With the vigorous advancement of urbanization, underground geological hazards and the disasters caused by them have attracted increasing attention. This project has developed a new type of seismic source to excite elastic waves, so that the excited elastic waves have the characteristics of wide frequency band range, rich high-frequency components, good low-frequency response, and large dynamic range; select an internationally advanced fully digital seismic data acquisition system to implement high-density, high-precision data acquisition, so that the data signal has the characteristics of high resolution, high signal-to-noise ratio, and high fidelity; Using combined multiple wave trains such as reflected waves, scattered waves, and dual-source surface waves, as well as seismic technology with dynamic and kinematic parameters such as velocity, frequency, amplitude, and phase, to conduct three-dimensional geological structure and structural investigation and geological hazard detection, so that The detection results can confirm and complement each other. Taking elastic wave excitation technology, seismic data acquisition technology, and joint multi-wave train wavefield identification technology as the connotation, a technical system of three-dimensional geological mapping seismic exploration methods based on new sources has been established to guide urban three-dimensional geological structure and structure surveys and urban coal base Goaf surveys, surveys of urban active faults in different levels of seismic activity zones, and seismic exploration for seismic safety evaluation of urban construction engineering sites.
Technological innovation points:
(1) Independently developed a new type of non-explosive and non-electromagnetic source to stimulate elastic waves for seismic exploration. At the same time, key components, namely a mechanical lock and an automatic descent device, have been developed in a targeted manner to quickly accumulate and release energy, prevent the device from producing secondary shocks, and avoid interference from secondary waves on effective waves. Obtained 3 invention patents and 4 utility model patents authorized by the Intellectual Property Office of China;
(2) Independently developed a fully digital engineering dual-source surface wave exploration data acquisition and processing system for active-source and passive-source seismic detection. Through the combination of artificial sources and natural sources, the detection depth of the surface wave method has been significantly improved. At the same time, the key component, namely an artificial surface wave excitation source prompt, has been developed in a targeted manner. Obtained 1 invention patent and 1 utility model patent authorized by the Intellectual Property Office of China;
(3) A set of high-resolution, high-signal-to-noise ratio, and high-fidelity two-dimensional seismic exploration combined with multi-wave train seismic wavefield identification logos based on new sources and various kinematic and dynamic parameters was established for the first time. "A joint multi-wave seismic exploration method for goaf" has been accepted by the invention patent application of China Intellectual Property Office;
(4) A three-dimensional geological mapping and seismic exploration method and technical system with new elastic wave excitation technology, seismic data acquisition technology, and joint multi-wave train wavefield identification technology has been established for the first time. By transforming scientific and technological achievements and accelerating the industrialization process of high-tech enterprises, good economic and social benefits have been achieved.
Through innovation in achievement transformation methods and innovation in expanding scientific and technological cooperation and exchange mechanisms, we will promote and apply it to urban active fault surveys in Hangzhou, Xuzhou, Suzhou, Suqian, Changzhou and other places and earthquake safety evaluations of urban construction engineering sites in the Yangtze River Delta, as well as Shaanxi, Shanxi, Inner Mongolia, Hebei, Shandong, Hubei, and other resource-based cities in provinces and regions to detect geological disasters in coal bases and goaf areas along railways, as well as seismic exploration of underground space, hidden faults and metal minerals.
After expert appraisal, the research results are at the forefront of the country and have reached the international advanced level. The application of research results has achieved obvious economic and social benefits. From 2010 to 2012 alone, new sales revenue exceeded 31.6484 million yuan, and new profits and taxes reached 4.3089 million yuan. Won 4 national invention patents and 4 utility model patents; participated in the compilation of 1 industry standard of the Ministry of Construction, published more than 20 academic papers in domestic core journals; and won 3 provincial and ministerial science and technology awards for scientific and technological achievements.