19 results about "Source surface" patented technology

The invention belongs to the technical field of pile foundation construction, and particularly relates to a scene sound analysis method for interaction of a pile and a karst cave in a construction process, which comprises the following steps of: step 1, high-precision karst cave form detection: arranging crossed measuring lines with the pile foundation as a center, the length of the measuring lines being more than or equal to 20m and the spacing being less than or equal to 1m, synchronously adopting a high-energy acceleration tamper and the impact energy being more than or equal to 50kJ, active source surface waves are excited, the impact frequency ranges from 2 Hz to 5 Hz, environment noise is collected to serve as passive source surface waves, a three-component detector array is used for receiving, and the sampling rate is larger than or equal to 500 Hz. According to the method for analyzing the interaction scene sound of the pile and the karst cave in the construction process, by setting the method for analyzing the interaction scene sound of the pile and the karst cave in the construction process, wave velocity changes in the vertical direction and the horizontal direction and anomalies in high-speed and low-speed areas are analyzed, and the thickness of a covering layer and the burying depth of bed rock are deduced; the development depth, the scale and the space distribution condition of the monolith and the karst caves are determined.

The invention discloses a boundary-preserving thin-wall structure curved surface triangular mesh alignment method, which comprises the following steps of: reading a geometry and a mesh containing a thin-wall structure curved surface, and mapping a source curved surface and a target curved surface to a target curved surface geometric parameter space; detecting the intersection condition of the source curved surface grid and the target curved surface grid after mapping, and respectively splitting the source curved surface grid and the target curved surface grid into deletion and reservation areas; detecting a coincidence point of the reserved area and the deleted area of the target curved surface grid, and merging sub-areas in contact with the deleted area in the reserved area into the deleted area; boundary line grids of the source curved surface grid reserved area and the target curved surface grid deleted area are extracted and merged to form a transition area boundary line grid, and a transition area surface grid is generated; mapping reserved areas of the source curved surface grid and the target curved surface grid to a three-dimensional space, and combining the reserved areas with the transition area surface grid to obtain a combined surface grid; and extracting a triangular boundary of the source curved surface grid retaining region and an outer boundary of the combined surface grid as a constraint boundary line grid, and performing re-gridding optimization on the combined surface grid.

The invention relates to the technical field of geophysical exploration, in particular to a high-precision detection method for a rock-filled foundation in a deep sea area. A plurality of detectors are arranged at the target measuring point in a set mode; performing continuous data acquisition at the target measuring point by adopting a natural source frequency imaging method and an active source surface wave exploration method to obtain low-frequency surface wave data and high-frequency surface wave data of the target measuring point; respectively processing the low-frequency surface wave data and the high-frequency surface wave data by adopting a frequency division fragmentation statistical method; and according to the processed low-frequency surface wave data and the high-frequency surface wave data, carrying out fragmentation superposition to obtain a geological detection result of the target measuring point. According to the method, natural source frequency imaging is combined with a surface wave exploration technology, so that the applicability of frequency imaging in riprap layer-sludge geological scene detection with relatively strong transverse speed change can be remarkably improved.