38results about How to "Effective deformation control" patented technology

The invention relates to the field of highway tunnel and railway tunnel surrounding rock supporting, in particular to a large cross-section tunnel supporting system construction method applicable to steep dip layered rock mass. The method is characterized in that when a forward inclination layer pilot tunnel and an upper part middle pilot tunnel are dug, a temporary support and first and second layer linings positioned in the positions of the forward inclination layer pilot tunnel and the upper part middle pilot tunnel are made; and when a backward inclination layer pilot tunnel and a lower part pilot tunnel are dug, a temporary support and a first layer lining positioned at the backward inclination layer pilot tunnel and the lower part pilot tunnel are made. The method has the advantages that by aiming at the steep dip layered rock mass tunnel digging damage features, the strength and the rigidity of top and arch part supporting structures are mainly reinforced; the strength and deformation characteristics of surrounding rock of tunnel top and layer exposure parts can be effectively enhanced; the deformation and the instability of the surrounding rock in the two weak positions are controlled; and the stability of the rock mass in the arch part or layer exposure parts is ensured.

The invention relates to a drawing experimental device capable of testing the performance of a grouting anchor cable under a water-containing condition. The device comprises an anchor cable drawing mechanism, wherein the anchor cable drawing mechanism comprises a steel cylinder component, and the steel cylinder component is used for grouting and fixing a anchor cable in the steel cylinder; a drawing instrument component is used for performing a drawing experiment on the anchor cable which is subjected to grouting and fixing in the steel cylinder; in addition, the drawing experimental device further comprises a clamping seat mechanism, an upper half heating cylinder and a lower half heating cylinder. When the device is used, the steel cylinder can be heated through the upper half heating cylinder and the lower half heating cylinder to simulate geothermal heat, and meanwhile, torsion and impact force can be applied to a filling cavity through the impact oil cylinder and the torque oil cylinder on the clamping seat mechanism respectively, so that rock burst is simulated. According to the method, the stress and deformation rules of the anchor cable and the function of the anchor cable structure parameters on improving the stability and the bearing capacity of a supporting structure under different load action forms and different water-containing conditions of the surrounding rock can be analyzed by researching the interaction process of the anchor cable and the grouting surrounding rock, so that the optimal anchor cable supporting parameters and grouting time under different surrounding rock conditions can be obtained.

The invention provides a remote sensor damping and vibration-isolation device improved based on a bi-pod supporting mode, and relates to the technical field of optical remote sensing vibration isolation. The remote sensor damping and vibration-isolation device comprises lower adapting supports, vibration isolation metal outer rods, vibration isolation metal inner rods and an upper adapting support, wherein the lower adapting supports are located in the same plane and horizontally fixed at the lower end of the remote sensor damping and vibration-isolation device; one end of each vibration isolation metal outer rod is fixedly connected with the corresponding lower adapting support, and the vibration isolation metal inner rods are fixedly mounted in the vibration isolation metal outer rods and extend out of the upper end faces, in the axial direction, of the vibration isolation metal outer rods; the ends, extending out of the vibration isolation metal outer rods, of the vibration isolation metal inner rods are fixedly connected; and the upper adapting support is fixedly mounted at the joint of the vibration isolation metal inner rods. The remote sensor damping and vibration-isolation device is high in vibration reduction efficiency and few in consumed system resource, functional separation of a rigid supporting structure and a damping and vibration reduction structure is achieved, the technical problem that the rigidity of a vibration isolation system is hard to maintain effectively is solved, and the temperature maintaining purpose of a working section of the damping and vibration isolation system is achieved.

The invention provides a cold cutting die for a titanium alloy precision-forged blade, which can effectively control the deformation for the side cut of the titanium alloy blade, improve the production efficiency and lower the production cost. The cold cutting die comprises an upper die plate and a lower die plate, as well as a punch and a lower die, wherein the upper die plate and the lower die plate are connected by a guide pillar and a ball guide sleeve in a matching manner, the punch is arranged on the lower die plate by a punch base plate, the cold cutting die is characterized in that the lower die comprises a female die and a support die, the female die is fixedly arranged on the lower die plate by a screw, the female die is internally provided with a vertical through slot and a horizontal through slot which are perpendicularly communicated, the support die is arranged in the vertical through slot, the lower end of the support die is supported by a rubber mat, the rubber mat is arranged on the lower die plate and positioned in the horizontal through slot, and the support die is 3-5mm higher than the female die under non-working state.

The invention discloses a thin-wall casing process window welding process which comprises the steps that an anti-deformation tool is inserted between an outer ring and an inner ring of a casing, the surface of the anti-deformation tool is attached to the inner wall of the outer ring, the anti-deformation tool and a process window are correspondingly arranged, and an assembly tool fixes a patch block and places the patch block into the process window. The patch block and the process window are fixed in a spot welding mode, the assembly tool is dismantled, the patch block and the inner wall of the process window are welded in a single-pass welding mode, argon is introduced into the back face of the process window during welding, and the anti-deformation tool is taken down after the position to be welded is cooled to the room temperature; the inner wall of the outer ring of the cartridge receiver is supported through the anti-deformation tool to prevent deformation, the patch block is clamped and fixed by clamping the patch block through the assembly tool, the patch block is welded and fixed to the outer ring of the cartridge receiver in a spot welding and single-pass welding mode, deformation caused by welding stress is effectively controlled, the quality of an outer pipe on the welded surface is improved, and the service life of the outer pipe is prolonged. The production operation is convenient, and the production efficiency is improved.

The invention relates to a double-defense-line flexible anchoring structure of a dam body core wall geomembrane and a foundation concrete structure. According to the double-defense-line flexible anchoring structure of the dam body core wall geomembrane and the foundation concrete structure, a geomembrane in a dam body can be fixed to foundation concrete below the geomembrane. According to the technical scheme of the double-defense-line flexible anchoring structure, an anchoring groove is formed in the top face of the foundation concrete, the interior of the anchoring groove is divided into a plastic deformation area located on the upstream side and formed by filling plastic filler and an anchoring mechanism located on the downstream side, and the geomembrane penetrates through the plasticdeformation area to be fixed to the downstream side in the plastic deformation area through the anchoring mechanism. The double-defense-line flexible anchoring structure is suitable for engineering adopting the geomembrane as the middle anti-seepage core wall of the dam body.