Channel plate underwater grouting stabilizing and lifting method
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A channel and grouting technology, applied in the field of channel slab reinforcement and repair, can solve the problems of channel slab subsidence and sliding damage, difficult cement stabilization and uplift, gravel and sand layer taking away, etc., to achieve rapid repair and anti-seepage reinforcement, prevent Loosening and sliding damage, good fluidity
Active Publication Date: 2020-10-09
SAFEKEY ENG TECHZHENGZHOU
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Therefore, the repair and treatment of channel slabs is particularly important. The conventional method is to replace damaged or subsided channel slabs. However, when replacing or repairing underwater, traditional cement is difficult to stabilize and lift. Under the scouring and erosion of water, the replaced and repaired channel slab will sink, slip and be damaged, and the gravel and sand layer under the channel slab will also be taken away by the water body, seriously affecting the safety of the channel
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Embodiment 1
[0047] Embodiment 1, this embodiment takes the replacement of a damaged channel plate underwater as an example, for specific methods see figure 1 , image 3 , the specific construction process is as follows:
[0048] Step a, clean up the silt on the surface of the damaged channel board and the caulking materials in the joints, take out the damaged channel board, clean up the bonding material on the surface of the crushed stone layer, and level the crushed stone layer, take a new channel plate to be drilled, in accordance with image 3 Arrange the grouting holes, bind the geotextile bags on the grouting conduits, place the grouting conduits with geotextile bags in the grouting holes at the four corners of the channel plate, and place the grouting conduits without geotextile bags in the grouting holes in the middle of the channel plate , place the channel plate with the grouting conduit on the gravel layer;
[0049] Step b, adjust the grouting equipment, first fill the geotex...
Embodiment 2
[0052] Embodiment 2, this embodiment takes the example of lifting the channel plate that sinks underwater, and the specific method can be found in figure 2 , image 3 , the specific construction process is as follows:
[0053] Step a, drill holes on the channel plate, according to image 3 Arrange the grouting holes, and place the grouting conduit on the channel plate;
[0054] Step b. Adjust the grouting equipment. First, grout the four corners of the channel plate in a diagonal form, and finally grout in the middle position. Since it takes 10-20 seconds for the polymer grout to fully expand, it needs to be injected every time. Stop and observe for 10 seconds, and stop grouting until it is flush with the original channel plate;
[0055] Step c, use a pipe cutter to cut off the excess grouting conduit, and smooth the incision with a file;
[0056] Step d: Clean excess polymer spilling from the seam on the channel plate.
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Abstract
The invention relates to the technical field of channel plate reinforcing and repair in water conservancy projects, in particular to a channel plate underwater grouting stabilizing and lifting method.The method comprises the steps that a, regarding a channel plate that is already damaged, the damaged channel plate is dismounted first, a gravel layer under the channel plate is cleaned and levelled, and then a new channel plate where grouting guide pipes are well placed is placed on the gravel layer, wherein geotechnical cloth bags are bound under the grouting guide pipes located at the side portions of the channel plate; and regarding a channel plate that is not damaged but sinks, grouting guide pipes are mounted in grouting holes that are reserved or drilled on the spot in the channel plate correspondingly; b, high polymer grouting is performed through the grouting guide pipes located at the side portions of the channel plate, and then high polymer grouting is performed through the grouting guide pipes located in the middle of the channel plate; c, the portions, exposed out of the channel plate, of the grouting guide pipes are cut off through a pipe cutter, and notches are repaired to be level; and d, excessive high polymer on the channel plate is removed. By means of the method provided by the invention, a channel plate that is damaged underwater or that sinks can be fast repaired and impermeably reinforced, and technical guidance is provided for safe operation of a water conveyance channel.
Description
technical field [0001] The invention relates to the technical field of reinforcement and repair of channel slabs in water conservancy projects, in particular to an underwater grouting stabilization and lifting method for channel slabs. Background technique [0002] With the continuous development of my country's economic strength and scientific and technological level, the rational dispatch and regulation of water resources has become a major national strategy. Especially in recent years, with the opening and operation of the South-to-North Water Diversion Middle Route Project and the strengthening of urban river regulation in my country, the protection of water delivery channels has become particularly important. However, in the existing channels in operation, the most common diseases are the subsidence and cracking of channel plates. Of course, as the first protective layer of the canal, the damage of the canal slab will also intensify the erosion and seepage damage of th...
Claims
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Application Information
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