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The _______ can be effectively adopted for excavation in or at the foot of the slope of a hill.

(a) Freezing process

(b) Cement grouting

(c) Pumping

(d) Well Point System

The question was posed to me in class test.

My question is from Deep Excavations in section Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

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The correct option is (a) Freezing process

The explanation: The freezing is a powerful versatile tool for foundation engineering for temporary ground support, groundwater control and structural underpinning. A portion of the slope is frozen and this position act as a temporary Dam to support the soil and it prevents the earth slides.

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