CN110529136B - Municipal sewage pipeline jacking pipe construction method - Google Patents
Municipal sewage pipeline jacking pipe construction method Download PDFInfo
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- CN110529136B CN110529136B CN201910786107.6A CN201910786107A CN110529136B CN 110529136 B CN110529136 B CN 110529136B CN 201910786107 A CN201910786107 A CN 201910786107A CN 110529136 B CN110529136 B CN 110529136B
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- 238000010276 construction Methods 0.000 title claims abstract description 46
- 239000010865 sewage Substances 0.000 title claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 123
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000000178 monomer Substances 0.000 claims description 59
- 238000005553 drilling Methods 0.000 claims description 31
- 238000003860 storage Methods 0.000 claims description 28
- 238000005520 cutting process Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 241000121612 Lepechinia calycina Species 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 14
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 238000012876 topography Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 241000021559 Dicerandra Species 0.000 description 2
- 235000010654 Melissa officinalis Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000865 liniment Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a municipal sewage pipeline jacking pipe construction method which is suitable for municipal sewage pipeline construction with short distance and short construction period and is suitable for construction conditions with complex soil topography. The concrete pipeline is always sleeved with the front end of the drill rod, so that the concrete pipeline is positioned through the drill rod, the conditions of concrete pipeline deviation and sudden soil collapse are reduced, and the concrete pipeline is more easily communicated into the receiving well along a preset route. The reamer and the high-pressure water gun are matched to improve the excavation and transportation efficiency of earthwork in the concrete pipeline, so that the whole construction efficiency of pipe-jacking construction is improved, the construction period is shortened, and the construction method is suitable for construction conditions with short distance, complex geology and poor soil supporting force.
Description
Technical Field
The invention relates to the technical field of tunnel excavation technology, in particular to a municipal sewage pipeline jacking pipe construction method.
Background
The existing pipe jacking construction method is a non-excavation construction method, and pipeline burying can be carried out under the condition of few excavation or no excavation through the construction method. When the pipe jacking construction method works, the jacking force generated by the pipe jacking machine is used for overcoming the friction force between the pipeline and the surrounding soil so as to jack the pipeline into the soil layer according to the designed gradient and carry away earthwork. The tool pipe or the pipe jacking machine is pushed into the receiving pit from the working pit through the soil layer and lifted, and the pipeline penetrates through the soil layer from the working well and enters the receiving well along with the work of the pipe jacking machine. The pipeline is buried between the two pits after following the tool pipe or the heading machine.
However, in actual construction, due to the difference of geographical environments of construction sites, many places are troublesome in pipe jacking construction, such as loose-soil quicksand geology, poor stability after jacking of a machine head, and the problems of machine head displacement and pipe jacking deviation are easy to occur during pipe jacking, the pipe jacking is extremely easy to damage, great inconvenience is brought to pipe jacking construction, the construction efficiency is reduced, and therefore, an improvement space exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a municipal sewage pipeline jacking pipe construction method which has the advantages of improving the positioning effect and the construction efficiency of jacking pipes.
In order to achieve the purpose, the invention provides the following technical scheme:
a municipal sewage pipeline jacking pipe construction method comprises the following steps:
a. excavating a working well and a receiving well: according to the designed pipeline central line and the positions of two ends, a working well and a receiving well are excavated downwards at the selected construction position;
b. installing a crane: a movable crane is erected above the working well and the receiving well;
c. installing jacking equipment in a working well: paving broken stones at the bottom of a working well, embedding wood balms in the broken stones, installing a water storage tank on the wood balms, horizontally installing a pipe-jacking guide rail on the water storage tank, installing pipe-jacking equipment along the direction of the pipe-jacking guide rail, wherein the pipe-jacking equipment is provided with a first jack, and a back wall for supporting the first jack is arranged on a side wall of the working well;
d. installing a drill rod jacking device in the receiving well: paving broken stones at the bottom of the receiving well, burying wood balms in the broken stones, mounting drill bit jacking equipment on the wood balms, wherein the drill bit jacking equipment is provided with a second jack, a back wall for supporting the second jack is arranged on the side wall of the receiving well, the second jack jacks towards the direction of the working well, and a driving motor is fixed at the extending end of the second jack;
e. jacking a first section of drill rod monomer: fixing a first section of drill rod monomer provided with a drill bit and a driving end of a driving motor, jacking through a drill bit jacking device, excavating a positioning hole with the depth of 30-50 cm on the side wall of a receiving well positioned at the front end of the first section of drill rod monomer, jacking the first section of drill rod monomer into the gallery through the cooperation of the drill bit jacking device and the driving motor, and repeating the jacking until the first section of drill rod monomer is completely jacked into the side wall of the receiving well;
f. the drill pipe penetrates through the working well: after the first section of drill rod monomer is jacked, the next section of drill rod monomer is placed between the driving motor and the first section of drill rod monomer, two ends of the new drill rod monomer are respectively and fixedly connected with the driving motor and the first section of drill rod monomer, and the drill bit jacking equipment and the driving motor are repeated to be matched to jack the drill rod monomer until the first section of drill rod monomer penetrates through the side wall of the working well;
g. jacking the first section of concrete pipeline: placing a first section of concrete pipeline on a pipe jacking guide rail, jacking the first section of concrete pipeline through pipe jacking equipment, excavating a tunnel which is 30-50 cm deep and has the same section shape as the first section of concrete pipeline on the side wall of a working well positioned at the front end of the first section of concrete pipeline, concentrically arranging the tunnel and a drill rod, and jacking the first section of concrete pipeline into the tunnel through the pipe jacking equipment;
h. excavating earthwork in the concrete pipeline: driving a reamer arranged in the first concrete pipeline to rotate, continuously jacking the first concrete pipeline by matching with a jacking equipment, spraying water towards the reamer by a high-pressure water gun in the first concrete pipeline, moving the drill rod in a direction far away from the working well by matching of a drill rod jacking equipment and a driving motor, and enabling the moving speed of the concrete pipeline to be the same as that of the drill rod;
i. the concrete pipeline penetrates through the receiving well: after the first section of concrete pipeline is jacked, placing the next section of concrete pipeline on the jacking guide rail, repeatedly jacking the pipeline, withdrawing the drill rod, continuously working by using a reamer and a high-pressure water gun, and jacking all the concrete pipelines until the first section of concrete pipeline penetrates through the receiving well;
j. connecting concrete pipelines: all concrete pipelines are connected and tightly pushed through a concrete socket pipe structure, an annular rubber ring is arranged between a spigot and a bell mouth of the concrete socket pipe structure, a gap of 10-20 mm is reserved between the inner sides of pipe orifices of any two adjacent concrete pipelines after being tightly pushed, and the gap between the two pipes is 10-15 mm; and (4) grouting the pipeline through a grouting hole reserved in the concrete pipeline after the concrete pipeline is tightly jacked.
Through the arrangement, the construction method is suitable for municipal sewage pipeline construction with short distance and short construction period, and is suitable for construction conditions with complex soil topography. Through the length of design pipeline and the position at pipeline both ends, make the both ends of design pipeline stride across complicated topography generally to make the position of working well and receiving well be in more stable soil environment top. After the working well and the receiving well are excavated, movable cranes are set up above the working well and the receiving well, and hoisting, transportation and the like of equipment are carried out through the cranes. Then a jacking pipe jacking device and a drill rod jacking device are respectively installed in the working well and the receiving well, wherein broken stones and wood beams paved at the bottom of the well improve the bearing capacity of the bottom of the well, and a water storage tank is installed at the bottom of the working well and used for supporting and guiding a concrete pipeline and receiving soil broken slag washed by a high-pressure water gun, so that the temporary storage effect is achieved. And back walls in the working well and the receiving well respectively support the first jack and the second jack, so that the drill rod or the concrete pipeline overcomes the friction force of soil to perform jacking movement. The receiving well and the working well are jacked in from the receiving well to the working well through the drill rod consisting of a plurality of sections of drill rod monomers, on one hand, a sharp drill bit is installed at the front end of the drill rod, and the drill rod is jacked in a spiral mode under the action of the drill bit jacking equipment of the driving motor, so that the receiving well and the working well are easier to be jacked in a penetrating mode compared with a concrete pipeline. And can dismantle fixed connection between the drilling rod monomer, drilling rod and the direct fixed connection of drill bit jacking equipment to when the drilling rod link up the situation such as drift sand geology, solution cavity geology, the drilling rod is difficult to whole collapse or is lost, compare down the aircraft nose of independent work easily lose and damage etc.. After the drilling rod runs through completely receiving well and working well, cup joint the concrete pipe on the drilling rod, carry out the jacking through push pipe jacking equipment, the reamer work of installation in the first section concrete pipe cuts the earth in the concrete pipe this moment, and the earth in the first section concrete pipe cuts to the reamer rear under the effect of reamer to erode through the high-pressure squirt and form mud and flow and finally flow to the aqua storage tank along the concrete pipe. Wherein when the in-process that the concrete pipe pushed forward, the drilling rod spiral was retreated, and drilling rod moving rate is the same with the rate of pushing forward of concrete pipe, makes concrete pipe cup joint with the drilling rod front end all the time to fix a position concrete pipe, reduce the condition that concrete pipe squinted and collapse suddenly, make concrete pipe link up to receiving in the well along predetermined route more easily. The reamer and the high-pressure water gun are matched to improve the excavation and transportation efficiency of earthwork in the concrete pipeline, so that the whole construction efficiency of pipe-jacking construction is improved, the construction period is shortened, and the construction method is suitable for construction conditions with short distance, complex geology and poor soil supporting force.
The invention is further provided with an opening above the water storage tank, and the top pipe guide rails are fixed on two sides of the opening above the water storage tank and are attached to the outer peripheral surface of the concrete pipeline.
Through the setting, thereby the setting of aqua storage tank top opening is convenient for wash the mud that forms through high-pressure squirt to outflow in the concrete pipe and is collected to the arc surface of pipe-jacking guide rail for being fixed in aqua storage tank top opening both sides, the arc surface is laminated with the concrete pipe outer peripheral face, thereby supports and leads the concrete pipe.
The invention is further provided with a water storage tank which is communicated with a water outlet pipe, and the other end of the water outlet pipe is communicated with a mortar pump placed on the ground.
Through the arrangement, the water storage tank is communicated with the water outlet pipe, so that slurry in the water storage tank is pumped to the ground under the action of the mortar pump, the dynamic balance of the slurry in the water storage tank is realized, and the condition that the slurry in the water storage tank overflows to pollute the working environment is reduced.
The invention is further provided that the inner peripheral surface of the first section of concrete pipeline is fixedly connected with a support frame, the support frame comprises support legs which are circumferentially spaced by 120 degrees, and a spray head of the high-pressure water gun is fixed with the support legs and is arranged towards the reamer. Before the new concrete pipeline is jacked, the water supply pipe of the high-pressure water gun is detached and connected by a certain length, so that the new water supply pipe penetrates through the interior of the new concrete pipeline.
Through the setting, fixedly connected with carries out the support frame that supports to high-pressure squirt and reamer in first section concrete pipe, and the support frame is connected with first section concrete pipe through the supporting legs that set up each other at an interval to leave the space that supplies mud to flow.
The reamer fixing device is further provided, the support frame is fixedly connected with a rotating motor, and the output end of the rotating motor is fixedly connected with the reamer and drives the reamer to rotate.
Through the setting, thereby the output of rotating the motor rotates with reamer fixed connection through driving motor drive reamer rotation, wherein rotate the motor and include modes such as connection of electric lines or battery power supply and supply power through current power supply mode.
The reamer is further provided with a plurality of cutting openings which are arranged in a penetrating mode, the cutting openings are arranged in a circle at equal angles, and arc-shaped cutting knives are fixed on one sides, facing the receiving well, of the cutting openings.
Through the arrangement, a plurality of cutting openings are communicated on the cutter disc of the reamer, the cutting openings are arranged in an equal-angle circumference mode, and arc-shaped cutting cutters are fixed on one sides, facing the receiving well, of the cuts, so that the reamer can cut earthwork in the concrete pipeline more uniformly and continuously.
The invention is further provided that the outer peripheral surface of the drill rod single body is provided with external threads, and the external threads of the adjacent drill rod single bodies are mutually communicated.
Through the setting, the external screw thread that communicates each other is seted up at the free peripheral face of drilling rod to form the external screw thread at the drilling rod peripheral face, and then make the drilling rod tunnel more easily at the in-process of probing, and the outside thread groove of the peripheral face of drilling rod is followed to drilling rod probing in-process earth, realizes the probing for efficiency.
The drilling rod single body structure is further provided with a cross-shaped connecting piece which is fixed in a protruding mode at one end of the drilling rod single body, a connecting port matched with the connecting piece in shape is formed in the other end of the drilling rod single body, adjacent drilling rod single bodies are matched with the connecting port in an inserting mode through the connecting piece, and fixing pieces are fixed between the adjacent drilling rod single bodies.
Through the setting, the one end protrusion of keeping away from drill bit jacking equipment at the probing is fixed with cross connecting piece, the other end set up with connecting piece shape complex connector, fix through connecting piece and connector grafting cooperation back rethread mounting between the adjacent drilling rod monomer to realize dismantling the connection between the messenger drilling rod monomer, and then realize that the length of drilling rod is adjustable.
The invention further provides that the driving end of the driving motor is provided with a clamping piece which is in inserted connection and matching with the connecting port, and a fixing piece is fixed between the clamping piece and the adjacent drill rod monomer.
Through the setting, be provided with at driving motor's drive end with connector grafting complex joint spare, the shape and the connecting piece of joint spare are similar to fix joint spare and adjacent drilling rod monomer through the mounting, advance the back with drilling rod monomer and be connected new drilling rod monomer between drill bit jacking equipment and drilling rod monomer, thereby continue the jacking drilling rod.
The drill bit is further provided with a clamping interface matched with the shape of the connecting piece at one end of the drill bit, which is far away from the sharp end.
Through the above arrangement, the drill bit is conveniently connected with any drill rod monomer through the arrangement of the clamping interface, so that the adaptability of integral connection of the drill rods is improved, the installation is convenient, and the production cost can be reduced through prefabrication.
In conclusion, the invention has the following beneficial effects:
1. the drill rod is arranged to penetrate from the receiving well to the working well, then the concrete pipeline is sleeved with the drill rod, and the arrangement that the reamer is matched with the high-pressure water gun to clean earthwork in the concrete pipeline is adopted, so that the earthwork between the concrete pipeline and the drill rod is relatively isolated, the reamer and the high-pressure water gun are convenient to clean, the drill rod keeps the same moving speed in the jacking process of the concrete pipeline, the concrete pipeline is always sleeved with the drill rod, the drill rod is used for guiding the concrete pipeline, and the drill rod can also support the concrete pipeline in the soil environment easy to sink;
2. the ejector rods are clamped and connected by the ejector rod single bodies through the connecting pieces and the connecting ports and are fixed through the fixing pieces, so that torque can be transmitted between the ejector rod single bodies, and the ejector rod single bodies cannot be separated in the advancing and retreating processes;
3. be connected with the reamer through at first section concrete pipe internal rotation, be provided with the high-pressure squirt towards the reamer direction in one side that the reamer is close to the working well to erode into mud through the high-pressure squirt with the earth under the cutting, and then make mud flow to the aqua storage tank along concrete pipe in, realize cleaing away the earthwork in the first section concrete pipe.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a sectional view of the construction of this embodiment;
FIG. 3 is a schematic structural diagram of the first concrete pipe in this embodiment;
FIG. 4 is an enlarged view taken at A in FIG. 3;
fig. 5 is a schematic structural diagram of the single drill rod, the drill bit and the driving motor in the embodiment.
Reference numerals: 1. a working well; 11. jacking equipment; 12. a water storage tank; 121. a water outlet pipe; 122. a mortar pump; 13. a pipe jacking guide rail; 14. a first jack; 2. a receiving well; 21. a drill bit jacking device; 22. a second jack; 23. a drive motor; 231. a clamping piece; 3. a crane; 4. a drill rod monomer; 41. a drill bit; 42. a connecting member; 43. a connecting port; 44. a card interface; 5. a concrete pipe; 51. a reamer; 511. cutting a notch; 512. a cutting blade; 52. a high pressure water gun; 53. a support frame; 54. supporting legs; 55. the motor is rotated.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figures 1 to 2, the invention discloses a municipal sewage pipeline jacking pipe construction method, which comprises the following steps:
a. excavating a working well 1 and a receiving well 2: according to the center line and the positions of two ends of the designed pipeline, a working well 1 and a receiving well 2 are excavated downwards at the selected construction position; the net depth of the working well 1 and the receiving well 2 is three meters to nine meters, reinforced concrete is poured on the peripheral side walls of the working well 1 and the receiving well 2, concrete back covers are paved at the bottoms of the working well 1 and the receiving well 2, and reinforced concrete bottom plates (not shown in the figure) are poured, so that the bearing capacity of the bottoms of the working well 1 and the receiving well 2 is improved.
b. And (3) installing a crane: a movable crane 3 is erected above the working well 1 and the receiving well 2; establish movable work platform on working well 1, the receiving well 2, establish the crane boom on the movable work platform, crane boom dress hoist 3 to realize hoist 3's removal, and then conveniently hoist the equipment in working well 1, the receiving well 2.
c. The jacking equipment 11 for the jacking pipe in the working well 1 is installed: paving broken stones (not shown in the figure) at the bottom of the working well 1, embedding balks (not shown in the figure) in the broken stones, installing a water storage tank 12 on the balks, horizontally installing a pipe-jacking guide rail 13 on the water storage tank 12, installing pipe-jacking equipment 11 along the direction of the pipe-jacking guide rail 13, wherein the pipe-jacking equipment 11 is provided with a first jack 14, and a back wall for supporting the first jack 14 is arranged on the side wall of the working well 1; the supporting capacity of the side wall of the working well 1 for the first jack 14 is improved through the back wall.
d. And (3) installing a drill rod jacking device in the receiving well 2: paving broken stones at the bottom of the receiving well 2, burying balms in the broken stones, mounting a drill 41 jacking device 21 on the balms, arranging a second jack 22 on the drill 41 jacking device 21, arranging a back wall for supporting the second jack 22 on the side wall of the receiving well 2, jacking the second jack 22 towards the direction of the working well 1, and fixing a driving motor 23 at the extending end of the second jack 22; the supporting capacity of the side wall of the working well 1 for the second jack 22 is improved through the back wall.
e. Jacking a first section of drill rod: fixing the first section of drill rod monomer 4 provided with the drill bit 41 with the driving end of the driving motor 23, jacking through the drill bit 41 jacking equipment 21, excavating a positioning hole with the depth of 30-50 cm on the side wall of the receiving well 2 positioned at the front end of the first section of drill rod monomer 4, jacking the first section of drill rod monomer 4 into the tunnel through the cooperation of the drill bit 41 jacking equipment 21 and the driving motor 23, and repeating the jacking until the first section of drill rod monomer 4 is completely jacked into the side wall of the receiving well 2; after the first section of drill rod monomer 4 is jacked into the side wall of the receiving well 2, the driving motor 23 is disconnected with the first section of drill rod monomer 4.
f. The drill rod penetrates through the working well 1: after the first section of drill rod monomer 4 is jacked, the next section of drill rod monomer 4 is placed between the driving motor 23 and the first section of drill rod monomer 4, two ends of the new section of drill rod monomer 4 are respectively and fixedly connected with the driving motor 23 and the first section of drill rod monomer 4, and the jacking equipment 21 of the drill bit 41 and the driving motor 23 are repeated to be matched with each other to jack the drill rod monomer 4 until the first section of drill rod monomer 4 penetrates through the side wall of the working well 1; the second jack 22 and the driving motor 23 are moved backwards by the first section of drill rod monomer 4, the second section of drill rod monomer 4 is hoisted to a position between the first section of drill rod monomer 4 and the driving motor 23 through the crane 3, the second section of drill rod monomer 4 is connected with the first section of drill rod monomer 4 and the driving motor 23 respectively, and the jacking process is continued.
g. Jacking the first section of concrete pipeline 5: placing a first section of concrete pipeline 5 on a pipe jacking guide rail 13, jacking through a pipe jacking device 11, excavating a tunnel which is 30-50 cm deep and has the same section shape as the first section of concrete pipeline 5 on the side wall of a working well 1 positioned at the front end of the first section of concrete pipeline 5, arranging the tunnel and a drill rod concentrically, and jacking the first section of concrete pipeline 5 into the tunnel through the pipe jacking device 11;
h. excavating earthwork in the concrete pipeline 5: driving a reamer 51 arranged in the first concrete pipeline 5 to rotate, continuously jacking the first concrete pipeline 5 by matching with a jacking equipment 11, spraying water towards the reamer 51 by a high-pressure water gun 52 in the first concrete pipeline, moving the drill rod to a direction far away from the working well 1 under the matching of a drill rod jacking equipment and a driving motor 23, wherein the moving speed of the concrete pipeline 5 is the same as that of the drill rod;
i. the concrete pipe 5 penetrates the receiving well 2: after the first section of concrete pipeline 5 is jacked, placing the next section of concrete pipeline 5 on the pipe jacking guide rail 13, and repeatedly jacking the pipeline and withdrawing the drill rod, wherein the reamer 51 and the high-pressure water gun 52 continuously work to jack all the concrete pipelines 5 until the first section of concrete pipeline 5 penetrates through the receiving well 2; wherein after the first section concrete pipe 5 jacks a part, the first jack 14 is contracted, the second section concrete pipe 5 is hoisted to the top pipe guide rail 13 through the crane 3 and is connected with the first section concrete pipe 5, so that the jacking process is continued through the first jack 14 until the first section concrete pipe 5 penetrates through the receiving well 2. Before the new concrete pipe 5 is pushed in, the water supply pipe of the high-pressure water gun 52 is detached and connected by a certain length, so that the new water supply pipe passes through the inside of the new concrete pipe 5.
j. The concrete pipeline 5 is connected: all concrete pipelines 5 are connected and tightly propped through a concrete socket pipe structure, an annular rubber ring is arranged between a spigot and a bell mouth of the concrete socket pipe structure, a gap of 10-20 mm is reserved on the inner side of the pipe orifice of any two adjacent concrete pipelines 5 after being tightly propped, and the gap between the two pipes is 10-15 mm; and (3) after the concrete pipeline 5 is tightly jacked, performing pipeline grouting through a grouting hole reserved in the concrete pipeline 5.
As shown in fig. 3 to 4, the top opening of the water storage tank 12 is provided, wherein the top pipe guide rails 13 are fixed at two sides of the top opening of the water storage tank 12, and the top pipe guide rails 13 are slideways with a cross section of a circular arc shape attached to the outer peripheral surface of the concrete pipeline 5, so that the concrete pipeline 5 is guided and limited by the top pipe guide rails 13. Wherein the aqua storage tank 12 is communicated with a water outlet pipe 121, the other end of the water outlet pipe 121 is communicated with a mortar pump 122 placed on the ground, the slurry which is flushed by the high-pressure water gun 52 and collected in the aqua storage tank 12 is pumped to the ground through the mortar pump 122, and the pollution to the working well 1 caused by the overflow of the aqua storage tank 12 is reduced.
A support frame 53 is fixed on the inner peripheral surface of the first concrete pipe 5, the support frame 53 comprises three groups of support legs 54 which are circumferentially spaced by 120 degrees, and the support legs 54 are fixed on the inner peripheral surface of the concrete pipe 5. The nozzle of the high-pressure water gun 52 is fixed with the supporting foot 54 and arranged towards the reamer 51, the rotating motor 55 is fixedly connected with the supporting frame 53, the output end of the rotating motor 55 is arranged towards the drill rod, the reamer 51 is fixed with the output end of the rotating motor 55, and the rotating motor 55 drives the reamer 51 to rotate.
The reamer 51 is in a disc shape, the reamer 51 and the concrete pipeline 5 are concentrically arranged, a plurality of cutting openings 511 penetrate through the reamer 51, the plurality of cutting openings 511 are arranged in an equiangular circumference mode, an arc-shaped cutting knife 512 is fixed on one side of a writing gap facing the direction of the drill rod in a protruding mode, and the reamer 51 faces the direction of a cutting edge of the cutting knife 512.
As shown in fig. 3 and 5, the drill rod is composed of a plurality of drill rod single bodies 4, external threads are formed on the outer peripheral surfaces of the drill rod single bodies 4, and the external threads of the adjacent drill rod single bodies 4 are communicated with each other. One end of the drill rod single body 4 is fixed with a cross-shaped connecting piece 42 in a protruding mode, and the other end of the drill rod single body is provided with a connecting port 43 matched with the connecting piece 42 in shape. The adjacent rotating rod single bodies are matched with the connecting ports 43 in a splicing mode through the connecting pieces 42 along the axial direction, fixing pieces are connected between the adjacent drill rod single bodies 4, and the fixing pieces are countersunk screws penetrating through the drill rod single bodies 4 and the connecting pieces 42 of the adjacent drill rod single bodies 4. So that the connecting piece 42 and the connecting port 43 can transmit torque between the adjacent drill rod single bodies 4, and the drill rod single bodies 4 are not easy to separate when moving along the axial direction.
Wherein the drive end of driving motor 23 is fixed with the cross joint piece 231 of pegging graft complex with connector 43 to the drive end of drilling rod monomer 4 and driving motor 23 is connected through connector 43 and the grafting mode of joint piece 231, and fixes through the mounting, and the mounting is for lining up drilling rod monomer 4 and the countersunk screw of joint piece 231.
The one end that the drill bit 41 keeps away from the sharp-pointed end is seted up with connecting piece 42 shape fit's joint mouth 44, and drill bit 41 passes through joint mouth 44 and is pegged graft with connecting piece 42 and through countersunk screw thread tightening, can dismantle drill bit 41 when drill bit 41 runs through working well 1 after with drilling rod reverse movement again.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. A municipal administration sewage pipes jacking pipe construction method is characterized in that: the method comprises the following steps:
a. excavating a working well (1) and a receiving well (2): according to the design pipeline central line and the positions of two ends, a working well (1) and a receiving well (2) are excavated downwards at the selected construction position;
b. installing a crane (3): a movable crane (3) is erected above the working well (1) and the receiving well (2);
c. the jacking equipment (11) for the jacking pipe in the working well (1) is installed: broken stones are paved at the bottom of the working well (1), wood balms are buried in the broken stones, a water storage tank (12) is installed on the wood balms, a pipe jacking guide rail (13) is horizontally installed on the water storage tank (12), pipe jacking equipment (11) is installed along the direction of the pipe jacking guide rail (13), a first jack (14) is arranged on the pipe jacking equipment (11), and a back wall used for supporting the first jack (14) is arranged on the side wall of the working well (1);
d. the installation of the drill rod jacking equipment in the receiving well (2): broken stones are paved at the bottom of the receiving well (2), wood balms are buried in the broken stones, drill bit (41) jacking equipment (21) is installed on the wood balms, a second jack (22) is arranged on the drill bit (41) jacking equipment (21), a back wall used for supporting the second jack (22) is arranged on the side wall of the receiving well (2), the second jack (22) jacks towards the working well (1), and a driving motor (23) is fixed at the extending end of the second jack (22);
e. the first section of drill rod monomer (4) is jacked: fixing a first section of drill rod monomer (4) provided with a drill bit (41) and a driving end of a driving motor (23), jacking through a drill bit (41) jacking device (21), excavating a positioning hole with the depth of 30-50 cm on the side wall of a receiving well (2) positioned at the front end of the first section of drill rod monomer (4), jacking the first section of drill rod monomer (4) into a gallery through the cooperation of the drill bit (41) jacking device (21) and the driving motor (23), and repeating the jacking until the first section of drill rod monomer (4) is completely jacked into the side wall of the receiving well (2);
f. drilling rod through working well (1): after a first section of drill rod monomer (4) is jacked, a next section of drill rod monomer (4) is placed between a driving motor (23) and the first section of drill rod monomer (4), two ends of a new section of drill rod monomer (4) are respectively and fixedly connected with the driving motor (23) and the first section of drill rod monomer (4), a drill bit (41) is repeatedly jacked into the drill rod monomer (4) in a manner of matching with the driving motor (21) and the driving motor (23) until the first section of drill rod monomer (4) penetrates through the side wall of a working well (1), wherein the outer peripheral surface of the drill rod monomer (4) is provided with external threads, the external threads of adjacent drill rod monomers (4) are mutually communicated, one end of the drill rod monomer (4) is convexly fixed with a cross-shaped connecting piece (42), the other end of the drill rod monomer is provided with a connecting port (43) matched with the connecting piece (42) in a shape, and the adjacent drill rod, a fixing piece is fixed between the adjacent drill rod single bodies (4);
g. jacking a first section of concrete pipeline (5): placing a first section of concrete pipeline (5) on a pipe jacking guide rail (13), jacking through a pipe jacking device (11), excavating a tunnel with the depth of 30-50 cm and the same section shape as that of the first section of concrete pipeline (5) on the side wall of a working well (1) at the front end of the first section of concrete pipeline (5), arranging the tunnel and a drill rod concentrically, and jacking the first section of concrete pipeline (5) into the tunnel through the pipe jacking device (11);
h. excavating earthwork in the concrete pipeline (5): driving a reamer (51) installed in a first section of concrete pipeline (5) to rotate, continuously jacking the first section of concrete pipeline (5) by matching with a jacking equipment (11), spraying water towards the reamer (51) by a high-pressure water gun (52) in the first section of concrete pipeline, moving a drill rod to a direction far away from a working well (1) under the matching of a drill rod jacking equipment and a driving motor (23), and enabling the moving speed of the concrete pipeline (5) to be the same as that of the drill rod;
i. the concrete pipeline (5) penetrates through the receiving well (2): after the first section of concrete pipeline (5) is jacked, placing the next section of concrete pipeline (5) on the jacking guide rail (13), and repeatedly jacking the pipeline and withdrawing the drill rod, wherein the reamer (51) and the high-pressure water gun (52) continuously work to jack all the concrete pipelines (5) until the first section of concrete pipeline (5) penetrates through the receiving well (2);
j. connecting concrete pipelines (5): all concrete pipelines (5) are connected and tightly propped through a concrete bell and spigot pipe structure, an annular rubber ring is arranged between a spigot and a socket of the concrete bell and spigot pipe structure, a gap of 10-20 mm is reserved on the inner side of the pipe orifice of any two adjacent concrete pipelines (5) after being tightly propped, and the gap between the two pipes is 10-15 mm; and (3) after the concrete pipeline (5) is tightly jacked, grouting the pipeline through a grouting hole reserved in the concrete pipeline (5).
2. The municipal sewage pipeline jacking pipe construction method according to claim 1, wherein the method comprises the following steps: the top opening of the water storage tank (12) is arranged, and the top pipe guide rail (13) is fixed on two sides of the top opening of the water storage tank (12) and is attached to the outer peripheral surface of the concrete pipeline (5).
3. The municipal sewage pipeline jacking pipe construction method according to claim 2, wherein: the water storage tank (12) is communicated with a water outlet pipe (121), and the other end of the water outlet pipe (121) is communicated with a mortar pump (122) placed on the ground.
4. The municipal sewage pipeline jacking pipe construction method according to claim 1, wherein the method comprises the following steps: the inner peripheral surface of the first concrete pipeline (5) is fixedly connected with a support frame (53), the support frame (53) comprises support legs (54) which are circumferentially spaced by 120 degrees, and a spray head of a high-pressure water gun (52) is fixed with the support legs (54) and faces towards the reamer (51).
5. The municipal drainage pipeline jacking pipe construction method according to claim 4, wherein: the support frame (53) is fixedly connected with a rotating motor (55), and the output end of the rotating motor (55) is fixedly connected with the reamer (51) and drives the reamer (51) to rotate.
6. The municipal sewage pipeline jacking pipe construction method according to claim 1, wherein the method comprises the following steps: a plurality of cutting openings (511) penetrate through the reamer (51), the cutting openings (511) are arranged at equal angles in a circumferential mode, and an arc-shaped cutting knife (512) is fixed on one side, facing the receiving well (2), of each cutting opening (511).
7. The municipal sewage pipeline jacking pipe construction method according to claim 1, wherein the method comprises the following steps: the driving end of the driving motor (23) is provided with a clamping piece (231) which is matched with the connecting port (43) in an inserting mode, and a fixing piece is fixed between the clamping piece (231) and the adjacent drill rod single body (4).
8. The municipal sewage pipeline jacking pipe construction method according to any one of claims 1 to 7, wherein: and one end of the drill bit (41) far away from the sharp end is provided with a clamping interface (44) matched with the connecting piece (42) in shape.
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| CN111287215B (en) * | 2020-02-10 | 2021-06-18 | 湖南省西城建设有限公司 | Structure crossing urban road underground passage and construction method thereof |
| CN111706710B (en) * | 2020-06-03 | 2021-09-17 | 安徽华仁路桥工程有限公司 | Town road pipe jacking construction safety equipment and construction method thereof |
| CN112459799A (en) * | 2020-11-23 | 2021-03-09 | 张同勇 | Construction method of underground water supply pipeline |
| CN112695803B (en) * | 2020-12-29 | 2022-03-29 | 中交第三航务工程局有限公司 | Supporting and water-stopping construction method for pipe-jacking working well and pipe ditch on beach |
| CN113803520B (en) * | 2021-09-22 | 2022-06-03 | 广东大福建设有限公司 | Efficient and accurate municipal pipe jacking construction process |
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