Combining with practice, the maintenance and quality control of digital topographic gallery are approached in this paper.
文章结合实践，对数字地形图图库的维护及其质量控制方面的有关问题进行探讨。
With the engineering survey control network, authors made a high precision orientation, measuring and control to basement, mine gallery wall of CSR beam loop by polar coordinates with total station.
采取工程测量控制网，对冷却储存环“S”形束流环的基础、坑道墙，采用全站仪按极坐标法进行高精度定位、测控。
In order to appraise the quality testing of grout curtain, digital borehole camera technology is applied to three boreholes of the grouting gallery no. 3 in Xiaolangdi Water Control Project.
为了评价帷幕灌浆效果，将数字钻孔摄像技术应用到小浪底水利枢纽3号灌浆洞3个灌浆质量检查孔中。
Moreover, the installation problems of coal handling gallery of span concentrated control building are solved by applying high level sliding construction technology.
通过对栈桥和网架在大跨度输煤栈桥中的应用进行经济性比较，证明输煤栈桥采用网架结构是技术先进、经济合理的。
Moreover, the installation problems of coal handling gallery of span concentrated control building are solved by applying high level sliding construction technology.
通过对栈桥和网架在大跨度输煤栈桥中的应用进行经济性比较，证明输煤栈桥采用网架结构是技术先进、经济合理的。
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