346 results about "Geocells" patented technology

A geocell is disclosed that has high strength and stiffness, such that the geocell has a storage modulus of 500 MPa or greater at 23° C.; a storage modulus of 150 MPa or greater at 63° C. when measured in the machine direction using Dynamic Mechanical Analysis (DMA) at a frequency of 1 Hz; a tensile stress at 12% strain of 14.5 MPa or greater at 23° C.; a coefficient of thermal expansion of 120×10⁻⁶/° C. or less at 25° C.; and/or a long term design stress of 2.6 MPa or greater. The geocell is suitable for load support applications, especially for reinforcing base courses and/or subbases of roads, pavement, storage areas, and railways.

A geocell for retaining infill in geotechnical structure, e.g. a protection construction on an unstable slope in mountainous areas, construction foundation, and green-making with plants, consists of several plastic plates; every two adjacent plastic plates are connected together at several spaced apart elongated joints by means of ultrasonic welding, each of which elongate joints includes several aligned points; thus, the geocell can be expanded into a honeycomb shape, and cells are formed therein for containing backfill therein; the plastic plates are formed with rough finishes so as to increase the backfill retaining capability of the present geocell.

A composite system comprises a base layer, a capping layer, and at least one core geocell layer. The base layer and capping layer are stacked below and above the core geocell layer, which is infilled with a low quality material. In specific embodiments, the base layer and capping layer are each geocells infilled with a high quality material. This composite system meets engineering specifications economically.

A large scale geotextile tube includes a plurality of shelves that extend across the width of the geotextile tube with each shelf formed of a web of geogrid material or geocell material. As one moves from the bottom of the geotextile tube to the top of the geotextile tube, the width of each shelf decreases. The geotextile tube can be surrounded by an envelope formed of geogrid material.

A geocell for retaining infill in geotechnical structure, e.g. a protection construction on an unstable slope in mountainous areas, construction foundation, and green-making with plants, consists of several plastic plates; every two adjacent plastic plates are connected together at several spaced apart elongated joints by means of ultrasonic welding, each of which elongate joints includes several aligned points; thus, the geocell can be expanded into a honeycomb shape, and cells are formed therein for containing backfill therein; the plastic plates are formed with rough finishes so as to increase the backfill retaining capability of the present geocell.

The method for creating vegetation on rock slope land by waste and old tyres includes the following steps: finishing slope surface, laying waste and old tyres on the slope surface and fixing them, according to the requirements of plant growth preparing nutrients oil and planting soil or seived natural soil, filling the soil into the tyre bead, sowing suffurticosa plant and others, uniformly spraying fertilizer, stabilizing agent and covering material on the slope soil and covering with sun shading net.

The invention discloses a plant-growing meshwork carpet for slope restoration and a slope restoration method. The plant-growing meshwork carpet comprises a fine grid linen net surface layer, a seed layer, a coconut net geotechnical grid chamber and a fine grid linen net bottom layer; plant-growing matrix fills in the coconut net geotechnical grid chamber; all parts are fixed into a carpet-shaped coil through degradable fibers. The plant-growing meshwork carpet is high in flexibility, and can be bent at random to be adapted to various uneven slopes; the seed layer can be collocated at random as requirement, the rooting and sprouting effects are good, the slope entironment can be improved within a short period, the ecological benefits are increased, and moreover, the benefiting period is long; the manufacturing cost is low, the materials are easily obtained, the maintaining cost is low, and thus the economic benefit is obvious, and a good landscaping effect is achieved.

The invention discloses a soft soil foundation two-way reinforcement and drainage reinforcement method for highways. The invention comprises the steps as follows: (1) the site is leveled and the pile positions are set out; (2) the construction is carried out by vibroflotation, hammering method, or vibrating tube sinking method to form a gravel pile; (3) the top of the pile is paved with Geocell coarse sand or gravel hardcore, the main composition body thereof is a Geocell layer with drain holes on the wall, the Geocell is filled with compact coarse sand or gravels, and the upper part and the lower part of the Geocell are respectively paved with drainage layers. By adopting the Geocell coarse sand or gravel hardcore and gravel pile two-way reinforcement and drainage structure, the method can realize a composite action of reinforcement, compaction, replacement and drainage on the soft foundation, effectively improve the strength and stability of the roadbed, reduce the differential settlement of the foundation and satisfy the requirement of traffic load increase on the bearing capacity and deformation of the roadbed.

A geocell is disclosed that has high strength and stiffness, such that the geocell has a storage modulus of 500 MPa or greater at 23 DEG C; a storage modulus of 150 MPa or greater at 630C when measured in the machine direction using Dynamic Mechanical Analysis (DMA) at a frequency of 1 Hz; a tensile stress at 12% strain of 14.5 MPa or greater at 230C; a coefficient of thermal expansion of 120 x 10'6 /0C or less at 250C, and/or a long term design stress of 2.6 MPa or greater. The geocell is suitable for load support applications, especially for reinforcing base courses and/or subbases of roads, pavement, storage areas, and railways.

The invention discloses a mine landform treatment method based on waste stone and relates to the technical field of mine treatment. The mine landform treatment method comprises the steps of terrain surveying, mine clearing, area division, mine backfill, stabilizing and pouring for reinforcing, vegetation restoration, reservoir construction, rainwater drainage, recording and maintenance. The landform of a waste mine is surveyed, areas of the mine are effectively divided, the landform of the mine is leveled by fully utilizing the waste stone, the ecological environment of the mine is improved through geocells, hanging net soil dressing or plant growth pots, the situations that mine rock is bare, geology is instable, and danger is prone to occurring are effectively changed, and certain economic benefits can be generated.

The invention discloses a method for constructing a two-way reinforced composite foundation of a geocell reinforced bed course and a sand pile, which comprises the following steps: clearing a field and a fixed-point pile, constructing a vibrating sinking pipe sand gravel pile, paving and rolling a pile top gravel layer, tensioning the geocell, filling and rolling gravels in the geocell, and paving and rolling a geocell sand and gravel layer. The method is characterized in that the geocell reinforced bed course with transverse drainage function is constructed into a converse V-shaped conical slope which is easy for water drainage; the geocell should be expanded along the direction of a highway route and gradually pushes in filling sandstones to be rolled compactively so that a sheet material is vertical to route direction; and the pipe drawing speed and the height linearity from the shallow part to the deep part of the same soil layer are reduced gradually in the construction process of the vibrating sinking pipe sand gravel pile. The method has the advantages that the method can ensure the smoothness of transverse water drainage, increase the compactness of the geocell bed course and the ability to resist deformation, prevent that the pile body has a larger upper part and a small lower part, and improve the piling quality.

The invention discloses a technique for processing a geocell, and relates to a technique for processing an anticorrosive geocell. The technique comprises the following steps of: folding a ground strip, and connecting adjacent folded ground strips in a staggered way at intervals through a plurality of connecting buckles, wherein the connected geocell is honeycomb-shaped after being transversely stretched, and the process of connecting the adjacent ground strips in a staggered way at intervals comprises perforation of the connecting parts of the adjacent ground strips; and performing mechanical injection processing on the connecting parts of the adjacent ground strips to form a connecting buckle connected with the ground strips to form a whole. The integrated injection connecting buckle is processed at the connecting parts by using an injection molding process. Compared with the prior art, the connecting buckle is anticorrosive; and the operation strength during processing is also greatly reduced, the processing period is shortened, and the processing efficiency is improved. All plastic materials are light and abrasion-resistant, have stable chemical performance, photo-oxidation aging resistance and acid and alkali resistance, and are suitable for high-strength geocell products under different soil conditions of soil, deserts and the like.

The invention discloses a working platform for rapidly reinforcing a hydraulic reclamation super-soft soil foundation and a construction method. A bearing platform is formed by a piece of plastic woven cloth, an earthwork standard room and sand, the plastic woven cloth is paved on the surface of the super-soft soil foundation, the earthwork standard room is paved on the plastic woven cloth, and holes in the middle of the earthwork standard room are filled with the sand. Small holes are drilled in sheets of the earthwork standard room in advance so as to improve the capacity of horizontal drainage. The method for reinforcing the soft soil foundation by a construction platform for the hydraulic reclamation super-soft soil foundation disclosed by the invention comprises the technical steps of paving the plastic woven cloth and the earthwork standard room, paving a sand cushion, connecting horizontal drainage pipes, paving geotechnical cloth and a vacuum film, carrying out vacuum preloading and the like. The working platform solves the technical problem that people and construction machinery cannot walk freely on the super-soft soil foundation; moreover, the method is simple and convenient in operation, obvious in treatment effect and low in cost, and is an economical and practical soft soil foundation treatment method.

The invention relates to a method for repairing geocells and side slopes. Each geocell comprises at least two bent earth stripes which stick to each other, wherein at least two rows of through holes are formed in the middle part of each soil stripe; joints of the soil stripes stick to one another to form a fixed hole perpendicular to the ground; an anchor rod nailed into the soil is arranged in the fixed hole; binding holes perpendicular to the soil stripes are formed in the soil stripes on two sides of the anchor rod; solder wires used for foxing the soil strips and the anchor are formed in the binding holes. By virtue of the geocells, root systems of plants can be effectively communicated with one another among the geocells; all independent geocells are combined to be a whole body by the root systems, so that a good reinforcing function is achieved; furthermore, the connection manner of the soil strips is changed, so that the geocells are fixed by the anchor rod; by virtue of the cooperation of the geocells and an improved construction method, the problem of side slopes formed due to soil wind erosion caused by insufficient vegetation coverage or dry grass periods can be solved.

The invention relates to a construction method for connecting a new subgrade and an old subgrade. The construction method comprises the following steps that excavation is conducted on the position of a side slope of the old subgrade to form a step side slope; an earthwork standard room is laid on the ground surface of the new subgrade, and the end portion of the earthwork standard room butts against the edge of the step side slope and is fixed; the earthwork standard room is filled with plain soil and the plain soil is flattened to form a plain soil layer; layered filling and lamination are conducted on the plain soil layer to form a lower part roadbed which is connected with the step side slope; a two-way geo-grid is laid on the lower part roadbed; layered filling and lamination are conducted on the geo-grid to form an upper part roadbed which is connected with the step side slope; and a pavement layer connected with the step side slope is constructed on the upper part roadbed. The earthwork standard room and the geo-grid are combined, so that the integrality of the new subgrade and the old subgrade is enhanced, the differential settlement can be reduced, and the quality of a highway is ensured.

The invention provides a management method of rocky land degradation. Geotextiles and geocells are utilized in a composite mode and accordingly the geotextiles and the geocells can be directly applied to the soil and water conservation of the rocky desertification area so as to create conditions for the large area of afforestation and vegetation is planted in the geocells to rebuild an ecological system so as to solidify stone and conserve water from the source and prevent the expansion of the desertification. According to the management method of the rocky land degradation, the good effect on the management in the rocky desertification area can be achieved through once implementation, the soil and water conservation can be effectively achieved, the conditions required by the vegetation and protection forest growth can be effectively improved, vast rock desert resources in China can be effectively utilized, and the rocky desertification land management cost is saved.

The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.

The invention discloses an ecological cement and geocell combination slope protection technology. The ecological cement and geocell combination slope protection technology is characterized by comprising steps of (1), leveling a slope surface; (2), arranging a main drainage ditch system; (3), positioning, laying and anchoring geocells; (4), manufacturing and jetting ecological cement; (5) performing later-period maintenance and management. The ecological cement and geocell combination slope protection technology has the advantages that a slope can be protected and reinforced under mutual effects of rock and earth mass (anchoring effects of root systems) to the greatest extent on the premise that requirements on the stability of the bank slope of a river and flood control and drainage functions of the river are met, the ecological cement and geocell combination slope protection technology is economical and practical, the construction difficulty can be reduced, the construction time can be shortened, landscape of the bank slope of the river can be optimized, and damaged natural ecological environments can be rehabilitated; impact of water flow can be effectively resisted owing to high strength and stability, and accordingly the ecological cement and geocell combination slope protection technology has high application potential in protection for embankments of rivers.

The invention relates to a rock cutting slope ecological protection structure and a construction method thereof. The rock cutting slope ecological protection structure comprises an anchoring layer, ageogrid layer, a three-dimensional net layer and a spraying layer which are fixedly arranged in sequence from a lower layer to a top layer, wherein the anchoring layer is anchored and fixed in the rock cutting slope, and the top of the anchoring layer is fixedly connected with the geogrid layer. The structure is characterized by filling planting soil in the geogrid layer, and fixedly laying the three-dimensional net layer on the top of the geogrid layer; and the spraying layer is sprayed on the net surface of the three-dimensional net layer. The construction method of the rock cutting slope ecological protection structure mainly comprises the following steps: measurement lofting -> slope surface finishing-> anchor rod drilling installation -> steel casing installation and internal pouring-> geogrid laying -> three-dimensional net laying -> (matrix layer, seed layer and microorganism layer) spraying construction -> maintenance. The scheme can effectively solve the problem of water andsoil loss caused by rainwater washing of the planting soil in an area with large annual average precipitation, and manual reseeding or soil supplement construction is not needed, so that the burden ofmanual maintenance is reduced.

The invention discloses a plastic geocell, which comprises bar plastic cell sheets and connecting clamps, wherein the cell sheets are arranged side by side; the connecting clamps are clamped on connecting parts of the cell sheets and are fixed with rivets; the cell sheets connected together form a grid-shaped three-dimensional cell; each cell unit of the grid-shaped three-dimensional cell is internally provided with a connecting rope; both ends of the connecting rope are connected with the connecting clamps respectively; and the bar cell sheets are provided with drain holes. The plastic geocell has the advantages of simple structure, easy manufacturing and low cost. The plastic geocell can be convenient for water to flow and drain the water in time, can also prevent soil and sand filled in the geocell from shifting, can improve the scouring resistance and the erosion resistance, can improve the stability, prolongs the service life, reduces maintenances and is convenient to popularize and use.