EP0106745A2 - Verfahren und Vorrichtung zum Anbringen einer Schutzschicht auf einem Boden unter Wasser - Google Patents

Verfahren und Vorrichtung zum Anbringen einer Schutzschicht auf einem Boden unter Wasser Download PDF

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Publication number
EP0106745A2
EP0106745A2 EP83401876A EP83401876A EP0106745A2 EP 0106745 A2 EP0106745 A2 EP 0106745A2 EP 83401876 A EP83401876 A EP 83401876A EP 83401876 A EP83401876 A EP 83401876A EP 0106745 A2 EP0106745 A2 EP 0106745A2
Authority
EP
European Patent Office
Prior art keywords
installation
fixed
prefabricated
winch
gabions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83401876A
Other languages
English (en)
French (fr)
Other versions
EP0106745A3 (de
Inventor
Marcel Verrey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CITRA-FRANCE
Original Assignee
CITRA-FRANCE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8216171A external-priority patent/FR2533626A1/fr
Priority claimed from FR8217482A external-priority patent/FR2534568A1/fr
Application filed by CITRA-FRANCE filed Critical CITRA-FRANCE
Publication of EP0106745A2 publication Critical patent/EP0106745A2/de
Publication of EP0106745A3 publication Critical patent/EP0106745A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0208—Gabions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/121—Devices for applying linings on banks or the water bottom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines

Definitions

  • the subject of the invention is a method and an installation installation on a submerged bottom of a protective mat formed of a large number of gabions placed side by side. It is sometimes necessary, to stop excessive erosion and, in general, to protect the bottom of a water reserve, a river or the sea, to put on it a large number of gabions joined together to form a protective mat.
  • a gabion is made up of a flexible envelope in the shape of a basket, whether or not it has a bottom and is filled with stones or other solid material.
  • the envelope made for example of an oier or a mesh of metal or plastic wire can, because of its flexibility, be folded to reduce its size.
  • we deploy the envelope we put it in place and we fill it with pieces.
  • gabions If the installation of gabions is easy in the open air, it is not the same when the ground to be protected is constituted by the bottom of a reserve of water submerged possibly under a significant height of water. In this case, the gabions must be placed by a diver and this operation is long and sometimes dangerous.
  • the subject of the invention is a new process, an installation for implementing the latter, which allows for a gentle installation of the gabions from the surface of the water, with great precision and without the intervention of divers.
  • the prefabricated element is hung on a lifting beam provided with a plurality of hooking members in equal number to the element anchoring members and positioned so as to engage on the latter when the lifter descends, the latter being suspended for this purpose from a removal device comprising at least one winch mounted on a movable carriage along a raised launching bridge extending from side to side of the prefabrication area and extended on the other side above the water, the lifting beam is then attached to the prefabricated element by means of the removal device which is then brought above the water by moving the carriage on the gangway and placing the entire lifting beam and the prefabricated element on a barge placed below the extension of the gangway then moving the barge thus loaded to bring it below d 'a setting device
  • the flexible envelopes of the gabions Preferably, to make a carpet element, first deploy the flexible envelopes of the gabions and attach them in sufficient numbers to form an element of desired shape on the prefabrication area, connect the envelopes and the 'the anchors are placed in the desired locations and then the whole of the gabion envelopes constituting the element are filled with stones.
  • the installation for implementing the method comprises a prefabrication area for the carpet elements, an elevated launching platform extending on one side above the prefabrication area and extended on the other side beyond the bank and above the water over a length greater than that of a carpet element and over which a removal device can move longitudinally comprising at least one winch mounted on a carriage and to which a lifter consisting of a frame of polygonal shape corresponding to that of the elements of the mat and on which are mounted a plurality of hooking members distributed in an identical manner to that of the anchoring members of each element so as to engage on them ci at the descent of the lifter, the latter being provided with a device for controlling the simultaneous unhooking of the fastening members, a pontoon supporting a setting apparatus comprising at least one hoist for suspending the lifter and provided with m means of positioning relative to the bottom, and a transport barge, of dimension larger than that of an element and provided with means of displacement between a position of loading by the removal device, placed below the extension of the
  • the support pontoon comprises two parallel floats spaced apart by a distance greater than the width of the transport barge and the setting device comprises a raised gantry extending between the two floats and in the center of which the winch is placed. lifting beam.
  • each anchoring member consists of a pin formed of a rigid frame comprising a hooking loop in the shape of an inverted U extending vertically above the upper level of the corresponding gabion and the branches of which are bent horizontally in the lower part of the gabion, each pin being placed in the open envelope, provisionally fixed and then blocked by the stones after they have been put in place.
  • the horizontal branches of the pins are placed and fixed on the bottom of the gabions.
  • the removal device and the setting device each comprise two lifting winches for lifting the spreader at two points spaced from one another, the winches of the removal device are movable in synchronism along the bridge and the unwinding of the two winches of the setting device can be controlled separately and at different speeds.
  • the invention also covers a handling spreader specially developed for the operation of gabions.
  • the lifter comprises two superimposed flat chassis, a suspension chassis provided on its upper face with fixing means on the lifting device and a locking chassis slidingly mounted on the suspension chassis by rectilinear translation along in a direction perpendicular to the planes of the pins and a means for controlling the sliding of the locking frame on the suspension frame;
  • each hooking member is constituted by a lock comprising a movable part forming a bolt extending horizontally on one side of the plane of the corresponding pin, perpendicular thereto and capable of passing into the pin by axial sliding and s 'Engage in an orifice formed in a fixed part forming a keeper and consisting of at least one plate disposed on the other side of the plane of the pin in a plane p a - parallel to it;
  • the movable parts forming the bolts and the fixed parts forming the keepers of said locks are fixed on the lower faces res, respectively, of the locking frame and the suspension frame and the sliding thereof takes place over the distance required in
  • FIG. 1 represents only part of a prefabricated assembly made up of joined gabions.
  • Each gabion such as 10 consists of a mesh envelope 11 provided with a bottom 110 and forming a basket of rectangular section; the assembly is generally made in the factory.
  • the sides a and b of the gabion can have a fairly long length, for example of several meters and, in this case, the interior of the gabion is advantageously divided into several boxes by vertical partitions 12.
  • the screened envelope 11 is delivered folded on site. It is then unfolded on a prefabrication area, to take its rectangular and contiguous shape, along its side walls rales, to other gabions 101, 102, 103 which have only been shown partially in the figure.
  • the gabions are then connected to each other for example by means of flexible links 13 which pass through the mesh walls joined so as to sew them together.
  • the anchoring members which, in the example shown, each consist of a pin 14 consisting of an iron such as a concrete frame, bent so as to form a U inverted whose top is placed above the upper level of the envelopes 11 while, at its base, the two branches 15 are bent and extend horizontally in the lower part of the gabion, normally along the bottom 110 of this one.
  • Each gabion 10 is thus provided with one or more pins, the number and distribution of which depend on their mechanical strength and on the total weight reached after filling with the stones.
  • the pins placed in the adjoining gabions can be arranged in parallel planes and their horizontal branches welded end to end.
  • each prefabricated element will include a large number of anchor points distributed over its entire surface and constituted by the inverted U-shaped loops spaced from each other and formed at regular intervals on the parallel bars.
  • the pins After placing the pins at the desired locations in the gabions and possible welding, they are fixed on the bottom 110 of the gabions 10 to temporarily hold them in place and the assembly of stones is filled by proceeding in successive parallel rows. By their weight and by blocking them, the stones ensure the final fixing of the anchor pins 14 in the gabions.
  • a prefabricated element generally of rectangular shape, which can cover, for example, an area of approximately 100 m2, is thus formed by joining a determined number of gabions.
  • the launching platform 2 shown in FIGS. 2 and 3 consists of two parallel beams 20 mounted on pillars 21 so as to extend above the prefabrication area A, at a sufficient height, of the order of several meters, to allow the passage of the boom of a shovel 22 which, after the establishment of the envelopes of the gabions and their connection by the links 13, ensures the filling thereof by parallel rows perpendicular to the direction of the beams 20.
  • a removal device consisting, in the example shown, of two carriages 23 each carrying a winch 24.
  • the cables of the two winches can be detachably hooked on two suspension points 45 d 'a lifting beam 4 which is placed above the prefabricated element 1.
  • the lifting beam 4 comprises a rigid rectangular frame supporting a plurality of fastening members 32 which are distributed in an identical manner to that of the anchoring members 14 of the prefabricated element so as to come to engage on these at the descent of the lifting beam.
  • the fastening members 8 are locked during movement and especially the fitting of the prefabricated element and, moreover, the lifting beam 4 must be provided with a device making it possible to control simultaneously and instantly the release of all the attachment members 8.
  • hooking members are put in place and engage automatically on the pins without having to hang them one after the other.
  • Figures 6 to 11 show by way of example a spreader specially developed for this purpose.
  • FIGS. 7 and 8 there is shown schematically the gabion 1 filled with stones and provided with pins 10 which are arranged, in the longitudinal direction in parallel rows such as Al, A 2 ... (FIG. 3) and aligned, in the transverse direction, along parallel planes P l, P 2 ... ( Figure 2) so as to form a grid evenly distributed over the entire surface of the load 1.
  • the lifter according to the invention shown in top view on FIG. 6 and in section in FIGS. 7 and 8 consists of two superimposed chassis slidingly mounted one on the other, a suspension chassis 4 and a locking chassis 3.
  • the suspension frame is constituted by a plurality of parallel longitudinal beams 4 fixed on the underside of two profiles 40 forming transverse spacers perpendicular to the beams 4 and connected together by crossed bracing tie rods, so that the assembly forms a rigid frame.
  • the longitudinal beams 4 are parallel and their axes regularly spaced by the distance (e) between the parallel rows of pins 14 so that, when the lifter descends, each longitudinal beam 4 comes to be placed above a row d 'pins such as A 1 or A 2.
  • chassis 4 can be suspended from a lifting device, not shown, for example by means of two beams 44 each provided at its center with a member 45 for hanging from the lifting device and carrying at their ends two boxes. 46 which cover the spacers 40 and in which are placed suspension pins 47 passing through orifices formed in the core of the profiles 40 so that the suspension is articulated.
  • each longitudinal beam 4 consists of two parallel sections 44 between which is left a width gap (i).
  • the locking frame 3 comprises a plurality of parallel bars 31 which are each placed in the gap (i) between the two parts 4, 4 'of a beam 4 and further, as shown in the view of detail of FIG. 4, the longitudinal bars 31 are advantageously held by guide studs 43 fixed on the opposite faces of the sections 4, 4 ′ so that the bars 31 can slide longitudinally in the axis of the longitudinal beams 4.
  • the bars 31 are fixed at their two ends on two cross members 32 which are guided horizontally in retaining brackets 42 formed by angles fixed at the ends of the longitudinal beams 4 above and below the cross members 32.
  • Each l on - geron 41 carries at its ends two cylinders 6 and 7 whose bodies are fixed on a plate forming the head of the beam 41 and the rods 61, 71 of which are each articulated on a yoke 33 fixed on the corresponding cross member 32.
  • the jacks 6 and 7 are single acting and are controlled alternately so that by supplying either the jacks 6 or the jacks 7, the sliding of the locking frame 3 can be controlled by rectilinear translation in one direction or the other. parallel to the direction of the beams 4, the longitudinal bars 31 being, during this movement, guided by the studs 43 of the beams 4.
  • the lifter is provided with a plurality of latches 8 distributed on its lower face so as to each correspond to a pin 10.
  • Each lock 8 comprises a fixed part 81 forming a keeper and a movable part 82 forming a bolt.
  • the fixed parts 81 are constituted by pairs of angles separated so as to form a yoke and fixed on the underside of the longitudinal beams 4 while being aligned along the planes Pl, P2, ... of pins 14. In this way, the yokes 81 form rows spaced apart by a distance d corresponding to the spacing of the planes Pl P2 of the pins 14.
  • each bolt 82 of the locks are fixed along the longitudinal bars 31 of the locking frame 3 and are spaced from each other by the same distance d, each bolt 82 consisting of a horizontal pin fixed by a foot 83 to the longitudinal bar 31 and extending cantilevered parallel to the bar 31 and dans.la direction of the yoke 81.
  • the latter is provided on its sides with two aligned orifices 84 (FIG. 10) in which the pin 82 can be threaded when the locking frame 3 is slid.
  • the jacks 6 are extended and the jacks 60 are retracted, in the position shown in FIGS. 6 and 7, the latches thus being in the open position.
  • a transport barge 26 has been brought below the extension 25 of the gangway 2.
  • This barge normally of rectangular shape, has dimensions greater than those of an element and can pass between the pillars 21 of the gangway.
  • the two carriages of the removal device 23 therefore arrive in position 231 above the loading location and, thanks to the two winches 24, the element 1 is deposited on the barge 26. We can then unhook the two winches 24, the lifter 4 remaining attached to element 1.
  • one or two tugs 27 can then take over the barge 4 and drive it to the installation location.
  • a pontoon 5 is placed consisting of two floats 51 spaced from one another and which can be connected to one another only on one side so as to give it a U-shape as seen in FIG. 4.
  • the pontoon 5 is connected to fixed points, for example four dead bodies 52 by cables each winding on a winch 53 so that by acting judiciously on the winches 53 it is possible to position the pontoon 5 exactly. desired location.
  • fixed points for example four dead bodies 52 by cables each winding on a winch 53 so that by acting judiciously on the winches 53 it is possible to position the pontoon 5 exactly. desired location.
  • theodolite 54 making it possible to precisely measure the azimuth and the distance of a target 55 placed on the pontoon and at the same time to check alignment of this one.
  • the two floats 51 of the pontoon are spaced apart by a distance greater than the width of the barge 26 so that the latter, brought by the tug 27, can come to be placed between the two floats 51 below an apparatus of pose 50 consisting, as seen in FIG. 5, of two winches 56 spaced from one another and mounted on a horizontal crosspiece 57 resting on two gantries 58 whose feet are placed on the two floats 51 and which span the space between them so that the two winches 56 can hang on the two suspension points 33 provided on the lifter 3.
  • the two winches 56 of the setting device can be controlled separately and, in addition, at least one of the two winches 56 can be mounted on a carriage movable along the crosspiece 57 so to be able to vary the spacing of the two winches slightly.
  • the prefabricated element 1 When the bottom of the water reserve is substantially horizontal, the prefabricated element 1 is lowered to a small distance, for example, 10 cm from the bottom and, at this time, the alignment and positioning are precisely adjusted of the pontoon so that the element 1 suspended from the winch 56 is well placed perpendicular to the desired location. After grounding, the simultaneous detachment of all the hooks 32 of the lifter is ordered, the prefabricated element thus being placed exactly at the desired location.
  • the pins 82 of the locks being discharged, the sliding of the locking frame 3 is controlled in the direction of release by means of the jacks 6, so that the bolts 82 all release the pins 10 simultaneously.
  • the upper face of the bolts 82 can be inclined, as shown in FIG. 6.
  • the prefabricated element could be constituted in another way and supplemented for example by a plastic or nonwoven envelope placed on the prefabrication area before the installation of the gabions and fixed on the bottoms thereof so as to cover the underside of the element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Revetment (AREA)
EP83401876A 1982-09-24 1983-09-26 Verfahren und Vorrichtung zum Anbringen einer Schutzschicht auf einem Boden unter Wasser Withdrawn EP0106745A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8216171 1982-09-24
FR8216171A FR2533626A1 (fr) 1982-09-24 1982-09-24 Procede et installation de pose d'un tapis de protection sur un fond immerge
FR8217482 1982-10-19
FR8217482A FR2534568A1 (fr) 1982-10-19 1982-10-19 Palonnier de soulevement d'une charge de grande surface

Publications (2)

Publication Number Publication Date
EP0106745A2 true EP0106745A2 (de) 1984-04-25
EP0106745A3 EP0106745A3 (de) 1984-07-25

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639380A1 (fr) * 1988-11-21 1990-05-25 Lefoll Pierre Procede pour la construction en basses eaux d'une poutre de fondation d'un perre recouvrant un ouvrage tel qu'une berge, une jetee ou autre et poutre de fondation ainsi obtenue
FR2716688A1 (fr) * 1994-02-28 1995-09-01 Spie Citra Procédé de pose de gabions multicellulaires? de grande surface et moyens de mise en Óoeuvre.
FR2903712A1 (fr) * 2006-07-17 2008-01-18 France Maccaferri Soc Par Acti Element de construction pour ouvrage de genie civil
WO2009112840A1 (en) * 2008-03-11 2009-09-17 Terram Limited Cellular structures
EP1881114A3 (de) * 2006-07-17 2010-01-13 France Maccaferri Verfahren zur Herstellung von einzelnen Vollbausteinen zur Erstellung eines Bauwerks
WO2013064399A1 (de) * 2011-11-05 2013-05-10 Sellhorn Ingenieurgesellschaft mbH Vorrichtung und verfahren zur herstellung einer kolkschutzvorrichtung
DE202013011453U1 (de) 2013-12-23 2014-02-25 Wolfgang Deutschle Gabione mit Hubösen
US10267010B2 (en) 2011-07-21 2019-04-23 Fiberweb Holdings, Ltd. Confinement structures
CN115045235A (zh) * 2022-07-29 2022-09-13 安徽省交通航务工程有限公司 一种防汛缺口封堵支护用船基平台
CN115158558A (zh) * 2022-07-29 2022-10-11 安徽省交通航务工程有限公司 一种格网石笼组装投放一体化船基集成设备
CN119913857A (zh) * 2025-04-03 2025-05-02 山西省水利建筑工程局集团有限公司 一种格宾石笼网施工辅助装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL92511C (de) * 1900-01-01
GB191000300A (en) * 1910-01-05 1910-04-28 Robert Rudolf Lodewyk D Muralt Improvements in and relating to Systems of Shore Protection for Preventing Erosion and the like.
FR665048A (fr) * 1927-12-01 1929-09-13 Hollandsche Mij Tot Het Maken Procédé pour la construction des caissons et autres corps flottants en béton
US2669479A (en) * 1950-05-02 1954-02-16 Frank I Louckes Mechanism for manipulating flexible revetment mats
US3180671A (en) * 1962-05-08 1965-04-27 Einar H Bachmann Reinforcing mat handling means
IE36003B1 (en) * 1970-04-10 1976-07-21 Maccaferri Spa Off Improvements relating to gabions
FR2177488B1 (de) * 1972-03-27 1974-02-15 Foucault Pierre
DE2614009A1 (de) * 1976-04-01 1977-10-06 Holstein & Kappert Maschf Umsetzvorrichtung zum ergreifen von stueckguetern
IT1162046B (it) * 1978-06-29 1987-03-18 Poli Giovanni Pamimentatrice subacquea con blocchi in cemento vibrato

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370888A1 (de) * 1988-11-21 1990-05-30 Societe Etude Promotion Architecture "S.E.P.R.A." Verfahren für den Bau eines Fundamentbalkens bei niedrigem Wasser für ein Deckwerk, das ein Bauwerk, wie ein Ufer, einen Damm oder dergleichen bedeckt und Fundamentbalken, der so erhalten wurde
FR2639380A1 (fr) * 1988-11-21 1990-05-25 Lefoll Pierre Procede pour la construction en basses eaux d'une poutre de fondation d'un perre recouvrant un ouvrage tel qu'une berge, une jetee ou autre et poutre de fondation ainsi obtenue
FR2716688A1 (fr) * 1994-02-28 1995-09-01 Spie Citra Procédé de pose de gabions multicellulaires? de grande surface et moyens de mise en Óoeuvre.
FR2903712A1 (fr) * 2006-07-17 2008-01-18 France Maccaferri Soc Par Acti Element de construction pour ouvrage de genie civil
EP1881114A3 (de) * 2006-07-17 2010-01-13 France Maccaferri Verfahren zur Herstellung von einzelnen Vollbausteinen zur Erstellung eines Bauwerks
US11549229B2 (en) 2008-03-11 2023-01-10 Terram Limited Cellular structures
WO2009112840A1 (en) * 2008-03-11 2009-09-17 Terram Limited Cellular structures
US12215471B2 (en) 2008-03-11 2025-02-04 Terram Limited Cellular structures
US10094085B2 (en) 2008-03-11 2018-10-09 Terram Limited Cellular structures
US10267010B2 (en) 2011-07-21 2019-04-23 Fiberweb Holdings, Ltd. Confinement structures
US10781569B2 (en) 2011-07-21 2020-09-22 Fiberweb Holdings Limited Confinement structures—DefenCell plastic gabion system
WO2013064399A1 (de) * 2011-11-05 2013-05-10 Sellhorn Ingenieurgesellschaft mbH Vorrichtung und verfahren zur herstellung einer kolkschutzvorrichtung
EP2894275A2 (de) 2013-12-23 2015-07-15 Wolfgang Deutschle Gabione mit Hubösen
DE202013011453U1 (de) 2013-12-23 2014-02-25 Wolfgang Deutschle Gabione mit Hubösen
CN115158558A (zh) * 2022-07-29 2022-10-11 安徽省交通航务工程有限公司 一种格网石笼组装投放一体化船基集成设备
CN115045235A (zh) * 2022-07-29 2022-09-13 安徽省交通航务工程有限公司 一种防汛缺口封堵支护用船基平台
CN115158558B (zh) * 2022-07-29 2024-02-23 安徽建工交通航务集团有限公司 一种格网石笼组装投放一体化船基集成设备
CN115045235B (zh) * 2022-07-29 2024-05-14 安徽建工交通航务集团有限公司 一种防汛缺口封堵支护用船基平台
CN119913857A (zh) * 2025-04-03 2025-05-02 山西省水利建筑工程局集团有限公司 一种格宾石笼网施工辅助装置

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