DELF INDIA “DCIPL”’s Post

Drill and Blast (D&B) tunneling is a construction technique critical for excavating through solid rock and other resilient materials. This method is especially pertinent in geologically challenging conditions, such as hard rock formations and areas with complex geological structures. Drill and Blast tunneling involves a systematic process of boring and explosive demolition that enables the efficient creation of tunnels through otherwise impenetrable geologies. The methodology includes two primary phases: drilling, where holes are meticulously drilled into the rock using advanced machinery tailored to the specific rock's hardness and composition; followed by blasting, where these holes are filled with explosives and detonated in a controlled manner. The blast fractures the rock, facilitating its removal and allowing for the tunnel to progress. The effectiveness of the D&B technique lies in its adaptability to diverse rock types and geological conditions. It is particularly advantageous in hard rock contexts where mechanical excavation methods such as Tunnel Boring Machines (TBMs) prove inefficient. D&B can be adjusted to address variations in rock type—ranging from granite to quartzite—and is effective under conditions involving high tectonic activity, where fault lines and thrust zones predominate.

Big Breaking! Maharashtra Metro Rail Corp Ltd. (MMRCL) has awarded a Rs. 999 crore tender to Kalpataru Projects International Limited for designing and constructing elevated metro viaducts across three major reaches in Nagpur Metro Phase 2.  -The project spans a combined length of 17.65 km and is slated for completion within 36 months. Read more: https://lnkd.in/gN7-8hsG KALPATARU PROJECTS INTERNATIONAL LIMITED   Connect with our Network: WhatsApp: https://lnkd.in/gFkQduMZ Facebook: https://lnkd.in/fdfw5YJ Twitter: https://lnkd.in/fb9UFeZ Instagram: https://lnkd.in/dZPzSB-M For regular updates, Subscribe to our newsletter: https://lnkd.in/dnQMmkyp #NagpurMetro #MMRCL #MahaMetro #KalpataruProjects #AwardedTender #KPIL #Phase2 #ElevatedViaduct #Connectivity #Metro #GreenMobility #UrbanTransit #Tracks #Contract #Order #Development #RailAnalysis

On this World Tunnel Day, Sika India reaffirms its commitment to providing innovative and high-quality solutions for the construction of safer, more resilient tunnels. With our expertise in passive fire protection and light reflective coating, we are dedicated to enhancing the safety and efficiency of tunnel transportation worldwide. In this endeavour, we’re proud to contribute to the Samruddhi Expressway Tunnel Project in Maharashtra. As part of this ambitious 701 km expressway connecting Nagpur to Mumbai, Sika ensured structural stability and fire protection with advanced, innovative solutions. - Passive Fire Protection Mortar: Sikacrete®-213 F IN and Sika MonoTop®-1010 IN, ensuring RWS fire curve compliance with a 20 mm protective layer. - Light Reflective Coating: Sikagard®-340 WCT IN, offering durable, washable protection with over 60% luminosity for better visibility. This project, executed in collaboration with other stakeholders, witnessed Sika solutions applied on the 8 km tunnel, with top-tier fire resistance and light reflectivity. Another project that exemplifies Sika's commitment to quality and safety in infrastructure development! #SikaIndia #BuildingTrust #WorldTunnelDay #SamruddhiExpressway #TrustAndBeyond

The Pune-Mumbai expressway’s missing link project, aimed at reducing travel time between Mumbai and Pune by at least 6 km, now targets a May 2025 completion. The Yashwantrao Chavan Expressway’s missing link project is divided into two phases: Phase 1 features two tunnels of 1.75 km and 8.92 km, while Phase 2 includes two viaducts of 790m and 650m. According to the Maharashtra State Road Development Corporation (MSRDC), 94% of the tunnelling work in Phase 1 is complete, but the viaduct construction in Phase 2 is proving challenging, with only 74% finished. The Rs 6,695 crore project, designed to bypass the ghat section known for landslides and traffic bottlenecks, has faced delays due to the complex engineering, wind pressures at high elevations, and various clearances. Regular commuters express concerns about ongoing traffic congestion, as the project has already missed several deadlines due to delays in land acquisition, statutory approvals, and the intricate engineering of tunnels and cable-stayed viaducts. Once completed, the project is expected to reduce the 19 km journey from Khopoli to Sinhgad Institute near Lonavala by over 6 km and cut travel time by at least 25 minutes compared to the current ghat section route. This will help decongest the stretch between Adoshi tunnel and Khandala exit, where the expressway merges with NH-4, often leading to severe congestion. #saudaghar #saudagharscoop #realestate #realestatenews #pune #punekars #punenews #punenews #saudagharnews #missinglink #punemumbaiexpressway #khopoli #sinhgad #adoshitunnel #khandala #nh4

Rail Vikas Nigam Limited has won LoA from Maharashtra Metro Rail Corp Ltd. for #construction works on Nagpur Metro Rail Project (NMRP) phase-2 Read More:- https://lnkd.in/gJ4UArJC #Metro #MahaMetro #MetroRail #RVNL #MetroConstruction #MetroProject

A state-of-the-art bullet train station is under construction in Kalupur, Ahmedabad, as part of the #Mumbai #Ahmedabad High-Speed Rail Corridor. Simultaneously, a modernized Ahmedabad Junction is also being developed. Upon completion, the bullet train station will be seamlessly integrated with Ahmedabad #RailwayStation and the underground metro, ensuring efficient multimodal connectivity for passengers.. #rslive #India #gujarat #bullettrain National High Speed Rail Corporation Ltd (NHSRCL)

The 47-year-old railway overbridge connecting Chinchwad to the old Pune-Mumbai highway will soon be demolished after being declared unsafe for commuters. Following recommendations from the Pune division of the Central Railway, the Pimpri Chinchwad Municipal Corporation (PCMC) had restricted heavy vehicles on the bridge for the past 18 months and installed height barriers to reduce load. A structural audit conducted earlier recommended demolishing and replacing the bridge rather than strengthening it. PCMC has appointed a consultant to design the new bridge, which will be sent to railway authorities for approval before initiating the tendering process for demolition and construction. Currently, only light vehicles traveling from the old Pune-Mumbai highway to Chinchwad Gaon use the bridge, and its complete closure depends on further advice from railway authorities. The parallel overbridge constructed years ago will continue to manage one-way traffic movement during the process. Meanwhile, PCMC has also nearly completed the strengthening of the 40-year-old Indira Gandhi railway overbridge in Pimpri, a project delayed by the Covid-19 pandemic, with only minor work on two wings of the structure remaining. #saudaghar #saudagharscoop #realestate #realestatenews #pune #punekars #punenews #punenews #saudagharnews #bridge #mumbaihighway #pcmc #centralrailway #heavyvehicles #demolishing #chinchwadgaon #gandhirailway #pandemic

*NHAI is planning a new connection road from the old Mumbai Highway to JNPT Jawahar Nehru port*. The highway will stretch from Pagote (on NH-348 near JNPA) to Chowk on the old Pune-Mumbai highway. *Features*: 29.219 km long, 60 meters wide, and six-lane. Elevated sections, ground-level roads, and two tunnels. Vehicles traveling from Pune will no longer need to enter Panvel or Belapur to reach JNPA. Similarly, vehicles from the north will bypass the Thane-Belapur Road, reaching JNPA in just 10 minutes via the new highway. *Connectivity*: The highway will have three major interchanges: NH-348A at Chirner. Goa Highway. Mumbai-Pune Expressway. Additionally, vehicles from the Atal Setu bridge will also connect to this highway near Chirner. *Key Features*: Tunnels: Two six-lane tunnels (1,900 meters and 1,570 meters long). Large Bridges: Six (lengths: 910 m, 220 m, 230 m, 600 m, 440 m, and 160 m). Small Bridges: Five. Flyovers: Four. Road Overbridges: Two. Land Acquisition: 175 hectares. Construction Timeline: 30 months.

*NHAI is planning a new connection road from the old Mumbai Highway to JNPT Jawahar Nehru port*. The highway will stretch from Pagote (on NH-348 near JNPA) to Chowk on the old Pune-Mumbai highway. *Features*: 29.219 km long, 60 meters wide, and six-lane. Elevated sections, ground-level roads, and two tunnels. Vehicles traveling from Pune will no longer need to enter Panvel or Belapur to reach JNPA. Similarly, vehicles from the north will bypass the Thane-Belapur Road, reaching JNPA in just 10 minutes via the new highway. *Connectivity*: The highway will have three major interchanges: NH-348A at Chirner. Goa Highway. Mumbai-Pune Expressway. Additionally, vehicles from the Atal Setu bridge will also connect to this highway near Chirner. *Key Features*: Tunnels: Two six-lane tunnels (1,900 meters and 1,570 meters long). Large Bridges: Six (lengths: 910 m, 220 m, 230 m, 600 m, 440 m, and 160 m). Small Bridges: Five. Flyovers: Four. Road Overbridges: Two. Land Acquisition: 175 hectares. Construction Timeline: 30 months.

How this would have been if it was railways with 3 or 4 lines. With 2 dedicated lines for local passenger trains .