HULHULE-MALE’ BRIDGE PROJECT

EIA for the proposed Hulhule-Male’ Bridge Project
Cover layer of the quasi reef limestone is 2.5~9.5 m thick in shallow water, and narrower
towards deep water, underlying reef limestone (Q o 2-3 ).
Cover layer of the deep grooves is thicker, overlying 10~20 m medium -coarse sand with gravel
(Q m 4 ), underlying quasi reef limestone (Q o 3 ) and reef limestone (Q o 2-3 ), the main piers drilling of
the deep grooves layered as follows:
• Medium-coarse sand with debris (Q m 4 ): 0~2.4 m, loosing; grey, hoar, saturated,
uncemented; calcareous bioclast, asymmetric particle, poor sorting and grading; mixed
about 30% coral debris which diameter is 1~5 cm generally, the bigger one is above 10
cm which is angular gravel-like.
• Medium-coarse sand with debris(Q m 4 ): 2.4~4.8 m, slight-dense; grey, hoar, saturated,
uncemented; calcareous bioclast, asymmetric particle, poor sorting and grading; mixed
about 20~30% coral debris which diameter is 1~5 cm generally, the bigger one is above
10 cm which is angular gravel-like, worn part.
• Medium-coarse sand with debris (Q m 4 ): 4.8~18.2 cm, medium-dense; grey, hoary,
saturated, uncemented; calcareous bioclast, asymmetric particle, poor sorting and
grading; mixed about 20~30% coral debris which diameter is 1~5 cm generally, the
bigger one is above 10 cm which is angular gravel-like, worn part.
• Quasi reef milestone (Q o 3 ): 18.2-~23.5 cm, ivory, hoary, almost core is 3~15 cm short
columnar, part of core is 2~5 cm fragment, partially mixed with debris-shape coral
limestone; the framework mainly is 0.5~1.5 cm coral debris, including little 2~4 cm coral
debris, and a port of it is 0.5 cm diameter, 2~3 cm dendritic coral snags; multi-crystalline
calcite cement, and cementation is strong; biological pore, intergranular pore are mature,
surface of the core is irregular with little biological pore; the core is more rigid, the sound
of hammering is silvery, and core is tough and rock mass is fragile –integrated; the rate
of exploitation for core is above 70%, RQD is about 10%.
• Coral debris mixed with sand (Q m 2-3 ): 23.5~25.75 cm, hoary, grayish yellow, uncemented
or poorly-cemented, the diameter of coral debris ranges from 2~6 cm, angular gravellike,
the content of coral debris is about 50%; filling with calcareous gravelly sand,
coarse sand or coarse sand mixed with gravel.
Prepared by: CDE Consulting & China Shipping Environment Technology
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