3results about How to "Avoid incongruity" patented technology

The invention belongs to the technical field of geotechnical engineering rock mass strength parameter testing, discloses a parameter calibration method of a Hoek-Brown empirical strength criterion, and solves the problems that an existing method depends on a single data source, is low in fitting precision and does not consider rock mass dynamic disturbance. The method comprises the following steps: acquiring indoor test and field actual measurement multi-source data, and carrying out abnormal value elimination and normalization preprocessing; constructing a rock mass disturbance coefficient dynamic correction model to correct basic parameters; an improved cuckoo-least square fusion algorithm is adopted to fit the core parameters; and the parameter precision is verified in combination with reserved data. The method is comprehensive in data source, parameters can dynamically adapt to working conditions, fitting precision is high, and the method can be widely applied to rock mass strength evaluation of geotechnical engineering such as tunnels and side slopes.

This invention discloses a method and related equipment for determining the actual furnace heat load deviation coefficient of a water-cooled wall in an ultra-supercritical Π-type boiler. The water-cooled wall comprises multiple loops divided along the width of the furnace. The method includes: obtaining the working fluid flow rate, outlet pressure, inlet enthalpy, measured outlet steam temperature, and total inlet working fluid flow rate and total inlet enthalpy for each loop; establishing the correlation between the outlet working fluid enthalpy of each loop and the heat load deviation coefficient; establishing a system of simultaneous equations with the heat load deviation coefficient of each loop as unknowns based on the conservation of total mass and total energy; substituting the measured outlet steam temperature and outlet pressure of each loop into a working fluid thermodynamic property database to obtain the measured outlet enthalpy, and then substituting this into the system of simultaneous equations; solving the system of simultaneous equations to obtain the actual furnace heat load deviation coefficient. This method avoids the problems of existing iterative correction methods relying on initial values ​​and unstable convergence by using a reverse analytical solution, and provides stable and reliable solutions under complex operating conditions such as deep peak shaving.

The invention discloses a time-cost-unobstructed combined river network section multi-objective optimization evaluation method. The method comprises the following steps: firstly, carrying out structured analysis on basic information and an engineering target, and establishing a unified input system comprising flood passing time, cost, a patency target, a weight of the patency target and a reference value; then, multi-scene flood simulation is carried out based on an SWMM model to quantify flood passing time, the whole life cycle engineering cost is calculated, and a smoothness score is calculated in combination with the overflowing capacity, the water level change rate and the water flow resistance; then, candidate scheme parameters are extracted, deviation degree comparison is carried out on the candidate scheme parameters and reference values, and points needing to be adjusted are identified; and finally, performing hierarchical evaluation and sorting on the schemes through weighted comprehensive core index scores, and outputting recommendation schemes and specific structural optimization suggestions. According to the method, contradictions among time, cost and smoothness can be systematically balanced, and comprehensive support is provided for scientific design and optimization decision making of the river network section.