The invention relates to a system (1) for use with a crane (4) on a surface vessel (3), comprising a crane tool (15) attached or attachable to a hoisting cable (5) of the crane (4) and one or more adaptors (16) attached or attachable to one or more tools (11-14, 25) for carrying out operations or to one or more components (2, 10), the crane tool (15) comprising a connector (17) and at least one of the adaptors (16) comprising a connector-counterpart (18).

A safety apparatus includes a safety fabric that in use is positioned in an access opening of a subsurface chamber. The safety fabric has a mesh with a plurality of mesh openings and a band formed around a perimeter of the mesh. At least one safety indicator is attached to the band by at least one strap. The safety indicator may be positioned outside of the access opening by extension of the strap when the safety fabric is positioned in the access opening. The subsurface chamber with the access opening may be an inlet chamber of a lift station.

A method that includes obtaining a sensor reading from a sensor installed inside an underground vault and determining whether the sensor reading is indicative of an alarm state. When the sensor reading is indicative of the alarm state, the method obtains at least one new reading and determines whether the sensor reading includes sensor drift based at least in part on the at least one new reading. The alarm state is established when the sensor reading is determined not to include sensor drift. The sensor drift is removed when the sensor reading is determined to include sensor drift.

The present invention discloses a rainfall sensing two-component high-polymer grouting device and a manufacturing method therefor, and belongs to the technical field of soil protection. The present invention includes an iron box and a water bucket. The water bucket is slidably fitted in the iron box. An inner bottom of the iron box is provided with a pair of lever upturning apparatuses symmetrically distributed about an axis center of the iron box. A lower surface of the iron box is provided with a curing agent ejector and a resin ejector. An end of two lever upturning apparatuses is slidably connected to a low surface of the water bucket. The switches of the curing agent ejector and the resin ejector are respectively connected to the other end of a lever upturning apparatus. A peripheral surface of the water bucket is provided with a permeable hole, and a permeable head is installed on the permeable hole. The present invention utilizes the lever principle of natural gravity and the spring-assisted method to realize the function of high-polymer grouting slope protection, and belongs to an ingenious mechanical structure apparatus. There is no need to stimulate and excite from the external energy, which is environmentally friendly and does not waste the resources and energy.

A method for forming a trench and a membrane-lined wall in the trench for levee reinforcement or leak prevention, prevention of water migration, and pollution control of impoundments. The membrane-lined wall generally includes a cementitious or concrete wall formed within an excavated trench. The concrete may be internally reinforced, and the wall may also comprise a double-layer of impermeable geomembrane liner that forms a barrier between the concrete and the sides and bottom of the trench. The membrane or liner reduces water migration, prevents levee leakage, and prevents the escape of contaminants in impoundments.

The inventive disclosures are directed to an improved fluid-applied waterproofing membrane that features two or more layers of waterproofing materials, in cold or hot liquid form, that provide a waterproofing barrier coating combined with an electrically-conductive mesh embedded in at least one of the two or more layers of waterproofing materials, wherein the electrically-conductive mesh provides the fluid-applied waterproofing membrane with intrinsic leak-detection capability.

The invention relates to a securing means and a method for securing a civil engineering element to a construction machine by means of a flexible securing element, wherein a first end of the flexible securing element is attached to the construction machine and a second end is provided with a connecting link which can pass through a securing lug on the civil engineering element and can be releasably fastened to the construction machine by a connecting means. According to the invention, a detection unit is provided on the connecting means, which detection unit is designed for identifying fastening of the connecting link to the connecting means. The detection unit can generate and output a signal if fastening of the connecting link is identified.

A ring-shaped cofferdam and temporary pit excavation structure using tapered square pipes includes a plurality of tapered square pipes a trapezoidal cross-section, in which the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in a longitudinal direction on a first side, the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in the longitudinal direction on a second side, the plurality of tapered square pipes are assembled by coupling the coupling protrusions and the coupling grooves, a long side of two parallel sides of the trapezoid is disposed outside, and a short side is disposed inside.

Embodiments describe a method for moisturizing soil at an open construction site. The method includes determining a target soil moisture level for the soil at the open construction site; measuring a current soil moisture level of a location within the open construction site with a moisture sensor while the moisture control system is moving along a predetermined path across the site; storing the current soil moisture level of the location in memory; determining a target volume of water for achieving the target soil moisture level at the location based on the current soil moisture level at the location; calculating a target application rate to achieve the target soil moisture level at the location based on the target volume of water; and applying the target volume of water at the target application rate to the location when the system is positioned to dispense water at the location of the site.

A grouting double-locking pressure real-time sensing system includes: a positioning structure fixed to a ground; wherein an expandable positioning structure passes through the positioning structure, and an input end of the expandable positioning structure is connected to the grouting structure; the pressure real-time monitoring component is connected to the expandable positioning structure; the expandable positioning structure comprises a hollow conduit, an expandable assembly, an upper positioning member, and a lower positioning member; wherein the upper positioning member and the lower positioning member are respectively connected to two ends of the expandable assembly; the hollow conduit passes through the upper positioning member and the lower positioning member, and is threaded to the the lower positioning member; the upper positioning member is fixed to the positioning structure; when rotating the hollow conduit, the lower positioning member moves up and down, so as to expand or contract the expandable assembly.