32 results about "Dam failure" patented technology

The invention relates to a gravity dam telescopic joint water stop failure backwater fast closing treating method and belongs to the telescopic joint backwater closing treatment of gravity water blocking building structures of the water conservancy project. The method includes drilling, testing the seepage condition, adopting the auxiliary seepage reducing measure, placing a mechanical grouting pipe and a concrete grouting pipe, first injecting a quick condensing high expansion polyurethane grouting material, and then injecting a special anti-scouring cement base material to close a drilling port and complete the grouting process. The method has the advantages of being capable of quickly treating water leakage caused by telescopic joint water stop damage, capable of achieving water carrying operation, not required to empty a reservoir or not affecting normal water reservation and capable of quickly repairing the damaged water stop by using the material characteristics and the seepage water pressure to achieve low-loss quick repair engineering and remove engineering hidden hazards, greatly saving engineering investment, saving water resources, quickly solving the engineering problems without affecting normal operation of the engineering.

The application discloses a dam system failure flood analysis system, including: a dam system topology analysis module, a data collection module, a single dam analysis module, a flood evolution analysis module and a prediction module; the dam system topology analysis module is used for Determine the classification of the dams in the dam system; the data collection module is used to collect the information of the dams in the dam system; the analysis module of the single dam is used to establish the water level model of the dam, according to the water level model of the dam and the building parameters of the dam body The data determines the flood state model of the dam; the flood evolution analysis module is used to analyze the process of flood flowing from the low-grade dam to the high-grade dam, and calculates the inflow of the downstream high-grade dam according to the outflow of the low-grade dam; The prediction module is used to predict whether the downstream dam will fail if the dam fails during the flood evolution process, predict the failure time of the downstream dam failure, and the peak flow of the failure flood.

The invention discloses a method for demonstration and early warning of dam break flood based on BIM technology, specifically: first establish a three-dimensional solid terrain model and a building model; then calculate the parameters of the dam break development process and the dam break flood parameters, and establish the dam break The 3D simulation model; combine the obtained 3D solid terrain model and building model, the 3D simulation model of dam failure with the particle fluid system to realize the real simulation of the dam failure process and flood evolution; finally, animation and rendering of the simulation process, Get 3D real dam break flood evolution animation. The invention also discloses a demonstration early warning platform based on the method. The method of the invention can simulate the dam break process and flood submersion range, and intuitively understand the evacuation of residents and the submersion status of important buildings when facing a dam break by using animation. In order to obtain the simulated flood submersion process after the dam break, provide risk analysis and technical assessment data for water conservancy project construction, design and construction units.

The present invention relates to a concrete gravity dangerous dam and dam break risk measurement method, belonging to the field of water conservancy projects. The method comprises the steps of: employing a sound wave tomography detection technology to perform detection of a concrete gravity dangerous dam, namely employing the sound wave tomography technology to perform comprehensive detection of the dangerous dam, determining the worst dangerous section of a dam body, providing and establishing a dynamic modulus parameter for power measurement and stability evaluation of concrete gravity dangerous dam and dam break risks on this basis, utilizing the parameter to monitor the worst dangerous section change rule of the gravity-type dangerous dam in a condition of reservoir water level change,and utilizing a unit power damaging rate and a unit time damaging rata to comprehensively evaluate and analyze the change rule of the dynamic modulus of the dangerous section so as to evaluate and predict the dynamic stability and endurance of the concrete gravity dangerous dam.

The invention discloses a grid storage structure of a tailings pond mould bag dam and a grid storage method. The grid storage structure comprises a sub-dam, a first mould bag retaining dam and a second mould bag retaining dam which are arranged in sequence. . A tailings dry beach area is formed between the sub dam and the first mold bag retaining dam, and the tailings dry beach area is used to store graded tailings. A tailings discharge area is formed between the first mold bag blocking dam and the second mold bag blocking dam, and the tailings discharge area is used to store full tailings. A tail water clarification area is formed between the second mold bag retaining dam and the mountain, and a drainage structure is provided in the tail water clarification area. In the invention, a grid frame is formed by the first mould bag retaining dam and the second mould bag retaining dam, and the grid frame can guide the tailings relatively directionally and restrict the flow of the tailings, thereby reducing the tailings of fine particles entering the tail water with the water flow. Sand, as much as possible to keep the tail water as clear as possible to meet the requirements of environmental protection or to meet the requirements of safely raising the drainage elevation in the reservoir area. At the same time, the grid frame can improve the overall strength of the storage structure and reduce the risk of dam failure.

The invention discloses a method for safety monitoring, early warning and impact assessment of a dam break process. The invention combines close-to-photogrammetry technology, TPS deformation monitoring system, airborne LiDAR measurement technology and three-dimensional laser scanner measurement technology to obtain high-precision measurement Data and three-dimensional model, to obtain the deformation information of the dam in the survey area; remove the gross error and error processing of the obtained information, establish the relationship between monitoring variables and deformation by establishing a regression model, and accurately obtain the influence of the external environment on the process of the dam failure. Abnormal values, judging the abnormal deformation, and monitoring the abnormal situation; finally, the obtained 3D point cloud data is processed to automatically find out the deformation area, accurately identify the dam break site, and obtain the complete dam break process based on the oblique photography 3D model. The method solves the problems that the traditional dam safety monitoring method is too single, has low precision and cannot monitor abnormal deformation and settlement of the dam in time.

The invention discloses a structure and a method for controlling the flood peak flow of a dam break, belonging to the field of disaster prevention and mitigation engineering, and provides a structure and a method capable of effectively controlling the peak flow of a dam break. For the structure of the peak flow of the dam break, steel pipe piles are arranged at the middle and lower parts of the dams on both sides of the discharge channel, and the steel pipe piles on each side are respectively arranged in close proximity to each other in the corresponding state from the dam break to the 20-year flood peak flow state. The outer side of the side bank slope surface line corresponding to the side bank of the discharge channel, the inner end of the steel pipe pile is at least as deep as the side bank corresponding to the side bank of the corresponding discharge channel under the dam break to the 20-year flood peak flow state 10m below the toe line. The invention can delay the expansion speed of erosion on both sides of the discharge channel through the slope protection of steel pipe piles on both sides, the protective cement slurry reinforced gabion on both sides, and the anti-erosion of the outlet impact-resistant cement slurry reinforced gabion, thereby delaying the collapse of the dam time, effectively reduce the maximum flood peak flow of the breach, and achieve the purpose of disaster prevention and mitigation.

The invention discloses a longitudinal guided wave monitoring method for early warning of dam failure of a tailings pond. The method includes step 1: on the basis of fully analyzing the existing engineering data and conducting geological surveying and mapping investigation, determining the position of the monitoring point along the span direction of the accumulation dam; step 2: drilling a pre-embedded waveguide array at the position of the monitoring point; 1 ) Drilling and pre-embedding PVC pipes at the monitoring points; 2) selection of waveguides; 3) determining the number N of waveguides; 4) placing the waveguides at the center of the PVC pipe; 5) The orifice is tightly plugged with a rubber stopper; Step 3: installation of the longitudinal guided wave sensor; Step 4: establishment of a signal collection base station; Step 5: signal collection; Step 6: analysis and processing of data. The longitudinal guided wave monitoring method for early warning of tailings dam dam failure provided by the present invention has the advantages of low labor cost, all-weather automatic monitoring, simple and easy operation of the monitoring method, simple data analysis, less error factors and high detection accuracy .

The invention belongs to hydraulic experiment model facilities, in particular to an automatic control circulating water tank for simulating instantaneous dam breaks, including a water tank, a gate, a water level control system and a gate lifting control system. The water level control system includes the water injection pipe, the water inlet pipe and the water guide pipe connected with the circulating water pump controlled by the industrial computer, and the water level gauge at the upstream of the gate and the water level at the downstream of the gate, respectively. water gauge. The gate lift control system includes a vertical rack set on the front of the gate plate and matched with the motor drive gear, and a lifting guide rail fixed on the guide rail on the water tank, and a pair of vertical guide bars set on the back of the gate plate. During the lifting process of the door panel, it is always matched with the vertical guide groove of the lifting guide rail. There is also an automatic air-drying device in the water tank downstream of the gate, which is convenient for the development of the dry bed experiment. The invention is stable, automatic and efficient.