Source: People's Daily - Guizhou Channel Original draft
A few days ago, the newly built Guinan high-speed railway (Guiyang to Nanning) under construction introduced the Shuanglong section of the Guiyang hub project in the construction work, digging out a natural cave, the horizontal texture of the stones in the cave, layer by layer like a cut mille-feuille cake, and a variety of strange shapes of stalactites are even more eye-catching.
On October 19, the author learned from the on-site interview that the cave is located on the ZXMZK2 400m main line of the base section of the Linhai Line reserved by the Guinan Introduction guiyang hub project in the Shuanglong Airport Economic Zone. Lu Hongping, deputy project manager of the guinan project of the guinan introduction of the guiyang hub project by the third company of the eighth bureau of the construction party, said that on the eve of the National Day, when the excavator master excavated the subgrade in this section, the ground collapsed, and careful inspection found that an underground cave was dug.
Strangely shaped stalactites in the cave.
"At the first time of discovery, we reported the situation to the owner in a timely manner while doing a good job of fencing to ensure safety." Lu Hongping said that in order to find out, on September 30, the construction personnel of the project department, together with the owner, the supervisor and the designer, entered the cave for the first time and inspected it. On October 6, the design team geological surveyors entered the cave again and went down to the deepest part to conduct the survey.
The transverse texture of the stones in the cave is like a sliced mille-feuille cake.
The cave is more than 40 meters deep, about 40 meters long, and more than 20 meters wide at its widest point, which is a cave with typical karst geomorphological characteristics, and there are a large number of stone milk, stone pillars and other scenery in the cave, and there are also layers of stone walls like mille-feuille cakes. "Due to the small size of the cave and the small development value, the experts of the exploration team have recommended that the stone concrete be used for backfilling." Wu Shenghua, the secretary of the project, said that the backfilling work will be carried out at the end of the month, and the amount of backfilling will be about 10,000 squares.
Schematic diagram of the route.
The new Guinan high-speed railway introduced into the Guiyang hub project Shuanglong section of the first construction area of the heavy difficulty and control projects, including the Mada Left Line Hulupo Bridge, the Mada Right Line Hulupo Bridge, Qinqi No. 2 Tunnel, as well as the expansion of the existing line base and the construction of the entire line adjacent to the existing line, etc., since the construction of the site, the cave has been excavated three times.
According to reports, the first work area officially entered the site in March this year, and the main project is expected to be completed at the end of March 2023, and the four power projects will be completed at the end of December. (Text/Tu Linwei)