A method for ecological filling with mixed coal gangue and fly ash includes the following steps: S1: construction of a double-impermeable base layer: leveling a pit or gully, laying a fly ash-based cementitious material, compacting and curing; spraying a layer of polymer waterproof coating on a surface of the fly ash-based cementitious material, and fully curing to obtain a double-impermeable protective structure; S2: three-dimensional layered filling: dumping coal gangue and fly ash in sequence on the double-impermeable protective structure formed in S1, where the coal gangue and the fly ash are three-dimensionally layered and well graded; the coal gangue is coal gangue after coal washing, which is used as an aggregate; the fly ash is used as a filler and cementitious material to achieve a compact filling structure; and S3: rolling: rolling by a roller after the three-dimensional layered filling.

A footing plate (10) including a planar web (12) through or from which a plurality of tubes (14) pass, the tubes (14) being adjacent to the edges of the planar web (12) and being disposed at angles to the planar web (12), none of the angles being 90°, the tubes (14) being sized to permit the passage therethrough of pins (18) for fixing into underlying ground, the upper face of the planar web (12) optionally being provided with a plurality of holes to accept bolts for retaining means to receiving a post, pole or upright structural beam, the planar web (12) also being provided with a downwardly extending flange (16) from at least one of the edges of the planar web (12).

System for preventing the leakage of liquid from an outdoor work-site around the perimeter of the work-site includes a load-supporting surface having at least two adjacent mats and a plurality of berm members configured to be disposed around the perimeter of the load-supporting surface.

A method of detecting faults and ensuring integrity of membranes having magnetically functionalized particles, including moving a magnetometer over the membrane to measure at least one magnetic property, mapping the location of the measured properties, identifying anomalies among measured properties including the location of such anomalies, and repairing the membrane at the location where anomalies are identified.

A containment system including a wall member with a plurality of corrugations, each corrugation extending horizontally along a length of the wall member. Each of a multiplicity of the corrugations has openings therein, and at least some of the openings in the corrugations at least partially align to form an upright keyway through the wall member. The system further includes a bracket that has a plurality of corrugation-receiving spaces therein. The wall member is positioned with corrugations in respective corrugation-receiving spaces. The system also includes a locking member received in the upright keyway of the wall member and positioned such that interaction between the locking member and portions of the bracket prevent the wall member from being pulled away from the bracket.

Compressible fluid-impermeable berm devices that self-adhere to surfaces such as ground, pavement and floors are disclosed. The compressible containment berm devices include one or more compressible containment wall sections formed from a flexible shell and a compressible filler material. A pre-applied adhesive layer at least partially covers the underside of each compressible containment wall, and is used to adhere and seal the containment wall to the containment surface. Corner joints may be used to connect the compressible containment wall sections together to thereby form the berm devices with a closed perimeter that contains leaks and spills. The compressible fluid-permeable berm devices can be easily removed or repositioned after use leaving little or no adhesive residue.

The invention relates to a low-permeability geotechnical barrier material including a blend of approximately equal parts of: aggregate particles, sand-size particles and manufactured composite particles that include a hydratable sealant material composed of naturally-occurring clay minerals and/or polymer-enhanced clay minerals, such that the actual percentage of clay mineral component is less than 10% by weight in the blended material. In a particular embodiment, the construction of a low-permeability geotechnical barrier using predominantly coarse grain materials by conventional compaction efforts is rarely attempted due to the difficulty of maintaining a uniform mix of well-graded sand and aggregate blends necessary to achieve low permeability. The regularly achievable permeability offered by this material blend when installed with specific proscribed techniques using conventional equipment can be 5×10.sup.−8 cm/sec or lower.

A drying pad and a method for constructing a drying pad for a wet waste, of which the method includes adding a polymer additive to a soil to create a polymer-augmented soil, and spreading the polymer-augmented soil over a base soil to create drying pad comprising a polymer-augmented soil layer on top of the base soil. The polymer-augmented soil is configured to have the wet waste deposited thereon so that the wet waste dries on top of the polymer-augmented soil layer without leaching into the base soil and produces a dried waste for transfer to a disposal cell. The method also includes removing the polymer-augmented soil layer from the base soil after the dried waste is transferred to the disposal cell.

A footing plate (10) including a planar web (12) through or from which a plurality of tubes (14) pass, the tubes (14) being adjacent to the edges of the planar web (12) and being disposed at angles to the planar web (12), none of the angles being 90, the tubes (14) being sized to permit the passage therethrough of pins (18) for fixing into underlying ground, the upper face of the planar web (12) optionally being provided with a plurality of holes to accept bolts for retaining means to receiving a post, pole or upright structural beam, the planar web (12) also being provided with a downwardly extending flange (16) from at least one of the edges of the planar web (12).

Methods of containing liquid introduced onto a support surface include forming the support surface with at least two mats, the mats forming a perimeter of the support surface. A plurality of berm members is positioned at least partially around or proximate to the perimeter of the support surface and extends upwardly relative to the mats sufficient to prevent liquid introduced onto the top of the support surface from leaking off of the support surface around the perimeter thereof.