Provided is a multifunctional reel carrier, spoil material handling container device having a first trailer or first truck bed, a first container constructed to contain spoil on the first trailer or first truck bed, at least one spoil transporting device constructed to transfer spoil from a micro trencher and deposit the spoil in the first container and constructed to transfer spoil from the first container to a fill device, and at least one reel holder constructed to hold a reel of cable and/or innerduct/microduct present on the first truck or first trailer, or present on a second trailer or second truck. Also provided is a method of using the multifunctional reel carrier, spoil material handling container device to lay cable and/or innerduct/microduct underground.

De-trenching apparatus (100) for extracting a buried line, such as a cable or pipeline, is disclosed. The de-trenching apparatus comprises a channel (112) configured to receive a buried line to be extracted, the channel comprising a first flared opening (114) at a front end of the de-trenching apparatus and a second flared opening (115) at the rear end of the de-trenching apparatus, the first and second flared openings each having a curved surface (111) configured to support the line during extraction, and material removal means for removing material from around the buried line ahead of the de-trenching apparatus.

A trench wall apparatus includes a base frame held at its top end by a holding means held by at least one soil excavation means, which is positioned at a bottom end of the base frame. When soil is excavated while forming the trench, the trench wall apparatus is held by a clamping means that includes at least two clamping elements on opposite sides extended laterally by at least one actuating cylinder, whereby at least one part of the trench wall apparatus is clamped in the trench, and a pressing means applies a pressing force on the at least one soil excavation means. The clamping elements and clamping cylinder are positioned on an intermediate frame displaceably mounted along the base frame. The intermediate frame is clamped and fixed to the ground by the clamping means. The base frame having the soil excavation means is pressed downward by the pressing means.

The invention relates to civil engineering underground equipment comprising at least one work element for ground work, at least two actuation units, at least one measuring device for determining at least one current actuation parameter for each actuation unit, and a controller which is designed for controlling the actuation units, wherein the controller is connected to the measuring devices and, in order to prevent a tipping of the civil engineering underground equipment, is designed to limit a further actuation of the actuation unit or to display to an operator that the limit actuation parameter has been reached and/or the limit actuation parameter, on the basis of previously calculated limit actuation parameters for the actuation units which define exactly one permissible operating range, when a limit actuation parameter of at least one actuation unit is reached. It is intended for at least two different individual operating ranges to be stored in the controller, wherein each individual operating range comprises a different set of limit actuation parameters for the actuation units, and for the controller to be able to determine a combined permissible operating range.

An excavation apparatus (1) for an operating machine includes an apparatus body (2) having a portion (4) for coupling to the operating machine and delimiting a first body compartment (6). An excavation tool (8) of the apparatus (1) is partly housed, rotating around a rotation axis. A self-leveling body (10) includes a pair of abutment runners (12, 14) with a working surface (Z) and rotatably mounted in an idle manner with respect to the apparatus body (2), so the coupling portion (4) assumes different angular positions with respect to the abutment runners (12, 14). The apparatus body (2) is mechanically connected to the self-leveling body (10) to weigh in a balanced manner on the transverse walls (16, 18) and on the abutment runners (12, 14).

A method of using a fill mask to prevent overfill and/or spillage of a fill material from bonding to the roadway surface or staining the roadway surface during filling of a microtrench.

Methods and apparatus for cutting a trench (e.g., for a fiber optic cable or wire conductors) in an existing covering surface (e.g., a road surface). Debris from the cut trench is evacuated (e.g., vacuumed) from the trench as the trench is cut. The trench may be backfilled using a flowable composition. In one example, the flowable composition rigidifies after being flowed into the trench, and thereafter is substantially impermeable (e.g., having a hydraulic permeability of less than 0.0000001 cm/s upon drying), non-compressible and/or non-expanding.

Methods and apparatus for cutting a trench (e.g., for a fiber optic cable or wire conductors) in an existing covering surface (e.g., a road surface). Debris from the cut trench is evacuated (e.g., vacuumed) from the trench as the trench is cut. The trench may be backfilled using a flowable composition. In one example, the flowable composition rigidifies after being flowed into the trench, and thereafter is substantially impermeable (e.g., having a hydraulic permeability of less than 0.0000001 cm/s upon drying), non-compressible and/or non-expanding.

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 co 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.

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 co 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.