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在地下水位较高或有地面滞水地段开挖基坑,常会遇到地下水的处理问题。由于地下水的存在,不仅土方开挖困难,工效低,边坡易于塌方,而且会导致地基被水浸泡,破坏地基土,降低地基承载力,造成工程完工后建筑物的大量沉降,使建筑物开裂或破坏。因此,基坑开挖施工中,应根据工程地质和地下水文情况,采取有效的降低地下水位措施,
The excavation of foundation pits with high groundwater levels or groundwater stagnant areas often encounters groundwater treatment problems. Due to the existence of groundwater, not only the earthwork is difficult to excavate and the work efficiency is low, the slope is liable to landslide, and the foundation is immersed in water, destroying the foundation soil, reducing the bearing capacity of the foundation, causing a large amount of settlement of the building after the completion of the construction, and cracking the building. Or destroy. Therefore, in the excavation of foundation pits, effective measures should be taken to reduce the groundwater level according to the engineering geology and groundwater conditions.