A method for repairing cracks in earth-rock dam body
A repair method and technology for earth-rock dams, applied in the field of repairing cracks in earth-rock dams, can solve the problems of general repair effect, long construction period, and long setting time, and achieve shortened construction time, low construction cost, and high tensile performance Effect
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[0036] combine figure 1 and figure 2 As shown, a core rockfill dam located on a deep overburden layer with a dam height of 200m, during the operation of the dam after its completion, a number of longitudinal dam body cracks 101 approximately parallel to the dam axis and vertical dam axis cracks appeared on the dam crest. The transverse dam body crack 101 becomes a potential safety hazard of the dam.
[0037] Utilize the method of the present invention to repair the dam body crack 101 of the above-mentioned core wall rockfill dam, the steps are as follows:
[0038] a. Arrange an in-seam grouting hole 201 at an interval of 2m in the dam body 100 at the dam body crack 101 along the direction of the dam body crack 101; use a drilling tool to arrange the holes, and drill the in-seam grouting hole 201 to the dam 0.5m below the body crack 101, the diameter of the grouting hole 201 set in the crack is not less than the width of the dam body crack 101 where it is set;
[0039]b. Se...
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