Soil-displacement drill (1) for soil-displacing drilling in a surface (10) in order to form a foundation pile (2), comprising a drill pipe (3), a drill head (4) at an end of the drill pipe (3) with several flap leaves (5) which are pivotable between a closed position for closing off the end of the drill pipe (3) and an open position for making this end freely accessible and one or several closing elements (6) to keep these flap leaves (5) in their closed position and prevent pivoting of the flap leaves (5) which are configured to fail during drilling into the surface (10) in such a way that these closing elements (6) do not impede pivoting of the flap leaves (5). In addition, the present invention relates to an assembly of a drill head (4) and one or several closing elements (6) for such a soil-displacement drill (1), a method for soil-displacing drilling and a method for converting a soil-displacement drill (1) to form such a soil-displacement drill (1).

The present invention aims to provide an interlocking stabilization system (100) for stabilizing slope, unrestrained earth or the like. Accordingly, the interlocking stabilization system (100) includes: a) a compressed bearing plate (110); b) at least one earth anchor (150) having a plurality of extendable pivotally hinged wings (152) penetrated to a predetermined depth and in communication with the compressed bearing plate (110) through a tendon bar/wire (160); wherein the compressed bearing plate (110) is adapted to be compressed and advanced toward the at least one earth anchor (150) through the tendon bar/wire (160), such that a reflective frustum cone or compact soil reaction (112) is formed thereof; wherein the plurality of extendable pivotally hinged wings (152) of the at least one earth anchor (150) is able to extend outwardly to an angle as the earth anchor (150) is progressively withdrawn under the compression, such that a frustum cone or end bearing force (154) is formed thereof; and wherein action-reaction forces (reflective frustum and end bearing force) defined between the compressed bearing plate (110) and progressively with-drawn of the at least one earth anchor (150) through the tendon bar/wire (160) are able to eliminate or overcome the active and passive zone pressures existed in the slope, unrestrained earth or the like.

The present invention aims to provide an interlocking stabilization system (100) for stabilizing slope, unrestrained earth or the like. Accordingly, the interlocking stabilization system (100) includes: a) a compressed bearing plate (110); b) at least one earth anchor (150) having a plurality of extendable pivotally hinged wings (152) penetrated to a predetermined depth and in communication with the compressed bearing plate (110) through a tendon bar/wire (160); wherein the compressed bearing plate (110) is adapted to be compressed and advanced toward the at least one earth anchor (150) through the tendon bar/wire (160), such that a reflective frustum cone or compact soil reaction (112) is formed thereof; wherein the plurality of extendable pivotally hinged wings (152) of the at least one earth anchor (150) is able to extend outwardly to an angle as the earth anchor (150) is progressively withdrawn under the compression, such that a frustum cone or end bearing force (154) is formed thereof; and wherein action-reaction forces (reflective frustum and end bearing force) defined between the compressed bearing plate (110) and progressively with-drawn of the at least one earth anchor (150) through the tendon bar/wire (160) are able to eliminate or overcome the active and passive zone pressures existed in the slope, unrestrained earth or the like.

The invention relates to a method and a device for producing a foundation element in the ground, wherein a hole is formed in the ground which is filled with a hardenable filling mass in order to form the foundation element. According to the invention provision is made in that prior to the hardening of the filling mass a data carrier is introduced into the hole, on which information on the produced foundation element is stored .

Backflow during installation of a ground anchor is controlled using a preventer, and the preventer is removed during curing of grout and backflow. A cylinder may be inserted at least partially into a structure, and the preventer placed or attached atop the cylinder. A hollow bar may be extended through the preventer and cylinder into one or more layers of materials beyond the cylinder. Grout may be delivered to the layer(s) through the hollow bar, which may cause a viscous backflow to flow into the cylinder and preventer. During application of the grout, the preventer may be used to control a rate of backflow. After application of the grout, the preventer may put into an open position, and a seal assembly forced down the hollow bar, through an interior cavity of the preventer, to a position below the preventer, after which the preventer may be removed while the grout and backflow cure.

Backflow during installation of a ground anchor is controlled using a preventer, and the preventer is removed during curing of grout and backflow. A cylinder may be inserted at least partially into a structure, and the preventer placed or attached atop the cylinder. A hollow bar may be extended through the preventer and cylinder into one or more layers of materials beyond the cylinder. Grout may be delivered to the layer(s) through the hollow bar, which may cause a viscous backflow to flow into the cylinder and preventer. During application of the grout, the preventer may be used to control a rate of backflow. After application of the grout, the preventer may put into an open position, and a seal assembly forced down the hollow bar, through an interior cavity of the preventer, to a position below the preventer, after which the preventer may be removed while the grout and backflow cure.

A foundation construction device includes a fixed guiding device and a combined device. The fixed guiding device includes a fixed rack and a guiding device. The combined device includes a chain cutter power transmission device, a spoil treatment device, and a rack.

A monolithic manhole is formed in a levee without trenching, to provide access to drain pipes within the levee for maintenance and repair of the pipes. The manhole is formed by first forcing an outer tube downwardly into the earth and levee and removing soil from within the outer tube to expose the pipe. An inner tube is lowered into the outer tube, with an annular space maintained between the tubes. The annular space is filled with concrete, which hardens to form a monolithic vertical wall. A concrete floor may be poured at the bottom of the wall and a cover attached to the top of the wall. A hole is cut in the pipe inside the wall to provide internal access to the pipe.

A monolithic manhole is formed in a levee without trenching, to provide access to drain pipes within the levee for maintenance and repair of the pipes. The manhole is formed by first forcing an outer tube downwardly into the earth and levee and removing soil from within the outer tube to expose the pipe. An inner tube is lowered into the outer tube, with an annular space maintained between the tubes. The annular space is filled with concrete, which hardens to form a monolithic vertical wall. A concrete floor may be poured at the bottom of the wall and a cover attached to the top of the wall. A hole is cut in the pipe inside the wall to provide internal access to the pipe.

Disclosed are a pile-bottom grouting cavity and a method for using same, and a cast-in-place pile body and a method for constructing same. The pile-bottom grouting cavity comprises: a grouting capsule, having an expansion state in which the grouting capsule is filled with grout to bear a pile body, and a contracted state in which the grouting capsule is hollow; a grouting pipe in communication with an inner cavity of the grouting capsule to grout the grouting capsule; and a fixing plate, with the grouting capsule being arranged on the fixing plate, and the fixing plate being provided with a through hole that is in communication with the bottom of an accommodation hole, such that slurry and/or sediment in the accommodation hole pass through the fixing plate. The aim thereof is to solve the problems in the prior art of hole wall collapse and excessive sediment that seriously affect the quality of construction in a grouting pile with a grouting capsule during the construction of a cast-in-place bored pile.