Needle Heat Pulse Seabed In Situ Heat Flow Measurement Technology Research

Heat flow detection is an important basis for geophysical survey projects, using the probe-type flow meter measured heat flow is a commonly used method seabed. Since the mid-twentieth century,three main types heat flow meter has appeared: Bullard-type, Ewing-type and Lister type, so that heat detection accuracy and efficiency has been greatly improved. However, for the above several heat flow detection technologies, problems like bulky volume, inconvenient operation, and slower detecting-speed still remain. Therefore, submarine detection technology for heat-depth research, develop new types of heat detection equipment is very significant!This paper analyzes three common heat flow meter of the main technical features, model theory, as well as the situation and weakness of current submarine heat flow detection technology; and the prospect of its further development. On this basis, focuses on the dual-probe heat-pulse method (Dual-probe heat-pulse method, hereinafter referred to as DPHP Law) submarine flow detection techniques. Design theory based on DPHP situ measurement of thermal conductivity and heat pulse probe thermal conductivity data analysis software. Experimental results show that the dual-probe heat flow meter is a simple, fast detection, measurement of thermal conductivity data precision.Finally, a submarine in-situ thermal conductivity detection were achieved by in situ detection of marine data, data processing, exploration results and other results are consistent with heat flow meter, the detection efficiency of heat flow is much higher than other submarine detection equipment, has a practical significance in engineering !...