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

Inactive Publication Date: 2008-01-16
盛天宝 +1
0 Cites 17 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Construction on the hanging pan, the grouting materials and personnel need to be lifted verticall...
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Abstract

The invention discloses a rapid injection technique to cavity among walls of compound shaft. The shaft is sectioned by injection in accordance with the frozen shaft depth, shaft wall thickness and strength and stratigraphic position of water-bearing bed, and the section has height of 100-200 m. When constructing inner layer shaft wall, pre-installing and pre-embedding a vertical sectioned injection pipe adaptable to the height of the injected section, a plurality of injection heads are equipped on the sectioned injection head and communicated with the cavity among walls of plastic interlayer, a plurality of injection points are formed at the same time at one section, the upper end of the sectioned injection pipe is connected with a delivery pipe, and the other end of the delivery pipe is connected with an injection pump via a connecting rubber pipe. The invention has the advantages of simple process, safe and reliable performance, high injection speed, high efficiency, and low cost. And, the occupied time of injection process to cavity among walls to the shaft construction is reduced by 60-90 percent, so as to shorten the shaft construction period.

Application Domain

Shaft sinking

Technology Topic

Image

  • Fast slip casting technique between composite well wall
  • Fast slip casting technique between composite well wall

Examples

  • Experimental program(2)

Example Embodiment

[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 5 is connected with the plastic interlayer wall 3, and multiple grouting points are simultaneously formed in a section height . The upper end of each segmented grouting pipe 6 is connected to each segmented long slurry pipe 8. Each segmented slurry pipe is preset and pre-buried in the inner well wall 4 and passes through the wellhead to expose the ground. Each segmented slurry pipe 8 The exposed end of the ground is connected to the grouting pump 10 through a connecting hose 11. When grouting, the grouting pump is connected to each segmented grouting pipe on the ground, and segmented upward grouting is adopted. In order to ensure the grouting effect, the number of passes and positions of the segmented grouting pipe 6 are determined according to the diameter of the wellbore 9 and the grouting requirements. The number of passes is generally 2-3 passes, and the positions are evenly arranged on the circumference of the wellbore. An observation hole 7 is provided on the upper part of each grouting section. One end of the observation hole is connected with the plastic interlayer wall 3, and the other end is connected with the wellbore 9 for observing the grouting effect and controlling the grouting pressure.

Example Embodiment

[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 of grouting heads 5, the spacing of the grouting heads is 5-7 meters, and the grouting heads 5 are connected with the plastic interlayer wall 3, and multiple grouting points are simultaneously formed within a section height. The upper port of each segmented grouting pipe 6 exposes the inner well wall at the upper part of the remark slurry section and is connected with the short slurry pipe 8. The other end of the slurry pipe 8 is connected to the grouting pump 10 on the suspension plate through the connecting hose 11 Connect, perform grouting, after filling a section, lift the hanging plate and inject another section. In order to ensure the grouting effect, the number of passes and positions of the segmented grouting pipe 6 are determined according to the diameter of the wellbore 9 and the grouting requirements. The number of passes is generally 2-3 passes, and the positions are evenly arranged on the circumference of the wellbore. An observation hole 7 is provided on the upper part of each grouting section. One end of the observation hole is connected with the plastic interlayer wall 3, and the other end is connected with the wellbore 9 for observing the grouting effect and controlling the grouting pressure.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Classification and recommendation of technical efficacy words

  • Prevent water leakage
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Quick insertion and removal fastener

InactiveUS6712574B1Improve overall strengthImproved configurationNutsBoltsFastenerLeaf spring
Owner:HONEYBEE ROBOTICS
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