摘要：In longwall mining where use frame support and control roof by full caving; rocks could impact the support, damage some its details and reduce support’s longevity. Using waste, elastic, and deformable capability materials (like old truck tires) not only reduce impulse which impact the support fatally and increase support’s longevity, but also contribute to protect the environment.
其他摘要：In longwall mining where use frame support and control roof by full caving; rocks could impact the support, damage some its details and reduce support’s longevity. Using waste, elastic, and deformable capability materials (like old truck tires) not only reduce impulse which impact the support fatally and increase support’s longevity, but also contribute to protect the environment.
