TY  - JOUR
T1  - Determination of Coefficient of Transmissibility for Crushed Rocks
AU - Abdullah Shlash, Marwah AU - Sami Mohammed, Hayder AU - A.Musa, Taghreed 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 5
SP  - 1532
EP  - 1537
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.1532.1537
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.1532.1537
KW  - Rockfill gabions
KW  -coefficient of transmissibility
KW  -crushed rocks
KW  -program
KW  -empirical formula
KW  -velocity
AB  - Rockfill gabions considered one of important self-spillway hydraulic structures, used as water
distributor, regulator and other purposes. An experimental investigation was carried out to note the effect of
the change of longitudinal slope and the change of rockfill size on the velocity at downstream side of gabion,
all tests carried out under through flow regime type, the monosized of rockfill were used (-76, +64), (-64, +50)
and (-50, +37.5) mm with three longitudinal slope 0, 0.014 and 0.028. Wooden frame meshed-side gabion with
constant dimensions, 220 cm length of the bottom side 150 cm length of upper side of gabion, 0.3 m width and
0.35 m height. The result showed that the effective of discharge increasing on the value of velocity of
downstream by increasing of rockfill size for same longitudinal slope and the effect of discharge decreasing on
the velocity at downstream by increasing the longitudinal slope for the same rockfill size, a dimensional analysis
concept used and non-linear regression by using IBM SPSS 21 program, to develop an empirical formula to
estimate the velocity at downstream.
ER  -