You can refer to a situation as quicksand when you want to suggest that it is dangerous or difficult to escape from, or does not provide a strong basis for what you are doing. The research seemed founded on quicksand. State in which water-saturated sand loses its supporting capacity and acquires the characteristics of a liquid. Quicksand is usually found in a hollow at the mouth of a large river or along a flat stretch of stream or beach where pools of water become partly filled with sand and an underlying layer of stiff clay or other dense material prevents drainage. Mixtures of sand, mud, and vegetation in bogs often act like true quicksands. Any sand may become "quick" if its effective weight is being carried by water between the grains. In that case, even a footstep may collapse the loose structure. The sand-water suspension is denser than an animal or human body, so the body cannot sink below the surface, but struggling may lead to loss of balance and drowning
a mass of loose, wet sand that becomes fluid when suddenly vibrated; heavy objects will sink into it
A soil type that creates a mire whereby a person or animal walking over the area will sink May both create a hazard and limit the developability of a site
{i} soft sand that is saturated with water, bed of moist sand that sucks in and envelops objects that rest on its surface
Quicksand is deep, wet sand that you sink into if you try to walk on it. The sandbank was uncertain, like quicksand under his feet
Sand easily moved or readily yielding to pressure; especially, a deep mass of loose or moving sand mixed with water, sometimes found at the mouth of a river or along some coasts, and very dangerous, from the difficulty of extricating a person who begins sinking into it
A sand/water mixture that is fluid because water flows upward through the deposit and exerts pressure on sand grains, keeping them from touching each other