CN205038028U - Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed - Google Patents
Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed Download PDFInfo
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- CN205038028U CN205038028U CN201520739248.XU CN201520739248U CN205038028U CN 205038028 U CN205038028 U CN 205038028U CN 201520739248 U CN201520739248 U CN 201520739248U CN 205038028 U CN205038028 U CN 205038028U
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Abstract
The utility model relates to a seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed, include that the last concrete examination mould section of jurisdiction that relative laminating set up reaches concrete examination mould section of jurisdiction down, go up concrete examination mould section of jurisdiction and set up corresponding filleting slot with the binding face department that lower concrete tried the mould section of jurisdiction, and inside the packing has the jointing material, concrete examination mould section of jurisdiction was pre -buried respectively under upward concrete examination mould section of jurisdiction reached has last basin to reach basin down, it sets up with lower basin relatively to go up the basin, constitute central water cavity jointly, be equipped with the water filling channel with central water cavity intercommunication down in the concrete examination mould section of jurisdiction, upward be equipped with the exhalant canal with central water cavity intercommunication in the concrete examination mould section of jurisdiction. Compared with the prior art, the utility model discloses can accurate test seam under the difference volume of opening, dislocation volume condition, bolt hole seal ring, section of jurisdiction filleting and hand hole plugging material's the impervious ability of the limit to the waterproof ability of appraising the seam multichannel line of defence for the system fully provides the reference.
Description
Technical field
The utility model belongs to Tunnel Engineering technical field, relates to a kind of seam waterproof performance test apparatus of shield tunnel multiple defence line waterstop sealing.
Background technology
In recent years, China builds successively or plans and plans to build a collection of large-scale more river submerged tunnel over strait.Shield method is fast with its construction safety, driving speed, adapt to bad ground and to advantages such as surrounding environment disturbance are little, become the main flow construction method of current Large Underwater Tunnel Engineering.For the big cross section shield tunnel under water of more than diameter 10m, usually the adverse condition such as section is large, the degree of depth is dark, hydraulic pressure is high, distance are faced due to tunnel, its pipe-plate lining trends towards thicker, seam construction is more complicated, for ensureing tunnel " watertight " during one's term of military service, needing, multiple defence line is set and carries out waterproof.So-called multiple defence line, mainly comprises seam grooved seal, interior filleting, the O-ring seal of bolt hole and section of jurisdiction hand hole blocking etc.
Make a general survey of domestic and international shield tunnel seam waterproof correlation test device, the seam watertightness test device researched and developed as German underground transportation facilities research association (STUVA), the published utility model patent of watertightness test device or Tongji University---elastic sealing gasket of shield tunnel " yi word pattern " watertightness verifying attachment (CN201010145789) of Japanese Waseda University, the tested object of above-mentioned prior art is single seam elastic sealing gasket/hydro-expansive rubber sealing cushion, does not consider that seam and other waterproof assist defence line.In addition, a large amount of shield tunnel construction case shows, after pipe sheet assembling completes, often with bolt hole percolating water phenomenon, therefore needs that abutment joint is indulged, the bolt hole of hoop finned surface processes.And conventional disposal route, be the bolt aperture of rib side, chamber is processed into taper, and arrange the packing washer that material matches, by indulging, hoop finned surface bolt tightens compacting at Cheng Huanhou, to reach sealing object.
At present, according to the daily walkaround inspection runing shield tunnel (not taking section of jurisdiction hand hole blocking) under water, find that hand hole place, part section of jurisdiction also exists wet stain, shows that bolt hole is also potential penetrating passage except circumferential weld or longitudinal joint infiltration.For the water tunnel that single shell lining shield method is built, for reducing the coefficient of roughness of inner-walls of duct, reducing the loss of flood peak, needing to carry out hand hole blocking process to section of jurisdiction, and both at home and abroad temporarily without the test method of the impermeability of evaluation hand hole blocking material.
Shield tunnel is often as vcehicular tunnel or railway tunnel under water for major diameter, and tunnel internal is installed on the multiple electromechanical equipments such as communication, illumination, ventilation, fire-fighting, requires extremely harsh, need carry out caulking sealing to vault to the antiseepage of vault.And both at home and abroad temporarily without the test method of the impermeability of evaluation caulking material.
Because existing shield tunnel seam waterproof spininess is to the subway tunnel of minor diameter, shallow earthing, low hydraulic pressure, it generally adopts the water proof structure pattern of single track elastic sealing gasket, there is no the seam waterproof performance test apparatus can evaluated and adopt multiple defence line waterstop sealing both at home and abroad, so need the limit anti-permeability performance that a kind of test of development arranges quantitative test shield tunnel seam bolt hole, section of jurisdiction filleting and hand hole blocking material badly.
Utility model content
The purpose of this utility model is exactly provide a kind of seam waterproof performance test apparatus of shield tunnel multiple defence line waterstop sealing to overcome defect that above-mentioned prior art exists, can the limit anti-permeability performance of quantitative test shield tunnel seam bolt hole, section of jurisdiction filleting and hand hole blocking material rapidly and accurately by this test unit.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of seam waterproof performance test apparatus of shield tunnel multiple defence line waterstop sealing, this test unit comprises the upper concrete test die section of jurisdiction of laminating setting relatively and lower concrete test die section of jurisdiction, described upper concrete test die section of jurisdiction offers corresponding filleting groove with the binding face place of lower concrete test die section of jurisdiction, this filleting groove is close-shaped, and inside is filled with caulking material, described upper concrete test die section of jurisdiction and lower concrete test die section of jurisdiction are embedded with upper flume and lower flume respectively, within described upper flume and lower flume are positioned at filleting groove, and be oppositely arranged, common formation center water cavity, the waterflood path be communicated with center water cavity is provided with in described lower concrete test die section of jurisdiction, this waterflood path is communicated with external water pressure machine, the exhalant canal be communicated with center water cavity is provided with in described upper concrete test die section of jurisdiction, and the water pressure gauge described upper concrete test die section of jurisdiction is also provided with for measuring center water cavity pressure, in working order, the top of described upper concrete test die section of jurisdiction and the left and right sides, below and the left and right sides of described lower concrete test die section of jurisdiction are provided with lifting jack respectively.
Described lower concrete test die section of jurisdiction is also provided with hand hole, fills out and be provided with hand hole blocking material in this hand hole.
The first bolt hole, the second bolt hole is also offered respectively in described upper concrete test die section of jurisdiction and lower concrete test die section of jurisdiction, and the first described bolt hole and the second bolt hole cooperatively interact and jointly form track bolt hole, be provided with track bolt in this track bolt hole, described upper concrete test die section of jurisdiction is fixedly connected with lower concrete test die section of jurisdiction by track bolt.
Described track bolt is the one in straight bolt, curved bolt or oblique bolt.
Further, described track bolt is oblique bolt.
The bottom of described track bolt is also provided with packing washer.
Described filleting groove is the one in ring-shaped groove or shaped as frame groove.
In the utility model, the size of described filleting groove is consistent with the size of actual reinforced concrete segment filleting groove, described caulking material is consistent with actual reinforced concrete segment caulking material, the size of described upper bolt hole and lower bolt hole and construct all with the size in actual reinforced concrete segment track bolt hole and construct consistent, the dimensions of described packing washer is consistent with the bolt hole O-ring seal of actual reinforced concrete segment, described hand hole blocking material and adhesion process thereof are all consistent with actual reinforced concrete segment hand hole blocking material.
The utility model shield tunnel seam bolt hole, section of jurisdiction filleting and hand hole blocking water resistance test device, upper, on lower two concrete test die sections of jurisdiction, offer one close-shaped filleting groove separately, caulking material is filled in filleting groove, dependence caulking material forms a closed space, and upper, the pre-buried upper flume of difference in lower two concrete test die sections of jurisdiction, lower flume, when practical application, upper concrete test die section of jurisdiction connects water pressure gauge, the seepage pressure be used for when measuring seam bolt hole/section of jurisdiction caulking material/hand hole blocking material generation percolating water, lower concrete test die section of jurisdiction connects water pressure engine feedwater, the first bolt hole is offered in upper concrete test die section of jurisdiction, the second bolt hole and hand hole is offered in lower concrete test die section of jurisdiction, first bolt hole and the second bolt hole cooperatively interact and jointly form track bolt hole, for erection joint bolt, and hand hole is mainly used in the hand hole blocking carrying out the later stage.
The utility model test unit in use, spacing by the constraint of vertical and horizontal lifting jack, wherein, vertical lifting jack controls the joint open of upper concrete test die section of jurisdiction and lower concrete test die segment joint, horizontal lifting jack controls the relative dislocation amount of upper concrete test die section of jurisdiction and lower concrete test die segment joint, the seepage pressure recorded like this is exactly the water pressure resistance force value of segment joint bolt hole/section of jurisdiction filleting/hand hole blocking material, the different joint open of segment joint can be measured by accurate analog, under different magnitude of misalignment operating mode, bolt hole, the limit impermeability of section of jurisdiction filleting and hand hole blocking material.
Compared with prior art, the utility model has following characteristics:
1) annular caulking material is filled in the reinforced concrete filleting groove measure-alike with actual section of jurisdiction, can the contact condition of real simulation concrete filleting groove and caulking material, makes test findings more reliable;
2) by laterally and the control of vertical lifting jack spacing, accurately realize the different magnitude of misalignment of seam and joint open combines;
3) by different plan designs, for the shield tunnel of different purposes, simulate the following percolating water operating mode that may exist: the 1. non-shutoff of hand hole-be applicable to subway tunnel: current puncture caulking material, the percolating water of section of jurisdiction intrados occurs; 2. the non-shutoff of hand hole-be applicable to subway tunnel: current puncture bolt hole packing washer, the percolating water of generator tube strip terminal bolt hole; , there is the percolating water of section of jurisdiction intrados in 3. hand hole blocking-be applicable to water tunnel/vcehicular tunnel/railway tunnel: current wear caulking material; , there is the percolating water of hand hole near section of jurisdiction intrados in 4. hand hole blocking-be applicable to water tunnel/vcehicular tunnel/railway tunnel: current first puncture bolt hole packing washer, then penetrate hand hole blocking material;
4) when accurately can measure different joint open, different magnitude of misalignment operating mode, the limit anti-permeability performance of segment joint bolt hole, section of jurisdiction filleting and hand hole blocking material, thus evaluate seam waterproof ability all sidedly for system reference is provided;
5) cancel sealing gasket groove, set up filleting groove, evaluate the watertightness of section of jurisdiction caulking material;
6) set up track bolt hole, after simulated flow punctures the packing washer as seam Shou Dao defence line, infiltrate section of jurisdiction hand hole process through bolt hole packing washer, thus more truly reflect big cross section shield tunnel lining structure seam infiltration under water condition;
7) whether consider hand hole blocking, different tests operating mode can be designed, can the waterproof ability of accurate simulation different purposes shield tunnel seam.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of embodiment 1;
Fig. 2 is embodiment 1 backsight structural representation;
Fig. 3 is the left TV structure schematic diagram of embodiment 1;
Fig. 4 is embodiment 1 plan structure schematic diagram;
Fig. 5 is that embodiment 1 looks up structural representation;
Description of symbols in figure:
1-upper concrete test die section of jurisdiction, 2-lower concrete test die section of jurisdiction, 3-caulking material, 4-upper flume, 5-lower flume, 6-hand hole, 7-track bolt, 8-packing washer, 9-exhalant canal, 10-waterflood path.
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.
Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
Embodiment 1:
As Figure 1-5, a kind of seam waterproof performance test apparatus of shield tunnel multiple defence line waterstop sealing, this test unit comprises the upper concrete test die section of jurisdiction 1 of laminating setting relatively and lower concrete test die section of jurisdiction 2, upper concrete test die section of jurisdiction 1 offers corresponding filleting groove with the binding face place of lower concrete test die section of jurisdiction 2, this filleting groove is close-shaped, and inside is filled with caulking material 3, upper concrete test die section of jurisdiction 1 and lower concrete test die section of jurisdiction 2 are embedded with upper flume 4 and lower water 5 groove respectively, within upper flume 4 and lower flume 5 are positioned at filleting groove, and be oppositely arranged, common formation center water cavity, the waterflood path 10 be communicated with center water cavity is provided with in lower concrete test die section of jurisdiction 2, this waterflood path 10 is communicated with external water pressure machine, the exhalant canal 9 be communicated with center water cavity is provided with in upper concrete test die section of jurisdiction 1, and the water pressure gauge upper concrete test die section of jurisdiction 1 is also provided with for measuring center water cavity pressure, in working order, the top of upper concrete test die section of jurisdiction 1 and the left and right sides, below and the left and right sides of lower concrete test die section of jurisdiction 2 are provided with lifting jack respectively.
Wherein, lower concrete test die section of jurisdiction 2 is also provided with hand hole 6, fills out and be provided with hand hole blocking material in this hand hole 6.The first bolt hole, the second bolt hole is also offered respectively in upper concrete test die section of jurisdiction 1 and lower concrete test die section of jurisdiction 2, and the first bolt hole and the second bolt hole cooperatively interact and jointly form track bolt hole, be provided with track bolt 7 in this track bolt hole, upper concrete test die section of jurisdiction 1 is fixed together with lower concrete test die section of jurisdiction 2 by this track bolt 7.The bottom of track bolt 7 is also provided with packing washer 8.
In the present embodiment, track bolt 7 is oblique bolt, and filleting groove is ring-shaped groove.The size of filleting groove is consistent with the size of actual reinforced concrete segment filleting groove, caulking material 3 is consistent with actual reinforced concrete segment caulking material, the size of the first bolt hole and the second bolt hole and construct all with the size in actual reinforced concrete segment track bolt hole and construct consistent, the dimensions of packing washer 8 is consistent with the bolt hole O-ring seal of actual reinforced concrete segment, and hand hole blocking material and adhesion process thereof are all consistent with actual reinforced concrete segment hand hole blocking material.
When reality uses, first synchronously loaded by horizontal lifting jack, concrete test die section of jurisdiction 1 is made to produce a changing of the relative positions amount set with the seam crossing of lower concrete test die section of jurisdiction 2, then synchronously loaded by vertical lifting jack, a known controlled load is acted on to upper concrete test die section of jurisdiction 1, the seam between concrete test die section of jurisdiction 1 and lower concrete test die section of jurisdiction 2 is made to produce a deflection set, injected the water of band pressure to center water cavity inside by the waterflood path 10 bottom lower flume 5, the seam waterproof performance under setting changing of the relative positions amount and seam joint open can be recorded.
According to the shield tunnel of different purposes, whether carry out hand hole blocking by Practical Project and be divided into following two kinds of example approach:
One, hand hole blocking operating mode is not considered
After vertical and horizontal lifting jack constraint die trial arrives the seam joint open and magnitude of misalignment preset, adopt water pressure engine to be pressurizeed by the waterflood path 10 bottom lower flume 5, following two kinds of infiltration states may be there are:
One is that current directly puncture caulking material 3, can observe water stain, namely think that caulking material 3 lost efficacy prior to bolt hole packing washer 8 by naked eyes near annular groove, and record water pressure gauge reading now, as the limit water pressure resistance force value of caulking material 3;
Two is that current ooze out bolt hole packing washer 8, can observe water stain on hand hole 6 surface, namely think that bolt hole packing washer 8 lost efficacy prior to caulking material 3 by naked eyes, and record water pressure gauge reading now, as the limit water pressure resistance force value of bolt hole packing washer 8.
Two, hand hole blocking operating mode is considered
After vertical and horizontal lifting jack constraint die trial arrives the seam joint open and magnitude of misalignment preset, hand hole blocking material is laid to hand hole 6, and carry out maintenance according to designing requirement, after shaping, the waterflood path 10 adopting water pressure engine to pass through bottom lower flume 5 again pressurizes, and may there are following two kinds of infiltration states:
One is that current directly puncture caulking material 3, can observe water stain near annular groove by naked eyes, namely think that caulking material 3 to superpose with hand hole 6 shutoff prior to bolt hole packing washer 8 to lose efficacy, record water pressure gauge reading now, as the limit water pressure resistance force value of caulking material 3;
Two is that current successively puncture bolt hole packing washer 8 and hand hole blocking material, can observe water stain at hand hole blocking material surface by naked eyes, namely think that bolt hole packing washer 8 superposes with hand hole 6 shutoff to lose efficacy prior to caulking material 3, record water pressure gauge reading now, as the limit water pressure resistance force value that bolt hole packing washer 8 superposes with hand hole 6 shutoff.
Embodiment 2:
In the present embodiment, track bolt 7 is straight bolt, and filleting groove is shaped as frame groove.All the other are with embodiment 1.
Embodiment 3:
In the present embodiment, track bolt 7 is curved bolt.All the other are with embodiment 1.
In sum, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (7)
1. the seam waterproof performance test apparatus of a shield tunnel multiple defence line waterstop sealing, it is characterized in that, this test unit comprises upper concrete test die section of jurisdiction (1) and the lower concrete test die section of jurisdiction (2) of laminating setting relatively, described upper concrete test die section of jurisdiction (1) offers corresponding filleting groove with the binding face place of lower concrete test die section of jurisdiction (2), this filleting groove is close-shaped, and inside is filled with caulking material (3), described upper concrete test die section of jurisdiction (1) and lower concrete test die section of jurisdiction (2) are embedded with upper flume (4) and lower flume (5) respectively, within described upper flume (4) and lower flume (5) are positioned at filleting groove, and be oppositely arranged, common formation center water cavity, the waterflood path (10) be communicated with center water cavity is provided with in described lower concrete test die section of jurisdiction (2), this waterflood path (10) is communicated with external water pressure machine, the exhalant canal (9) be communicated with center water cavity is provided with in described upper concrete test die section of jurisdiction (1), and the water pressure gauge described upper concrete test die section of jurisdiction (1) is also provided with for measuring center water cavity pressure, in working order, the top of described upper concrete test die section of jurisdiction (1) and the left and right sides, below and the left and right sides of described lower concrete test die section of jurisdiction (2) are provided with lifting jack respectively.
2. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 1, it is characterized in that, described lower concrete test die section of jurisdiction (2) is also provided with hand hole (6), fills out and be provided with hand hole blocking material in this hand hole (6).
3. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 1, it is characterized in that, also the first bolt hole is offered respectively in described upper concrete test die section of jurisdiction (1) and lower concrete test die section of jurisdiction (2), second bolt hole, and the first described bolt hole and the second bolt hole cooperatively interact and jointly form track bolt hole, track bolt (7) is provided with in this track bolt hole, described upper concrete test die section of jurisdiction (1) is fixedly connected with lower concrete test die section of jurisdiction (2) by track bolt (7).
4. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 3, is characterized in that, described track bolt (7) is straight bolt, curved bolt or the one tiltedly in bolt.
5. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 4, is characterized in that, described track bolt (7) is oblique bolt.
6. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 3,4 or 5, is characterized in that, the bottom of described track bolt (7) is also provided with packing washer (8).
7. the seam waterproof performance test apparatus of a kind of shield tunnel multiple defence line waterstop sealing according to claim 1, is characterized in that, described filleting groove is the one in ring-shaped groove or shaped as frame groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520739248.XU CN205038028U (en) | 2015-09-23 | 2015-09-23 | Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed |
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| CN201520739248.XU CN205038028U (en) | 2015-09-23 | 2015-09-23 | Seam waterproof performance test device that shield tunnel multichannel line of defence stagnant water is sealed |
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| CN107036763A (en) * | 2017-03-09 | 2017-08-11 | 同济大学 | The test method of shield duct piece joint percolating water |
| CN107101788A (en) * | 2017-04-26 | 2017-08-29 | 同济大学 | Shield tunnel lining segment T words stitch two seals pad waterproof test device and method |
| CN107796745A (en) * | 2017-11-24 | 2018-03-13 | 招商局重庆交通科研设计院有限公司 | A kind of tunnel-liner infiltration hydraulic pressure water determination experiment device and method |
| CN108362444A (en) * | 2018-04-27 | 2018-08-03 | 西南石油大学 | A kind of shield tunnel gasket water resistance test device and application method |
| CN108487917A (en) * | 2018-04-25 | 2018-09-04 | 中铁隧道局集团有限公司 | A kind of tunnel duct piece hand hole blocking device and method |
| CN109001094A (en) * | 2018-05-03 | 2018-12-14 | 天津大学 | A kind of shield tunnel infiltration rate prediction method |
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| CN115015083A (en) * | 2022-06-17 | 2022-09-06 | 中交第二公路勘察设计研究院有限公司 | Device and method for testing waterproof performance of double-channel sealing gasket of shield tunnel segment joint |
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| CN107036763A (en) * | 2017-03-09 | 2017-08-11 | 同济大学 | The test method of shield duct piece joint percolating water |
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| CN107796745A (en) * | 2017-11-24 | 2018-03-13 | 招商局重庆交通科研设计院有限公司 | A kind of tunnel-liner infiltration hydraulic pressure water determination experiment device and method |
| CN107796745B (en) * | 2017-11-24 | 2023-12-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining seepage water pressure and water volume measurement experiment device and method |
| CN108487917A (en) * | 2018-04-25 | 2018-09-04 | 中铁隧道局集团有限公司 | A kind of tunnel duct piece hand hole blocking device and method |
| CN108362444B (en) * | 2018-04-27 | 2023-09-19 | 西南石油大学 | Waterproof performance test device for shield tunnel sealing gasket and use method |
| CN108362444A (en) * | 2018-04-27 | 2018-08-03 | 西南石油大学 | A kind of shield tunnel gasket water resistance test device and application method |
| CN109001094A (en) * | 2018-05-03 | 2018-12-14 | 天津大学 | A kind of shield tunnel infiltration rate prediction method |
| CN109000899A (en) * | 2018-05-03 | 2018-12-14 | 天津大学 | Open measuring device in duct pieces of shield tunnel gap |
| CN109616004A (en) * | 2018-12-28 | 2019-04-12 | 中交上海三航科学研究院有限公司 | Submerged tunnel structural model and preparation method thereof and test method |
| CN109616004B (en) * | 2018-12-28 | 2024-04-05 | 中交上海三航科学研究院有限公司 | Underwater tunnel structure model, manufacturing method and testing method thereof |
| CN110057508B (en) * | 2019-06-05 | 2020-02-07 | 深圳市一通检测技术有限公司 | Material contact ratio detector based on high accuracy |
| CN110057508A (en) * | 2019-06-05 | 2019-07-26 | 衢州代宇商务咨询有限公司 | One kind being based on high-precision material adaptation detector |
| CN112461673A (en) * | 2020-11-25 | 2021-03-09 | 南水北调中线干线工程建设管理局河南分局 | Simulation test system and method for waterproof sealing material under hydraulic pressure working condition |
| CN115015083A (en) * | 2022-06-17 | 2022-09-06 | 中交第二公路勘察设计研究院有限公司 | Device and method for testing waterproof performance of double-channel sealing gasket of shield tunnel segment joint |
| CN115452344A (en) * | 2022-09-14 | 2022-12-09 | 广东省水利水电科学研究院 | Hand hole plugging quality detection structure and detection method |
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