Cutoff - Revision history

Mpollei@gfnet.com at 15:59, 18 July 2023

2023-07-18T15:59:34Z

← Older revision		Revision as of 15:59, 18 July 2023
Line 5:		Line 5:
	{{Picture		{{Picture
	<!-- Add image file name (ex.image.jpg) -->		<!-- Add image file name (ex.image.jpg) -->
	\|image= ~~CutoffWallConstruction~~.jpg		\|image= Cutoff_wall_construction.jpg
	<!--Add link if applicable -->		<!--Add link if applicable -->
	\|link=		\|link=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption= Cutoff wall construction along the American River		\|caption= Cutoff wall construction along the American River.
			(Image Source: [http://www.publicdomainfiles.com/show_file.php?id=14003189411605 USACE])
	}}		}}

Mpollei@gfnet.com at 23:05, 10 July 2023

2023-07-10T23:05:20Z

← Older revision		Revision as of 23:05, 10 July 2023
Line 20:		Line 20:

	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls), USBR~~, 2014~~]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls), USBR]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR~~, 1987~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR]]

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==

Rmanwaring at 23:28, 19 December 2022

2022-12-19T23:28:41Z

← Older revision		Revision as of 23:28, 19 December 2022
Line 13:		Line 13:

	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
	"Seepage barriers, or cutoff walls, can be an effective means for controlling seepage through an earthfill dam or its foundation. Since approximately the early 1970s, the various types of cutoff walls available to embankment designers have increased with advances in [[construction]] methodologies and technology. The industry has made significant improvements in the equipment used to construct cutoff walls and in the efficiency of their [[operation]]. Increasingly, cutoff walls are being considered as a primary modification component within existing earthfill embankments that have a history of chronic seepage related problems or that undergo an acute seepage incident. With the wide array of cutoff wall alternatives, they can be the technically preferred and most cost-efficient methods to remediate an identified seepage problem given the difficulties of creating an earthfill cutoff within an existing embankment with an active reservoir."<ref name="DS13-16">[[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]</ref>		"Seepage barriers, or cutoff walls, can be an effective means for controlling seepage through an earthfill dam or its foundation. Since approximately the early 1970s, the various types of cutoff walls available to embankment designers have increased with advances in [[construction]] methodologies and technology. The industry has made significant improvements in the equipment used to construct cutoff walls and in the efficiency of their [[operation]]. Increasingly, cutoff walls are being considered as a primary modification component within existing earthfill embankments that have a history of chronic seepage related problems or that undergo an acute seepage incident. With the wide array of cutoff wall alternatives, they can be the technically preferred and most cost-efficient methods to remediate an identified seepage problem given the difficulties of creating an earthfill cutoff within an existing embankment with an active reservoir."<ref name="DS13-16">[[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls), USBR, 2014]]</ref>

	"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]</ref>		"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams, USBR, 1987]]</ref>

	"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>		"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>

	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls), USBR, 2014]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==

Grichards at 05:29, 14 December 2022

2022-12-14T05:29:50Z

← Older revision		Revision as of 05:29, 14 December 2022
Line 19:		Line 19:
	"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>		"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>

	==<noautolinks>[[Best Practices Resources]]<noautolinks/>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]

	==<noautolinks>[[Trainings]]<noautolinks/>==		==<noautolinks>Trainings</noautolinks>==
	{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]]		{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]]
	{{Video Icon}} [[On-Demand Webinar: Seepage Rehabilitation for Embankment Dams]]		{{Video Icon}} [[On-Demand Webinar: Seepage Rehabilitation for Embankment Dams]]

Grichards at 05:29, 14 December 2022

2022-12-14T05:29:10Z

← Older revision		Revision as of 05:29, 14 December 2022
Line 15:		Line 15:
	"Seepage barriers, or cutoff walls, can be an effective means for controlling seepage through an earthfill dam or its foundation. Since approximately the early 1970s, the various types of cutoff walls available to embankment designers have increased with advances in [[construction]] methodologies and technology. The industry has made significant improvements in the equipment used to construct cutoff walls and in the efficiency of their [[operation]]. Increasingly, cutoff walls are being considered as a primary modification component within existing earthfill embankments that have a history of chronic seepage related problems or that undergo an acute seepage incident. With the wide array of cutoff wall alternatives, they can be the technically preferred and most cost-efficient methods to remediate an identified seepage problem given the difficulties of creating an earthfill cutoff within an existing embankment with an active reservoir."<ref name="DS13-16">[[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]</ref>		"Seepage barriers, or cutoff walls, can be an effective means for controlling seepage through an earthfill dam or its foundation. Since approximately the early 1970s, the various types of cutoff walls available to embankment designers have increased with advances in [[construction]] methodologies and technology. The industry has made significant improvements in the equipment used to construct cutoff walls and in the efficiency of their [[operation]]. Increasingly, cutoff walls are being considered as a primary modification component within existing earthfill embankments that have a history of chronic seepage related problems or that undergo an acute seepage incident. With the wide array of cutoff wall alternatives, they can be the technically preferred and most cost-efficient methods to remediate an identified seepage problem given the difficulties of creating an earthfill cutoff within an existing embankment with an active reservoir."<ref name="DS13-16">[[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]</ref>

	"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed=-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]</ref>		"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]</ref>

	"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>		"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>

	==[[Best Practices Resources]]==		==<noautolinks>[[Best Practices Resources]]<noautolinks/>==
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]

	==[[Trainings]]==		==<noautolinks>[[Trainings]]<noautolinks/>==
	{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]]		{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]]
	{{Video Icon}} [[On-Demand Webinar: Seepage Rehabilitation for Embankment Dams]]		{{Video Icon}} [[On-Demand Webinar: Seepage Rehabilitation for Embankment Dams]]

Grichards at 06:32, 18 November 2022

2022-11-18T06:32:21Z

← Older revision		Revision as of 06:32, 18 November 2022
Line 1:		Line 1:
	<!-- Delete any sections that are not necessary to your topic. Add pictures/sections as needed -->		<!-- Delete any sections that are not necessary to your topic. Add pictures/sections as needed -->
	__NOTOC__		__NOTOC__
			[[Category:Underseepage]]
	----		----
	{{Picture		{{Picture

Rmanwaring at 17:00, 3 November 2022

2022-11-03T17:00:02Z

← Older revision		Revision as of 17:00, 3 November 2022
Line 12:		Line 12:

	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
			"Seepage barriers, or cutoff walls, can be an effective means for controlling seepage through an earthfill dam or its foundation. Since approximately the early 1970s, the various types of cutoff walls available to embankment designers have increased with advances in [[construction]] methodologies and technology. The industry has made significant improvements in the equipment used to construct cutoff walls and in the efficiency of their [[operation]]. Increasingly, cutoff walls are being considered as a primary modification component within existing earthfill embankments that have a history of chronic seepage related problems or that undergo an acute seepage incident. With the wide array of cutoff wall alternatives, they can be the technically preferred and most cost-efficient methods to remediate an identified seepage problem given the difficulties of creating an earthfill cutoff within an existing embankment with an active reservoir."<ref name="DS13-16">[[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]</ref>

	"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed=-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]</ref>		"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed=-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]</ref>

			"Construction of conventional rolled earthfill cutoff trenches, whether in a new earthfill dam or as a component to the modification of an existing dam, can be a prohibitively expensive operation, depending on the required depth, the existing natural [[groundwater]] conditions, and the availability of suitable impervious material. Cutoff walls can be a viable alternative for reducing seepage through [[Embankment Dams\|embankment dams]] and their foundations. Cutoff walls can be constructed by a variety of methods that do not require foundation [[dewatering]] and that greatly reduce the amount of excavation from that required for a rolled earthfill cutoff. Another advantage to cutoff walls is that they can often be constructed in very limited working spaces."<ref name="DS13-16"/>

	==[[Best Practices Resources]]==		==[[Best Practices Resources]]==
			{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) \| Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) (USBR, 2014)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]

Rmanwaring: Created page with " NOTOC ---- {{Picture |image= CutoffWallConstruction.jpg |link= |caption= Cutoff wall construction along the American River }} "Various methods of seepage and percolation control can be used, depending on..."

2022-11-03T15:55:01Z

Created page with " __NOTOC__ ---- {{Picture  |image= CutoffWallConstruction.jpg  |link=  |caption= Cutoff wall construction along the American River }}  "Various methods of seepage and percolation control can be used, depending on..."

New page

__NOTOC__
----
{{Picture

|image= CutoffWallConstruction.jpg

|link=

|caption= Cutoff wall construction along the American River
}}


"Various methods of seepage and percolation control can be used, depending on the requirements for preventing uneconomical loss of water and the nature of the foundation in regard to [[stability]] from seepage forces. Cutoff trenches, sheet piling, mixed=-in-place concrete pile curtains, slurry trenches, [[grouting]] of alluvium, or combinations of these methods have been used to reduce the flow and to control seepage forces. Blankets of impervious material, extending upstream from the toe of the dam and possibly covering all or part of the abutments, are frequently used for the same purpose."<ref name="SmallDams">[[Design of Small Dams | Design of Small Dams (USBR, 1987)]]</ref>

==[[Best Practices Resources]]==
{{Document Icon}} [[Design of Small Dams | Design of Small Dams (USBR, 1987)]]

==[[Trainings]]==
{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]]
{{Video Icon}} [[On-Demand Webinar: Seepage Rehabilitation for Embankment Dams]]
{{Video Icon}} [[On-Demand Webinar: Specialty Construction Techniques for Foundation Improvement and Seepage Reduction]]
{{Video Icon}} [[On-Demand Webinar: 3-D Effects on Estimation of Gradients, Seepage Flows and Evaluation of Internal Erosion Potential Failure Modes]]


{{Citations}}


{{revhistinf}}

Cutoff - Revision history

Mpollei@gfnet.com at 15:59, 18 July 2023

Mpollei@gfnet.com at 23:05, 10 July 2023

Rmanwaring at 23:28, 19 December 2022

Grichards at 05:29, 14 December 2022

Grichards at 05:29, 14 December 2022

Grichards at 06:32, 18 November 2022

Rmanwaring at 17:00, 3 November 2022

Rmanwaring: Created page with " __NOTOC__ ---- {{Picture |image= CutoffWallConstruction.jpg |link= |caption= Cutoff wall construction along the American River }} "Various methods of seepage and percolation control can be used, depending on..."

Rmanwaring: Created page with " NOTOC ---- {{Picture |image= CutoffWallConstruction.jpg |link= |caption= Cutoff wall construction along the American River }} "Various methods of seepage and percolation control can be used, depending on..."