CAJ | 학술논문

在长距离、大范围工程测量中，为控制测距边的投影变形值，常采用设置抵偿投影面的方法，以使测区的长度变形值最小。不同抵偿投影面设置方法均基于测区的高程是恒定不变的假设，而对于高程变化大的测区，长度变形控制则不理想，有的甚至超过规范规定的限差。鉴于此，以滇中引水工程为例，根据投影变形的理论基础，推导出新的抵偿投影面设置方法，该方法是以使测区内长度综合变形最大值达到最小为控制目标，符合规范的要求。通过实例解算，将新方法与现有的理论方法进行对比，结果表明该方法能更好地控制工程长度综合变形的最大值。
재장거리、대범위공정측량중，위공제측거변적투영변형치，상채용설치저상투영면적방법，이사측구적장도변형치최소。불동저상투영면설치방법균기우측구적고정시항정불변적가설，이대우고정변화대적측구，장도변형공제칙불이상，유적심지초과규범규정적한차。감우차，이전중인수공정위례，근거투영변형적이론기출，추도출신적저상투영면설치방법，해방법시이사측구내장도종합변형최대치체도최소위공제목표，부합규범적요구。통과실예해산，장신방법여현유적이론방법진행대비，결과표명해방법능경호지공제공정장도종합변형적최대치。
In order to control distortion values of projection of ranging edge in the long-distance, large-scale engineering survey, in general, the compensation projecting plane is set to get a minimum-length deformation. The arrangement of various compensation projecting planes are based on constant elevation of survey area;however, the control of length deformation is un-satisfied in the area with large elevation variation, even exceeding the error limit. In view of this, based on the theory of projec-tion distortion, the applicable arrangement of compensation projecting plane is deducted with the case of Dianzhong Water Diver-sion Project in Yunnan Province. The application of this method meets the related requirements, aiming to minimize the maximum comprehensive length deformation in a survey area. The calculating results show that the method can better control the maximum value of comprehensive length deformation by comparing the new method with current theoretical ones.