Dewatering construction method for near-lake superfine sand soil foundation pit
A construction method and technology of ultra-fine sand, which are applied in basic structure engineering, excavation, construction, etc., can solve the problem of not ensuring that the dewatering well does not shift and collapse, and achieve a good safety production atmosphere, ensure the precipitation effect, and a good society. The effect of reputation
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Embodiment 1
[0023] Embodiment 1: as figure 1 Shown, a kind of superfine sandy soil foundation pit dewatering construction method near the lake comprises the following steps:
[0024] Step 1: Through calculation, drill holes outside the slope of the ultra-fine sandy soil foundation pit in the basement. The diameter is the diameter of the sand-free concrete permeable pipe plus 600mm, and must reach the depth determined by calculation;
[0025] Step 2: Wrap a single layer of anti-corrosion dense mesh filter cloth outside the sand-free concrete permeable pipe;
[0026] Step 3: Install the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosion dense-mesh filter cloth in sequence, and wrap a double layer of anti-corrosion dense-mesh filter cloth between two sections of sand-free concrete permeable pipe;
[0027] Step 4: After the installation is completed, fill the filter material around the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosio...
Embodiment 2
[0031] Embodiment 2: on the basis of embodiment 1: as image 3 with Figure 4 Shown, a kind of superfine sandy soil foundation pit dewatering construction method near the lake comprises the following steps:
[0032] Step 1: Through calculation, drill holes outside the slope of the ultra-fine sandy soil foundation pit in the basement. The diameter is the diameter of the sand-free concrete permeable pipe plus 600mm, and must reach the depth determined by calculation;
[0033] Step 2: Wrap a single layer of anti-corrosion dense mesh filter cloth outside the sand-free concrete permeable pipe;
[0034] Step 3: Install the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosion dense-mesh filter cloth in sequence, and wrap a double layer of anti-corrosion dense-mesh filter cloth between two sections of sand-free concrete permeable pipe;
[0035] Step 4: After the installation is completed, fill the filter material around the sand-free concrete permeable pip...
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