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软弱破碎岩体的处理,历来是水电建设中的一个重大课题。目前常用的工程处理措施不外是开挖、置换、锚固和灌浆,而前三者常因限于开挖深度、地应力松弛、软弱破碎带过于破碎或其分布边界不明等原因,有时难以实施或收效甚微,唯灌浆加固可不受这些因素的限制,且易于实施。但已往对灌浆效果、尤以其对低渗透性的软弱破碎岩体是否适用,普遍持怀疑态度。近几年来,我们同中科院广化所合
The treatment of weak and broken rock mass has always been a major issue in hydropower construction. At present, common engineering measures are excavation, replacement, anchoring and grouting. However, the former three are often difficult to implement due to the limitation of excavation depth, relaxation of earth stress, overbreak of weak crushing zone or unknown distribution boundary With little effect, the only grouting reinforcement is not limited by these factors, and easy to implement. However, the past is generally skeptical about the effect of grouting, especially on whether it is suitable for low-permeability, weak-broken rock mass. In recent years, we cooperate with the Chinese Academy of Sciences Guanghua