3results about How to "Does not affect construction" patented technology

The application discloses a pre-splitting anchor injection deformation control structure and method for high ground pressure rock roadway excavation, which comprises a roadway penetrating in a rock mass, two pre-splitting rock zones symmetrically arranged on the two sides below the roadway, the pre-splitting rock zones being arranged along the length of the roadway, the pre-splitting rock zone being a rock zone full of gravel and densely distributed cracks, the side wall surface of the roadway being sequentially provided with a concrete wall protection layer and a concrete anchor spraying layer, and a plurality of high-strength anchor rods, a lower arch part anchor cable, a high-pressure grouting anchor cable and an arch nest reinforcing grouting anchor cable being perpendicularly arranged in the inner wall of the roadway and extending into the rock mass, the application combines roadway support reinforcement and roadway blasting pressure relief two roadway reinforcement means, the pre-splitting rock zone is advanced along with the advancing face construction in the construction process, the influence of pre-splitting rock zone construction on support is avoided, the design of the arch nest reinforcing grouting anchor cable can secondarily reinforce the integrity and effectiveness of the roadway support system, and the method can make the roadway omit conventional steel support and other measures.

The utility model discloses a snapping type pre-embedded wall connecting piece which comprises a bottom plate, a threaded conical rod, a shear force rod, a steel pipe fitting and a nut, one end of the threaded conical rod is a conical column body with the diameter gradually increasing, and the other end of the threaded conical rod is a screw rod with the diameter smaller than the maximum diameter of the threaded conical rod. The wall connecting piece is simple and small in structure, not prone to being lost, low in cost, convenient to install, easy to pre-embed and free of influence on follow-up wall construction, the wall connecting piece of a metal structure can bear strong impact and vibration, and the wall connecting piece of the metal structure can be used for connecting the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure. The conical structure does not need to be provided with a protective sleeve, direct strong drawing is carried out, so that the shearing force of the shearing force rod can be recycled after being damaged and broken, the consumable cost is greatly reduced, the drawing resistance not smaller than the sliding resistance of the fastener can be met by reasonably designing the size, the installation depth is small, the use function of reinforced concrete is not affected, and repairing is easy.

The utility model discloses a kind of copper water stop protection devices of rock-fill dam, including multiple mounting seats and protective cover, each the mounting seat is supported on the dam face of rock-fill dam, and all be located on the side of copper water stop on dam face, each the mounting seat is arranged along the gradient direction of dam face with interval, the uppermost mounting seat is fixed on the top surface of rock-fill dam, each the protective cover is respectively installed on adjacent mounting seat, and each the protective cover is sequentially arranged along the gradient direction of dam face, and cover and set in the upper of copper water stop.This rock-fill dam copper water stop protection device does not damage the dam face structure of rock-fill dam, does not affect pouring concrete construction and dismounting convenient of other side of copper water stop.