32results about How to "Reduce spoil" patented technology

The invention discloses a red bed mudstone filled-up express railway subgrade and construction method thereof. The subgrade consists of a red bed mudstone filling layer (3), a subgrade bed (2) and a track concrete foundation (1) which are filled on a subgrade base (4) in sequence, wherein, a cross section of the subgrade is of rectangle, the surface of the subgrade adopts a fully-closed water-proof structure (5), a slope of the subgrade is provided with a slope protection structure (6) and strengthened by a slope strengthening structure (11), a waterproof and drainage cushion (7) is arranged between the subgrade base (4) and the bottom surface of the red bed mudstone filling layer (3). The subgrade has the characteristics of high strength, small deformation, good stability and durability,economy, etc., and can fulfill the requirements of high smoothness, stability and durability of ballastless tracks to lines. The construction method is of simple craftwork, reasonable technology, andeasy control of filling quality; cost used for purchasing and transporting high-quality fillers can be greatly saved, waste soils caused when the subgrade is filled can be reduced, environment is protected. The invention has important economic and social benefits.

The invention relates to a ball-anchor-upper plate foundation, which comprises an upper plate embedded in the soil foundation and whose upper surface is flush with the ground, one or more anchor bars, backing plates and anchors matched with the anchor bars plate. The upper plate is polygonal, with an anchor hole I in the center; an anchor hole III in the center of the backing plate; the anchor includes a rod body and several support rods; the lower part of the rod body is provided with a steel circular horizontal plate, the circle A plurality of hinge supports for the hinge connection of several poles and the circular horizontal plate are distributed around the rod body on the shaped horizontal plate; water-resistant explosives equipped with detonators are arranged around the rod body on the circular horizontal plate, and several support rods Turn over to the upper end of the rod body and bind it around the water-resistant explosive; the bottom end of the anchor rod and several support rods are anchored, and the top ends pass through the anchor rod hole I at the corresponding position on the upper plate and through the anchor rod hole on the backing plate Ⅲ is connected with the anchor plate. The invention also discloses a construction method of the foundation. The invention has simple structure, significantly saves investment and reduces spoil.

The invention relates to a soil foundation star-shaped arm end multi-cable anti-uplift foundation. The soil foundation star-shaped arm end multi-cable anti-uplift foundation comprises a star-shaped component, a plurality of beard and hair anchor rods, base plates and anchor plates, wherein the star-shaped component is embedded into a soil foundation and the upper surface of the star-shaped component is higher than the ground; and the base plates and the anchor plates are matched with the beard and hair anchor rods. The star-shaped component is provided with a plurality of extended arms which extend out in the radial direction. The outer end of each extended arm is provided with an anchor rod hole I. The center of each base plate is provided with an anchor rod hole II. The bottom ends of the multiple beard and hair anchor rods are all anchored, and the top ends of the beard and hair anchor rods penetrate through the anchor rod holes I of the star-shaped component and the anchor rod holes II of the base plates to be connected together with the corresponding anchor plates. The beard and hair anchor rods are composed of tension thin wires. Water-resistant explosives filled with detonators are bundled on the lower portions of the corresponding tension thin wires, and the tension thin wires are evenly distributed on the peripheries of the water-resistant explosives filled with the detonators in the perimeter direction. The invention further discloses a construction method of the soil foundation star-shaped arm end multi-cable anti-uplift foundation. According to the soil foundation star-shaped arm end multi-cable anti-uplift foundation and the construction method thereof, the structure is simple, investment is reduced and waste soil is also reduced.

The invention discloses a novel hole-forming and pile-forming device and a construction method thereof. According to the invention, two entirely different devices and technologies are integrated into a new mechanical device and construction technology, hole forming without earth taking can be realized, hole collapse and hole shrinkage before pile forming can be effectively avoided, and the continuous construction operations of vibrating pipe-sinking hole forming and rotating mesh cylinder forming can be well realized, the pile-forming quality and the construction efficiency are remarkably improved, the steps and costs of earth abandoning, outward transporting, land occupation and the like are effectively omitted, economic and social comprehensive benefits are remarkably improved, and a new idea entirely different from conventional devices and construction technologies is provided.

The invention discloses a method for repeated grouting of an anchor foundation full section of a power transmission line tower site group, comprising the steps of: firstly, arranging anchor rods in foundation pits around a grouting hole, then arranging a grouting input tube in the grouting hole, firmly sealing the mouth of the grouting hole with concrete and simultaneously and firmly sealing a grouting guide tube end socket and a grout return tube, and starting carrying out primary grouting into the grouting input tube after a concrete coagulating period; when grout return starts in the groutreturn tube in the grouting process, adding cement into a grout return pool to regulate the concentration of cement slurry when grout is diluted, controlling the concentration of the grout and closing a grout return control valve; and when the grouting pressure ceaselessly reaches a pressure value as required, stopping grouting, repeating the steps for secondary grouting after 1-2 days till the whole grouting process is completed. The movable grouting input tube can be repeatedly used in the grouting hole in a vertical moving way so as to ensure the successful performing of the repeated grouting and ensure that the grout is uniformly radiated to rock stratums around the hole through pressure, and thus, the hardness of the surrounding rock stratums and the capabilities of the anchor foundation on resisting pressure, pulling and levelness are improved.