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在水电建设工程中,修建大坝、拦造水库、开挖隧洞均要求基岩具有可靠的防渗性,足够的耐压性和稳定性,但一般天然岩石或砂砾石层很少具备这些条件,常常需要进行处理,改善它的各项性能。如果遇到软弱、破碎、多裂隙、节理发育、渗透性大的不良地层时,其承载能力差、透水性强,施工过程中岩体不能稳定,容易塌陷或者水渗漏严重,施工十分困难。如果没有适当的措施,施工中不但容易少慢差费,而且可能出现各种严重的危险事故,轻者漏水,使水库
In hydropower construction projects, the construction of dams, dam reservoirs and excavation of tunnels require that the bedrock be provided with reliable impermeability, sufficient pressure resistance and stability, but natural rock or gravel layers are rarely provided with these conditions Often need to be addressed to improve its performance. When encountering weak, broken, multiple fractures, joint development, and impervious strata with great permeability, the bearing capacity is poor and water permeability is strong. The rock mass can not be stabilized during construction, easily collapses or the water leakage is serious, and the construction is very difficult. Without proper measures, construction is not only easy to slow down the difference, and may appear a variety of serious dangerous accidents, the light leakage, the reservoir