US1997132A

US1997132A - Packing core for earth dams

Info

Publication number: US1997132A
Application number: US661827A
Authority: US
Inventors: Collorio Felix
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-11-14
Filing date: 1933-03-20
Publication date: 1935-04-09
Anticipated expiration: 1952-04-09

Description

April 9, 1935. F. coLLoRlo v PACKING CORE FOR EARTH DAMS Filed March 20, 1953 Patented Apr. 1935 w a i 't 1,997,132

UNITED STATES PATENT Lo-FFIc 1 Application March 20, 1933, Serial No. 661,827

In Germany November14, 1930 7 Claims. (CI. 6131) This invention relates to a -core for earth dams, maybe controlled. Should it be found after particularly retaining dams. V 7 years of operation that the material of the walls The safety of earth dams is determined, above ;is, rotten and full of cracks, or if other reaall, by their permeability to water, and special sons make it desirable, the filler b lying between attention is therefore paid-to making them tight the walls'may be consolidated by the injection 5 by providing a special tightening core in the of cement or flushing with loam. The stiffening center thereof, especially in case of high dams. of the core due to this consolidation will not The existing kinds of cores made of sheet iron, cause any trouble, since the dam layers have concrete or reinforced concrete and constructed suficiently settled and the stiff core will be ca- 10 either solid or hollow with control passages and pable of taking up the correspondingly reduced 10 shafts surfer from the drawback that they do motions of the dam. As shown in Fig. 2, the not sufficiently respond to the motions of fresh lower ends of the opposite metallic walls a are embankments caused by water pressure with the seated in the masonrybase g embedded in the result that crevices appear which might endanearth foundation f of the dam. The masonry ger the entire dam construction. To guard base, when used, stiffens the foundation of the 5 against this possibility horizontal motion joints dam to withstand excessive pressure. have been provided for such cores, but this con- The tight elastic walls of which the packing struction too has failed to insure perfect packcore is composed may consist, for example, of ing. I iron, steel or other metals in the form of sheets,

The invention eliminates the defects men-' corrugated sheets, grooved plates, sheet piles 20 tioned by providing a core consisting of two and the like, or they may be composed of several or more tight elastic walls which though closematerials acting in conjunction with one another,

'ly connected with the building ground are not a few examples of them being iron or steel interconnected, the space between every two sucfabric with rough plastering of suitable cementicessive walls being occupied byapermeable filler. 'tious material; brick or concrete stone walls 25 In the drawing two embodiments of the invenwith iron insertions; or fibrous tissues, such as tion are shown. Figures 1 and 2 show respeccanvas or cotton cloth saturated with bitumen. tively cross-sections of the two embodiments of As permeable fillers for the space between two the dam. v walls arranged one behind the other may serve,

In the figures a designates the elastic thin for instance, sand, gravel, broken stones, broken 30 walls of the core of the dam, between which is bricks, stratified layers of quarry stone, bricks, disposed the filler b. Between the core walls or concrete stones. and Within the fill a e a d the Control Besides the advantages mentioned, a core con- Da S S a e- 011 pp Sides o the struction according to the invention involves the m c e are t e op e bankm ts d and 6 further advantage of a considerable reduction in 35 of the dam material, heaped on the foundation cost compared with known concrete cores. J. As shown in Fig. i, the foundation is en- I laim; tirely of t as Shewn in a masonry 1. A packing core for earth dams and the like, base 9 is p d d for t Gore, e remainder consisting of at least two water impermeable and 40 of the oundat b g of e elastic walls arragned with a space between them 40 The elastic thin Wells 66 are Capable of O within the dam and being unconnected with one lowing t ot s o the embankment d, 6 t another, the said walls projecting with their lower out causing destruction of their structure, notportion int-, the building ground and being fixed withstanding the fact that these motions are t the ame, and a water permeable filler in the quite considerable especially during the initial space between the said walls. 45 operating period according to the changing wa 2. A packing core for earth dams and the like, te l v Ow o the d ep foundation of the consisting of at least two water impermeable and walls and the enlargement of the foundation elastic walls arranged with a space between them sole of the dam, excessive shearing stresses are within the dam and being unconnected with one avoided at the fixing poin s o he walls which another, the said walls consisting of sheet iron 50 may besufiiciently spaced apart, to provide room and projecting with their lower portion'into the for the passage c. By means of this passage building ground and being fixed to the same, the interior of the core can be inspected to asand a water permeable filler in the space between certain the condition of the iron walls a and the said walls.

the filling b, so that deterioration of the core 3. A packing core for earth dams and the like,

4. A packing, core for earth dams and the like, 7

consisting of atleast two water impermeable and elastic walls arranged with a space between them within the dam and being unconnected with one another, the said walls consisting of sheet iron and projecting with their lower portion into the building ground and being fixed to the same; and a water permeable filler in the space betweenthe said walls consisting of sand.

5. A packing core for earth damsand the like,

consisting of at least two water impermeable and elastic walls arranged with a space between them within the dam and being unconnected with one another, the said walls consisting of sheet iron and projecting'with' their lower portion into the building ground and being fixed to the same, and a water permeable filler in the space between the said walls consisting of a gravel.

6. A packing core for earth dams and the like, consisting of at least two water impermeable and elastic walls arranged with a space between them within the dam and being unconnected with one another, the said walls consisting of sheet iron and projecting with their lower portion into the building ground and being fixed to the same and a water permeable filler in the space between the said walls consisting of broken stones.

portion into a recess of the building ground to which they are anchored and extending with their upper edge at least to the surface of the dam, and a Waterpermeable filler in the space between the said walls.

- 1 FELIX COLLORIO.