CN1260503C - Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof - Google Patents
Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof Download PDFInfo
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- CN1260503C CN1260503C CN 200410012786 CN200410012786A CN1260503C CN 1260503 C CN1260503 C CN 1260503C CN 200410012786 CN200410012786 CN 200410012786 CN 200410012786 A CN200410012786 A CN 200410012786A CN 1260503 C CN1260503 C CN 1260503C
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Abstract
The present invention relates to a relay jacking construction technology of glass fiber reinforced plastic sand-inclusion jacking pipes and a relay device thereof. In the relay device, widening pressure equalizing steel rings are arranged at the ends of a front glass fiber reinforced plastic sand-inclusion jacking pipe and a back glass fiber reinforced plastic sand-inclusion jacking pipe in a relay steel sleeve barrel, the inward stretching edges of the widening pressure equalizing steel rings are designed with stiffening ribbed plates, and the stiffening ribbed plates are fixedly connected with the inner walls of the front glass fiber reinforced plastic sand-inclusion jacking pipe and the back glass fiber reinforced plastic sand-inclusion jacking pipe so as to ensure that relay jacks equally distributed between the front widening pressure equalizing steel ring and the back widening pressure equalizing steel ring can normally work. The relay jacking construction technology of glass fiber reinforced plastic sand-inclusion jacking pipes is characterized in that in the relay jacking process of the glass fiber reinforced plastic sand-inclusion jacking pipes by the relay device, the latter relay jack starts to jack after the front jacking pipe is in the position, an oil cylinder of the relay jack is loosened after the jacking process is completed, the rear jack can continuously jack, and a similar process is circularly carried out until the front jacking pipe is completely in the position; rear relay assemblies are disassembled, a mounting hole on the relay steel sleeve barrel is sealed, and the back jacking pipe is continuously jacked by a main jack or the rear relay jacks so as to fill a gap occupied by the original relay.
Description
Technical field
The present invention relates to the pipe-jacking technology in the underground pipeline engineering, refer to a kind of glass fiber reinforced steel push pipe with sand relay well relay jacking construction technology and relay well device thereof particularly.
Background technique
Jacking construction is as a kind of method of construction of non-excavating underground pipe line, under ground piping is laid in highway crossing, railway, house, river etc. very easily, little to traffic impact, earth excavation is few, mechanization degree is high, be considered to a kind of modern under ground piping laying method, increasing underground engineering adopts this method of construction.But in traditional concrete pipe and steel pipe jacking pipe construction process, also also have many problem demanding prompt solutions, important have soft foundation countersunk head, a correction difficulty etc., the corrosion resistance of these two kinds of tubing is poor in addition, working life is shorter, and this is also restricting further developing of pipe jacking construction technique.
In order to address the above problem, in present jacking construction, gradually adopted glass fiber reinforced plastic sand-inclusion pipeline to replace traditional concrete pipe and steel pipe.Because glass fiber reinforced plastic sand-inclusion pipeline smooth in appearance and densification, inner wall roughness are little, from heavy and light, corrosion-resistant, compare with traditional tubing that the caliber that has under little, the equal flow of required top power is little, correction easily, advantage such as countersunk head, long service life not, therefore since it begins to use, be subjected to the extensive concern of engineering circle in pipe-jacking project.
Though glass fiber reinforced steel push pipe with sand has the advantages that outer wall is smooth, top power is little, the maximum jacking distance in once single hole is greater than steel pipe and concrete pipe push pipe.But sometimes because engineering-environment is limit or because other ask for something and consideration, a required jacking is apart from very big, thereby required top power is also very big.Can bring the problem of following several respects like this:
One, main jack can't provide required top power at all.The top power that main jack can provide is certain, and after top power reaches certain limit value, the top power that main jack provided can't continue to increase, and jacking construction can't continue so, and therefore whole engineering may scrap.
Its two, back parados insufficient strength and destroying.Back parados is to support jack, and the counter-force effect of bearing jack also has the certain intensity limit when design, and top power can not surpass a certain numerical value, otherwise can destroy, and construction also can't go on.
Its three, the bearing capacity that has surpassed tubing causes tubing to destroy.No matter what material all has only certain bearing capacity, glass reinforced plastic sand pipe is no exception, and after top power had surpassed this bearing capacity, tubing will destroy.
In order to reduce top power, whole jacking length can be divided into plurality of sections, at each section jack and corresponding apparatus thereof are preset in pipe interior, take the mode of each jack relay jacking to carry out, after one section jack top put in place when the front, the jack that the back is a section began jacking, after the top of back puts in place, the jacking forward again of front so repeatedly, is finally finished whole jack-in process.Because jack only needs jacking one section of place separately in the middle of each, so jack does not need too big top power in the middle of each, and main jack also only needs last one section of jacking, and required top power will reduce greatly.The method of this segmentation relay jacking is called relay well relay jacking, and the middle placement relevant device that jack adopted just is called relay well.
Concrete ceiling coil once adopted relay well, but can't directly it be applied to glass fiber reinforced steel push pipe with sand, and main cause is that concrete pipe belongs to thick walled tube, and its wall thickness can reach 1/10th of diameter usually, and jack can act directly on it.But glass fiber reinforced steel push pipe with sand is a thin walled tube, and its wall thickness is less than 1/3rd of concrete pipe, if jack acts directly on it, top power can't apply fully, and can cause unbalance stress, just glass reinforced plastic sand pipe is destroyed under less top power.
The relay well of concrete ceiling coil is after jacking is finished in addition, and the mode that mainly adopts concrete to fill seals relay well, and this also is worthless for glass fiber reinforced steel push pipe with sand.If still with the concrete sealing, if thin, promptly suitable with the glass fiber reinforced steel push pipe with sand tube wall, then construction may be compared difficulty, other some mechanical properties and sealing also all can be more weaker than fiberglass sand inclusion pipeline section; If thick, then can cause the caliber sudden change, current are influenced; If adopt glass fibre reinforced plastics to seal, then cost is too high again.Therefore be necessary its thorough improvement.
Summary of the invention
Purpose of the present invention will provide a kind of glass fiber reinforced steel push pipe with sand relay well relay jacking construction technology and relay well device thereof exactly, it can overcome existing defective in traditional jacking construction effectively and be adapted to the glass fiber reinforced steel push pipe with sand construction, increases a jacking distance of glass fiber reinforced steel push pipe with sand greatly.
For realizing this purpose, the glass fiber reinforced steel push pipe with sand relay well relay jacking construction technology that the present invention is designed comprises following operation:
1) O type rubber seal is sleeved in the o-ring groove of preceding root glass fiber reinforced steel push pipe with sand afterbody outer wall, the billet vertical fixing is connected on the leading portion inwall of relay well steel bushing, then the leading portion of relay well steel bushing closely is inserted in the afterbody of preceding root glass fiber reinforced steel push pipe with sand, and the front of billet is closely contacted with the tail end of preceding root glass fiber reinforced steel push pipe with sand;
2) will widen equal compressed steel ring and be close to the back that is placed in the billet in the relay well steel bushing, and will widen the floor of stretching in the equal compressed steel ring on the edge of putting more energy into be close to be fixed on before on the root glass fiber reinforced steel push pipe with sand afterbody inwall, preceding glass fiber reinforced steel push pipe with sand hung in carry out jacking in the working pit then;
3) after preceding glass fiber reinforced steel push pipe with sand jacking, uniform several relay well jack cylinders on the coupled circumference of widening equal compressed steel ring, and with fixing device each relay well jack cylinder is installed on the inwall of relay well steel bushing;
4) O type rubber seal is sleeved in the o-ring groove of back root glass fiber reinforced steel push pipe with sand stem outer wall, to widen equal compressed steel ring and be close to the head end that is placed in back root glass fiber reinforced steel push pipe with sand, and will widen the floor of stretching in the equal compressed steel ring on the edge of putting more energy into and be close to and be fixed on the root glass fiber reinforced steel push pipe with sand stem inwall of back, then back root glass fiber reinforced steel push pipe with sand is hung in working pit, and it is injected the back segment of relay well steel bushing, the equal compressed steel ring of widening of its head end is closely contacted with the relay well jack, carry out the relay jacking, so repeat;
5) after the jacking of current root glass fiber reinforced steel push pipe with sand puts in place, the relay well jack that is positioned at thereafter begins jacking, throttle valve with this relay well jack cylinder after jacking is finished unclamps, so that more the relay well jack of back continues jacking, the rest may be inferred, and circulation is carried out, and puts in place until the preceding complete jacking of glass fiber reinforced steel push pipe with sand;
6) after the preceding complete jacking of glass fiber reinforced steel push pipe with sand puts in place, with thereafter relay well jack cylinder, forward and backwardly widen equal compressed steel ring and disassemble successively, and the jack cylinder on the relay well steel bushing is installed nut bore seal;
7) utilize the relay well jack of main jack or back that back root glass fiber reinforced steel push pipe with sand is continued jacking, to fill the space that former relay well is occupied.
For realizing the custom-designed relay well device of above-mentioned construction process, comprise the relay well steel bushing, the stem of the afterbody of root glass fiber reinforced steel push pipe with sand and back root glass fiber reinforced steel push pipe with sand before the front and rear sections of relay well steel bushing is socketed in respectively, its front and rear sections belled position is respectively equipped with O type rubber seal.Tail end at preceding glass fiber reinforced steel push pipe with sand is glued with billet, and billet vertically is connected on the inwall of relay well steel bushing.Be respectively equipped with at the head end of the back side of billet and back root glass fiber reinforced steel push pipe with sand and widen equal compressed steel ring, widen equal compressed steel ring in stretch the edge and be provided with the floor of putting more energy into, the forward and backward floor of widening on the equal compressed steel ring of putting more energy into be close to respectively be fixed on forward and backward glass fiber reinforced steel push pipe with sand, inwall on.Be evenly equipped with the flexible jack cylinder of several driving relay well jack forward and backward widening between the equal compressed steel ring along annular direction, jack cylinder is installed on the stage casing inwall of relay well steel bushing by fixing device.
The invention has the advantages that: the equal compressed steel ring of widening designed in the construction relies on the floor of stretching in it on edge of putting more energy into, be close to the inwall of glass fiber reinforced steel push pipe with sand and fixedly connected, can guarantee on the one hand that the relay well jack is supported on fully and widen on the equal compressed steel ring, the top power of relay well jack is given full play of, increased the power transmission area by widening equal compressed steel ring on the other hand, overcome the thin weakness of glass fiber reinforced steel push pipe with sand wall effectively, make stressed being tending towards of glass fiber reinforced steel push pipe with sand evenly simultaneously can make more reasonable stress by the floor of putting more energy into that is fixed on the fiberglass sand inclusion inner tube wall.The billet on the relay well steel bushing inwall of being vertically fixed on that is adopted in the construction remains with the rear end of preceding root glass fiber reinforced steel push pipe with sand in jack-in process and contacts, guaranteed the jacking synchronously all the time of relay well steel bushing and preceding root glass fiber reinforced steel push pipe with sand, and widening on relay well steel bushing and the back root glass fiber reinforced steel push pipe with sand maintains certain clearance between the equal compressed steel ring, thereby relay well can freely stretch under the effect of jack.The construction later stage can make the end face of forward and backward glass fiber reinforced steel push pipe with sand keep closely contact by jack after disassembling the associated component of relaying, thereby has avoided the trouble of filling behind the assembly that takes out the relay well position, has significantly saved construction cost.This shows that construction process of the present invention and device have successfully solved the difficult problem of thin-walled glass steel push pipe with sand relay well relay jacking construction, can significantly improve a jacking distance of glass fiber reinforced steel push pipe with sand.
Description of drawings
Fig. 1 is the glass fiber reinforced steel push pipe with sand relay well apparatus structure schematic representation before the jack jacking;
Fig. 2 is the glass fiber reinforced steel push pipe with sand relay well apparatus structure schematic representation after the jack jacking;
Fig. 3 is the structural representation that the burst assembly type among Fig. 1, Fig. 2 is widened equal compressed steel ring.
Embodiment
Glass fiber reinforced steel push pipe with sand relay well device of the present invention shown in the figure, relay well steel bushing 1 with push pipe before and after connecting, the stem of the afterbody of root glass fiber reinforced steel push pipe with sand 10 and back root glass fiber reinforced steel push pipe with sand 9 before the front and rear sections of relay well steel bushing 1 is socketed in respectively, its front and rear sections belled position is respectively equipped with twice O type rubber seal 8.Because the push pipe correction may make the pipe joint place produce certain drift angle, when the higher hydraulic pressure of underground water level was big, if only adopt general steel collar socket or one rubber ring antiseepage, its effect often was not fine, thereby adopt the secondary seal structure of this pair of O shape, can guarantee anti-seepage effect.Tail end at preceding glass fiber reinforced steel push pipe with sand 10 is glued with a billet 2, and billet 2 is vertically welded on the inwall of relay well steel bushing 1.Be separately installed with at the head end of the back side of billet 2 and back root glass fiber reinforced steel push pipe with sand 9 and widen equal compressed steel ring 3, widen to stretch in the equal compressed steel ring 3 and be welded with the vertical floor 5 of putting more energy on the edge, the forward and backward floor of widening on the equal compressed steel ring 35 of putting more energy into is close on the inwall that is installed in forward and backward glass fiber reinforced steel push pipe with sand 10,9 by fixing bolt 4 respectively.Above-mentioned burst package assembly of widening equal compressed steel ring 3 for ease of dismounting, form a domain by six hollow arc plates by connecting bolt 12, each burst central authorities and joint are provided with the floor 5 of putting more energy into, and after jacking is finished, can easily it be disassembled like this.Be evenly equipped with the jack cylinder 7 that four driving relay well jack 11 stretch forward and backward widening between the equal compressed steel ring 3 along annular direction, jack cylinder 7 is installed on the stage casing inwall of relay well steel bushing 1 by two fixing devices 6.The length inserted and billet 2 to the length between relay well steel bushing 1 rear end of above-mentioned back root glass fiber reinforced steel push pipe with sand 9 are complementary, and that is to say the back segment socket of relay well steel bushing 1 and first section insertion portion of back root glass fiber reinforced steel push pipe with sand 9 have been done the lengthening design simultaneously.Like this, in jacking construction, no matter the relay well jack is stretched over any length, on the one hand relay well steel bushing 1 is freely put in, and its pair O type rubber seal 8 is retained in the relay well steel bushing 1 all the time, behind dismounting relay well assembly, can make the end face of forward and backward glass fiber reinforced steel push pipe with sand 10,9 keep fitting tightly on the other hand, avoid the trouble of filling behind the relay well assembly, thereby reduce cost taking out.
When adopting said apparatus to make glass fiber reinforced steel push pipe with sand relay well relay jacking construction of the present invention, undertaken by following operation:
1) two pass O type rubber seal 8 is sleeved in the o-ring groove of preceding root glass fiber reinforced steel push pipe with sand 10 afterbody outer walls, billet 2 is vertically welded on the leading portion inwall of relay well steel bushing 1, then the leading portion of relay well steel bushing 1 closely is inserted in the afterbody of preceding root glass fiber reinforced steel push pipe with sand 10, and the front of billet 2 is closely contacted with the tail end of preceding root glass fiber reinforced steel push pipe with sand 10;
2) will widen equal compressed steel ring 3 and be close to the back that is placed in the billet 2 in the relay well steel bushing 1, and will be welded on widen the floor 5 usefulness fixing bolts of stretching in the equal compressed steel ring 3 on the edge 4 of putting more energy into be close to be installed in before on the root glass fiber reinforced steel push pipe with sand 10 afterbody inwalls, preceding glass fiber reinforced steel push pipe with sand 10 hung in carry out jacking in the working pit then;
3) after preceding glass fiber reinforced steel push pipe with sand 10 jacking, uniform four relay well jack cylinders 7 on the coupled annulus of widening equal compressed steel ring 3, and with two fixing devices 6 each relay well jack cylinder 7 is installed on the inwall of relay well steel bushing 1;
4) two pass O type rubber seal 8 is sleeved in the o-ring groove of back root glass fiber reinforced steel push pipe with sand 9 stem outer walls, to widen equal compressed steel ring 3 and be close to the head end that is placed in back root glass fiber reinforced steel push pipe with sand 9, and will be welded on and widen the floor 5 usefulness fixing bolts of stretching in the equal compressed steel ring 3 on the edge 4 of putting more energy into and be close to and be installed on the root glass fiber reinforced steel push pipe with sand 9 stem inwalls of back, then back root glass fiber reinforced steel push pipe with sand 9 is hung in working pit, and it is injected the back segment of relay well steel bushing 1, the equal compressed steel ring 3 of widening of its head end is closely contacted with relay well jack 11, carry out the relay jacking, so repeat;
5) after 10 jackings of current root glass fiber reinforced steel push pipe with sand put in place, be positioned at relay well jack 11 beginning jackings thereafter, throttle valve with this relay well jack cylinder after jacking is finished unclamps, so that more the relay well jack of back continues jacking, the rest may be inferred, and circulation is carried out, and puts in place until the preceding complete jacking of glass fiber reinforced steel push pipe with sand;
6) after preceding glass fiber reinforced steel push pipe with sand 10 complete jackings put in place, with thereafter relay well jack cylinder 7, forward and backwardly widen equal compressed steel ring 3 and disassemble successively, and the jack cylinder on the relay well steel bushing 1 is installed nut bore seal;
7) utilize the relay well jack of main jack or back that back root glass fiber reinforced steel push pipe with sand 9 is continued jacking, to fill the space that former relay well is occupied.So repeat, all at last relay wells are removed entirely, and are filled by the glass reinforced plastic sand pipe of back, thereby do not need to adopt additive method that relay well is handled again.
Claims (6)
1. glass fiber reinforced steel push pipe with sand relay well relay jacking construction technology comprises following operation:
1) O type rubber seal is sleeved in the o-ring groove of preceding root glass fiber reinforced steel push pipe with sand afterbody outer wall, the billet vertical fixing is connected on the leading portion inwall of relay well steel bushing, then the leading portion of relay well steel bushing closely is inserted in the afterbody of preceding root glass fiber reinforced steel push pipe with sand, and the front of billet is closely contacted with the tail end of preceding root glass fiber reinforced steel push pipe with sand;
2) will widen equal compressed steel ring and be close to the back that is placed in the billet in the relay well steel bushing, and will widen the floor of stretching in the equal compressed steel ring on the edge of putting more energy into be close to be fixed on before on the root glass fiber reinforced steel push pipe with sand afterbody inwall, preceding glass fiber reinforced steel push pipe with sand hung in carry out jacking in the working pit then;
3) after preceding glass fiber reinforced steel push pipe with sand jacking, uniform several relay well jack cylinders on the coupled circumference of widening equal compressed steel ring, and with fixing device each relay well jack cylinder is installed on the inwall of relay well steel bushing;
4) O type rubber seal is sleeved in the o-ring groove of back root glass fiber reinforced steel push pipe with sand stem outer wall, to widen equal compressed steel ring and be close to the head end that is placed in back root glass fiber reinforced steel push pipe with sand, and will widen the floor of stretching in the equal compressed steel ring on the edge of putting more energy into and be close to and be fixed on the root glass fiber reinforced steel push pipe with sand stem inwall of back, then back root glass fiber reinforced steel push pipe with sand is hung in working pit, and it is injected the back segment of relay well steel bushing, the equal compressed steel ring of widening of its head end is closely contacted with the relay well jack, carry out the relay jacking, so repeat;
5) after the jacking of current root glass fiber reinforced steel push pipe with sand puts in place, the relay well jack that is positioned at thereafter begins jacking, throttle valve with this relay well jack cylinder after jacking is finished unclamps, so that more the relay well jack of back continues jacking, the rest may be inferred, and circulation is carried out, and puts in place until the preceding complete jacking of glass fiber reinforced steel push pipe with sand;
6) after the preceding complete jacking of glass fiber reinforced steel push pipe with sand puts in place, with thereafter relay well jack cylinder, forward and backwardly widen equal compressed steel ring and disassemble successively, and the jack cylinder on the relay well steel bushing is installed nut bore seal;
7) utilize the relay well jack of main jack or back that back root glass fiber reinforced steel push pipe with sand is continued jacking, to fill the space that former relay well is occupied.
2. one kind is adopted the described construction process of claim 1 and custom-designed relay well device, comprise relay well steel bushing (1), it is characterized in that: the stem of the afterbody of root glass fiber reinforced steel push pipe with sand (10) and back root glass fiber reinforced steel push pipe with sand (9) before the front and rear sections of relay well steel bushing (1) is socketed in respectively, its front and rear sections belled position is respectively equipped with O type rubber seal (8); Tail end at preceding glass fiber reinforced steel push pipe with sand (10) is glued with billet (2), and billet (2) vertically is connected on the inwall of relay well steel bushing (1); Be respectively equipped with at the head end of the back side of billet (2) and back root glass fiber reinforced steel push pipe with sand (9) and widen equal compressed steel ring (3), widen equal compressed steel ring (3) in stretch the edge and be provided with the floor of putting more energy into (5), the forward and backward floor of widening on the equal compressed steel ring (3) of putting more energy into (5) is close to respectively on the inwall that is fixed on forward and backward glass fiber reinforced steel push pipe with sand (10,9); Be evenly equipped with the flexible jack cylinder (7) of several driving relay well jack (11) forward and backward widening between the equal compressed steel ring (3) along annular direction, jack cylinder (7) is installed on the stage casing inwall of relay well steel bushing (1) by fixing device (6).
3. relay well device according to claim 2 is characterized in that: the said equal compressed steel ring (3) of widening adopts easy-to-dismount burst package assembly.
4. according to claim 2 or 3 described relay well devices, it is characterized in that: the length inserted of said back root glass fiber reinforced steel push pipe with sand (9) and billet (2) are to the equal in length between relay well steel bushing (1) rear end, and two O type rubber seal (8) of back root glass fiber reinforced steel push pipe with sand (9) front end are positioned at relay well steel bushing (1) all the time in the process that relay well jack (11) stretches.
5. according to claim 2 or 3 described relay well devices, it is characterized in that: the stem of the afterbody of root glass fiber reinforced steel push pipe with sand (10) and back root glass fiber reinforced steel push pipe with sand (9) is respectively equipped with twice O type rubber seal (8) before said.
6. relay well device according to claim 4 is characterized in that: the stem of the afterbody of root glass fiber reinforced steel push pipe with sand (10) and back root glass fiber reinforced steel push pipe with sand (9) is respectively equipped with twice O type rubber seal (8) before said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012786 CN1260503C (en) | 2004-02-27 | 2004-02-27 | Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012786 CN1260503C (en) | 2004-02-27 | 2004-02-27 | Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560391A CN1560391A (en) | 2005-01-05 |
| CN1260503C true CN1260503C (en) | 2006-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012786 Expired - Fee Related CN1260503C (en) | 2004-02-27 | 2004-02-27 | Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof |
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| CN (1) | CN1260503C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072359B (en) * | 2009-11-24 | 2014-12-10 | 上海市政工程设计研究总院 | Curved-jacked steel pipe section and jacking method |
| CN102277898B (en) * | 2011-04-28 | 2013-08-07 | 温州市金誉建设监理有限公司 | Drain pipe jacking construction method |
| CN103822016A (en) * | 2013-07-02 | 2014-05-28 | 天津市天联滨海复合材料有限公司 | Glass-reinforced plastic pipe jacking construction method applied during pipe body breaking in jacking |
| CN103437772B (en) * | 2013-08-06 | 2015-05-13 | 吴元修 | Pipe-jacking construction method of underground passage and tunnel structure |
| CN103899840B (en) * | 2014-04-15 | 2016-02-03 | 中国十九冶集团有限公司 | The method of construction that a kind of groundwater supply glass reinforced plastic sand pipe and fastener for connection are changed |
| CN104565612B (en) * | 2014-12-30 | 2016-08-24 | 九峰海洋生态建设集团有限公司 | A kind of connection sleeve pipe for glass fiber reinforced steel push pipe with sand Yu relay well |
| CN108374931B (en) * | 2018-02-11 | 2019-11-08 | 重庆建工住宅建设有限公司 | A kind of push pipe is hampered quick supporting method of getting rid of poverty |
| CN111503366A (en) * | 2020-04-26 | 2020-08-07 | 五冶集团上海有限公司 | Curve pipe jacking intermediate and construction method |
| CN113774961B (en) * | 2021-06-01 | 2022-09-16 | 中国二十冶集团有限公司 | Waterproof method for underground gallery type structure jacking relay room |
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2004
- 2004-02-27 CN CN 200410012786 patent/CN1260503C/en not_active Expired - Fee Related
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Granted publication date: 20060621 Termination date: 20130227 |