Date of issue:2021-11-12 General view:152
We all know that side slope quicksand can cause slope collapse, which is a terrible thing and threatens people’s lives and property. Therefore, we must suppress the quicksand phenomenon on the slope. So what is the most effective measure to treat side slope quicksand?
The flexible protective net is the most effective measure to suppress the shifting sand scene: the excavation of the foundation pit drainage, assuming direct surface drainage, the soil will be driven upwards and the shifting sand scene can occur. Then the bottom is digging the earth and the water is gushing. It is impossible to remove the precipitation or other methods. Directly drain 9 well points for precipitation. Various methods of precipitation are artificially lowered the groundwater level. Well point precipitation not only increases the pressure gradient, but also changes the groundwater activity. Tendency to activities, so that there are only a variety of different sedimentation methods. The nature of the project, the depth of excavation, soil characteristics, economics and other factors should be considered. Shallow foundation pits, shallow foundation pits, less than 4% shallow and light well points are the most economical and deep Radiation wells should be considered for foundation pits, and comprehensive dewatering of large deep foundation pits should be considered. Compare with deep wells, irrigation wells and light, and various inconsistent plans, determine the most useful dewatering plan. To avoid or limit the seepage of groundwater to the pit, use a flexible side slope protection mesh stone curtain; sometimes it is also necessary to rain water and soil mixing piles inside or outside the curtain to continue a circle of water and soil mixing piles. Flexible protection nets are the most commonly used The anti-seepage and water-stop structure, water and soil retaining walls can also carry forward the consequences, in stalemate and sealing, bored piles, pile retaining, water and soil mixing piles to stop water.
If we install flexible slope protection nets on the slopes, there will be no quicksand phenomenon, no slope collapse, that is, no loss to people’s personal safety, so the installation of protection nets is right to the side Slope quicksand is the most effective measure.
Analysis and construction steps before installing the protective net
Before installing the side slope protection net, we need to conduct some serious analysis. If the analysis is not sufficient, it will make the follow-up work difficult to progress. So what points should we pay attention to? Construction steps with slope protection net:
Slope protection net
1. Slope cutting of the side slope, of course, cutting the slope is not necessary, but it is necessary to cut the slope in the following cases.
1) When installing slope protection nets, especially when installing active protection nets, construction workers will shuttle on the slope. If there are some dangerous rocks or pumice on the slope, it is necessary to cut the slope. If it is not handled, it may cause rocks to fall and collapse, which will directly bring great danger to the workers of the slope protection net.
2) If there are some relatively large dangerous rocks on the slope, even if it will not roll or collapse in a short time, it will collapse for a long time. Once it collapses, it will affect the protection effect and protection life of the slope protection system.
3) Although the installation of the slope protection net has great flexibility, it also has a certain range. If the protruding demonstration in a certain area is very obvious, and the anchor rod is not on the agreed horizontal line with other places when fixing the anchor rod, it will cause the installation to be uneven.
Therefore, necessary slope cutting work is required in the above situation.
2. To install the slope protection net, first determine the position of the anchor rod. Whether the position is correct is related to the protection effect of the slope protection net. So how to determine the location of the anchor rod? We need to obtain data through instrument measurement, and then determine the fixed position of each bolt. Whether the anchoring ability of the anchor rod is good or not is directly related to the protection net effect of the slope protection net. Anchor rods are usually installed on hard rocks. If the anchoring position is a soil slope, we need to fix it by pouring.
3. It is also very important to install the support rope, because the wire rope net needs to be sewn to the support rope. The tightness of the support rope should be verified and should not be over-sent or over-tight. To fix the support rope on the anchor rod, you need the help of the rope clamp. The support rope and the exposed anchor rod are fixed and spliced by the rope clamp.
4. After that is the work of hanging the net and stitching. We have already described it very clearly before. Friends who are interested can read the previous technical articles. We will not introduce them in detail here.
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