Guyuan tunnel plugging company welcomes you to visit the new Grand plugging! The company dedicated to provide you with the best quality service! National toll-free 24-hour hotline: 13961999789 Business Service Hotline: 15862087268 The company has offices in the country: Eastern Region Northern Region Southern Region Central District, Northwest meet your company's needs, you can receive a call the day arrived at the scene to provide satisfaction... The construction program and product pricing. Willing to cooperate with your company happy, beneficial and win-win. Definition waterproof plugging: 1. Temporary anti tunnel construction, drainage should be permanent defense, drainage facilities combined with the "anti, cut, row, blocking the combination of local conditions and comprehensive management" principle. Select both economically reasonable and feasible flood control measures to ensure the stability of surrounding rock, to facilitate the construction of initial support, and to ensure that before the secondary lining construction, site construction conditions have a waterproof layer. 2. Before construction, according to the drawings and survey data, is expected to groundwater conditions and estimate the amount of water that may arise with reference to "underground waterproof engineering technical specifications" (GB50108-2001) of the relevant regulations to prevent, and drainage plan, submitted to the Engineer for approval. Construction, respond to the tunnel site effluent, water quality, water quantity and variation, such as the observation well test record, and continue to improve and perfect defense, drainage measures. 3. There are potholes in the roof above the ground, when the test pit and so easy to water, drawings or the Engineer shall be dealt instructions; original natural valley should be regulation to ensure smooth flow of water, if necessary, the need to add a paved ditch bed. 4. Groundwater development in soluble rock construction, in order to prevent water bladders, and high-pressure water gushing river suddenly appeared, excavation work surface should be laid ahead of drilling and proposed security measures to prevent water inflow, submitted to the Engineer for approval. 5. Underground cave appeared, by laboratory confirmation of the lining structure aggressive, the drawings or the Engineer shall be instructed to take appropriate anti-erosion measures for different types of erosion. 6. When the roof has a pool, the bottom should be seepage control measures, should also have to divert overflow facilities, not any overflow overflow. 7. Excavation of a large area of ??water leakage inside the cave, the focus should be used drilling water drains convergence introduced and drilling sites, the number, diameter, depth, direction and amount of seepage made detailed records, according to determine Set behind the arch wall lining drainage facilities. 8. No special requirements such as drawings, water shall be discharged into the tunnel behind the lining of the inside of the gutter. Construction should be prepared lining behind sparse drainage facilities, while if grouting, drainage facilities shall not be blocked. Plugging the National Unification Advisory Hotline: 13961999789 Guyuan tunnel plugging