ملف رقم ٩٣٠ لسنة ١٩١٢ "سكة حديد المحمرة - خرم آباد؛ [ظ‎‎١‎٤‎١] (٣٩٦/٢٨٩)

22
a .«*
matters, and a slight increase m eng There^will be no difficulty m keeping an
even gr^ent^Vom^i^l-i^Tang h Ahmad Kuchikeh, as_for the whole distance the line
will cross gentle limestone slopes. Its advantages are .
1 Cheapness. I think it will be found that the cost of the two bridges is amply
take a long time, as also will the bridging of the ravine.
It will necessitate the following bridges :
1. Across Saidmarreh below the bTrocS 6
river is here 150 feet to 200 ^ bank^ 60 fe ^
depth unknown, probably not over 10 ieet in summer , wiuuu
450 feet ; Tnncr The river here flows through a deep
2. Across Saidmarreh, near Fui-i-lang. r, , , , i n. more than
o-orge 6 feet to 10 feet broad at bottom, 12 feet to 20 feet at P>
f ffet broad in places; it is bridged by a single-span stone bridge a b dg
•250 yards long would be necessary, but no spans need be longer than 20 feet.
Gradient —From Kal’eh Riza to Saidmarreh 1 in 100 can be obtained "Almut
difficulty From Saidmarreh to Pul-i-Tang level ; from Pul-r-Tang to Zrarat Ahmad
Kuchikeh 1 in 75.
Curvature. —Easy throughout. _ '
Formation of Ground.-—Riza plain : Stony alluvium.
Puti-l^-Ah^Mkeh ; Gentle limestone slopes inclining 4° to south ; no soil
available ; no large ravines to cross or other awkward features.
Cost. —I class this section as follows :—
Medium hilly: Riza to Pul-i-Tang, 9 miles at 1,25,000 rupees ..
Hilly: Pul-i-Tang to Ahmad Kuchikeh, medium (on rock), 5 miles at
1,50,000 rupees
Bridge across Saidmarreh—
( 1 .) Below Zal Junction
(2.) Near Pul-i-Tang ..
Total
Rupees.
11,25,000
7.50.000
1 , 00,000
50,000
20.25.000
Before passing on to the next section mention should be made of the great
potentialities of the Pul-i-Tang gorge mentioned above for the generation ol electric
power on a large scale.
38. Fourth Section ; Ahmad Kuchikeh (1,950 feet), to Ab-i-Fani (1,500 feet), 15 miles.
Ab-i-Fani may be taken as the next ruling point beyond Ahmad Kuchikeh; its
height where it joins the Saidmarreh is 1,500 feet, where it issues from the gorge
through Kiyalan Kuh 1,700 feet. The distance for railway purposes may be taken as
15 mites. From Ahmad Kuchikeh there is a steady descent down the Jauzar valley till
at about 5 miles the Saidmarreh is reached at the point where it enters the long g or |p®’
the south end of which is Pul-i-Tang, height here 1,400 feet; there is therefore a la
of 450 feet in 5 miles to be negotiated. If the line be taken along the limestone slopes
between the Jauzar stream and the Saidmarreh gorge there will be no difficulty m
giving an even gradient, and curvature will be easy, but it will be difficult to geta
gradient much better than 1 in 60 ; 1 in 100 could be attained, but at considerable
expense, by following the outlines of the foot hills of Kiyalan Kuh, only touching
the 1,400 feet level near the Lailum stream, but the curves will be awkward, the
length of line probably 1 mile at least greater, and tbe work difficult and expensive.
As 1 in 50 will be unavoidable in subsequent sections, I propose the former alignment,
it passes over gentle limestone slopes with no difficult features such as spuis or
ravines. ^ ,i
The next 5 miles to the Ab-i-Lailum lie along the Saidmarreh valley, near t
river. The Lailum stream can be crossed half-a-mile above its junction with the
Height of the stream here 1,500 feet, banks 50 feet higher; width from bank to ban