the cable pulling device during pulling;

5. through the slip casting machine with the non-return part, the possibility of the slip casting quality problem caused by insufficient slurry pressure can be reduced, and the cleaning time caused by slurry dropping and attaching to the road surface can be shortened.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of the conduit channel, the feed-through and the support slurry of the present invention;

FIG. 4 is a cross-sectional view of the threader of the present invention;

FIG. 5 is an enlarged partial view of portion B of FIG. 4;

FIG. 6 is an enlarged partial schematic view of portion C of FIG. 4;

FIG. 7 is a schematic view of the overall structure of the grouting machine according to the present invention;

fig. 8 is a sectional view of a backstop member according to the present invention.

In the figure, 1, a working well; 11. a pile body; 12. a bottom sealing layer; 13. anchoring the net; 14. a first protective layer; 15. a waterproof layer; 16. reinforcing steel bars; 17. a second supporting layer; 2. a conduit channel; 21. Pipe penetration; 22. supporting the slurry; 3. a protective tube; 31. a pavement slab; 32. grouting holes; 33. A light fixture; 4. an elastic wire rope; 5. a pulling device; 51. dragging the puller; 52. mounting grooves; 53. A through hole; 54. a universal wheel; 6. a clamping member; 61. a drive disc; 62. a handle; 63. accommodating grooves; 64. a planar thread; 65. a sliding groove; 66. a sliding block; 67. a ring gear; 68. a clamping block; 7. a clamping and fixing piece; 71. clamping and fixing the rod; 72. a clamping block; 8. a grouting machine body; 81. a feed pipe; 82. a spray head; 9. a non-return member; 91. a non-return pipe; 92. a support; 93. a first telescopic tube; 94. a second telescopic tube; 95. a valve plate; 96. a tension spring; 97. a non-return ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the invention discloses a construction method for light modification of an airport runway surface, which specifically comprises the following process steps:

s1: measuring and positioning to determine the installation position of the lamp 33, which specifically comprises the following process steps: the installation position of the lamp 33 is determined and marked by the plane control measurement and the elevation control measurement. The distribution of underground pipelines is detected by the underground pipeline detector, and compared with airport construction design data for confirmation, and the final installation position of the lamp 33 can be finally determined after the situation of the detected pipelines is confirmed to be the same as the construction design data without errors.

S2: the method specifically comprises the following steps of carrying out reinforcement construction on the soft soil layer foundation at the installation position of the lamp 33:

a. drilling in a forward rotation manner through the drill on the peripheral side of the installation position of the lamp 33 determined in step S1 until the drill bit of the drill reaches the design elevation;

b. the drilling machine reversely lifts the drill and sprays cement slurry into the drill hole through a grouting pump until the drill bit is lifted to be 40 cm away from the pavement;

c. drilling in the same drill hole in a forward rotation mode again to the designed elevation, lifting the drill hole in a reverse rotation mode, spraying cement slurry into the drill hole, and repeating for 5 times;

e. the above steps are repeated to drill a plurality of stakes circumferentially around the mounting location of the lamp 33 to form a support circumferentially around the mounting location of the lamp 33.

S3: and (5) excavating the working well 1 in the soft soil layer foundation reinforced in the step (S2), wherein the working well 1 is positioned in a channel surrounded by the pile body 11, supporting is carried out in the working well 1, and a top plate is covered on the working well 1, so that the top plate and the road surface are horizontal to reduce the influence on airport flights.

The support for the working well 1 specifically comprises the following steps:

a. performing concrete pouring at the bottom of the working well 1 so as to form a bottom sealing layer 12;

b. installing an anchor net 13 on the inner peripheral side wall of the working well 1 through soil nails, and spraying concrete on the anchor net 13 to form a first supporting layer 14;

c. spraying a polyurethane waterproof coating on the bottom sealing layer 12 formed in the step a and the first protecting layer 14 formed in the step b to form a waterproof layer 15;

d. reinforcement bars 16 are circumferentially tied to the bottom sealing layer 12 in the working well 1, and a casting mold is installed, followed by casting of concrete to form a second supporting layer 17.

As shown in fig. 1 and 3, S4: a line pipe passage 2 is drilled by a drilling machine in the working well 1 in step S3 to communicate different working wells 1.

S5: and (3) placing a wire grip in the pipe penetration 21, dragging and laying the pipe penetration 21 with the wire grip in advance into the pipe channel 2 drilled in the step S4, and injecting the supporting slurry 22 into the pipe penetration 21 and the pipe channel 2. Wherein the supporting slurry 22 comprises the following raw materials in percentage by weight:

s6: the light cable is drawn through the penetration tube 21 using the wire puller preset in step S5.

S7: backfilling and reinforcing the working well 1 in the step S3 and installing the lamp 33, wherein the backfilling and reinforcing method specifically comprises the following steps:

a. a protective pipe 3 is sleeved on a cable in the working well 1, and the protective pipe 3 is connected with a through pipe 21 in a sealing way;

b. backfilling graded broken stones in the working well 1, laying a pavement slab 31 on the graded broken stones, and keeping the pavement slab 31 horizontal to the original pavement;

c. a drilling machine is used for forming a grouting hole 32 in the pavement slab 31;

d. grouting is carried out through the grouting holes 32 by using a grouting machine so as to tightly connect the graded broken stones, the road surface plate 31 and the working well 1;

e. the lamp 33 is fixedly mounted on the panel using bolts.

As shown in fig. 4 and 5, the wire puller in step S5 includes an elastic wire rope 4, the elastic wire rope 4 is located in the pipe 21, and a pulling device 5 is installed at one end of the elastic wire rope 4. The dragging device 5 comprises a dragging head 51 fixedly installed on the elastic steel wire rope 4, an installation groove 52 is formed in the dragging head 51, and a through hole 53 for the cable to pass through is formed in one end, close to the steel wire rope, of the installation groove 52.

The clamping piece 6 is installed in the installation groove 52, the clamping piece 6 comprises a driving disc 61 which is rotatably installed in the installation groove 52, wherein a handle 62 for rotating the driving disc 61 is rotatably installed on the end side wall of one side, away from the installation groove 52, of the driving disc 61, and a containing groove 63 for containing the handle 62 is further formed in the driving disc 61. The clamping piece 7 is further installed in the accommodating groove 63, the clamping piece 7 comprises a group of two elastic clamping rods 71, clamping blocks 72 are fixedly installed on one sides, close to each other, of one ends, far away from the accommodating groove 63, of the clamping rods 71, and the two clamping blocks 72 form a clamping opening of the handle 62.

As shown in fig. 4 and 6, a planar thread 64 is disposed on the end side wall of the driving disc 61 near the mounting groove 52, a sliding groove 65 is further disposed along the length direction in the mounting groove 52 between the driving disc 61 and the through hole 53, a sliding block 66 is slidably mounted in the sliding groove 65, a gear ring 67 engaged with the planar thread 64 is disposed on the sliding block 66 outside the sliding groove 65, and a clamping block 68 is mounted at one end of the sliding block 66 near the through hole 53. The end of the puller head 51 away from the elastic wire rope 4 is also rotatably provided with a universal wheel 54.

As shown in fig. 7 and 8, the grouting machine in step S7 includes a grouting machine body 8, a feeding pipe 81 is connected to the grouting machine body 8, and a backstop member 9 is connected to an end of the feeding pipe 81 away from the grouting machine body 8. The non-return part 9 comprises a non-return pipe 91, the non-return pipe 91 is communicated with the feeding pipe 81, one end of the non-return pipe 91, which is far away from the feeding pipe 81, is connected with a spray head 82 used for spraying the slurry, and the spray head 82 is communicated with the non-return pipe 91.

A support 92 is fixedly installed in the check pipe 91, a first telescopic pipe 93 is installed on one side, away from the spray head 82, of the support 92, a second telescopic pipe 94 is slidably sleeved in the first telescopic pipe 93, a valve plate 95 is fixedly installed at one end, away from the support 92, of the second telescopic pipe 94, and the diameter of the valve plate 95 is smaller than the inner diameter of the check pipe 91. An extension spring 96 is sleeved on the first extension tube 93 and the second extension tube 94, two ends of the extension spring 96 are respectively connected with a valve plate 95 and the support 92, an annular check ring 97 is further installed on the inner side wall of one end, close to the feeding tube 81, of the check tube 91, and the valve plate 95 is matched with the check ring 97 under the driving of the extension spring 96.

The implementation principle of the embodiment is as follows:

wherein, when the cable is pulled, the cable rubs against the inner wall of the through pipe 21, the resistance is large, once the clamping force of the pulling device 5 to the cable is not enough to overcome the friction force of the cable and the through pipe 21, the pulling device 5 may be separated from the clamping state with the cable, and at this time, a part of the cable is positioned in the through pipe 21, and it becomes troublesome to pull the cable.

At this time, the cable is placed in the through hole 53, and the driving disc 61 is rotated by the handle 62, the driving disc 61 drives the sliding block 66 to slide in the sliding groove 65 by the engagement of the plane thread 64 and the gear ring 67, and pushes the clamping block 68 to move towards the through hole 53, so as to clamp the cable in the through hole 53. And because the characteristic of structure, plane screw thread 64 can drive sliding block 66 to slide through ring gear 67, and ring gear 67 then can not drive driving-disc 61 to rotate through applying the effort, and this holder 6 has the auto-lock ability promptly to guarantee that the centre gripping to the cable can not become flexible, breaks away from the possibility of centre gripping with the wire grip when reducing the dilatory cable.

After the drive disc 61 has been rotated, the handle 62 is rotated to allow the handle 62 to be lowered into the receiving slot 63 in order to reduce the possibility that the raised handle 62 will cause the cable and the wire puller to jam in the tube 21. When the handle 62 sinks into the accommodating groove 63, the two clamping blocks 72 are pushed, the two clamping rods 71 are driven by the two clamping blocks 72 to generate elastic deformation, the handle 62 continues to rotate, and the handle 62 is clamped into a channel formed by the two clamping rods 71, so that the possibility that the handle 62 is separated from the accommodating groove 63 is reduced. After the raised handle 62 is accommodated, the possibility of the dead clamping phenomenon of the wire grip and the cable at the elbow can be reduced.

Wherein, when carrying out the slip casting operation, the thick liquids can fill the gap of rubble automatically under highly compressed transport, and when the slip casting completion back, exist in the thick liquids of shower nozzle 82 and conveying pipe 81 often can flow under the effect of self pressure and gravity to lead to a large amount of thick liquids of adhesion on the road surface, and the clearance of thick liquids is very troublesome, not only leads to the decline of road surface planarization easily, still leads to whole engineering time's extension easily.

After the check member 9 is added, when the grouting machine body 8 conveys high-pressure slurry, the slurry pushes the valve plate 95 to separate the valve plate 95 and the check ring 97 from a tight state, and the slurry can flow into the check pipe 91 through a channel formed between the valve plate 95 and the check pipe 91 and flow to the spray head 82 through the check pipe 91 to perform grouting operation. And when the pressure of the slurry in the feed pipe 81 is insufficient to push the valve sheet 95, the slurry is isolated in the feed pipe 81 by the check member 9 and does not flow out through the nozzle 82. At this time, not only can the grouting quality problem caused by low-pressure slurry be reduced, but also the spray head 82 and the feeding pipe 81 can be isolated after grouting is finished, so that the possibility that the slurry flows out and adheres to the road surface is reduced. The influence of the slurry on the smoothness of the pavement can be reduced, and the time for workers to perform ground cleaning work can be reduced, so that the time for overall construction is shortened, and the economic loss of an airport is reduced.

Examples 2-6 differ from example 1 in that the components of the slip formulation are in the following table in weight percent.

Comparative example

Comparative example 1 differs from example 1 in that the reinforcement of the weak soil layer is not performed and the drilling of the conduit channel is performed directly.

Comparative example 2 differs from example 1 in that no support slurry is injected between the feed-through and conduit channels.

Comparative example 3 differs from example 1 in that the components of the support slurry are given in the following table in weight percent.

Detection method

1. Method for detecting bearing capacity of soft soil layer

The lamps were installed by the methods of example 1 and comparative example 1, respectively, and a load of 5 tons was placed around the lamps, and settlement of the equally spaced surrounding road surface was observed after one year. The sedimentation data are reported in the following table,

examples	Number of sedimentation
		Example 1	5cm
Comparative example 1	15cm

And (4) conclusion: by comparing the example 1 with the comparative example 1, it can be shown that the bearing capacity of the soft soil layer can be obviously improved by reinforcing the soft soil layer around the lamp, so as to reduce the settlement of the soft soil layer.

2. Method for detecting corrosion protection of grouting material on pipe penetration

Taking soil in a soft soil layer of a construction site, and mixing dilute sulfuric acid with the concentration of 10% into the soil to obtain sample soil.

For the pipe penetration in the embodiment 1, a layer of grouting material with the thickness of 2 cm is coated, and the grouting material adopts the proportion in the embodiment 1; and then coating sample soil with the thickness of 10 cm outside the grouting material to obtain a sample 1.

The pipe penetration in comparative example 2 was directly coated with 10 cm of sample soil to obtain sample 2.

In the pipe penetration in the comparative example 3, a layer of grouting material with the thickness of 2 cm is coated, and the grouting material adopts the proportion in the comparative example 3; and then coating sample soil with the thickness of 10 cm outside the grouting material to obtain a sample 3.

All of the

samples

1, 2 and 3 were placed in an environment with a temperature of 25. + -. 2 ℃ and a humidity of 85. + -. 2% for 30 days, and after 30 days, the

samples

1, 2 and 3 were taken out to observe the degree of corrosion of the tubes in the

samples

1, 2 and 3.

The taken-out through pipe is weighed after being cleaned and dried, the difference value between the weighed weight and the initial weight is the corroded weight, and the corroded weight is divided by the initial weight of the through pipe, so that the corrosion rate can be obtained.

Examples	Rate of corrosion
		Example 1	1％
Comparative example 2	12％
		Comparative example 3	4％

And (4) conclusion: by comparing example 1 with comparative example 2, it can be seen that the support slurry of example 1 can effectively protect the pipe penetration to reduce the corrosion of the pipe penetration. By comparing the example 1 with the comparative example 3, it can be shown that the corrosion resistance of the support slurry can be effectively improved by adding additives such as triethanolamine, calcium lignosulfonate, gypsum, sodium carbonate, FDN, water glass, quicklime and the like into the support slurry so as to reduce the corrosion of the pipe.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A construction method for light reconstruction of an airport runway surface is characterized by comprising the following steps: the method comprises the following process steps:

s1: measuring the positioning to determine the installation position of the luminaire (33);

s2: the method specifically comprises the following steps of carrying out reinforcement construction on the soft soil layer foundation at the installation position of the lamp (33):

a. drilling in a forward rotation manner through the drill on the peripheral side of the installation position of the lamp (33) determined in the step S1 until the drill bit of the drill drills to the designed elevation;

e. repeating the steps to drill and arrange a plurality of pile bodies on the circumferential side of the installation position of the lamp (33);

s3: excavating a working well (1) in the soft soil layer foundation reinforced in the step S2, supporting in the working well (1), and covering a top plate on the working well (1);

s4: drilling a line channel (2) by a drilling machine in the working well (1) in step S3;

s5: a wire grip is placed in the penetrating pipe (21), the penetrating pipe (21) with the wire grip in advance is dragged and laid into the wire pipe channel (2) drilled in the step S4, and supporting slurry (22) is injected between the penetrating pipe (21) and the wire pipe channel (2);

s6: drawing the light cable through the penetration pipe (21) by using the wire drawing device preset in the step S5;

s7: backfilling and reinforcing the working well (1) in the step S3 and installing the lamp (33); the working well (1) support in the step S3 specifically comprises the following steps:

a. performing concrete pouring at the bottom of the working well (1) so as to form a bottom sealing layer (12);

b. installing an anchor net (13) on the inner peripheral side wall of the working well (1) through soil nails, and spraying concrete on the anchor net (13) to form a first supporting layer (14);

c. spraying waterproof paint on the sealing bottom layer (12) formed in the step a and the first protection layer (14) formed in the step b to form a waterproof layer (15);

d. binding reinforcing steel bars (16) on a bottom sealing layer (12) in the working well (1) in the circumferential direction, installing a casting mold, and then casting concrete to form a second supporting layer (17);

the supporting slurry (22) comprises the following raw materials in percentage by weight:

the wire puller comprises an elastic steel wire rope (4), one end of the elastic steel wire rope (4) is provided with a dragging device (5), the dragging device (5) comprises a dragging head (51) fixedly installed on the elastic steel wire rope (4), the dragging head (51) is provided with a clamping piece (6), and the dragging head (51) at one end, far away from the elastic steel wire rope (4), of the clamping piece (6) is further provided with a universal wheel (54);

an installation groove (52) for installing the clamping piece (6) is formed in the drag head (51), and a through hole (53) for a cable to pass through is formed in one end of the installation groove (52); the clamping piece (6) comprises a driving disc (61) rotatably mounted in the mounting groove (52), a plane thread (64) is arranged on the end side wall of one side of the driving disc (61), and a handle (62) is mounted on the end side wall of the other side of the driving disc (61); still seted up sliding groove (65) along length direction in mounting groove (52), slidable mounting has sliding block (66) in sliding groove (65), sliding groove (65) are outer be provided with on sliding block (66) with ring gear (67) of plane screw thread (64) meshing, sliding block (66) are close to grip block (68) are still installed to the one end of through-hole (53).

2. The construction method for the reconstruction of the light on the runway surface of the airport according to claim 1, which is characterized in that: the handle (62) is rotatably connected with the driving disc (61), and an accommodating groove (63) for accommodating the handle (62) is formed in the driving disc (61); the handle is characterized in that a clamping piece (7) is installed in the accommodating groove (63), the clamping piece (7) comprises two elastic clamping rods (71), clamping blocks (72) are installed on the side walls, close to one side, of the two clamping rods (71), and the two clamping blocks (72) form clamping openings of the handle (62).

3. The construction method for the reconstruction of the light on the runway surface of the airport according to claim 1, which is characterized in that: the step S7 specifically includes the following steps:

a. a protective pipe (3) is sleeved on a cable in the working well (1), and the protective pipe (3) is connected with a through pipe (21) in a sealing way;

b. carrying out gravel backfill and pavement of a pavement slab (31) in the working well (1);

c. a grouting hole (32) is formed in the pavement slab (31);

d. grouting through the grouting holes (32) by using a grouting machine;

e. the lamp (33) is fixedly arranged on the panel.

4. The construction method for the reconstruction of the light on the runway surface of the airport according to claim 3, characterized in that: the grouting machine comprises a grouting machine body (8), a feeding pipe (81) is connected to the grouting machine body (8), a non-return part (9) is connected to the feeding pipe (81), the non-return part (9) comprises a non-return pipe (91), one end of the non-return pipe (91) is communicated with the feeding pipe (81), the other end of the non-return pipe (91) is connected with a spray head (82), a support (92) is fixedly mounted in the non-return pipe (91), one end, far away from the spray head (82), of the support (92) is provided with a first telescopic pipe (93), a second telescopic pipe (94) is sleeved in the first telescopic pipe (93) in a sliding mode, one end, far away from the support (92), of the second telescopic pipe (94) is provided with a valve plate (95), and a telescopic spring (96) is sleeved on the first telescopic pipe (93) and the second telescopic pipe (94, two ends of the extension spring (96) are respectively connected with the valve plate (95) and the support (92), and an annular check ring (97) is further mounted on the inner side wall of one end, close to the feeding pipe (81), of the check pipe (91).

5. The construction method for the reconstruction of the light on the runway surface of the airport according to claim 1, which is characterized in that: the step S1 specifically comprises the steps of carrying out plane control measurement and elevation control measurement to determine the installation position of the lamp (33); and the underground pipeline distribution condition is detected through an underground pipeline detector and is compared and confirmed with airport construction design data.