Abstract: An equipment for constructing micropiles in soil, includes a drilling rod with a bit with at least one nozzle jetting fluid forward, and at least one nozzle jetting fluid substantially orthogonal; an element pulling a protective tube, not adhering to the rod. A corresponding method includes drilling with a drilling rod jetting liquid in front of the bit until reaching stable soil strata; drilling and injecting high-pressure grout with one or more lateral nozzles, while the drilling rod rotates; pulling the protective tube, the tube being inserted to the area of grout injection; when the required depth is reached, the proximal end of the drilling rod is anchored to a plate; when the grout is consolidated, traction is applied to the drilling rod if necessary. Grout is injected into the protective tube.

Abstract: Disclosed herein is a support system that is temporarily placed below ground for preventing collapse of the excavated ground when a subway is constructed or a basement of a building is built. The excavated ground or load is supported by means of supporting members, the supporting members being pre-stressed by means of tensioning members and tendon support members serving to support the tensioning members. Consequently, the number of struts for supporting vertical piles and wales is considerably reduced so that obstacles in the under-ground space when it is excavated are removed. Furthermore, the constructional efficiency of the underground space is greatly improved, and the cost of construction is sharply reduced.

Abstract: An erosion control method and apparatus provides multiple concrete bodies for erosion control that each include tubular hollow bore sections. Each section has front and rear openings that communicate with the hollow bore. Each body is an elongated tapered pile-like member. The plurality of the concrete bodies can be installed side by side using a jetting pump that preferably occupies the bore, and with tongue and groove connections interlocking the bodies upon assembly. A plurality of the concrete bodies can be placed side by side to form a bulkhead or breakwater to protect a shoreline, bank, island or the like.

Abstract: A concrete silt fence constructed of a plurality of very thin, steel reinforced concrete panels that are aligned side by side and fixed in a trench in the ground to form a fence. Each of the panels is constructed of reinforcing steel bars and concrete. The steel bars are aligned parallel to each other and centered in the neutral axis of the panel. A steel bar is provided adjacent each of the two side walls of the panel to provide shear strength to the side edges of the panel, and one or more steel bars are provided between these two outside steel bars. A thin coating of concrete is poured around the reinforcing steel bars so that each pre-cast panel contains so little concrete that it does not satisfy the American Concrete Institute's standard for minimum concrete cover of reinforcement for pre-cast concrete wall panels that are exposed to earth or weather.

Abstract: A reinforced concrete panel is formed by embedding a stretched steel chain link mesh unit within concrete. The panel can be used to form a building or a flood dyke, or an earth reinforcing wall. The earth reinforcing wall is formed by digging a trench in the soil. Vertical posts are positioned in the trench, the posts spaced apart by a distance corresponding to a width of a panel. The panels are lowered between adjacent pairs of posts, and the edges of each panel slide within grooves formed in the posts. Finally, the trench is filled with concrete to encase the panels and posts.

Abstract: The present invention is directed to a composition and method for forming an inexpensive, semi-permanent cured foamed cementitious cover layer over deicing salt which is stored outdoors in large bulk mounds or piles and a salt pile or mound covered with such a layer.

Abstract: An integral concrete body for erosion control includes three separate sections of differing configuration. The sections include a lower tapered section that is in the form of an elongated tapered pile-like member. The upper section of the concrete body is generally rectangular. A transitional section that is also tapered forms a connection between the upper and lower portions of the concrete body. The plurality of the concrete bodies can be installed side by side with tongue and groove connections interlocking the bodies upon assembly. A plurality of the concrete bodies can be placed side by side to form a bulkhead or breakwater. In one embodiment, each concrete body can be comprised of separate connectable members. Anchors can be used to support the concrete bodies laterally, to prevent tilting or tipping when exposed to erosion, wind, or wave action.

Abstract: To construct an underground structure having smooth wall surfaces in a simple, safe and reliable way, plates (11,12) are buried in parallel, and soil and sand (G1) between the plates is removed. If the places where the plates are to be buried are loosened in advance, they can be buried more easily. A strut member (14) is interposed between the plates, which are used as both forms and sheathing. A hollow body, together with steel plates arranged on both sides of the hollow body, is buried into the ground, the bottom of the hollow body is closed with a shutter, the hollow body is drawn up together with soil in it, leaving the steel plates in the ground, and the remaining steel plates are used as both forms and sheathing. Reinforcement bars are disposed in the groove space thereby formed, and concrete is poured to build an underground structure.

Abstract: Apparatus for recovering logging tools and the like from a wellbore as part of a drilling operation such as for oil wells, irrigation systems and the like. The apparatus includes the use of a flexible connector member in the form of a flexible wire rope, or strand, or cable, or a series of short, bar-like members having lengths of about a couple of inches, or longer, which may be connected together by, for example, hinge pins, or U-joint connectors, or heavy chain-like links, or short lengths of wire-rope. The flexible connector members are provided with socket members attached with resin or by being swaged or crimped to the flexible member. The apparatus takes the place of the conventional rigid sinker bar assembly that typically may be approximately 20 feet in length and causes safety concerns when used with a top drive housing.

Abstract: A method for stabilizing and repairing whereby components are mixed to form an expandable foam which is injected under pressure in an expanded state behind or into the backfill material of an existing sheetpile seawall. Upon expansion, the foam displaces water and fills and seals cracks in the seawall and fills scoured voids in the backfill material. The method is also applied to rock revetment seawalls whereby the unexpanded foam is injected under pressure into the rock revetment. Upon expansion, the foam displaces water and fills and seals spaces in the rock revetment and interlocks the rock revetment.

Abstract: A process for planting a row of cement piles on the bed of a river includes the steps of (1) placing a vertical guide member of a U-shaped cross-section on the bed, the guide member including two parallel side plates having a width larger than that of the side surfaces of the piles, and a web interconnecting the side plates, the web having a vertical lower section and an inclined upper section; (2) sliding downward the first cement pile over the inner surface of the web until the first cement pile is planted on the bed; (3) inserting downward the second the cement pile into a space between the inclined upper section of the web and the first cement pile; (4) pushing downward the second cement pile, until the second cement pile is planted on the bed, with the result that the guide member is impelled by the second cement pile to move to a position which is in line with the first and second cement piles, and that a vertical coupler hole is defined between the tongues of the second cement pile and between the groo

Abstract: A mine seal is provided in which two walls are constructed across the mine entry. One of the walls is constructed in layers. After a lower portion of the layered wall is erected, a first layer of gravel is provided between the walls. The gravel is then saturated with a binding material such as a polyurethane composition so that the binding material fills the voids between the gravel particles. Additional layers of gravel subsequently saturated with the binding material are provided until the gravel layer is equal in height to the lower portion of the layered wall. The layered wall is then further erected and the process continues until the layered wall is completely constructed and the binding material-saturated filler material emplaces the mine roof. Finally, the exposed surface of the exposed wall is coated with a sealant. Alternatively, the binding material and filler material can be pre-mixed and injected into the space between the two walls.

Abstract: An angulated retaining wall comprised of a plurality of adjoining posts is disclosed for retaining a wall of material having gradual and/or abrupt changes in direction in its face. The retaining wall is comprised of corner-groove combinations wherein a corner of a post is disposed at a desired direction into a groove of an adjoining post and wherein the preferred angularity of said groove is less than that of the predetermined angularity of said corner. At the maximum disposition a first side of a corner will be parallel to and overlap in supportive contact with a first sidewall of said groove by a predetermined dimension between said corner and the edge of the first sidewall, and the adjacent side of said corner will be in supportive contact with the edge of the second sidewall of said groove. At an intermediate disposition the first side and the adjacent second side of said corner will be in supportive contact with the edges of the first sidewall and the second sidewall respectively of said groove.

Abstract: A cascade wall structure is provided which is made up of two elements, namely, a generally rectangular member with end ribs and a curved panel having curved ends which interlock with curved surfaces on the ribs of the members for creating a variety of wall structures for different purposes and different uses. In one wall structure the ribbed members are spaced in spaced parallel relationship with the curved panels interconnecting them. In another embodiment, the ribbed panel members are spaced in spaced parallel relationship and curved members interconnect them from a forward end to a rear end, respectively. Because of the angular and curved surfaces of the wall structure, it can serve as an effective sound barrier by deflecting the sound upwardly and against the multiple surfaces of the wall to dissipate the same. In addition, the wall can be backfilled with dirt to provide additional sound deadening and strength.