40results about How to "Reduce the risk of landslides" patented technology

The invention discloses a high embankment slope stabilizing structure. The high embankment slope stabilizing structure comprises a retaining wall, steel pipe piles and anchor rods; the retaining wallis arranged at the foot of a high embankment slope, concrete-filled steel pipe piles are arranged on the inner surface of the retaining wall, an excavation step and a gravel drainage zone are arrangedat a filling and excavation interface, the bottoms of the concrete-filled steel pipe piles and the steel pipe piles penetrate through the gravel drainage zone, and the upper sections of the steel tube piles are sleeved with grouting sleeves correspondingly; the lower end of the grouting sleeves extend to the gravel drainage zone, the upper end of each grouting sleeve is connected with a groutingopening through a grouting pipe, a fixed pulley and a pipeline channel are arranged inside each concrete-filled steel pipe pile, the anchor rods are is fixed in a rock stratum behind the excavation step, the exposed parts of the tops of the anchor rods are connected with steel strands, and the steel strands are connected to the fixed pulleys or the steel pipe piles at the same height; the steel strands connected to the fixed pulleys are led out of crown beam through the pipeline channel and connected with a steel strand tensioning device. The high embankment slope stabilizing structure is suitable for reinforcing and active control of embankment deformation in the embankment construction and operation process, and is particularly suitable for embankment projects with high requirements forembankment stability and later operation safety.

The invention discloses an automatic rod feeding device for a mine anchor rod drilling machine. The device comprises an anchor rod storing mechanism, a first manipulator, a second manipulator and a fixing seat. According to the device, an anchor rod is stored into semicircular grooves in an upper index plate and a lower index plate through the anchor rod storing mechanism; the anchor rod is grasped, conveyed and positioned through the first manipulator and the second manipulator; therefore, automatic conveying of the anchor rod is achieved; the replacing efficiency of the anchor rod and a drilling rod can be increased; the time of supporting the tunnel is reduced; the risk of collapse of the tunnel is reduced.

The invention discloses a tunnel digging-out supporting structure and a construction method thereof. The supporting structure includes upper steps and lower steps. The upper steps and the lower stepsare arranged on the entrance of a tunnel, a connecting slope is connected between the upper steps and the lower steps, small pilot tunnels are formed in the upper steps, the supporting structure further includes a temporary support, an advanced support, a system anchor rod, a foot-locking anchor rod and a preliminary support, the temporary support is arranged around the small pilot tunnels, the advanced support, the system anchor rod, the foot-locking anchor rod and the preliminary support are used for reinforcing surrounding rock around the tunnel, the supporting structure and also includes alarge pipe shed guiding wall and a large pipe shed, and after the small pilot tunnels are dug out, the small pilot tunnels are out, the large pipe shed guiding wall and the large pipe shed are constructed from outside to inside in the entrance of the tunnel; according to the construction method, benching stepping method is adopted to construct adjacent entrance sections; the advanced small pilottunnels are excavated on one side of the upper steps, the advanced support, the system anchor rod, the foot-locking anchor rod, the preliminary support and the temporary support are constructed, and the small pilot tunnels pass through to the entrance of the tunnel; the large pipe shed wall is constructed, holes are drilled in the large pipe shed wall, and the large pipe shed advanced support is provided; and the small pilot tunnels on the other side of the upper steps of the support are excavated from the holes to the entrance, the temporary support of the small pilot tunnels is dismantled, the lower steps of the support are excavated to the entrance.

The invention discloses an anti-skid drill cast-in-place pile foundation in a high-sensitivity soft soil area and a construction method thereof. The anti-skid drill cast-in-place pile foundation comprises novel steel protecting cylinders, a steel protecting cylinder installing device and a drill cast-in-place pile main body. The drill cast-in-place pile main body comprises common steel protectingcylinders, a steel reinforcement cage and concrete. All the novel steel protecting cylinders and all the common steel protecting cylinders are sequentially connected in a sealed manner from bottom totop. The steel protecting cylinder installing device comprises a suction barrel and a magnetic installing ejection cap. According to the anti-skid drill cast-in-place pile foundation, the novel steelprotecting cylinders with automatic hole pressure adjusting systems are adopted, and thus during the operation stage of the anti-skid drill cast-in-place pile foundation in the high-sensitivity soft soil area, hole water pressure in a periphery soil body of the pile foundation can be adjusted automatically. The suction barrel technology is adopted for installing the steel protecting cylinders, itis ensured that in the construction process, the soil body on the periphery of an anti-skid drill cast-in-place pile is reduced as much as possible, and the liquefaction risk of the soil body on the periphery of the pile foundation during the construction period is effectively reduced. The construction method is safe, reliable, convenient and rapid, and has a wide project application prospect.

The invention discloses a red bed sand shale tunnel large deformation section construction method to effectively avoid large deformation and collapse during the construction period, lower the construction period delaying risk and improve the construction efficiency. According to the monitoring measurement condition and the deformation condition of the constructed section, the large deformation section is tested, the reserved deformation is enlarged, and the support parameter is adjusted to reinforce preliminary bracing; the rise span ratio of an excavated section is adjusted according to crownsettlement, horizontal displacement and inverted arch deformation condition, and the excavated section of the large deformation section is determined; the rise span ratio is adjusted to be about 0.5;when the horizontal displacement value is larger, the crown settlement value is smaller relative to the horizontal displacement value and inverted arch deformation is not generated, the excavated section of the large deformation section is determined to be semi-circular; and when the crown settlement value, horizontal displacement value and inverted arch deformation upheaval value are larger, theexcavated section of the large deformation section is determined to be circular.

The invention discloses a swelling rock deep excavation cut slope supporting structure and supporting method. The supporting structure comprises at least one lower plain stage of slope, at least one upper plain stage of slope, a middle plain stage of slope, slide-resistant piles and slope toe pile slab walls. The supporting structure is applicable to a swelling soil (rock) deep excavation cut slope (the height of the cut slope generally exceeds 15m). The slope supporting method particularly includes the steps of 'arranging the pile slab walls at slope toes for reinforcing, arranging a gentle slope, arranging an anchor rod (rope) frame beam support, arranging a party ledge in the middle of the slope and arranging the slide-resistant piles on the party ledge, so that collapse risk in the construction and operation process of the swelling soil (rock) deep excavation cut slope is effectively reduced, and stability of the swelling soil (rock) deep excavation cut slope is ensured.

The invention provides an ecological protection and restoration landslide drainage system which comprises a slope body and further comprises a protection structure arranged on the slope body, and the protection structure comprises a cement protection frame laid on the surface of the slope body and an anchoring part arranged in the slope body. The anchoring part comprises a columnar body, a drainage channel formed in the columnar body and a water permeable hole formed in the columnar body and communicated with the drainage channel, the end of the columnar body and the protection frame are integrally arranged, the end, connected with the cement protection frame, of the drainage channel is communicated with the outside, and the end, connected with the cement protection frame, of the drainage channel is communicated with the outside. The anchoring part is arranged in the slope body, the cement protection frame and the anchoring part are integrally arranged, the strength of the cement protection frame is improved, slipping of the cement protection frame is avoided, the drainage channel is formed in the anchoring part, and the water permeable holes are formed in the side wall, so that water in the slope body can flow into the drainage channel through the water permeable holes in time and flow out along with the drainage channel; and the risk of landslide is reduced.

The invention discloses a novel reinforcing method for an underground comprehensive pipe gallery slope. The foundation pit slope of the pipe gallery is reinforced by using a combination way of waste tires, short nails and waterproof geotextiles, and the construction steps comprise the followings in sequence, slope processing, waterproof geotextile laying, waste tire laying and short nail nailing.The novel reinforcing method for the underground comprehensive pipe gallery slope is applied in supporting and reinforcing of the underground comprehensive pipe gallery slope, the supporting cost of the foundation pit can be greatly reduced under the premise of satisfying the construction needs, the waste tires, the short nails, and the waterproof geotextiles can be reused and recycled, and energysaving and environmental protection are achieved.

The invention provides a reinforced composite geotechnical cushion capable of preventing the capillary barrier effect and a manufacturing method thereof. The composite geotechnical cushion is formed by sandwiching a gravel and hemp thread layer, a hot-melt plastic wire layer and a reinforced grating layer. The reinforced composite geotechnical cushion is used in the side slope embankment filling anti-sliding reinforcement project and is particularly suitable for a side slope embankment filling project in a region with more rainwater in the south, the capillary barrier effect of infiltration rainwater at the reinforced layer can be remarkably reduced or eliminated, the infiltration speed of the rainwater can be increased, the seepage along the slope surface can be reduced, and the infiltration damage of soil mass can be avoided; and meanwhile, the composite geotechnical cushion can also improve the anti-sliding performance of the side slope soil mass and reduce the risk of landslide.

The invention discloses a pile-soil combined action supporting device and a construction method thereof. The supporting device comprises cast-in-situ bored piles and steel plates which are connected with each other, wherein H-shaped steel is arranged in each cast-in-situ bored pile; through holes are formed in each steel plate; and the bottom surfaces of the cast-in-situ bored piles and the steelplates are lower than a slip crack surface of a side slope. The construction method comprises the following steps of 1, trimming the slope surface of the side slope, positioning drill holes, performing cleaning, and enabling two adjacent drill holes not to collapse; 2, inserting the H-shaped steel in a position between every two adjacent drill holes; 3, driving the steel plates into soil along clamping grooves at the two sides of the H-shaped steel, and maintaining the perpendicularity of the H-shaped steel and the steel plates; and 4, pouring concrete into the drill holes, performing curing to form the cast-in-situ bored piles, and completing the construction of the supporting device. The pile-soil combined action supporting device and the construction method provided by the invention have the advantages that the pile-soil combined action is considered; through the arc-shaped steel plates and the reasonable pile space, a soil arch effect is formed; the shear strength of the soil bodyis utilized to resist external force; the consumption of the piles is reduced; resources are saved; and the workload is reduced.

The invention provides a breathable super absorbent polymer (sap) coating composite material for preventing slope surface infiltration and a manufacturing method thereof. The sap coating composite material is sandwiched by a sap coating honeycomb grille, a three-dimensional partition layer, and a reinforced permeable layer, the sap coating composite material is used in slope embankment filling surface waterproofing engineering and is particularly suitable for slope embankment filling engineering in areas with more rain in the south, seepage failure caused by infiltration of rainwater to the slope embankment can be significantly reduced or eliminated, drainage of rainwater from the surface of the slope embankment is accelerated, seepage flowing down the slope surface is reduced, soil body seepage damage is avoided, when the weather is fine, the sap coating composite material can shrink so that honeycomb ventilation holes are opened, and excessive moisture in the slope embankment is drained; and at the same time, according to the sap coating composite material, the anti-sliding performance of the slope soil body can be further improved, and the risk of landslides is lowered.

The invention discloses an anti-slide pile for preventing and treating underwater soft soil slope landslide caused by earthquakes, and a construction method. The anti-slide pile is used for preventingand treating sudden flowing landslide and progressive flowing landslide of an easily-liquefied soft soil slope on a river alluvial plain, a river estuary and a continental shelf. A steel casing withan automatic liquefaction preventing and treating system is adopted, the pore water pressure in a peripheral soil body of the anti-slide pile can be autonomously adjusted in the anti-slide pile foundation construction and operation stage of an easily-liquefied soft soil area, the risk of underwater easily-liquefied soft soil slope landslide is effectively reduced, and the engineering safety of theanti-slide pile and the upper structure of the anti-slide pile is guaranteed; and aiming at the situation that underwater soft soil is seriously liquefied and damaged due to strong earthquakes, onlyreduction of the pore water pressure in the underwater soft soil around the anti-slide pile cannot deal with too fast pile top settlement development or too large settlement amount of the anti-slide pile, the underwater easily-liquefied soft soil slope is fully reinforced by injecting concrete grout, and underwater soft soil slope landslide and anti-slide pile foundation damage are comprehensivelyand deeply treated.