India's First Sandvik DT1130 Jumbo Rig Delivered to Major Cavern Project
Fourteen Sandvik underground jumbo drill rigs are being used on India's three strategic crude oil storage caverns under construction, in drill and blast duties to excavate more than 9 million m³ of rock from the 24.4 km of tunnels and caverns to store 5.33 million metric tonnes of crude oil. Deputy Project Manager for the S K E&C - KCT JV on the Padur project contract 1B, Prasanna K.M, has stated that the Sandvik rigs represent "the lifeline of the project."

India's first Sandvik DT1130 underground jumbo 3-boom drilling rig has been delivered to the South Korean Engineering & Construction Co – Karam Chand Thappar Joint Venture (S. K. E & C – KCT JV) for the third of the country's three crude oil storage caverns – together with two Sandvik DT820 2-boom rigs and a second DT1130 for its Phase 1B contract.

India's First Sandvik DT1130 Jumbo Rig Delivered to Major Cavern Project

The Padur project has been awarded as two identical packages with Hindustan Construction Co (HCC) winning 1A - the second contract - and relying on three Sandvik DT820's for the underground excavations. The combined capacity of both contracts will total 2.5MMT of crude oil.

Contract 1B
The S K E&C – KCT JV initiated site mobilisation in May 2010 and began tunnelling operations in October and by March 2011, has completed 450 m of access adits and 150 m in the water curtain gallery.

Providing access to the underground workings, the adit features a total of 120 x 45 mm diameter holes drilled across the 11 m x 8 m high cross section using the three Sandvik rigs.

The access adit is being prepared at a gradient of 15º throughout excavations except along the horizontal junctions. Routed 150 m before the first junction to the water curtain gallery, the access portal continues for a further 268 m before opening as a junction to provide access to both ends of the first cavern.

In total, the access adits will be 1900 m long and enter the cavern headings 100m from both ends. Before excavation of the cavern heading can begin however, work must have been completed on the water curtain directly above.

Water curtain gallery
The water curtain gallery is being used for the first time in India in the construction of all three storage cavern projects and represents an essential aspect in the construction programme.

Featuring a 6.5 m wide and 6 m high cross section, the 800 m long gallery will feature 70 x 70 m long x 102 mm diameter bore holes drilled on both sides at an inclination of 10º; to totally encompass the top of all four caverns 40 m below.

India's First Sandvik DT1130 Jumbo Rig Delivered to Major Cavern Project

The boreholes will then be sealed and pumped with high pressure water in a continuous recirculatory system at 6 bar to seal any fissures in the rock around the caverns.

The water will prevent seepage of crude oil fumes through the fissures, eliminating the possible risk of explosions.

Caverns
Once the water curtain has been proven the contractor anticipates preparation of the first header of the four caverns by the end of July.

All four caverns are each 700 m long and 20 m wide with caverns 1 and 4 having a height of 30 m and 2 and 3 a reduced height of 22 m. The crowns for all four are set at – 40 m and the base of 1 and 4 being – 70 m.

The four caverns are each spaced 20m apart with 1 and 2 connected together as are 3 and 4 to form two 'U' shapes.

During drill and blast operations with the Sandvik rigs, the header access adit continues 20 m through to provide access to the next cavern.

On completion of the 8 m high header, the joint venture will prepare a ramp down to the bench below then cut back to drill and blast the 8 m high bench 1.

A similar process is repeated for each of the remaining two benches to complete the full cavern heights of 30 m and 22 m respectively.

By completion of the caverns, 4 m x 4 m inlet shafts will be excavated into the sides of caverns 2 and 3 together with 12 m x 6 m outlet shafts directly into the crowns of 1 and 4.

Throughout excavation only a strictly regulated 400 mm tolerance is permitted to ensure a smooth wall finish; so as to reduce the possibility of voids filling with crude and the accumulation of vapours.

During tunnelling operations, shotcreting is applied to offer additional support and a smoother surface using a steel fibre mix shotcrete; generally to a thickness of 100 – 150 mm.

Sandvik Tools
All three jumbo rigs are fitted with Sandvik R38/R32 drifter rods and R38 shank with 45 mm diameter button bits to drill 3 m – 5 m deep holes, depending on the rock and specification.

India's First Sandvik DT1130 Jumbo Rig Delivered to Major Cavern Project

"We have been extremely impressed with the performance of the Sandvik tooling," says Planning & Scheduling Manager, Yong Wan Song, adding, "With on site regrinding, we have been able to achieve up to 200 drill metres with each button bit: regrinding after the first 80m."

The joint venture has also been able to achieve 3000 drill metres for the drifter rods and as much as 5000 drill metres with the shank.

Currently, the SK E&C – KCT JV is anticipating a 12 hours cycle during drill and blasting in the caverns. "I am confident that we will maintain this cycle rate particularly when the second DT1130 has been delivered."

Says Deputy Project Manager, Prasanna K.M., "I am a great believer in the speed of the 3-boomer and it's 11 m reach, so much so that l specified no basket so as speed drilling further. I am a great believer in the operator checking holes 1 and 2 then programming hole 3 whilst the other booms are drilling. It's a fast process."

The Sandvik rigs are also used with all booms for rock bolting duties.
Click Here
To Know More or to Contact the Manufacturer
Please let us know your name.
Invalid Input
Please let us know your Designation.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.
Our other Value-Added Services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Invalid Input
Invalid Input
Invalid Input
PRD Rigs and its team of engineers continually strive to innovate new designs for our geotechnical drilling rigs. Our goal is to help maximize our clients’ geotechnical investigation by making their job faster

Read more ...

Buoyed by projects in roads, metro rails and other infrastructure developments, there is renewed activity in the foundation and piling equipment industry with manufacturers and distributors offering more robustly built machines

Read more ...

Due to ever expanding urbanisation and infrastructure development in Gujarat, the state government has made it mandatory to have 2-5 level basements in high-rise residential and commercial complexes - essentially to cater to car

Read more ...

IMT, one of the global leaders in piling rigs, has launched its AF 125 piling rig. Made in India for the Indian market, this 125 KN torque capacity rig was unveiled to customers on 27 Nov 2018 in an event organized at IMT's partner, GMMCO's

Read more ...

Pune-based Indus Rock Tools showcased series of new products are designed to meet the primary and secondary surface rock breaking requirements. At bauma CONEXPO India, the company showed its

Read more ...

Since 2015, when the hydraulic breaker range from Volvo Construction Equipment (Volvo CE) launched in India, sales have more than tripled. During bauma Conexpo India 2018, attendees were also impressed with

Read more ...

Casagrande showcased its new innovations in the field of Ground Engineering, and highlighted the advanced technology in its range of equipment. The company has recently introduced its new KG25

Read more ...

IMT, the global leader for Piling Rigs from Italy, has appointed GMMCO Ltd, a C.K.Birla Group company, as exclusive distributor in India. GMMCO, which has a strong sales and service network in place

Read more ...

The foundation and piling industry is seeing renewed activity after a hiatus of 5-6 years. Equipment manufacturers, anticipating competition, are gearing up with both premium and economical options

Read more ...

Casagrande S.p.A., is a leading manufacturer of a wide range of foundation equipment such as large diameter piling rigs, equipment for diaphragm walls, CFA, stone column construction, DTH

Read more ...

Robbins Tunnel Boring Machine
Bangalore's last TBM for the city's metro-rail project had break through, marking the end of TBM tunneling on the Namma Metro phase-1. The Robbins operated machine, known as "Krishna", bored a 750m

Read more ...

Atlas Copco Hydraulic Breaker
Atlas Copco introduced the innovative hydraulic breaker 50 years ago which transformed the construction and mining industries. With your productivity and total cost of ownership as our priority,

Read more ...

Robbins Tunnel Boring Machine
Robbins mixed ground EPB broke through at Chennai Metro, finishing up a challenging second drive that saw the full gamut of difficult conditions. The 1,027 m long second drive for the machine was part

Read more ...

Casagrande Foundation Equipment
The B360XP machine was also used to build foundation piles with reinforcing cage, with a diameter of 1500 – 1800 – 2100 and up to 2400 mm. The excavation depth for this project reaches 64 metres

Read more ...

Horizontal Directional Drilling
Over the years, Indian Horizontal Directional Drilling (HDD) industry has undergone a rapid transition due to significant uptake of many infrastructural projects in the sectors of roads & bridges

Read more ...

Robbins Tunnel Boring Machines
Robbins introduced its Crossover Series of TBMs, a line of field-tested, rugged Dual Mode-type machines. Crossover TBMs feature aspects of two TBM types, and are ideal for mixed ground conditions that

Read more ...

Casagrande XP Concept
Since 1963 Casagrande has had an active presence in the world of special foundations. It has addressed a variety of scenarios over the last fifty years nationally throughout Italy. Born with the boom

Read more ...

Doosan Attachment Breaker
With revival of road construction projects, hydraulic rock breakers and drills manufacturers expect improvement in demand prospects. P.P. Basistha takes a look. Gradual improvement in aggregates off

Read more ...

Digga Auger Drive
Digga Australia, the renowned manufacturer of drilling attachments, has tied up with Suretech Infrastructure Pvt. Ltd for sales and product support of its Auger Drives, for the Indian sub-continent

Read more ...

Weiler Foundation Pile
The Ukrainian construction company Khmelnizkzalisobeton ("KHM") – produces hollow core slabs with a Finnish extruder production line, and reinforced foundation piles made of wet-cast concrete in molds

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.