A method of placing a slope staking tool including pickets, crossbeams, and a slope beam. The staking method includes: placing the pickets near an intersection C between a current ground and a plane S including a designed slope s; placing the crossbeams on the pickets placed, so as to cross the pickets; searching for a point where a height difference Δh between a predetermined point on the crossbeam and the plane S including the designed slope s, calculated by a surveying device, is zero; and placing, on the crossbeams, the slope beam inclined from the point where the height difference Δh is zero as found in the search step, toward the intersection C between the current ground and the plane including the designed slope.

A cellular structure includes a plurality of interconnected cells of fabric material. The cells are at least partially filled with a composite fill material that includes a particulate material and a bonding agent. A cellular unit made up of a plurality of the interconnected cells may have an associated load-bearing frame to enable lifting and/or transportation of the structure. The fill material is preferably resilient.

A cellular structure includes a plurality of interconnected cells of fabric material. The cells are at least partially filled with a composite fill material that includes a particulate material and a bonding agent. A cellular unit made up of a plurality of the interconnected cells may have an associated load-bearing frame to enable lifting and/or transportation of the structure. The fill material is preferably resilient.

The present invention is directed to a horizontally extendable silt fence. The present invention is also directed to a silt fence system comprising a horizontally extendable silt fence comprising a water permeable geotextile material having an upper edge and a lower edge, and a plurality of posts comprising an upper portion strutted and arranged to be coupled with the upper edge of the water permeable geotextile material, a lower portion structured and arranged to be coupled with the lower edge of the water permeable geotextile material, and an anchor portion structured and arranged to be driven into the ground to anchor the post. Also disclosed is a method of filtering silt from a fluid stream.

Aspects of a geogrid system for improving substrate interactions within a geotechnical environment is disclosed. In one aspect features of a geogrid system aid in trapping and restraining aggregate and soil. In one aspect a geotechnical environment is configured with a horizontal multilayer mechanically stabilizing geogrid. In said aspect the geogrid is extruded with a polymeric material and a compressible cellular layer. In said aspect, the horizontal multilayer mechanically stabilizing geogrid is comprised of either a cap or a core of polymeric material or is further comprised of at least one compressible cellular layer configured to the polymeric material. Further, the horizontal multilayer mechanically stabilizing geogrid is configured with a triangle or triaxial geometry with patterned discontinuities and a plurality of strong axes. Said configuration increases soil and aggregate trapping while reducing polymeric use.

An erosion-preventing laminate mat may include a first layer of slivers of a natural material, a second layer of slivers of a synthetic material, and, in embodiments, a third layer of an open mesh. A system for utilizing the erosion-preventing laminate may include a movable frame having an upper surface shaped to pass beneath a substantially flat sheet of tied block mat, the frame including a spindle below the upper surface for supporting a roll of the first mat, the first mat including the first layer of slivers of a natural material, the second layer of slivers of a synthetic material, and the third layer of an open mesh. In embodiments, a system for forming the mat includes a movable frame shaped to pass beneath a substantially flat sheet of the tied block mat, and including a spindle below the upper surface for supporting a roll of the first mat.

A construction process of soil nailing wall for geological disaster control is provided, which uses a construction equipment of soil nailing wall for geological disaster control, including underframe, lifting assembly and etc.; a lifting assembly is installed on the left side of the upper side of the underframe. When in use, the disclosure can automatically cut off the tree trunks extending out of the slope surface, and then install the grouting rods in the soil slope holes. At the same time, the disclosure can adapt to the tree trunks with different bending degrees to cut them, which solves the problem of tree trunks interfering with the construction, greatly improves the efficiency, prevents the cut tree trunks from falling onto the slope, avoids damaging the slope surface, and can adapt to a variety of situations to cut off the tree trunks.

A construction process of soil nailing wall for geological disaster control is provided, which uses a construction equipment of soil nailing wall for geological disaster control, including underframe, lifting assembly and etc.; a lifting assembly is installed on the left side of the upper side of the underframe. When in use, the disclosure can automatically cut off the tree trunks extending out of the slope surface, and then install the grouting rods in the soil slope holes. At the same time, the disclosure can adapt to the tree trunks with different bending degrees to cut them, which solves the problem of tree trunks interfering with the construction, greatly improves the efficiency, prevents the cut tree trunks from falling onto the slope, avoids damaging the slope surface, and can adapt to a variety of situations to cut off the tree trunks.

An integral polymer grid with a plurality of interconnected, oriented polyethylene terephthalate strands and an array of openings therein is made from a polyethylene terephthalate sheet-like starting material having holes or depressions therein that form the openings when the sheet-like material is uniaxially or biaxially stretched. The grid has a higher tensile strength to weight ratio and a higher creep reduced strength to weight ratio than corresponding ratios associated with a grid made from a non-polyethylene terephthalate starting material.

The disclosure provides a method for determining a slope slip plane with a gently-inclined soft interlayer, including: S1, determining a curve formed with a slip arc of a trailing edge tearing plane, a soft interlayer plane and a slip arc of a leading edge shear opening as a slope slip plane; S2, calculating a slip plane stability coefficient; S3, determination of a position of the gently-inclined soft interlayer plane: if the slip plane stability coefficient is less than 1 but close to 1, determining that the position of the slope slip plane is accurate; otherwise, moving the position of the soft interlayer plane and repeating steps S1 and S2, until the slip plane stability coefficient is less than 1 and close to 1. The method is simple, and has a high accuracy for determining a non-circular slip plane with a soft interlayer as a bottom slip plane.