在水利水电工程地质勘察中,由于推广金刚石小口径钻探,很需要有能直接观察Φ56毫米钻孔孔壁地质现象的钻孔电视设备。为满足这一需求,长办物探队与天津大学继续协作,在Φ91毫米钻孔彩色电视的基础上,研制成功了Φ53毫米钻孔彩色电视。1985年6月中旬,水利电力部科技司在宜昌主持召开了Φ53毫米 In the geological survey of water conservancy and hydropower projects, due to the promotion of small diameter diamond drilling, it is necessary to have a direct observation of Φ56 mm borehole wall borehole geological phenomena of drilling television equipment. In order to meet this demand, Long-term material exploration team and Tianjin University continue to collaborate on the basis of Φ91 mm borehole color television, and successfully developed Φ53 mm borehole color television. In mid-June 1985, the Science and Technology Department of the Ministry of Water Conservancy and Electric Power hosted a Φ53 mm meeting in Yichang