2results about How to "Guaranteed waterproof effect" patented technology

The application provides a downhole grouting method for plugging a water-conducting space of laterally burned rock, comprising the following steps: determining a water-conducting space of laterally burned rock of a coal seam and a working face to be mined in the coal seam affected by the water-conducting space, and drawing a curtain line of the water-conducting space outside a mining disturbance damage range of the working face to be mined; arranging a plurality of first grouting holes between the curtain line and the burned rock, grouting the first grouting holes, and determining diffusion ranges of slurries with different concentrations; determining a slurry concentration corresponding to a second grouting hole and a diffusion range of a slurry corresponding to the slurry concentration, determining a spacing of the second grouting hole according to the diffusion range of the slurry corresponding to the slurry concentration; arranging a plurality of second grouting holes between the curtain line and the burned rock according to the spacing of the second grouting hole, and grouting the second grouting holes from the working face to be mined according to the slurry concentration corresponding to the second grouting hole. The application improves the accuracy of grouting plugging, reduces the grouting time, saves the amount of grouting slurry, and reduces the grouting cost.

The utility model discloses a solar module frame locking structure, including solar frame, pressing plate spare, U type card spare and bolt, its characterized in that: through pressing plate spare and U type card spare to the adjacent solar frame form the upper and lower compression, and utilize bolt and lock, pressing plate spare, including arched cover, arched cover is located the junction line just above of both sides solar frame, the both sides fixed of arched cover are pressed together section abutting on the upper portion of corresponding solar frame, and the screw is gradually tightened after screwing into the inside of the abdominal rib plate, so that arched cover forms certain lower pressure tight, so that the compression section and sealing strip of both sides are closely attached in solar frame top surface, and form effective sealing to solar frame top edge under the cooperation of waterproof convex rib, and such design not only guarantees the connection firmness and water -resistant effect of adjacent frame, can prevent the adjacent frame from displacement and vibration and cause sealing element to loosen the seam simultaneously.