Impermeable In The Karst Region Tailing Pond Construction Design Of Curtain Grouting

The rock mass in the nature consist of rock and the cranny which cut the rock, and in the case of lava include the solutional void, miscibility gap and solution cavity which growth along the structure face like cranny and so on. The intact rock is rare dankly, the permeability of the stratum mainly because of the lacuna, the lacuna permeability decide the permeability of the stratum. Use the linear dispose one row or several rows drill to mortar grouting, and use the grout to block up the lacuna, and to be the resistant water purdah, in order to reduce the infiltration capacity and pressure. This is an important method of basic treatment, this is the purdah grouting.Along with the successful building of the reservoirs in the Wu Jiang Du, Hong Jia Du, Long Tan of the Krast area, we accumulated a lot of project data of the water Resources and Hydropower, and get a long term development. But contrast with the water Resources and Hydropower, there are few research about the resistant dank especially the purdah grouting.There some difference between demand of the resistant bank and reservoir in the period to build the industry gangue depot in Karst area. The standard of the dank resistant and design of the dank resistant method, especially the design of the dank resistant purdah grouting have a absolutely difference, because of their application feature. At present, as the implement of the scientific development, the competent authority pay more attention to the construction of the gangue depot build, but at the same time, in term of the gangue depot construction, the corresponding standard and code of the water resistance have a upside potential. The majority gangue depot construction projects can but only refer to the code of the water resources and hydropower.This article use the practical examples of the work, after research the grouting theory and analysis the geological conditions from the practical examples, it make a useful exploration of the design of the purdah grouting, and use it to guide the practical work, through the engineering verification get a good result.