做过水库库区地形测量的同志都有这样的感觉:测区范围不好掌握。因为决定测区范围的因素不仅是水库的最高水位,而且还涉及到滑坡问题。(一)为什幺要测滑坡:我们知道水库的周围若系岩石,还比较稳定。若果是土质岸沿,因受自然力及人为的影响,时常在变化着,特别是经水浸润后更容易发生滑塌或崩陷等现象。当水库水位一涨一落时, Do the terrain survey reservoir gurus have this feeling: the measurement range is not good grasp. Because the factors that determine the extent of the survey area are not only the highest water level of the reservoir, but also landslide problems. (A) Why we should test the landslide: We know that if the reservoir is surrounded by rocks, it is still relatively stable. If it is a coastal shoreline, it is constantly changing due to natural and man-made influences, especially when slipped or collapsed after water infiltration. When the reservoir water level up and down,