Dolenco Drain

WG-23 Shaft Design We recommend to watch this insightful presentation on shaft design, including the New Montreal Tunnelling Method (NMTM) developed by Verya Nasri, PhD, PE. Also including an example of using Dolenco Drain in shafts. This a must-watch for professionals who wants to keep up to date on the latest developements in underground construction. 👏👏 🚇 The 11th ITA WG-23 Webinar on Shaft Design is now available online.

The 6th Brazilian Tunnelling Congress organised by CBT - Comitê Brasileiro de Túneis e Espaços Subterrâneos will be held from 10 to 12 March 2025, in São Paulo, Brazil, featuring an engaging program focused on Development and Sustainability through Tunnels and Underground Structures.   We are excited to participate! Dolenco Tunnel Systems is proud to be a a Silver Sponsor of the event and will be present at booth 18 in the exhibition area. For more details, please visit the event's official website: https://lnkd.in/edhd8d7x #infrastructure #tunnelling #6cbt #cbt #túnel #undergroundconstruction #sprayedconcrete #shotcrete #waterproofing

Tunneling presents numerous engineering challenges, and effective water management is crucial to maintain the durability of the structure. One of the key concerns is hydrostatic pressure, which can lead to water ingress, leaks, and even structural deterioration over time. Without proper drainage, accumulated water can weaken tunnel linings, cause cracking, and increase long-term maintenance costs. To address this, Dolenco Drain offers an drainage solution designed to permanently relieve water pressure behind tunnel linings. 💡How does it work? Dolenco Drain consists of interconnected drainage channels that efficiently collect and redirect water away from the structure. It can be seamlessly integrated with shotcrete, spray membranes and traditional waterproofing solutions. ☝️Key benefits: ✔ Prevents hydrostatic pressure: eliminating long-term water-related damage. ✔ Slim monolithic structure, reduces the amount of concrete used. ✔ Flexible design: adapting to various tunnel surfaces. ✔ Reduces the need for post-injection and repairs, saving both time and costs. ✔ Durable and sustainable: made from recycled material with more then 120-year lifespan. With Dolenco Drain, engineers can ensure a safer, more efficient, and long-lasting tunnel infrastructure. #Tunneling #Engineering #WaterManagement #DolencoDrain #Infrastructure #Shotcrete #DrainageSolution

Important railroad refurbishing is going on in the tunnels connecting the national network in Spain and the further connection to the european railroads. After expanding the existing tunnel, a new shotcrete lining has been applied, including Dolenco Drain, to assure longterm durability. Dolenco Drain can be mounted with very little space, and here it is done even with the train still running. This was done with a clever buildup around the tracks, so work could be done safely. We appreciate the trust and incredible work being done under difficult conditions by our partners.

What is your biggest challenge in tunnels? Most of us would probably say structural integrity over the lifetime of the structure. Construction of a tunnel depends on uncertain, geological conditions and this makes it a risky and often complicated process. Water ingress is highly variable and changes continuously during construction and over the lifetime of the structure. Without proper drainage, water pressure accumulates behind the tunnel lining, forcing moisture through cracks and joints. This results in leaking ceilings, icicle formation in cold climates, and corrosion of reinforcing elements. Over time, continuous exposure to water deteriorates the tunnel lining, requiring frequent maintenance and costly repairs. These issues effect all types of tunnels and underground structures. Traditional approaches to water control in tunnel renovations solve the temporary problem of seeping, while Dolenco Drain permanently eliminate the water pressure causing seeping now and in the future. Dolenco Drain is a module with dimensions are 800 by 1200 mm, height 14 mm, looks as a linear drainage mesh, is easy to install, speeds up the pace of construction, and the operation efficiency is practically independent of the human factor. By applying Dolenсo Drain you are designing a thin structure with a network of drainage channels inside the first concrete layer of the structure, which prevents water accumulation and eliminates water pressure on the structure, which is a primary function of Dolenco Drain. What advantages will you get applying Dolenco Drain to rehabilitate an old tunnel? - Permanently preventing hydrostatic pressure - Allows for Thinner Structural Sections  - Reducing in the total concrete thickness - Long-Term Structural Integrity; extending tunnel lifespan  - Minimizes construction and repair time and simplifies construction in total. ➡️ 📄 Kindly refer to the attached document outlining three different examples of applications. Using Dolenco Drain provides a durable and efficient method, which enables faster and more reliable renovations while ensuring long-term tunnel integrity. Contact us to get more information about using Dolenco Drain to renovate tunnels or other underground structures. #Tunnels #Tunnelrenovations #Durability #Waterproofing #DrainageSolution #DolencoDrain #Lining #Infrastructure

Dolenco Tunnel Systems se complace en invitar a todos los profesionales de habla hispana del sector de la construcción subterránea a participar en un webinar presentado por Jozsef Hecht Méndez el 19 de febrero de 2025, a las 10:00 a.m., hora de Lima, Perú (miércoles). Agradecemos a Asociación Peruana de Túneles y Obras Subterráneas - APTOS por sus esfuerzos en la organización de este emocionante evento en línea. Encuentra los detalles del webinar a continuación. Haz clic en el enlace para registrarte y obtener más información: https://lnkd.in/er8yqTHE

We are happy to welcome, everybody from Engineers Australia and everyone who will have the possibility, to a webinar presented by Dolenco Tunnel Systems, on February 20, 2025, at 7:00 P.M. AEDT (Thursday). Our team appreciates Morteza Ghamgosar, Senthilnath G T and Australian Tunnelling Society for arranging this online event. Please look at the details of the webinar below. To join and learn more, please click on this link: https://lnkd.in/dF_smNTh

Wishing you a season filled with joy, peace, and warmth 🎉 🎊 🎇 Merry Christmas and Happy New Year from all of us at Dolenco Tunnel Systems🎄

In American Shotcrete Association`s Shotcrete Magazine latest publication, we have elaborated on how best to use Dolenco Drain with shotcrete, addressing many of the difficulties with controlling or eliminating water pressure in an easy, safe, long-term, and cost-effective manner. Even with all the technical and efficiency advantages of shotcreting, a major challenge remains in constructing underground and soil retaining structures: The presence of free and capillary water in fissures of rock formations and the non-rocky soil base, which impacts the structure during construction and maintenance. We appreciate input about shotcrete from Charles Hanskat and Cara Baker, in preparation of our presentation to the shotcrete community. https://lnkd.in/gND5Nybf #Shotcrete #Sprayconcrete #Waterproofing #DrainageSolution #DolencoDrain #Lining #Infrastructure #AmericanShotcreteAssociation #ShotcreteMagazine

How do you address water challenges in underground construction? Underground constructing, especially in tunneling, is seen as one of the most complex challenges in the field of civil engineering. The presence of free and capillary water in fissures of rock formations and the non-rocky soil base, which impacts the structure during construction and maintenance, is one of the major challenge in constructing underground and soil retaining structures. Water pressure on tunnel structures is an important design challenge that often requires creative solutions to mitigate water flow and prevent potential damage. During construction, you see footprints from incoming water on the floor and on the walls, which forces its way through the designed layers. The occurrence of this, shows that excavating of underground space in rock masses or saturated soil during tunnel construction, changes stress-strain state in soil/rock base and this can affect the concrete lining layers and cause micro cracks. Additionally the changed hydrogeologic conditions of free migration of water in mass, leading to increased hydrostatic pressure on the tunnel lining, which can force water through cracks or defects in concrete, can cause issues during construction and future tunnel operation. The Lyon Turin Railway Tunnel project between France and Italy is a good example of a complicated project, which typically can reveal a variating number of surprises during construction. Because a tunnel lining, as with all underground structures, is often exposed to ground water pressure and therefore requires water management, an integrated drain mesh solution behind the tunnel lining of a shotcrete layer and in combinations with the other design components, Dolenco Drain can safely and efficiently prevent water pressure buildup on the inner lining as seen in a variety of applications around the world. Dolenco Drain is an innovative solution which addresses many of the difficulties concerning water pressure in an easy, safe, long-term and cost-effective manner. #TunnelConstruction #WaterManagement #CivilEngineering #Shotcreting #HydrostaticPressure #TunnelingSolutions #DolencoDrain #UndergroundEngineering #InfrastructureInnovation #TunnelDesign #Waterproofing #SustainableEngineering #ConstructionChallenges #turin #lyon #LyonTurinTunnel #TunnelTechnology #EngineeringSolutions