[Tianjin-strong high-pressure pump Co., Ltd. to recommend the star product] quality testing (b) a pore Rig: drilling diameter should be greater than the injection tube diameter 20 ~ 50mm, grout injection pump, in order to ensure the return to normal when the slurry injection , take the pulp. Drilling depth is greater than design a spray depth 0.5 ~ 1.0m, in order to meet the tip of the nozzle distance. 2, measured slant hole: Hole slope not greater than 1%, measured the length of the drill hole, tolerance of not more than 5cm. [Tianjin-strong high-pressure pump Co., Ltd. to recommend the star product] common failings of governance to enhance the operation shotcrete cement slurry orifice gone out, the piston injection pump, there is a large gap in the soil, the loss of the slurry, causing orifice do not take slurry, the slurry flow should not gap at the reinforcement. Governance measures: shotcrete lifting operation, to observe the situation of opening take slurry, Daqing injection pump, if not take the entire hole plasma, should immediately identify the reasons for processing. Other matters reference design drawings, specifications and project department regulations.