CN112267889B - Construction method for penetrating through filling material of molten cavity - Google Patents
Construction method for penetrating through filling material of molten cavity Download PDFInfo
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- CN112267889B CN112267889B CN202011159113.8A CN202011159113A CN112267889B CN 112267889 B CN112267889 B CN 112267889B CN 202011159113 A CN202011159113 A CN 202011159113A CN 112267889 B CN112267889 B CN 112267889B
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 230000005641 tunneling Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 239000002689 soil Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 3
- 230000002588 toxic effect Effects 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims 5
- 239000000945 filler Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 9
- 238000009435 building construction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
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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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to the technical field of building construction, and discloses a construction method for penetrating through a cavity filler, which comprises the following steps: (1) construction preparation: calculating jacking force of a jacking pipe, measuring lofting, setting a working well and a receiving well; (2) installing jacking equipment: the method comprises the steps of guide rail installation, backrest installation and jack installation; (3) preparing a tunneling tool: preparing a trolley, a spade, a pick and a shovel tool; (4) jacking construction: the method comprises the steps of jacking equipment construction, earth excavation and earth removal, casing joint processing, ventilation in a pipe, pipe jacking receiving and fixed sealing. By adopting the method, the problem of high construction difficulty in the prior art can be solved, and the situations of mud gushing and the like are avoided.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for penetrating through a cavity filler.
Background
At the stage of rapid economic development, in order to improve the economy along the mountain area, the state vigorously develops passenger and goods collinear railways, in order to improve the speed, more tunnels are selected for mountain crossing and mountain crossing, and the Kaster area is mostly encountered in special geology such as karst, underground river, large-scale filling dissolving cavity and the like. In the tunnel construction process, the scale of karst and underground river sections is large, and water gushing, mud gushing and mud outburst are often caused. The drainage of the karst underground river of the conventional tunnel is mainly sparse, the blocking and drainage are combined, the karst underground river intersected with the tunnel main tunnel is drained to an existing water system channel which does not influence the later-stage tunnel operation in a diversion tunnel mode, however, geological change is large, the limitation of the karst detection first section is large, uncertain factors are many, the construction of the diversion channel still faces unfavorable geology such as karst, water burst and mud gushing, the subsequent engineering of the whole tunnel is restricted by karst underground river treatment engineering, the construction safety risk is large, the construction period is long, and the cost is high.
Disclosure of Invention
The invention aims to provide a construction method for penetrating through a molten cavity filler, which can solve the problems of high construction difficulty and easiness in causing mud gushing during molten cavity construction in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a construction method for penetrating through a cavity filler comprises the following steps:
(1) Construction preparation: calculating jacking force of a jacking pipe, measuring lofting, setting a working well and a receiving well;
(2) Installing jacking equipment: the method comprises the steps of installing a guide rail, a backrest and a jack;
(3) Preparing a tunneling tool: preparing a trolley, a spade, a pickaxe and a shovel tool;
(4) And (3) jacking construction: the method comprises the steps of jacking equipment construction, manual entry of jacking pipes for digging, unearthing, casing pipe interface treatment, pipe ventilation, jacking pipe receiving and fixed sealing.
The principle and the beneficial effect of this scheme of adoption lie in: in the scheme, the friction force between the pipeline and the surrounding soil is overcome by means of the jacking force generated by the jacking equipment in the working pit, the pipeline is jacked into the soil according to the designed gradient, and the earthwork is transported away. After the pipe body of one section is pushed into the soil layer, the pipe body of the second section is pushed in continuously. By means of the thrust of the main jacking oil cylinder, the thrust of the pipeline and the thrust of the relay, the tool pipe penetrates through the soil layer from the working pit and is pushed into the receiving pit. Provides a safe operation environment for operating personnel who pass through the dissolution cavity filling to loosen the accumulation body, and simultaneously reduces the construction disturbance to the accumulation body.
Further, the construction of the jacking equipment in the step (4) comprises the following steps:
1) Installing jacking iron, firmly extruding, starting an oil pump, pushing a jack in, extending a piston out of a working stroke, and pushing a jacking pipe forward for a certain distance;
2) Stopping the oil pump, opening the control valve, returning oil to the jack, and retracting the piston;
3) Adding top iron, and repeating the operation until the next section of pipe body needs to be installed;
4) Lift off the top iron, the low tube, after water stopping rubber circle was sheathe in at steel pipe interface department, start the oil pump body interface connection steel bell mouth in, after water stopping rubber circle got into the steel bell mouth completely, continue the top and advance.
Further, the step (4) includes wetting the tube body.
Further, in the step (4), the 2 sections of pipe joints at the front end are reserved for the time without clearing, and the pipe joints are cleared after being communicated.
Further, in the step (4), a special sealing ring for the pipe orifice of the sleeve is used for waterproof sealing. The sealing ring should be water-swelling type to ensure the seam between the lantern rings to be tightly attached.
Further, in the step (4), before and during the manual excavation, an axial flow blower is adopted to supply air through the ventilation pipe
Further, the step (4) also comprises a monitoring process of gas and toxic and harmful gases.
Further, the step (4) also comprises a measuring and deviation rectifying process.
Furthermore, in the measuring and deviation correcting process, when one jacking pipe is installed in the jacking process, the direction and the axial direction of the jacking pipe are retested, the handheld infrared distance measuring instruments are respectively attached to the top, the middle and the lower parts of the pipe wall to detect whether the distance between infrared rays and the pipe wall is consistent, and whether the directions of the previous jacking pipe and the next jacking pipe are on the same line.
Further, in the process of fixing and sealing, after the top pipe is cleaned, concrete is adopted to carry out mould closing pouring to wrap the top pipe, and the wrapping length is 1.5 sections of the top pipe; and simultaneously, the gap between the blocking wall and the jacking pipe is blocked.
Drawings
FIG. 1 is a schematic diagram of a working well floor plan in an embodiment of a construction method for filling material passing through a cavity according to the present invention;
FIG. 2 is a schematic view of a pipe body being pushed in according to an embodiment of the construction method for filling material passing through a cavity of the present invention;
FIG. 3 is a schematic structural view of a push bench according to a second embodiment of the construction method for penetrating filler in a cavity of the present invention;
FIG. 4 is a perspective view of a cutter head in a third embodiment of a construction method for passing through a filler in a cavity according to the present invention;
fig. 5 is another perspective view of a cutter head in a third embodiment of a construction method for filling material through a cavity according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a backrest 1, a receiving well 2, a shell 3, a motor 4, a transmission part 5, a soil bin 6, a disc body 7, a screw rod 8, a nut 9, a connecting frame 10, a connecting plate 11, a connecting rod 12, a connecting ring 13, a second gear 14, a guide rail 15, a tube body 16, a filler 17, a rotating shaft 18, a first gear 19, a supporting plate 20, a cutter 21, a top iron 24 and a jack 25.
Example one
As shown in fig. 1 and fig. 2, a construction method for penetrating through a cavity filler comprises the following steps:
(1) Construction preparation: calculating jacking pipe jacking force, measuring lofting, setting a working well and a receiving well 2; the receiving well utilizes the excavated water diversion channel as a space, after the bottom plate is hardened, a reinforced concrete blocking wall with the thickness of 1.5 m is constructed at the position where the sludge edge returns by two meters, and a receiving hole is reserved below the blocking wall;
(2) Installing jacking equipment: comprises the installation of a guide rail 15, the installation of a backrest 1 and the installation of a jack 25; the central line of the guide rail is the same as the jacking axis, after the guide rail is installed, the axis is corrected, and the rails are fixed by concrete; the backrest is made of C35 reinforced concrete, is integrally in an inverted trapezoid shape, and the lower part of the backrest is embedded into a rock body 1m.
(3) Preparing a tunneling tool: preparing a trolley, a spade, a pickaxe and a shovel tool;
(4) And (3) jacking construction: the method comprises the steps of jacking equipment construction, earth excavation and earth removal, casing joint processing, ventilation in a pipe, pipe jacking receiving and fixed sealing.
The construction of the jacking equipment in the step (4) comprises the following steps:
1) Installing the jacking iron 24, firmly extruding, starting an oil pump, jacking by a jack, extending a piston out of a working stroke, and pushing the jacking pipe forward for a certain distance;
2) Stopping the oil pump, opening the control valve, returning oil to the jack, and retracting the piston;
3) Adding the top iron 24, and repeating the operation until the next section of the pipe body needs to be installed;
4) And (3) dismounting the top iron 24, lowering the pipe, sleeving a water-stopping rubber ring at the steel pipe interface, starting the oil pump to connect the interface of the pipe body 16 into the steel bell mouth, and continuing jacking after the water-stopping rubber ring completely enters the steel bell mouth.
And (4) wetting the pipe body, wherein a wetted inclusion is formed between the pipe body and the sludge in the jacking operation, so that the resistance can be reduced.
The step (4) also comprises abnormal condition processing. When the jacking pressure is suddenly increased or the jacking pipe is deviated in the jacking process. At the moment, the front part of the pipe can encounter obstacles, so that the counterforce is increased, and the obstacle is positioned on one side of the pipe jacking, so that the pipe jacking with uneven stress deviates; at the moment, the pipe jacking operation is suspended, the jacking speed is reduced, each stroke is shortened, the pipe jacking direction is checked, and the pipe jacking can be retreated for multiple times if necessary. And the pressure is suddenly reduced, namely the pipe jacking device is possibly in a working area to be penetrated through the pipe jacking, the thrust and the jacking speed of the jack are reduced, the pipe jacking direction is checked, and the pipe jacking can be ensured to pass through smoothly.
In the step (4), the special sealing ring for the pipe orifice of the casing pipe is sealed in a waterproof way, and the sealing ring is expanded when meeting water so as to ensure that the gaps between the lantern rings are tightly attached.
And (4) before and during the manual excavation, an axial flow blower is adopted to supply air through the ventilation pipe. And (5) reserving the front end 2 sections of pipe sections in the step (4), temporarily not clearing, and clearing after the pipe sections are communicated.
The step (4) also comprises a monitoring process of gas and toxic and harmful gases.
And (4) measuring and correcting. In the measuring and deviation rectifying process, when one jacking pipe is installed in the jacking process, the direction and the axial direction of the jacking pipe are retested, and the handheld infrared distance measuring instruments are respectively attached to the top, the middle and the lower parts of the pipe wall to detect whether the distance between infrared rays and the pipe wall is consistent or not, and whether the direction of the previous jacking pipe and the direction of the next jacking pipe are on the same line or not.
In the process of fixing and sealing, after the top pipe is cleaned, concrete is adopted to carry out mould closing pouring to wrap the top pipe, and the wrapping length is 1.5 sections of the top pipe; and simultaneously, the gap between the plugging wall and the jacking pipe is plugged.
The guide rail is formed by fixing two parallel wheels on a steel bracket, and has the main functions of enabling the pipe body to have stable guide in jacking and enabling the pipe body to enter a soil body along the guide; and a reliable bracket can be provided when the top iron works. The jack is the power that the push pipe impeld, and the pressure oil of jack is supplied with through high pressure fuel pipe by main top oil pump, and the maximum thrust of jack is 500T, and advancing and withdrawing of jack is through control panel control, and it is prior art, knows for the skilled person, and the no longer will be described herein.
In the scheme, the friction force between the pipeline and the surrounding soil is overcome by means of the jacking force generated by the jacking equipment in the working pit, the pipeline is jacked into the soil according to the designed gradient, and the earthwork is transported away. After the pipe body of one section is pushed into the soil layer, the pipe body of the second section is pushed into continuously. By means of the thrust of the main jacking oil cylinder, the thrust of the pipeline and the thrust of the relay, the tool pipe penetrates through the soil layer from the working pit and is pushed into the receiving pit. Provides a safe operation environment for operators who pass through the karst cave filling materials 17 to loosen the accumulation body and simultaneously reduces the construction disturbance to the accumulation body.
In the scheme, a bypassing mode is generally adopted for a section penetrating through the filler 17 in a limited space, and compared with a pipe jacking process, the bypassing mode increases the length of a channel and increases the cost; the jacking pipe is communicated with the pipeline in the shortest distance between two points, the price of the adopted pipe is lower than the price of each linear meter of the channel, and the cost is obviously saved.
Example two
As shown in fig. 3, the push bench in this embodiment includes a housing 3, a driving mechanism and a cutter head, an installation bin is provided in the housing 3, the driving mechanism is installed in the installation bin, specifically, the driving mechanism includes a motor 4 and a transmission part 5, the motor 4 is fixedly connected with the installation bin through a bolt, and an output shaft of the motor 4 drives the cutter head to rotate through the transmission part 5. A soil bin 6 is also arranged in the shell 3, and a high-pressure spray head is also arranged in the soil bin 6.
Adopt the pipe pushing jack in this embodiment, at the pipe pushing in-process, motor 4 rotates and rotates to smash earth, stone etc. through 5 drive blade disc of transmission portion, smashes the in-process, and high pressure nozzle sprays water to the muddy water storehouse to the blade disc is smashed earth and stone etc..
EXAMPLE III
As shown in fig. 4 and 5, the difference between the present embodiment and the second embodiment is that the cutter head includes a tray body 7, a plurality of support plates 20 are arranged in the circumferential direction of the tray body 7, the number of the support plates 20 in the present embodiment is four, and four support plates 20 are uniformly arranged in the circumferential direction of the tray body 7. One end of the support plate 20 is hinged to the tray body 7 through a hinge (not shown). A sliding groove is arranged in the radial direction of the disc body 7, a connecting plate 11 is arranged on one end face of the disc body 7, and the connecting plate 11 is in sliding connection with the disc body 7 through the sliding groove. The sliding direction is the radial direction of the tray body, the supporting plate and the tray body are coplanar in the original state, and the end part of the connecting plate far away from the center of the 3 circles of the tray body is connected with the supporting plate, so that the supporting plate can not rotate around the hinged position of the supporting plate and the tray body. The transmission part is connected with a first gear 19 through a coupler, a second gear 14 is arranged at the center of the cutter head, and the second gear 14 is rotatably connected with the cutter body 7 through a rotating shaft 18. The first gear 19 meshes with the second gear 14.
An oil cylinder (not shown in the figure) is also arranged in the shell 3, and a stop block is welded on an output shaft of the oil cylinder. The middle part of the disk body 7 is connected with a screw 8, and the screw 8 is coaxially connected with a second gear 14. The screw 8 is in threaded fit with a nut 9, the nut 9 in the embodiment is a hexagonal nut 9, and one end of the stop can abut against one side of the hexagonal nut 9. In this embodiment, a connection ring 13 is further included, and the connection ring 13 is coaxially and rotatably connected with the nut 9. The embodiment also comprises a connecting rod 12, wherein one end of the connecting rod 12 is hinged with the connecting ring 13, and the other end of the connecting rod 12 is hinged with the connecting plate 11.
In this embodiment, a plurality of cutting tools 21 are further disposed around the cutter head, and the number of the cutting tools 21 in this embodiment is four. Four cutting tools 21 are evenly arranged along the circumferential direction of the disc body 7 and spaced from the support plate 20. The cutting tool 21 comprises a tool 21 body and a connecting frame 10, and the tool 21 is connected with the connecting frame 10.
The specific implementation process is as follows, when the push bench jacks in, and the cutter disc is located at the port of the shell 3, at this time, the support plate 20 and the disc body 7 are coplanar, the diameter of the circle surrounded by the support plate 20 is equal to the diameter of the pipe body 16, namely, the contact area between the cutter disc and rocks, soil and the like is the largest, so that the soil during push bench can be supported. When the pipe is pushed, the power mechanism drives the cutter disc to rotate, the cutter disc cuts or crushes soil, rocks and the like through the cutting tool 21 when rotating, an axial force is applied to the pipe pushing jack through the steel pipe by matching with the main jack 25, the pipe pushing jack is axially moved, and the effect of pushing the steel pipe is achieved. When the tool needs to return, the oil cylinder is started, a piston rod of the oil cylinder extends out and pushes the stop dog to abut against the nut 9, the nut 9 is in threaded fit with the screw rod 8 at the moment, the cutter head rotates to drive the screw rod 8 to rotate, the nut 9 cannot rotate due to abutting against the stop dog at the moment, and the nut can axially move at the moment. That is, the nut 9 moves along the axial direction of the screw 8 and drives the connecting ring 13 to move, the connecting ring 13 drives the connecting plate 11 to move towards the direction close to the center of the circle of the disc body 7, that is, the angle formed by the connecting rod 12 and the screw 8 becomes smaller, in the process, the supporting plate 20 rotates along the hinged position between the supporting plate and the disc body under the pressure of rock soil, so that the area of the whole cutter head becomes smaller, and the cutter head can enter the shell 3 to complete the retraction.
By adopting the push bench of the embodiment, in the process of pushing the steel pipe, the nut 9 does not move, a stable triangular structure is formed among the connecting rod 12, the screw 8 and the disk body 7, and at the moment, the middle part of the connecting plate 11 is positioned at the hinged position of the support plate 20 and the disk body 7 and supports the support plate 20 to avoid the rotation of the support plate 20. The round shape of the plurality of support plates 20 can support the soil in the jacking pipe. When the push bench needs to be retracted, the connecting plate 11 can move towards the center of the disc body 7 only by driving the piston rod of the oil cylinder to extend, and the supporting plate 20 rotates, so that the diameter of the cutter head is reduced, and the cutter head can enter the pipe body 16 to be retracted.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A construction method for penetrating through a filling material of a cavity is characterized in that: the method comprises the following steps:
(1) Construction preparation: calculating jacking force of a jacking pipe, measuring lofting, setting a working well and a receiving well;
(2) Installing jacking equipment: installing a guide rail, a backrest and a jack;
(3) Preparing a tunneling tool: preparing a trolley, a spade, a pickaxe and a shovel tool;
(4) And (3) jacking construction: the construction of jacking equipment comprises the construction of a pipe jacking machine, wherein a cutter head in the pipe jacking machine rotates to crush soil and stones; manually entering the steps of digging in the jacking pipe, unearthing, processing the interface of the sleeve, ventilating in the pipe, receiving the jacking pipe and fixedly sealing;
in the step (4), the cutter head comprises a disk body, a plurality of supporting plates and cutting tools are arranged on the periphery of the disk body at intervals, the supporting plates are hinged to the disk body, a plurality of connecting plates capable of sliding in the radial direction of the disk body are arranged on one end face of the disk body, a second gear and a screw rod are arranged in the center of the disk body, the screw rod is coaxially connected with the second gear, a nut and a connecting ring are arranged on the screw rod, a plurality of connecting rods are arranged on the connecting ring, and the free ends of the connecting rods are respectively connected with the connecting plates.
2. A construction method according to claim 1, wherein the construction method comprises the following steps: the construction of the jacking equipment in the step (4) comprises the following substeps:
1) Installing jacking iron, firmly extruding, starting an oil pump, pushing a jack in, extending a piston out of a working stroke, and pushing a jacking pipe forward;
2) Stopping the oil pump, opening the control valve, returning oil by the jack, and retracting the piston;
3) Adding top iron, and repeating the operations until a next section of pipe body needs to be installed;
4) And (4) dismounting the top iron, lowering the pipe, sleeving a water-stopping rubber ring at the steel pipe interface, starting an oil pump to connect the pipe body interface into the steel bell mouth, and continuing jacking after the water-stopping rubber ring completely enters the steel bell mouth.
3. A construction method for penetrating a matrix of a cavity according to claim 2, wherein: and (4) wetting the pipe body.
4. A construction method for penetrating a matrix of a cavity according to claim 3, wherein: and (4) reserving the front end 2 sections of pipe joints, temporarily not clearing, and clearing after the pipe joints are communicated.
5. A construction method for penetrating a matrix of a cavity according to claim 4, wherein: and (4) waterproof sealing is carried out on the special sealing ring for the sleeve pipe orifice.
6. The construction method according to claim 5, wherein the construction method comprises the following steps: and (4) before and during the manual excavation, an axial flow blower is adopted to supply air through the ventilation pipe.
7. The construction method according to claim 6, wherein the construction method comprises the following steps: the step (4) also comprises a monitoring process of gas and toxic and harmful gases.
8. A method according to claim 7, wherein the method comprises the steps of: and (4) measuring and correcting.
9. A construction method for penetrating a matrix of a cavity according to claim 8, wherein: in the measuring and deviation rectifying process, when one jacking pipe is installed in the jacking process, the direction and the axial direction of the jacking pipe are retested, and the handheld infrared distance measuring instruments are respectively attached to the top, the middle and the lower parts of the pipe wall to detect whether the distance between infrared rays and the pipe wall is consistent or not, and whether the direction of the previous jacking pipe and the direction of the next jacking pipe are on the same line or not.
10. A construction method for penetrating a matrix of a cavity according to claim 9, wherein: in the process of fixing and sealing, after the top pipe is cleaned, concrete is adopted to carry out mould closing pouring to wrap the top pipe, and the wrapping length is 1.5 sections of the top pipe; and simultaneously, the gap between the plugging wall and the jacking pipe is plugged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011159113.8A CN112267889B (en) | 2020-10-26 | 2020-10-26 | Construction method for penetrating through filling material of molten cavity |
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| CN202011159113.8A CN112267889B (en) | 2020-10-26 | 2020-10-26 | Construction method for penetrating through filling material of molten cavity |
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| CN112267889B true CN112267889B (en) | 2023-02-28 |
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| CN113187539B (en) * | 2021-03-17 | 2024-04-02 | 中铁二十三局集团第六工程有限公司 | Splitting and transporting device for TBM and using method thereof |
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| CN101701523B (en) * | 2009-11-23 | 2012-09-05 | 郭壮 | Grating type trenchless prop excavating equipment and trenchless prop method tunnel excavating process |
| CN103195158B (en) * | 2013-04-03 | 2014-12-10 | 济南城建集团有限公司 | Municipal drainage pipeline slurry balance pipe-jacking construction method |
| CN103292035B (en) * | 2013-05-24 | 2015-06-10 | 中国华冶科工集团有限公司 | Construction method of underground pipe jacking |
| CN107035917A (en) * | 2017-05-23 | 2017-08-11 | 罗永强 | Jacking construction structure |
| CN108506015A (en) * | 2018-06-07 | 2018-09-07 | 北京住总集团有限责任公司 | Excavate the construction method of artificial push pipe and application Pipe Jacking in a kind of Large Diameter Pipeline point storehouse |
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