Geological Issues on Environmental Engineering of Karst Deep Foundation Pit and Its Control Measures

The excavations of the foundation pits in the karst regions frequently generate the geological issues in environmental engineering. Drainage of the foundation pit formed the landing funnel of underground water which induce rocky surface collapse; the walls slump of the foundation pit are resulted in the excavation; meanwhile the breakage or partially rip formed of the constructions in the vicinity. In this paper, the influence on the foundation pits in excavation involved engineering geology, hydrologic geology, shields of foundation pits and surrounding buildings are investigated. Essentials and control measures are put forward in unearthing the foundation pits.