5results about How to "Avoid Destabilization and Destruction" patented technology

The utility model discloses a combined lining structure of an underground gas storage. The combined lining structure comprises a plurality of linings and a plurality of buffer devices, wherein the number of the buffer devices is the same as that of the linings; the multiple linings are sequentially arranged on the inner wall of the underground gas storage cavern in the circumferential direction of the underground gas storage cavern, and buffering seams are reserved between the adjacent linings. Each buffering device is arranged at one buffering seam and comprises a bent buffering piece and two fixing pieces; the two ends of the buffering piece are connected with the two adjacent linings in a sealed mode through fixing pieces respectively. The buffering seams are arranged between the adjacent linings, and the buffering devices are used in a combined mode, so that during gas storage, gas pressure borne by the fragmented linings is transmitted to external surrounding rock, tension fracture damage of the linings is avoided, and the compression performance of the linings is remarkably improved; when the gas is released, the adjacent linings are mutually squeezed to form a stressed whole, instability damage is avoided, the service life of the underground gas storage can be remarkably prolonged, and the safety of the underground gas storage can be remarkably improved.

The invention discloses a lossless reinforcing device for an angle steel structure of a power transmission tower, which is connected to a single angle steel structure of the power transmission tower and comprises a buckle and reinforcing angle steel, the reinforcing angle steel and the single angle steel structure are attached to each other in a limb back mode to form symmetrical attaching pieces with T-shaped sections. The buckles are connected with the two limb tips on one side of the symmetry axis of the attaching piece and the two limb tips on the two sides of the symmetry axis of the attaching piece in a clamped mode respectively, and fixing between the reinforcing angle steel and the single-angle steel structure is achieved. The method has the beneficial effects that the fixing design that the fitting pieces with symmetrical T-shaped sections are formed by the reinforcing angle steel and the single angle steel in a limb back attaching mode and the buckles is adopted; when the single angle steel is pressed or bent, the buckles ensure that the reinforcing angle steel and the original single angle steel are firmly attached and cooperatively work, the inertia moment of the T-shaped section is increased, the bearing capacity of the T-shaped section is enhanced, and the original angle steel is prevented from being untimely unstable and damaged; the reinforcing method adopting the lossless reinforcing device is suitable for reinforcing single angle steel of structures such as a power transmission tower, drilling and welding on original angle steel are not needed, in-situ lossless reinforcing is achieved, and field installation is convenient.

The invention relates to the technical field of underground excavation construction, in particular to an underground excavation obstacle removing scaffold tightly attached to an underground diaphragm wall of an existing station and a construction method.The underground excavation obstacle removing scaffold comprises a frame body, two walkway plates are installed on the upper portion of the frame body, a dense mesh is arranged on the front side of the frame body, and two installation grooves are formed in the left side and the right side of each walkway plate; a mounting block is inserted into the inner wall of the mounting groove, and sliding blocks are mounted on the front side and the rear side of the mounting block; the method has the beneficial effects that the MJS horizontal reinforcing technology and the five-step three-step method are adopted for tunnel portal breaking, rapid, safe and low-cost tunnel portal breaking work is achieved, the construction progress is accelerated, the construction risk is reduced, meanwhile, in the scaffold erecting process, through cooperation of a hook, a lower hook piece and a rubber pad, the construction efficiency is improved, and the construction cost is reduced. Therefore, the possibility that the walkway plate slides on the frame body is effectively reduced, the installation stability of the walkway plate is enhanced, and the using effect of the scaffold can be improved.

This invention provides a method and system for determining the timing of arch reinforcement construction in soft rock deformation sections of open-face TBM tunnels. The method includes: obtaining a first deformation threshold for a typical steel arch within the tunnel section entering its ultimate bearing capacity; monitoring the deformation of the steel arch to be tested within the tunnel section; and determining whether arch reinforcement is needed at the steel arch based on the first deformation threshold and the monitored deformation values. This invention establishes a decision-making mechanism for arch reinforcement based on steel arch deformation monitoring values. It determines whether reinforcement is needed by analyzing the relationship between the steel support deformation monitoring values ​​and the deformation threshold, effectively balancing the conflict between TBM tunneling and support, and improving TBM tunneling efficiency. The decision criteria are simple and clear, allowing for precise determination of reinforcement timing and avoiding problems such as increased construction risks, increased investment, and extended construction periods caused by subsequent arch replacement.

This invention relates to a thick-walled rubber-lead-core rubber composite bearing with vertical limiting function. It includes a thick-walled rubber bearing, a lead-core rubber bearing, a sleeve, and a vertical guide rod. The sleeve is embedded in a hole in the center of the thick-walled rubber bearing, and the vertical guide rod is inserted into the sleeve. The sleeve includes a wide portion and a narrow portion, and the vertical guide rod also includes a wide portion and a narrow portion. Under normal load, the overall vertical stiffness of the composite bearing is the series stiffness of the pure thick-walled rubber bearing and the lead-core rubber bearing. Under horizontal seismic action, the horizontal force between the upper and lower flange plates of the thick-walled rubber bearing is mainly transmitted through the contact between the vertical guide rod and the steel pipe sleeve. When the seismic action is large, resulting in large vertical compressive and tensile deformation of the thick-walled rubber bearing, the vertical guide rod and the sleeve provide contact stiffness. Compared with the prior art, this invention has advantages such as vibration isolation / earthquake protection, simple bearing connection structure for easy production and installation, and prevention of tensile damage and rigid swaying of the device.