2results about How to "Solve bleeding" patented technology

The utility model discloses novel drilling equipment for preventing slurry overflowing in directional drilling construction, which relates to the technical field of drilling equipment and comprises a slurry pump, a controller, a drilling machine, adjusting units arranged on two sides of the bottom end of the drilling machine and a detection unit arranged in the middle of the bottom end of the drilling machine. The adjusting unit comprises a fixing frame fixedly connected to the two sides of the bottom end of the drilling machine, a rotating assembly arranged in the fixing frame and an adjusting assembly arranged at the bottom end of the rotating assembly; the detection unit comprises a drill rod arranged in the middle of the bottom end of the drilling machine, a sensing assembly arranged in the drill rod and a tunneling assembly arranged at the bottom end of the sensing assembly. According to the novel drilling equipment capable of preventing the slurry from overflowing in the directional drilling construction, the pressure of the slurry at each position of the drilling rod is detected in real time and compared with the pressure of an overlying soil layer in a working place, meanwhile, the flow of the slurry pump is controlled to ensure that the slurry cannot overflow, and meanwhile, the drilling direction of a drilling machine can be stably adjusted.

This invention discloses a method for improving the interfacial bonding performance between the filler layer and the track slab, comprising: preparing a release cloth of the same size as the bottom plate of the track slab and capable of permeating and absorbing cement slurry on both sides; after vibrating and leveling the track slab concrete, laying the release cloth flat on the bottom of the track slab, allowing the slurry-rich layer on the surface of the track slab concrete to permeate into the release cloth, forming a dense cement slurry layer with strong adhesion; laying, fine-tuning, and sealing the bottom of the track slab with the release cloth bonded to it, and then pouring self-compacting concrete. During the pouring of the self-compacting concrete, the internal floating slurry permeates to the release cloth bonded to the bottom surface of the track slab, some of the water in the slurry is absorbed and evaporated by the release cloth, and the floating air bubbles are absorbed and broken at the release cloth, thereby increasing the density of the upper surface of the self-compacting concrete and forming a strongly bonded air bubble and water seepage slurry absorption layer with the release cloth. This invention can effectively improve the interfacial bonding performance between the filler layer and the track slab, and extend the service life of the track structure.