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The document summarizes 12 HDD crossings for a slurry pipeline project. It provides information on the chainage, length, borehole details including depth and soil strata for each crossing. Compressive strength values are reported for some crossings, typically at entry, middle and exit points of the bore. Drawings are referenced for some crossings to show the alignment and borehole locations. The crossings involve rivers, nalas, ghats and a hillock.

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Srigopi Chand Ramineni
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50 views1 page

Sensitivity: LNT Construction Internal Use

The document summarizes 12 HDD crossings for a slurry pipeline project. It provides information on the chainage, length, borehole details including depth and soil strata for each crossing. Compressive strength values are reported for some crossings, typically at entry, middle and exit points of the bore. Drawings are referenced for some crossings to show the alignment and borehole locations. The crossings involve rivers, nalas, ghats and a hillock.

Uploaded by

Srigopi Chand Ramineni
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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Summary - NMDC - Slurry Pipeline - HDD Crossings Date: 14-07-2021

HDD Chainage Depth of Compressive


Sno Length m Borehole Borehole No Soil Strata Alignment + BH
Crossing From To Borehole Strength MPa

1 Nala 6020 6140 120 Client BH SBH-678 3 Boulders N/A


2 Nala 7860 8253 393 Client BH SBH - 674 3 Boulders N/A
3 Khara Laba River 23400 23548 148 Client & L&T BH BH-28 10 Sandstone (Boulders) N/A Refer Drawing
Hard Rock At entry point 15.2

4 Sankani River 26420 27040 620 Client & L&T BH BH-31 10 Hard Rock At middle point 330 Refer Drawing

Boulders At exit point 190


5 Nala 30420 30582 162 L&T BH BH-34, 35 10 Very dense sand with boulders N/A

6 Nala 31120 31306 186 L&T BH BH-36, 37 10 Very dense sand with boulders N/A
At entry point 76.3
At middle point 19
7 Dankani River 1260 1600 340 Client & L&T BH BH-39 15 Hard Rock Refer Drawing
At exit point Not
available

8 Nala 39220 39420 200 Client BH SBH -548 3 Weathered Rock N/A
9 Ghat 54407 54949 542 Client BH SBH - 487 3 Silty Clay N/A

10 Nala 56340 56540 200 L&T BH BH-48 5 Hard Rock 47


At entry point Not
available

11 Ghat 63480 64660 1180 Client & L&T BH BH-54/ SBH 473-468 18/1.5 Hard Rock At middle point Not Refer Drawing
available
At exit point 38.7 @
2m
12 Hillock 75640 75840 200 L&T BH BH-61 5 Silty Sand N/A

Total 4291

# Sensitivity: LNT Construction Internal Use

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