Construction review and optimization design of Shandong gravity network
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摘要: 本文介绍了山东地区重力网的发展历史及现状，结合“十三五”重力网扩建项目进行综述，提出了优化山东重力网，尤其是增加鲁西网的必要性。目前山东重力网范围由鲁南测网、胶东测网扩大到鲁西测网，同时与河南测网、河北测网联网，实现山东地区与周边邻省全覆盖。并且详细阐述了山东重力测网分区及测量路线等设计情况，对网型特点及精度要求进行了说明。最后对山东重力网的监测能力进行了评价。Abstract: In the paper, we introduce the development history and current situation of gravity survey network in Shandong Province, including the construction of gravity survey network in the 13th five-year plan of Shandong Province. Then we think it is necessary to optimize Shandong gravity network, especially to increase gravity survey points in the western region of Shandong Province. At present, the scope of Shandong gravity network is expanded from the southern Shandong and the Jiaodong region networks to the western Shandong network. It is also connected with Henan and Hebei networks to achieve full coverage in Shandong and its neighboring provinces. The design of Shandong gravity network such as partition and measurement route is elaborated, and the characteristics and accuracy requirements of the network type are explained. Finally, the monitoring capability of Shandong gravity network is evaluated.
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图 1 山东重力观测网联测路线图
白线为断层，原有测点180个（黑色圆点），华北重力网测点20个（黑色五角星），跨断层水准测点16个（绿色三角形）、新测GPS测点108个（红色正方形），新建测点33个（紫色三角形），埋石测点31个（深蓝色正方形），安丘网测点17个（浅蓝色五角星）
Figure 1. Joint test road map of gravity surveying network in Shandong
The white line is a fault, 180 original test points (black dot), 20 gravity network in North China (black five-pointed star), 16 across fault levels (green triangle), 108 new GPS points (red square), 33 new build ones (purple triangle), 31 in buried stones (dark blue square) and 17 in Anqiu network (light blue five-pointed star)
图 2 山东重力网分区联测图
黑色线段表示鲁南网，红色线段表示胶东网，粉红线段表示鲁中网，蓝色线段表示鲁西网，紫色线段表示鲁北网
Figure 2. Partition joint survey map of gravity surveying network in Shandong
The black line segments represent southern Shandong network，the red line segments represent Jiaodong region network，the pink line segments represent central Shandong network，the blue line segments represent western Shandong network，the purple line segments represent northern Shandong network
图 3 鲁西重力网测点路线图
Figure 3. Survey point road map of gravity surveying network in western Shandong
表 1 测网边缘测点精度统计表
Table 1. Statistical table of accuracy of measuring point in edge measuring network
测点 距离/km 点值精度
/（10−8 m•s−2）薛城 127 11.2 焦庙 150 12.6 馆陶 146 12.4 码头 102 10.7 
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