translated from Spanish: Presents SOBSE first report of LINE 12 of the CDMX Metro

The Secretariat of Works and Services (SOBSE) presented the progress of the revision of the Tunnel of Line 12, which covers from Atlalilco to Mixcoac, after carrying out the necessary research on the underground stretch of Line 12 of the Collective Transport System (STC) Metro of Mexico City.The owner of the agency, Jesús Antonio Esteva Medina, reported that these works are coordinated by 23 people , including six specialists from the Mexican School of Civil Engineers A.C., working in conjunction with eight tunnel experts from the Mexican Transport Institute, six Metro specialists, as well as six specialists attached to the General Directorate of Transport Works (DGOT) belonging to SOBSE.” Yesterday, progress was made on Culhuacán’s physical inspection of Atlalilco and, daily, we will be reporting the sections that are being inspected. A physical inspection and lifting with equipment are done. Read more: Celebrate Sheinbaum and AMLO Ceremony in Major Temple; Dilma Rousseff”The underground stretch of L-12 consists of 11.8 kilometers and, for the purpose of carrying out the reviews, was divided into nine intertramos covering the entire length that goes from the gateway to the tunnel located from Culhuacan station to Atlalilco, and to the maneuvering area of the Mixcoac terminal station”, said Esteva.So far , has been completed with the physical inspection of that section in 5.5% of the total tunnel review. In addition, Esteva Medina stated that two inspections are carried out: physics and physics carried out with specialized teams.” In the latter will run a survey with high frequency microwaves, which is performed with a three-dimensional laser scanner, allows to know thicknesses of materials, detects moisture in the strata that make up the structures, and identifies underground infrastructure and the existence of gaps and gaps in the subsoil,” explained the engineer. Photo: Government of Mexico City How was the inspection carried out? According to secretariat data, stage one began at 08:00 hours that day, with the assurance of high and low voltage wiring. In the following stages, energization tests, verification from the Central Line Control Post, review of security and communication systems and remote tests, energization of rectification substations and validation of operating protocols will be carried out progressively. Among the elements raised so far is the ballast, both at the bottom and top, the catenary and a 21-meter-long stretch of the track that was suspended, as well as some fall-prone plates, aluminum wiring supports and the removal of track gravel, for which the Prosecutor’s Office implemented a chain of custody of all the removed elements. Photo: Government of Mexico City Among the elements raised so far, is the ballast, both from the bottom and the top, the catenary and a 21-meter-long stretch of the track that was suspended, as well as some fall-prone plates, aluminum supports from wiring and the removal of track gravel , for which, the Public Prosecutor’s Office implemented a chain of custody of all the removed elements. Read more: Covid-19 vaccine: immunized 328 pregnant in mayoral CuauhtémocWhere elsewhere, in terms of victim care, Mexico City’s Executive Commissioner for Victim Care, Armando Ocampo Zambrano, reported that so far 99 support of 10,000 pesos has been granted to families of collapse victims and 40,000 pesos to 24 families by emerging support; the resource corresponding to Metro user insurance is pending. AMLO to investigate Sinaloa candidate for participation of government secretaries in event

Original source in Spanish