US Government As Represented by the Secretary of the Army

Other

Landris T Lee

Philip Garcin Malone

Daniel A Leavell

Stafford S Cooper

Mickey D Blackmon

Johannes L Wibowo

Richard W Peterson

Perry A Taylor

John F Peters

A transportable system and method for determining erodibility of a surface such as that of an earthen embankment. Select embodiments deploy an instrumented portable bottomless open channel test enclosure, either a manifold or an inlet to a flume, and sufficient piping and valves to provide a fluid flow over a surface of interest. Select embodiments use mounts, such as spikes, affixed to the bottom edges of the open channel to position the channel flush against the surface, thus reducing or preventing fluid leakage along the periphery. Select embodiments emulate a hydraulic open channel having smooth vertical sides as may be found in a civil engineering laboratory. Select embodiments incorporate an external pump, gauges for taking measurements while fluid flows through the channel, an inlet and an outlet and a re-cycling sub-system from the outlet to the inlet.

Transportable apparatus and method for enabling determination of erodibility characteristics

Provided is a consolidometer and methods of its use. In its preferred embodiment, the device and methods permit accurate and convenient laboratory sampling of the self-weight consolidation of media, such as soft soil and soil slurries that may result from dredging operations. One option also provides for attaching sensors at locations along the consolidometer for taking data on additional characteristics of the media.

Apparatus and methods for determining self-weight consolidation and other properties of media

A method and apparatus for installing a groundwater sampling device into the ground includes a generally cylindrical housing open at top and bottom end portions and defining a recess therein. An expendable tip member is removably connected to the bottom and portion of the housing. A well tubing or casing is positioned generally centrally in the recess and includes top and bottom end portions. An elongated spiral-wound cylinder is slidably positioned in the recess of the housing and in a surrounding relationship to the tubing. The tubing is attached to the tip member at the bottom end portion thereof and includes a lower section having a plurality of perforations about the periphery thereof to allow fluid to enter the interior of the tubing.

Method and apparatus for installing a small-scale groundwater sampling well

The invention relates to a grout injection device and method for depositing a liquid grouting material in a hole formed by a cone penetrometer. The device is a modular design with a sliding sleeve member that replaces older grouting injection devices with exit port opening actuated by fluidic pressures with an improved more reliable mechanical design that is actuated by withdrawal of the cone penetrometer pipe string by friction between the sliding sleeve and the soil wall formed by the cone penetrometer. The invention solves the problem of pressure losses that can occur with prior art devices resulting in partially opened grout exit ports. The instant invention's design also achieves proper channeling of the grout flowing out of the device's grout exit ports for even distribution of grout filling the hole. This is achieved by the invention's boss structures mounted on an adapter unit of the device. The inventions method allows the cone penetrometer system to perform subsurface surveys and subsequent grouting events in a single penetrometer push event without the need for first retrieving the survey instrumentation and then going back into the hole with a stand-alone grouting device.

Geotechnical grouting device and method

A zone isolator module for use on a penetrometer comprises a tubular body having an annular recess in an exterior wall thereof, an elastomer membrane fixed in the annular recess and adapted to lie against an inner surface of the recess, a sleeve slidably disposed on the tubular body and slidably movable between a first position in which the sleeve completely covers the recess, and a second position in which the sleeve is substantially removed from the recess, and the body having an opening extending outwardly from an axial central bore therethrough to the inner surface of the recess, whereby fluid flowed through the bore and the opening operates to expand the elastomer membrane against the sleeve when the sleeve covers the recess and to expand the elastomer membrane beyond the exterior wall of the body when the sleeve is substantially removed from the recess.

Zone isolator module for use on a penetrometer

An improved module and assembly for sampling liquids and gases within the ground is characterized by module housings containing sampling cavities having lateral openings to the exterior of the housings. Within each lateral opening a removable insert and piston assembly is provided. The piston is displaceable between open and closed positions within the insert in response to changes in pressure from pressure and vacuum sources. When in the closed position, the piston and insert are flush with the exterior of the housing to prevent contaminants from accumulating at the opening. When the module is inserted to a desired depth in the ground, the piston is displaced to the open position and samples from the soil at the desired depth enter the sampling cavity.

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Vicksburg, MS, United States of America

Landris T Lee