The present disclosure provides an annular anchor installing instrument and an annular anchor installing method, relating to the technical field of ocean engineering. The annular anchor installing instrument includes an installation tube, a pump body assembly, a lifting portion and an installation portion. One end of the installation tube is provided with a cover body, and the other end of the installation tube is configured to be an open end for cooperating with the top of the annular anchor. The pump body assembly is arranged on the cover body, and used to vacuum the interior of the installation tube. The lifting portion is arranged on the cover body, and used to connect with a hoist. The installation portions are removably arranged on the cover body, and used to connect with the hoist and the anchor chain of the annular anchor, respectively.

The present disclosure provides an annular anchor installing instrument and an annular anchor installing method, relating to the technical field of ocean engineering. The annular anchor installing instrument includes an installation tube, a pump body assembly, a lifting portion and an installation portion. One end of the installation tube is provided with a cover body, and the other end of the installation tube is configured to be an open end for cooperating with the top of the annular anchor. The pump body assembly is arranged on the cover body, and used to vacuum the interior of the installation tube. The lifting portion is arranged on the cover body, and used to connect with a hoist. The installation portions are removably arranged on the cover body, and used to connect with the hoist and the anchor chain of the annular anchor, respectively.

The present disclosure provides an annular anchor, a method for calculating antitorque bearing strength thereof and an installing and recycling assemble for the anchor, relating to the technical field of ocean engineering. The annular anchor includes an anchor body opened at its upper and lower ends, and a connection portion arranged on the outer side wall of said anchor body for connecting with parts to be moored. The annular anchor provided by the present disclosure omits the top cover as the structure prevailing in the traditional suction anchor, avoiding the drawback of installing the traditional suction anchor on the seabed, instead the annular anchor can be installed to a certain depth below the seabed. During the descent, there is no need to take into account the resistance caused by the top cover, so that the annular anchor can be installed simply and quickly.

The present disclosure provides an annular anchor, a method for calculating antitorque bearing strength thereof and an installing and recycling assemble for the anchor, relating to the technical field of ocean engineering. The annular anchor includes an anchor body opened at its upper and lower ends, and a connection portion arranged on the outer side wall of said anchor body for connecting with parts to be moored. The annular anchor provided by the present disclosure omits the top cover as the structure prevailing in the traditional suction anchor, avoiding the drawback of installing the traditional suction anchor on the seabed, instead the annular anchor can be installed to a certain depth below the seabed. During the descent, there is no need to take into account the resistance caused by the top cover, so that the annular anchor can be installed simply and quickly.

An anchoring system installed on a bottom of a body of water. The anchoring system has a tube sheet with an access tube defining a flow channel therethrough. One or more water tubes pass through the tube sheet. Each of the water tubes defining a longitudinal channel through the tube sheet. Each longitudinal channel has an open end at the top side and a closed end below the bottom side. A plurality of flow channels pass through the tube sheet. A skirt extends from the bottom of the tube sheet and defines a volume within the skirt encompassing at least a portion of the water tubes and the flow channels. A shock absorber is coupled to the closed end of at least one of the plurality of water tubes. The anchoring system is installed using negative pressure and extracted using positive pressure.

An anchoring system installed on a bottom of a body of water. The anchoring system has a tube sheet with an access tube defining a flow channel therethrough. One or more water tubes pass through the tube sheet. Each of the water tubes defining a longitudinal channel through the tube sheet. Each longitudinal channel has an open end at the top side and a closed end below the bottom side. A plurality of flow channels pass through the tube sheet. A skirt extends from the bottom of the tube sheet and defines a volume within the skirt encompassing at least a portion of the water tubes and the flow channels. A shock absorber is coupled to the closed end of at least one of the plurality of water tubes. The anchoring system is installed using negative pressure and extracted using positive pressure.

Provided is a variable-pitch wall forming device for a press-fit type underground diaphragm wall, comprising a wall shoe (3), vibration chambers (4), a fixed-pitch box (1) and a variable-pitch box (2), wherein the variable-pitch box (2) is installed in the fixed-pitch box (1), the wall shoe (3) is installed on the bottom of the variable-pitch box (2) and the fixed-pitch box (1), and the vibration chambers (4) are provided on a side wall of the fixed-pitch box (1) and a side wall of the variable-pitch box (2). Also provided is a method of variable-pitch wall forming for a press-fit type underground diaphragm wall.

Provided is a variable-pitch wall forming device for a press-fit type underground diaphragm wall, comprising a wall shoe (3), vibration chambers (4), a fixed-pitch box (1) and a variable-pitch box (2), wherein the variable-pitch box (2) is installed in the fixed-pitch box (1), the wall shoe (3) is installed on the bottom of the variable-pitch box (2) and the fixed-pitch box (1), and the vibration chambers (4) are provided on a side wall of the fixed-pitch box (1) and a side wall of the variable-pitch box (2). Also provided is a method of variable-pitch wall forming for a press-fit type underground diaphragm wall.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.