x

Like our Facebook Page

   
Early Times Newspaper Jammu, Leading Newspaper Jammu
 
Breaking News :   Forces thwart Pak’s Hamas-style attack on Jammu | In Pak terrorists are given state funerals: Foreign Secretary | Terror nexus exposed: Al-Qaeda backs Pak | Jammu mosques, madrassas open for displaced border residents | Amid cross border shelling, CM Omar reviews situation in border districts | Breeding Ground for fidayeen, links to Hamas, stockpiled NATO arms | PM meets secretaries, stresses on alertness | Masood Azhar’s brother killed: BJP | LG Sinha chairs high-level meeting, reviews preparedness | Army uses Harpy drones to target enemy air defence systems | Pak attempts to attack 15 places in North, Western India foiled | 100 terrorists, aides killed in strikes: Rajnath at All-Party Meeting | SDRF conducts Mock Drill Exercise at IIT Jammu | Developed India strikes back at provocateurs by entering their hideouts: CM Yogi | Cash Row: CJI recommends impeachment of Justice Yashwant Varma, says sources | Amit terms AI as biggest disruptive tech of 21st Century in MZU National Workshop | Salman Sagar appointed as vice provincial president of JKNC | SET exam in J&K, Ladakh UTs postponed | ASCOMS & Hospital to provide free treatment to border shelling victims | Rs 300 crore BrahMos Missile Unit set to be inaugurated in Lucknow on May 11 | Any military attack on India will be met with very firm response: EAM Jaishankar | Vivek Bali Expresses Deep Grief Over Loss of Lives in Poonch Due to Pakistan Shelling | Reasi police foil illegal transportation of Khair logs in Katra area | 84 Bn CRPF Provides Relief to Flood-Affected Families | DC Jammu Reviews Zonal Master Plan for Ramnagar Eco-Sensitive Zone | Horticulture Department Kathua organises exposure visit | DC conducts on site inspection of restoration works on NH-44 | Power shut down in several areas | GMC Doda organises Blood Donation Camp | HPS participates in annual “Save Water, Save Birds” campaign | World Red Cross Day observed at Udhampur | Reasi Administration celebrates World Red Cross Day | ACR reviews implementation of E-Waste Management Action Plan | Poonch Administration steps up restoration of Essential Services, Supplies | Arushi Kotwal of Doda Honoured by Union Minister Dr Mansukh Mandaviya | Mini-Super Bazar M-PACS Maitra inaugurated in Ramban | DC Reasi felicitates JK Board Class 10th 12th Toppers | Back Issues  
 
news details
If Agniveer killed in line of duty, NoKs to get over Rs 1 cr: Report
10/22/2023 11:03:40 PM

Agencies

New Delhi, Oct 22: Faced with a tricky terrain in the Himalayas, engineers of the Indian Railways have developed a new tunnelling method to complete the construction of Tunnel-1 on the 111-km-long Katra-Banihal section of the Kashmir rail link project.
The 3.2-km-long single tube tunnel, located at the foot of the Trikuta Hills in the Katra-Reasi section of the Udhampur-Srinagar-Baramulla Rail Link Project, has been described as the most difficult section of the project. “We have innovatively developed (I)-TM as Himalayan tunnelling method for tunnelling through the Himalayan geology to build tunnels in Jammu and Kashmir,” Railway Minister Ashwini Vaishnaw had said recently. Explaining the new tunnelling method, a senior railway engineer said it involved providing pre-excavation support measures to tackle the “flowing conditions” encountered while excavating the tunnel. The railways also changed the alignment of the rail line to ensure that only a small portion passes through the tricky terrain, which the engineers had described as the worst conditions ever encountered in building tunnels anywhere in the country.
A senior railway engineer, who has been involved in the construction of the project, said the engineers decided to provide rigid supports using ‘ISHB’ as against the lattice girder method used in the New Austrian Tunnelling Method.
“We inserted nine-metre pipes in the mountains. It is called pipe roofing. We made an umbrella using these perforated poles and filled them with PU grout. It is a chemical that mixes with the soil and increases its volume three times over and solidifies the soil like a rock. This structure is tested for stability and then we proceed with the excavation bit by bit,” the engineer said.
He said the engineers also designed stress release holes and wing drainage holes to allow the strata to relax and lose water. The difficult terrain has led to slowing down of the work.
“Had these conditions been encountered in any other country, they would have abandoned the site. But we decided to go ahead and employed a new tunnelling method,” he said.
Work was held up on this crucial tunnel for over three years since 2017 and engineers now plan to complete it by early next year.
The 111-km-long Katra-Banihal section predominantly involves tunnelling. There are 27 main tunnels (97 km) and eight escape tunnels (67 km). The section has 37 bridges, of which 26 are major and 11 minor ones.
  Share This News with Your Friends on Social Network  
  Comment on this Story  
 
 
 
Early Times Android App
STOCK UPDATE
  
BSE Sensex
NSE Nifty
 
CRICKET UPDATE
 
 
 
 
 
 
 
 
   
Home About Us Top Stories Local News National News Sports News Opinion Editorial ET Cetra Advertise with Us ET E-paper
 
 
J&K RELATED WEBSITES
J&K Govt. Official website
Jammu Kashmir Tourism
JKTDC
Mata Vaishnodevi Shrine Board
Shri Amarnath Ji Shrine Board
Shri Shiv Khori Shrine Board
UTILITY
Train Enquiry
IRCTC
Matavaishnodevi
BSNL
Jammu Kashmir Bank
State Bank of India
PUBLIC INTEREST
Passport Department
Income Tax Department
JK CAMPA
JK GAD
IT Education
Web Site Design Services
EDUCATION
Jammu University
Jammu University Results
JKBOSE
Kashmir University
IGNOU Jammu Center
SMVDU