After the latest survey compared to the initial set-Chengdu-Chongqing-off line 10 sites

   Railway line through the laser scanner data can be accurately measured up to 1-2 cm, which can be saved for the circuit design for more than half the time! Yesterday, the two reporters to follow the China Railway Hospital-Chengdu-Chongqing passenger line mapping survey team to visit the scene, mapping experts, disclosed for the first aerial survey of the current railway use of advanced technologies, much attention alignments, and site set up with the detailed planning. Chengdu-Chongqing Passenger Line length 306 kilometers with a total of 10 sites, is expected to start within this year, after completion directly to Chongqing, Chengdu, only about 1 hour.

   Ultra 10 million worth

   Aerial scanner can be accurate to centimeters

   4 pm yesterday, reporters follow the China Railway Group 2 Institute of Surveying and Mapping Branch Neijiang victory came a small hillside town, where the line is the line Chengyu passenger seat, two officers are taking advantage of GTPRS for mapping ground-based measurements. "Investigation is like to gather intelligence before a line of investigation required a

   Years, is now 3 months to complete. "Surveying and Mapping Institute of Iron 2 hospital, said Wang Zhi, deputy chief engineer, and now using aerial survey, GPS precision Baseline Solution, as well as airborne laser radar scanning a series of advanced technology, so efficiency and accuracy have increased.

   Aerial in the end, how to measure the geological situation? Wang Zhi said the aerial survey of aviation when the camera is usually installed in the aircraft, the bottom of the pre-prepared input latitude and longitude GPS navigation systems of aircraft, aircraft take-off after the camera will take pictures in accordance with procedures, almost each photo can cover 2 km, Chengdu-Chongqing-off special aerial survey flying a total of five times, the line along the

   Line of mountains, rivers, ravines Dengjun proved a clear picture, the last pictures taken they will sort out, forming a geological data, the accuracy of this data can be controlled at a fraction m range.

   "Compared to laser radar scanners in terms of, the accuracy is also not what?" Wang Zhi Introduction Recently, they successfully tested a laser radar aerial technology, which provides the data may differ with the actual data is only 1-2 cm, which in the world are advanced. This principle is to be installed in the plane of the aerial camera replaced by laser radar scanners, laser penetrating through the clouds touch the ground, the reflection back to instrumentation, the data is automatically accepted and storage, graphic data, altitude and other information are readily available , while the advanced scanner on the market set the price of more than 10 million yuan.

   New Sites

   Bridge and tunnel across the board the proportion of ultra-Liu Cheng

   Based on the current circuit design, across the board initially identified 10 sites, including the Chengdu East, Jianyang, Ziyang, Zizhong, Neijiang, Rongchang, Yongchuan, Bishan, Shapingba, Chongqing,

   East, Chengdu and Chongqing, which both stand for the remaining stations line the new site, the new station should, in light of local cultural characteristics to carry out a new design, and strive to build a local landmark. Compared with the previously announced program, from the Chengdu Longquan East Station has led to post-stations, but now after the latest survey compared to various factors, Chengyu passenger station designed ultimately decided to cancel the Longquan.

   "This line also has a feature that are more bridge and tunnel." According to the Chengdu-Chongqing Railway passenger and two homes have been designed Jia-yin, said the Deputy Director, East Station leads from Chengdu, the Chengdu-Chongqing-off special will be immediately elevated into the Jackie Chan's Bridge , 21 km bridge audience, is the longest line of a bridge that will cross the well-being of Merlin Trinity Hua Xiang, Chiang Juyuan scenic spots such as vegetable and Tori the edge of three scenic spots, and then connected to the audience 7.3 km of the Longquan Mountain Tunnel. Because of the mountainous geological environment, access to the territory of Chongqing, the routes used mainly in the form of bridges and tunnels through the preliminary statistics, the length of bridge and tunnel across the board for 201 kilometers, accounting for 65% the proportion of the line, in addition, estimated total investment for the line 431.9321 million yuan, the average cost of 1.4095 yuan per km, the design speed of 350 km.