SD751型国产数字地震仪在水网中施工,经常遇到无法靠近排列接收位置的情况。尽管备有复盖转换开关,但仪器车也只能停放在首道或末道向水域中延伸接收最后一个排列。当水域范围超过一个排列的长度时就无能为力了。过去遇到这种情况,一般都是采取排列不动,炮点继续向前移动,加大偏移距,两岸互换炮、检的特殊观测系统施 SD751 domestic digital seismograph construction in the water network, often encounter the situation can not be arranged near the receiving position. In spite of the cover changeover switch, the instrument car can only park on the first lane or the last lane and extend to the water to receive the last one. When the water range exceeds one permutation, it can not do anything. In the past, this kind of situation was generally followed by an arrangement of fixed motion, a continuous movement of shots, increased offset, exchange of artillery between the two sides of the Taiwan Strait and inspection of special observing systems