Huaxiang's Lan-Chongqing railway LYS-12 marked the fourth division has been admitted since the end of July, and actively carry out pre-project preparatory work, in the Design Institute of the completion of delivery pile, the four divisions of the full range of pile to restore the lost, and completed the encryption point settings. The project department staff of all measurements of hard work, re-measurement of work on August 27 ended. 4 Division, Lan-Chongqing railway LYS-12 Standard Control Network retest Task in the first completion of the works are carried out and laid a good working basis.

Huaxiang's Lan-Chongqing railway line measurement of the total length of four divisions 53Km, measured through the terrain is hilly area of Sichuan Basin, the ground relative altitude 100-600m, terrain undulating grooves are more dense vegetation, temperature higher than Gao, measurement difficult. To ease the pressure on project funding, and actively integrate social resources used by the Department for the project, selected to meet the requirements of the qualification of surveying and mapping units retest. From August 15 onwards, the project department by C-, D-and E-class GBS control network for the separation of the original CPI, CPII, and CPIII measure of control points, elevation control points according to the requirements of third-class standard of measurement re-measurement, with 12 days to complete the work to control the network retest.