任意比值法测深尺在SUBSITE型仪器中的应用

APPLICATION OF MEASURE-DEEPNESS RULER BY ARBITRARILY SPECIFIC VALUE METHOD IN SUBSITE TYPE INSTRUMENT

为弥补型仪器未提供比值法测深功能的缺陷,特设计了“任意比值测深SUBSITE尺”。其原理表明,埋深是偏距的一元函数,任意选取一个比值参数,根据实测的偏距即可确d定埋深。株洲地质勘察院在江阴市城市管线普查工作中,根据上述原理设计制作了任意比值法测深尺。其制作简单,只需一把普通钢卷尺,以比值为例,偏距为时埋深为。对卷0.70.058 m0.1 m尺处背面用白色油漆画上刻度并标上即可,其余依此类推。这把卷尺背面,就成了0.058 m0.1 m型仪器专用的比值法测深尺。实际操作中,与型仪器比值法比较,除量取偏距SUBSITERD70 %的米尺不同外,其余完全相同。生产实践中使用它测深约个点,精度很高,经受住了实践的3 000检验。

To remedy the limitation of SUBSITE type instrument without the function of specific value method for detecting deepness, measure-deepness ruler by arbitrarily specific value method was specially design. The theory shows that the buried deepness is one element function of slant distance. Arbitrarily selection of a specific value d, and the buried deepness may be detected according to the true slant distance. According to the above principle, Zhuzhou Institute of Geology survey have made measure-deepness ruler by arbitrarily specific value method in pipe and line census of Jiangyin city. The process of manufacture is simple, a common steel tape is needed only, specific value 0.7 convenient, the buried deepness is 0.1 m when slant distance is 0.058 m. Draw a scale and mark up 0.1 m on the back of the steel tape at 0.058 m, and the rest similar. The back of the tape becomes the measure-deepness ruler by arbitrarily specific value for SUBSITE type instrument specially. Compared with RD type instrument by 70% specific value method in practice operation, the rest is exactly the same except no use of the meter ruler for measure the slant distance.It has been used in practice for sounding about 3,000 sites with high precision, through the practical examination.