Fast slip casting technique between composite well wall
A technology of grouting and shaft wall, which is applied in sinking, shaft equipment, mining equipment, etc., can solve the problems of poor safety conditions, high cost, and low efficiency, and achieve the effect of fast grouting speed, low cost, and high efficiency
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[0010] Example 1
[0011] As shown in Figure 1, the composite well wall is composed of an outer well wall 2, an inner well wall 4, and a plastic interlayer wall 3. The grouting pump 10 is fixed on the surface of the wellhead. Before grouting, the wellbore is grouted into sections according to the depth of the frozen wellbore, the thickness of the well wall, the strength, and the aquifer layer. Generally, the wellbore is divided into 1-4 grouting sections. The section height is generally 100-200m. When the inner shaft wall 4 is constructed, the vertical segmented grouting pipe 6 is preset and pre-embedded to match the height of the grouting segment, and the segmented grouting pipe 6 is set in it. In the well wall, preset and pre-embedded vertical segmented grouting pipes are carried out sequentially from above the wall seat 1 and upwards. The segmented grouting pipe 6 is provided with a number of grouting heads 5, the spacing of the grouting heads 5 is 5-7 meters, the grouting head...
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[0012] Example 2
[0013] As shown in Figure 2, the composite well wall is composed of an outer well wall 2, an inner well wall 4, and a plastic interlayer wall 3. The grouting pump 10 is fixed on the suspension plate 13 in the wellbore 9. The suspension plate 13 is drawn by four suspension steel ropes 12. Before grouting, the wellbore is injected according to the depth of the frozen wellbore, the thickness of the well wall, the strength, and the aquifer layer. Grout segmentation, generally divide the wellbore into 2-3 grouting segments, and the segment height is generally 100-200m. When constructing the inner shaft wall 4, preset, pre-buried and grouting segment heights are compatible The vertical segmented grouting pipe 6 and the segmented grouting pipe 6 are arranged in the inner well wall 4, and the preset and pre-embedded vertical segmented grouting pipes are carried out from above the wall seat 1 and upward in sequence. The segmented grouting pipe 6 is provided with a number...
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