The present invention provides a method for protecting a soil slope from rain erosion by improving with phosphogypsum and a microbe. The method includes: (1) placing Bacillus pasteurii in a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing a mixture, the microbial solution and water well, and adding the cementing solution and water to prepare an improving mixture slurry; and (3) spraying the improving mixture slurry to a face of the slope twice by wet spraying, mixing the improving mixture slurry with grass seeds well, spraying to the face of the slope once, covering with a non-woven fabric by tying and fixing to the slope, and watering every day.

The present invention provides a method for protecting a soil slope from rain erosion by improving with phosphogypsum and a microbe. The method includes: (1) placing Bacillus pasteurii in a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing a mixture, the microbial solution and water well, and adding the cementing solution and water to prepare an improving mixture slurry; and (3) spraying the improving mixture slurry to a face of the slope twice by wet spraying, mixing the improving mixture slurry with grass seeds well, spraying to the face of the slope once, covering with a non-woven fabric by tying and fixing to the slope, and watering every day.

The present invention provides a multi-layer barrier assembly or device for post-installation injection of a resin, grout, or other fluid. The barrier device comprises first and second layers defining an intermediate open-matrix layer, and at least one injection conduit member in parallel orientation with respect to the first and second layers and having openings for injecting fluid into the intermediate open-matrix layer. The injection conduit may be located between and in parallel orientation with respect to the first and second layers, along an edge of the first and/or second layers, along an outer face of the first layer (if the first layer is a woven or nonwoven fabric), or at any combination of these locations, to enable fluid to be conveyed into the intermediate open-matrix layer. The invention also provides for use of a gel activator within the barrier device cavity, such as pre-installed on open-matrix structure which used for separating the first and second layers of the barrier device, such that a highly flowable injection fluid can be introduced into the device, and its gelation or hardening will be initiated or accelerated by the presence of the gel activator. This will allow for low power grout pumps to be used and facilitate the sealing of fine cracks in the surrounding concrete.

An erosion control system is disclosed for preventing erosion of embankments including a three-dimensional material, the three-dimensional material including void volumes, and a mixture including a particulate material and a binder material included in the void volumes, wherein the binder material includes an organic binder material derived from living matter.

The present invention provides a construction method for ecologically protecting an expansive soil slope by combining phosphogypsum with microbial mineralization. The method includes: (1) placing Bacillus pasteurii in a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) preparing a mixture with phosphogypsum fly ash and soil; mixing the mixture, the microbial solution and water well, and adding the cementing solution and water to prepare an improving mixture slurry; and (3) spraying the improving mixture slurry to a face of the slope by wet spraying, and covering with a non-woven fabric by tying and fixing.

A vegetation partition wire mesh, for use in the vicinity of shores, coasts or roads, includes an outer wire mesh formed by upwardly bending left and right ends of a planar wire mesh, first partition wire meshes formed by upwardly bending front and rear ends of the planar wire mesh, and inner barriers. The first partition wire meshes are fixed inside the outer wire mesh while forming outer walls at front and rear ends thereof. Outer wire mesh nonwoven fabric along the inner surface of the outer wire mesh covers the outer wire mesh. A first partitioning nonwoven fabric along inner surfaces of the upwardly bent portions of the first partition wire meshes covers the upwardly bent portions of the first partition wire meshes. A mixture of soil and seeds is spread at high pressure to fill the inside of the outer wire mesh divided into a plurality of spaces.

The present invention provides a multi-layer barrier assembly or device for post-installation injection of a resin, grout, or other fluid fluid. The barrier device comprises first and second layers defining an intermediate open-matrix layer, and at least one injection conduit member in parallel orientation with respect to the first and second layers and having openings for injecting fluid into the intermediate open-matrix layer. The injection conduit may be located between and in parallel orientation with respect to the first and second layers, along an edge of the first and/or second layers, along an outer face of the first layer (if the first layer is a woven or nonwoven fabric), or at any combination of these locations, to enable fluid to be conveyed into the intermediate open-matrix layer. The invention also provides for use of a gel activator within the barrier device cavity, such as pre-installed on open-matrix structure which used for separating the first and second layers of the barrier device, such that a highly flowable injection fluid can be introduced into the device, and its gelation or hardening will be initiated or accelerated by the presence of the gel activator. This will allow for low power grout pumps to be used and facilitate the sealing of fine cracks in the surrounding concrete.

Disclosed are exemplary embodiments of sediment/erosion/perimeter control devices and methods of making and using the same. In exemplary embodiments, a sediment/erosion/perimeter control device (e.g., a wattle, etc.) comprises a material configured such that the sediment/erosion/perimeter control device is reconfigurable between at least a first configuration and a second configuration. In the first configuration, the sediment/erosion/perimeter control device has a first size, shape, volume, and/or weight. In the second configuration, the sediment/erosion/perimeter control device has a second size, shape, volume, and/or weight substantially larger than the corresponding first size, shape, volume, and/or weight that the sediment/erosion/perimeter control device has in the first configuration.

Disclosed are exemplary embodiments of sediment/erosion/perimeter control devices and methods of making and using the same. In exemplary embodiments, a system comprises a convertible silt fence/scour pad and a wattle. The wattle is integrated with the convertible silt fence/scour pad such that the convertible silt fence/scour pad and the wattle are an integrated, singular, or unitary product. The convertible silt fence/scour pad is deployable in at least a first orientation and a second orientation. In the first orientation, the convertible silt fence/scour pad is generally vertical and/or generally perpendicular relative to the ground or other surface supporting the wattle, whereby the convertible silt fence/scour pad is operable primarily as a silt fence. In the second orientation, the convertible silt fence/scour pad is generally horizontal and/or generally parallel relative to the ground or other surface supporting the wattle, whereby the convertible silt fence/scour pad is operable primarily as a scour pad.

A system for assisting and improving the installation of playground equipment and related components, the system includes a life-size layout templates and a methodology for installation of foundations and other structures. The system tarp has holes at strategic locations which can be laid on the ground for marking the ground at each of the holes for foundations of the equipment and components of the equipment. For footing and foundation layouts, the required footings dimensions can be printed on life size/to scale tarps or fabric which can be laid out in the installation area and positioned to the exact needed use zone or placement of the site. After the position has been confirmed the footings can be cut to the appropriate footing size and excavated, giving a clean/dry work area and can be left to remain on the ground as a weed/vegetation barrier.