DYNAMICCOMPACTIONOFSOILFORTHEBELTCONVEYORATVIKRAMCEMENTWORKS,KHOR,NEEMUCH,M.P.–INDIA

DYNAMICCOMPACTION(DC)Category: Miningwaste

Developer: UltratechCementLimitedConsultant:

Contractor:

Area/Quantity: 8200m2

Year: 2016

DYNAMIC COMPACTION OF SOIL FOR THE BELT CONVEYOR- VIKRAM CEMENT WORKS, M.P. – INDIA - REV.1 PAGE 1

PROJECT DESCRIPTION The project consists in the construction of conveyor belt from SK3 mining area to SK2 at Vikram Cement Works, Khor, Neemuch, M.P., India. About 42 footings of this conveyor belt were to be constructed on a filled-up area. Ground improvement work was necessary to increase the bearing capacity & reduce the settlement up to the acceptable limit of the filled-up area before the construction of footings.

Figure 1: DC Rig performing the Dynamic Compaction at site

SOIL CONDITION / GEOTECHNICAL PROBLEM Geotechnical investigation showed up to 6 to 7 m of a deposit of loose backfilled strata underlain by hard rock. The whole strata was filled up by using mining waste material from limestone quarry which contained boulders of variable size (20mm to 200mm). The selection of the ground improvement technique to be used needed to comply with these factors: • Effective for the strata containing gravels and boulders • Time and cost effective

MENARD SOLUTION

DYNAMICCOMPACTIONOFSOILFORTHEBELTCONVEYORATVIKRAMCEMENTWORKS,KHOR,NEEMUCH,M.P.–INDIA

DYNAMICCOMPACTION(DC)Category: Miningwaste

Developer: UltratechCementLimitedConsultant:

Contractor:

Area/Quantity: 8200m2

Year: 2016

DYNAMIC COMPACTION OF SOIL FOR THE BELT CONVEYOR- VIKRAM CEMENT WORKS, M.P. – INDIA - REV.1 PAGE 2

Menard implemented the technique Dynamic Compaction (DC). It consists of delivering high energy impacts at the ground surface by repeatedly dropping steel pounder (normally 10 to 25 tons) from heights ranging from 10 to 25m. It is applied in a systematically controlled pattern of drops on a coordinated grid layout. Soil strength is increased, and compressibility and settlements are decreased as a result of the densification.

QUALITY CONTROL A total of 8200 m2 area (for 42 footings) was improved using Dynamic Compaction (DC). Several number of pre & post compaction PMT test with PLT were conducted in order to justify the required performance.

Figure 2: DC Equipment