STORAGE SITE UNDER AN EMBANKMENT COVERED BY A RACK AND WATERPROOFING STRUCTURE

Abstract

A storage or disposal site (1) comprises a structure (2) intended for the storage or disposal of radioactive waste, located at least partially under an embankment (8) having contour lines and slope lines, and a cover structure (10) covering at least partially the embankment (8). The structure comprises, on the one hand, a framework (12), preferably made of ultra-high-performance fiber-reinforced concrete, comprising meridional beams (18) forming rows (20) of meridional beams (18) positioned along the slope lines of the embankment (8); and on the other hand, monolithic panels (14) made of ultra-high-performance fiber-reinforced concrete, forming meridional rows (62) of monolithic panels (14), each of the meridional rows (62) of monolithic panels (14) being supported by two adjacent rows (20) of meridional beams (18) from among the rows (20) of meridian beams (18). (Shorthand figure: 3)

Description

Title of the invention: STORAGE OR WAREHOUSE SITE UNDER AN EMBANKMENT COVERED WITH A COVERING AND WATERPROOFING STRUCTURE TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to a storage site comprising a structure located at least partially under an embankment, and in particular a storage or disposal site for products with a very long lifespan, for example for nuclear waste. STATE OF THE PRIOR ART

[0002] The 2017 information report on nuclear safety and radiation protection of the Manche storage center (https: / / manche.andra.fr / sites / manche / files / 2018-07 / andra_rapport-2017_csm_web.pdf ) describes the storage site, which includes underground storage structures for the storage of radioactive waste, and an embankment constituting a multi-layer cover covering its underground structures. This multi-layer cover is made up of successive layers of coarse materials, sand, with an intermediate membrane and drains interposed, all covered with topsoil. This embankment is subject to rain and evapotranspiration and the monitoring and control of its hydraulic behavior over very long periods, exceeding a century, is complex. Description of the invention

[0003] The invention aims to remedy the drawbacks of the state of the art and to propose a storage or warehousing site, protected over very long periods against bad weather.

[0004] For this purpose, a storage or disposal site is proposed comprising a structure intended for the storage or disposal of radioactive waste, located at least partially under an embankment having contour lines and slope lines perpendicular to the contour lines, and a covering and waterproofing structure at least partially covering the embankment, the structure comprising on the one hand a framework comprising meridian beams forming rows of meridian beams positioned along the slope lines of the embankment, and on the other hand monolithic panels made of ultra-high performance fiber-reinforced concrete forming meridian rows of monolithic panels, each of the meridian rows of monolithic panels being directly placed on and supported by two adjacent rows of meridian beams among the rows of meridian beams.

[0005] Unlike traditional concrete, which is not perfectly waterproof and has limited mechanical characteristics, so-called ultra-high-performance fiber-reinforced concretes (known as BFUHP or BFUP) include fiber fillers, in particular metal, polymer, glass and / or carbon fibers, and have many advantageous characteristics, including a compressive strength exceeding 110 MPa for organic fibers and 150 MPa for metal fibers, and a smooth surface condition promoting water flow. These ultra-high-performance fiber-reinforced concretes also have quite exceptional resistance over time, which gives them a very long service life. These concretes are characterized in particular in the standard NF-P 18-470 - Ultra High Performance Fiber-Reinforced Concretes - Specification, performance, production and compliance (2016).The fiber-reinforced concrete selected preferably has a compressive strength greater than 150 MPa. The fiber-reinforced concrete preferably contains metal fibers. The frame is preferably also made of ultra-high-performance fiber-reinforced concrete, possibly also with metal fibers. The entire structure is then made of ultra-high-performance fiber-reinforced concrete, so that its constituent elements all have a comparable theoretical service life.

[0006] According to one embodiment, each of the monolithic panels has a lower face and fixing studs projecting from the lower face, at least two of the studs bearing by gravity facially against a bearing face of a meridian beam of a first of the two adjacent rows of meridian beams and laterally against two stops formed on the meridian beam of the first of the two adjacent rows of meridian beams, and at least one of the studs bearing by gravity facially against the bearing face of a meridian beam of a second of the two adjacent rows of meridian beams and laterally against a stop formed on the meridian beam of the second of the two adjacent rows of meridian beams. It is important to note here that, insofar as the monolithic panels are made entirely of UHPFRC and the studs are an integral part of the panels, the studs are also made of UHPFRC.

[0007] Because it minimizes the interfaces between the frame and the monolithic panels and does not lock all the degrees of freedom at these interfaces, the structure does not oppose differential thermal expansions and minimizes the internal stresses of the materials, which limits their aging.

[0008] According to one embodiment, the pads and the stops have conjugate shapes engaged in each other so as to ensure locking of each of the monolithic panels relative to the meridian beams of the adjacent rows of meridian beams in an upward direction perpendicular to the lower face. The structure is thus resistant to extreme weather events. ceptional, such as tornadoes.

[0009] To minimize the effects of temperature fluctuations on the roof, the pads are free to slide on the stops in a direction parallel to the level lines while keeping the mating shapes engaged with each other. This freedom of movement further allows the structure to withstand seismic events. Similarly, the pads are free to slide on the stops in an upward direction parallel to the slope lines while keeping the mating shapes engaged with each other.

[0010] Preferably, each of the monolithic panels comprises three studs and only three, which is sufficient to ensure a stable position for the panels, and makes it possible to minimize the hyperstatic nature of the interface, and therefore the internal stresses in the monolithic panels.

[0011] According to one embodiment, each of the monolithic panels of a row any of the meridian rows of monolithic panels, except a lowest monolithic panel of any row, partially overlaps, without contact, a directly adjacent and lower monolithic panel of said any row, and each monolithic panel of any row, except a highest monolithic panel of any row, being partially overlapped, without contact, by a directly adjacent and higher monolithic panel of any row. The overlap thus achieved is preferable to an end-to-end assembly of the monolithic panels, in particular because it allows each monolithic panel to contract or expand without constraints relative to the adjacent panels.

[0012] According to one embodiment, each of the monolithic panels of any row among the meridian rows of monolithic panels, except the lowest monolithic panel of said any row, has an oblique lower side which extends from one of the two adjacent rows of meridian beams to the other at an angle relative to a horizontal plane and forms a projecting nose, which is inserted, without contact, into a flow channel formed along an oblique upper side of the directly adjacent and lower monolithic panel of the any row and extends from one of the two adjacent rows of meridian beams to the other at an angle relative to a horizontal plane, the oblique flow channel and the projecting nose together delimiting a baffle entirely in the open air.

[0013] Similarly, it may be provided that each of the monolithic panels of any row among the meridian rows of monolithic panels, except the highest monolithic panel of any row, has an oblique upper side which extends from one of the two adjacent rows of meridian beams to the other at an angle relative to a horizontal plane and forms a flow channel in which is inserted, without contact, into a nose which is formed along an oblique lower side of the directly adjacent and upper monolithic panel of any row and extends from one of the two adjacent rows of meridian beams to the other at an angle to a horizontal plane, the oblique flow channel and the projecting nose together delimiting a baffle entirely in the open air.

[0014] It is also possible to provide that the oblique flow channel opens into a meridian rainwater flow channel formed by one of the adjacent rows of meridian beams and oriented along a slope line. This organizes the flow and evacuation of water at the level of each panel, which avoids too much accumulation of water at the level of the lower panels of the roof.

[0015] According to one embodiment, at least some of the monolithic panels have two opposite short sides each connecting one end of the upper long side to one end of the lower long side, each of the short sides forming a skirt penetrating without contact into the meridian flow channel of one of the adjacent rows of meridian beams. The skirts thus formed make it possible to position the panels laterally relative to the adjacent meridian beams, while maintaining sufficient differential thermal expansion clearance.

[0016] According to one embodiment, at least two of the meridian rows of monolithic panels are adjacent, one of the adjacent rows of meridian beams supporting one of the two adjacent meridian rows of monolithic panels being a row of meridian beams common to the two adjacent meridian rows of monolithic panels, also constituting one of the adjacent rows of meridian beams supporting the other of the two adjacent meridian rows of monolithic panels. This arrangement makes it possible to use meridian beams common to two contiguous rows of panels. Preferably, the common row of meridian beams forms a flow channel oriented along a slope line and collecting at least part of the rainwater running off the two adjacent meridian rows.

[0017] According to one embodiment, the frame comprises anchoring elements provided with anchoring reliefs, each of the meridian beams being supported by two adjacent anchoring elements among the anchoring elements, engaged with the anchoring reliefs of the adjacent anchoring elements.

[0018] Preferably, at least some of the anchoring elements are a box having a cavity of at least 0.25 m3 filled with ballast. At least some of the anchoring elements are at least partially buried in the slope, and may, if necessary, constitute isolated footings each housed in a shaft excavation made in the slope.

[0019] According to various preferred methods of implementation, • ultra-high performance fiber-reinforced concrete contains metal fibers; and / or • the monolithic panels are flat; and / or • at least some of the monolithic panels have a dimension greater than 4m2; and / or • adjacent rows of meridian beams are located at a maximum distance from each other, measured at at least one measuring point and along the level line passing through the measuring point, which is greater than 4 meters. BRIEF DESCRIPTION OF THE FIGURES

[0020] Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures.

[0021] [Fig.l] [Fig.l] is a sectional view of a storage or warehousing site according to one embodiment of the invention, comprising a covering structure.

[0022] [Fig.2] [Fig.2] is a perspective view of part of a frame of the covering structure of the storage or warehousing site of [Fig.l].

[0023] [Fig.3] [Fig.3] is a perspective view of part of the structure of cover of the storage or warehousing site of [Fig.l], illustrating monolithic panels covering part of the framework illustrated in [Fig.2].

[0024] [Fig.4] [Fig.4] is a top view of part of the roof structure of the storage or warehousing site of [Fig.l].

[0025] [Fig.5] [Fig.5] is a VV section of [Fig.4].

[0026] [Fig.6] [Fig.6] is an isometric view of a monolithic panel of the structure of the covering structure of the storage or warehousing site of [Fig.l].

[0027] [Fig.7] [Fig.7] is a detail VII of [Fig.5].

[0028] [Fig.8] [Fig.8] is a detail VIII of [Fig.5].

[0029] For clarity, identical or similar elements are identified by identical reference signs throughout the figures. DETAILED DESCRIPTION OF AN EMBODIMENT

[0030] In [Fig.l] is illustrated a storage or disposal site 1 comprising a structure 2, more particularly intended for the storage or disposal of radioactive waste, the structure 2 being located at least partially under a mound 3. By storage, we mean here a phase of secure temporary conservation, which however is designed to allow conservation over a long period, which may exceed a century, for example to manage the decrease in harmfulness, in particular the radioactive harmfulness of short- and medium-lived waste, if necessary with a view to subsequent storage. By storage, we mean conservation over a long period, which may exceed three centuries, aiming to contain waste for the time necessary for sufficient reduction of harmfulness, particularly radioactive, for humans and the environment.

[0031] The site 1 illustrated in [Fig.l] results from work to protect the structures 2, which may originally be, for example, at ground level or underground, and which have been covered with a multi-layer covering forming a vast protective mound. These structures 2 may, for example, comprise storage platforms 4 for waste packages, where appropriate on several levels, access galleries to these platforms and underground galleries 5, placed under the platforms 4, which allow the monitoring and collection of any infiltration water likely to have been in contact with the waste packages.

[0032] The protective mound is made up of a succession of layers 6 of materials of different natures, and in particular of raw materials (for example shale or sandstone), compacted where appropriate, drainage layers of sand, equipped with drains, with the interposition of at least one impermeable membrane 7, for example based on bitumen, drains being preferably arranged above and below the membrane 7.

[0033] In such a configuration, the slopes 8 of the mound are less stable than the central part, and require particular attention, particularly with regard to erosion. It appears in particular necessary to better control the effects of rainwater and to prevent its penetration into the slope and to organize its flow.

[0034] For this purpose, the slope 8, the surface of which can be modeled with horizontal contour lines and slope lines perpendicular to the contour lines, is covered with a covering structure 10 comprising a framework 12 anchored in the ground of the slope, a framework on which monolithic panels 14 rest.

[0035] The frame 12, part of which is illustrated in [Fig. 2], comprises anchoring elements 16 to which are fixed so-called meridian beams 18, aligned along the slope lines of the embankment to form rows 20 of meridian beams 18. At least some of the anchoring elements 16 are boxes having a cavity of at least 0.25 m3 intended to be filled with ballast, for example sand. The anchoring elements 16 and the meridian beams 18 are made of ultra-high performance fiber-reinforced concrete.

[0036] Each of the meridian beams 18 is supported by two adjacent anchoring elements 16 located one above the other, engaged with the anchoring reliefs 24 of the adjacent anchoring elements. The anchoring reliefs 24 may be constituted for example by hooks inserted into openings 26 or notches formed in the meridian beams 18, with sufficient constructive play to absorb the relative thermal expansions of the materials.

[0037] The meridian beams 18 each have a section of meridian channel 28 which. When the beams are arranged end to end to form a row 20 of meridian beams 18, the sections 28 open into each other from the highest beam of the row 20 to the lowest to form a continuous meridian flow channel 30.

[0038] Each meridian beam 18 further comprises at least one bearing face 32 and at least one stop 34 projecting from this bearing face 32, for the assembly of the monolithic panels 14. The bearing faces 32 of the meridian beams 18 of the same row 20 together form a bearing surface of the row 20 of meridian beams 18. In this case, two bearing faces 32 are provided for at least some of the meridian beams 18, located on either side of the channel section 28, and each carrying several stops 34, and the corresponding rows 20 of meridian beams 18 have two bearing surfaces on either side of the meridian flow channel 30.

[0039] The rows 20 of meridian beams 18 are positioned along the slope lines, respecting a spacing between two adjacent rows of meridian beams which is relatively constant, as illustrated in [Fig.4]. This spacing may be, purely for information purposes, of the order of 4 to 5 meters between the central axes of the adjacent meridian channels 30.

[0040] The monolithic panels 14, illustrated in particular in Figures 3, 4 and 6, are made of ultra-high performance concrete (UHPC) within the meaning of the aforementioned NF-P 18-470 standard. The panels are large in size, with a covering surface area greater than 4m2. They have a general shape of an irregular quadrilateral with an upper face 36, a lower face 38 opposite the upper face 36, two opposite large sides 40, 42 whose length is sufficient to span the space between two adjacent lines 30 of meridian beams 28, and two opposite small sides 44, 46 connecting the two large sides 40, 42 and having lengths that are substantially different but less than half of a large side 40, 42, for example of the order of 2 meters for one of the small sides 44 and of the order of 0.4 meters for the other 46. One 40 of the two large sides, called the upper one, forms an oblique flow channel 48 which extends over its entire length.The large opposite side 42, called the lower side, forms a nose 50 which extends over its entire length. The upper face 36 is preferably flat between the oblique flow channel 48 and the nose 50. The lower face 38 has at least three projecting fixing studs 52, having a head 54 and a transverse notch 56, as illustrated in [Fig. 6]. Each of the two small opposite sides forms a skirt 58, 60 projecting relative to the lower face 38.

[0041] In [Fig.4], among the monolithic panels 14, there are panels 14D rights and 14G left panels, depending on whether the larger 44 of the short sides is on the right or left of the panel seen from the front when the larger upper side 40 is positioned above the lower large side 42. The right 14D and left 14G panels have shapes symmetrical to each other with respect to a plane of symmetry perpendicular to the larger of the short sides 44.

[0042] The monolithic panels 14 are intended to be placed on the frame 12 by forming rows 62 of monolithic panels alternating right panels 14D and left panels 14G positioned head to tail with an overlap, each row resting on two adjacent rows 20 of meridian beams 18. More precisely, the nose 50 of the lower side 42 of each panel 14 is inserted without contact into the oblique flow channel 52 of the upper side 40 of the next adjacent panel in the row 62, covering an outer side of this oblique flow channel 52, as illustrated in FIGS. 5 and 7. The baffle formed between the nose 50 of the lower side 42 of a panel and the oblique flow channel 52 of the lower adjacent panel is therefore in the open air, without the interposition of a sealing joint or other. Each row 62 of monolithic panels 14 thus has a continuous upper surface, without opening, along the slope lines.Furthermore, the skirts 58, 60 formed by each of the short sides 44, 46 penetrate without contact into the meridian flow channel 30 of one of the adjacent rows 20 of meridian beams 18 so that each row 62 of monolithic panels 14 has a continuous upper surface extending transversely between the meridian flow channels 30 of the two adjacent rows 20 of meridian beams 18. The long sides 40, 42 of each panel 14 are oblique relative to a horizontal plane, so that the oblique flow channels 48 of the large upper sides 40 of the left 14G and right 14D panels of the same row 62 of monolithic panels 14 have a slope which directs the flow alternately towards the meridian flow channel 30 of one or other of the rows 20 of meridian beams 18. supporting row 62 of monolithic panels 14.Thus, rain falling on any monolithic panel 14 flows by gravity towards the large lower side 42 of said panel 14, drips into the oblique flow channel 48 of the large upper side 40 of the panel 14 located immediately below in the row 62, then is evacuated following the slope of this oblique flow channel 48 which opens into the meridian flow channel 30 of one of the adjacent rows 20 of meridian beams 18. It should be noted that the monolithic panels 14 are not equipped with any static seal, since they are entirely made of BFUP.

[0043] Two of the pads 52 of each panel 14 come into gravitational support facially against a bearing surface 32 of one of the two adjacent rows 20 of meridian beams 18 and laterally against two stops 34 formed on the first of the two adjacent rows 20 of meridian beams and at least a third of the pads 32 comes in gravitational support facially against the bearing surface 34 of the other of the two adjacent rows 20 of meridian beams 18 and laterally against a stop 34 formed on the second of the two adjacent rows 20 of meridian beams 18. The pads 32 and the stops 34 have conjugate shapes, as illustrated in [Fig.8], which ensures locking of each of the monolithic panels against tearing. The conjugate shapes are however oriented so as to allow the pads to slide freely on the stops in a direction parallel to the level lines. This potential lateral movement of the panels 14 relative to the frame 12 is limited by the skirts 58, 60 of the short sides 44, 46 of the panels 14, which penetrate into the meridian flow channels 30 of the adjacent rows 20 of meridian beams 18.Thus, each panel 14 rests by gravity at the level of at least three pads 32, and preferably only three pads 32, on the two adjacent rows 20 of meridian beams 18, with limited transverse movement in a direction parallel to the level lines, and with a form lock opposing possible tearing in an upward direction perpendicular to the panel 14.

[0044] The length of each meridian beam 18 is arbitrary, but preferably equal to a multiple of the pitch between two panels 14 of the same row.

[0045] Preferably, and as illustrated in [Fig. 4], each of the rows 20 of meridian beams 18 is used to support two adjacent meridian rows 62 of panels 14, the meridian flow channel 30 then serving as a collector for water coming from the two adjacent rows 62 of panels.

[0046] Naturally, the examples shown in the figures and discussed above are given for illustrative purposes only and are not limiting. It is explicitly provided that the different embodiments illustrated can be combined with each other to propose others.

Claims

Claims

1. Storage or disposal site (1) comprising a structure (2) intended for the storage or disposal of radioactive waste, located at least partially under an embankment (8) having contour lines and slope lines, and a cover structure (10) at least partially covering the embankment (8), characterized in that the structure comprises: - a framework (12) comprising meridian beams (18) forming rows (20) of meridian beams (18) positioned along the slope lines of the embankment (8); and - monolithic panels (14) made of ultra-high performance fiber-reinforced concrete, forming meridian rows (62) of monolithic panels (14), each of the meridian rows (62) of monolithic panels (14) being placed on and supported by two adjacent rows (20) of meridian beams (18) among the rows (20) of meridian beams (18).

2. Storage or warehousing site (1) according to claim 1, characterized in that the frame is made of ultra-high performance fiber-reinforced concrete.

3. Storage or warehousing site (1) according to any one of the preceding claims, characterized in that each of the monolithic panels (14) has a lower face (38) and studs (52) projecting from the lower face (38), at least two of the studs (52) bearing by gravity facially against a bearing surface (32) formed by a first of the two adjacent rows (20) of meridian beams (18) and laterally against two stops (34) formed by the first of the two adjacent rows (20) of meridian beams (18), and at least one of the studs (52) bearing by gravity facially against a bearing surface (32) of a second of the two adjacent rows (20) of meridian beams (18) and laterally against a stop (34) formed by the second of the two adjacent rows (20) of meridian beams (18).

4. Storage or warehousing site (1) according to claim 3, characterized in that the studs (52) and the stops (34) have conjugate shapes engaged in each other so as to ensure locking of each of the monolithic panels (14) relative to the adjacent rows (20) of meridian beams (18) in a direction as- downward perpendicular to the lower face (38).

5. Storage or warehousing site (1) according to claim 4, characterized in that the pads (52) are free to slide on the stops (34) in a direction parallel to the level lines while keeping the conjugate shapes engaged in each other.

6. Storage or warehousing site (1) according to one of claims 4 or 5, characterized in that the pads (52) are free to slide on the stops (34) in an upward direction parallel to the slope lines while keeping the conjugate shapes engaged in each other.

7. Storage or warehousing site (1) according to any one of claims 3 to 6, characterized in that each of the monolithic panels (14) comprises three studs (52) and only three.

8. Storage or warehousing site (1) according to any one of the preceding claims, characterized in that each of the monolithic panels (14) of any row (62) among the meridian rows of monolithic panels, except a lowest monolithic panel of any row (62), partially covers, without contact, a monolithic panel (14) directly adjacent and lower of said any row (62), and each monolithic panel (14) of any row (62), except a highest monolithic panel of any row, being partially covered, without contact, by a monolithic panel (14) directly adjacent and higher of any row (62).

9. Storage or warehousing site (1) according to claim 1, characterized in that - between any two panels of any row is defined a contactless overlap zone, the overlap zone being entirely in the open air. - each of the monolithic panels (14) of any row (62), except where appropriate the lowest monolithic panel of said any row, has an oblique lower side (42) which extends from one of the two adjacent rows (20) of meridian beams (18) to the other at an angle relative to a horizontal plane and forms a projecting nose (50), which is inserted, without contact, into an oblique flow channel (48) formed along an oblique upper side (40) of a directly adjacent and lower monolithic panel of any row (62), the oblique flow channel extending from one of the two adjacent rows (20) of meridian beams (18) to the other at an angle relative to a horizontal plane, the oblique flow channel (48) and the projecting nose (50) together delimiting a baffle entirely in the open air;and / or - each of the monolithic panels (14) of any row (62), except where appropriate the uppermost monolithic panel of any row (62), has an oblique upper side (40), which forms an oblique flow channel (48) which extends from one of the two adjacent rows (20) of meridian beams (18) to the other at an angle to a horizontal plane and into which is inserted, without contact, a nose (42) which is formed along an oblique lower side (42) of a directly adjacent and upper monolithic panel (14) of any row (62) and extends from one of the two adjacent rows (20) of meridian beams (18) to the other at an angle to a horizontal plane, the oblique flow channel (48) and the projecting nose (50) together delimiting a baffle entirely in the open air.;

10. Storage or warehousing site (1) according to claim 9, characterized in that the oblique flow channel (48) opens into a meridian flow channel (30) formed by one of the adjacent rows (20) of meridian beams (18) and oriented along a slope line.

11. Storage or warehousing site (1) according to claim 10, characterized in that at least some of the monolithic panels (14) have two opposite short sides (44, 46) each connecting one end of the large upper side (40) to one end of the large lower side (42), each of the short sides forming a skirt (58, 60) penetrating without contact into the meridian flow channel (30) formed by one of the adjacent rows (20) of meridian beams (18).

12. Storage or warehousing site (1) according to any one of the preceding claims, characterized in that at least two of the rows meridians (62) of monolithic panels (14) are adjacent, one of the adjacent rows (20) of meridian beams (18) supporting one of the two adjacent meridian rows (62) being a row (20) of meridian beams (18) common to the two adjacent meridian rows (62), also constituting one of the adjacent rows (20) of meridian beams (18) supporting the other of the two adjacent meridian rows (62).

13. Storage or warehousing site (1) according to claim 12, characterized in that the common row (20) of meridian beams (18) forms a meridian flow channel (30) oriented along a slope line and collecting at least part of the rainwater running off each of the two adjacent meridian rows (62).

14. Storage or warehousing site (1) according to any one of the preceding claims, characterized in that the frame (12) comprises anchoring elements (16) provided with anchoring reliefs (24), each of the meridian beams (18) being supported by two adjacent anchoring elements (16) among the anchoring elements, engaged with the anchoring reliefs (24) of the adjacent anchoring elements (16).

15. Storage or warehousing site (1) according to claim 14, characterized in that: - at least some of the anchoring elements (16) are caissons having a cavity of at least 0.25 m3 filled with ballast; and / or - at least some of the anchoring elements (16) are at least partially buried in the slope; and / or - at least some of the anchoring elements (16) constitute isolated sole plates each housed in a shaft excavation made in the slope.

16. Storage or warehousing site (1) according to any one of the preceding claims, characterized in that - the ultra-high performance fiber-reinforced concrete contains metal fibers, in particular stainless steel; and / or - the monolithic panels (14) are flat; and / or - at least some of the monolithic panels (14) have a dimension greater than 4m2; and / or - the adjacent rows (20) of meridian beams (158) are located at a maximum distance from each other, measured at at least one measuring point and along the level line passing through the measuring point, which is greater than 4 meters.

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