GCH-86型浅层模拟光点记录地震仪,是为开展工程地震勘探工作而研制的.经室内测试和野外试验,以及投入野外生产使用,证明仪器的主要技术性能已达到或部分超过了原设计的要求.本文介绍了其工作原理和主要技术指标,以及主要特点和用途,并给出了仪器的标定和野外试验结果,最后对该仪器做了几点说明. The GCH-86 shallow simulated light spot recording seismometer was developed for engineering seismic exploration.It has been proved that the main technical performance of the instrument has reached or partially surpassed the original by indoor testing and field testing, as well as put into field production Design requirements.This paper introduces its working principle and main technical indicators, as well as the main features and uses, and gives the calibration of the instrument and field test results, the last of the instrument to do a few instructions.