确保该屏障能够承受额外的负荷，可能导致被雪犁抛出都堆积了反对屏障。
Ensure that the barrier can withstand the additional loads that may result from plowed snow being both thrown and piled up against the barrier.
所有雪崩都是由于物质的过渡负荷造成，通常是积雪堆积过厚，很不稳固，超出了山坡面的承载能力。
All avalanches are caused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope that supports it.
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