A Stress-deformation Feedback Support Structure of Steel Tube Concrete for Shaft Shaft

Abstract

The invention discloses a concrete-filled steel tube stress-deformation feedback support structure suitable for vertical shafts. This technology uses steel pipe and expansive concrete to form a combined support system, which realizes the controllable radial deformation of the support system, and achieves the purpose of safe support and reducing the effective lifting space of the wellbore occupied by the support system; at the same time, it is installed in the support system. The stress and deformation monitoring sensors can monitor and warn the safety state of the wellbore in real time. This technology has changed the problems of the traditional well ring back plate and shotcrete, such as insufficient supporting strength and occupying a lot of wellbore space, which affects safety improvement. High, real-time feedback and other multiple advantages.

Description

technical field [0001] The invention relates to a support structure for shafts of shafts, in particular to a stress-deformation feedback support structure of steel tube concrete suitable for shafts of shafts. Background technique [0002] The shaft of the shaft is the throat of the safe production of the entire coal mine. With the increase of the mining depth of coal resources, the depth of the shaft wall of the coal mine is also increasing. Cracks are inevitable at the interface between bedrock and surface soil, and these cracks are often accompanied by water seepage, which seriously affects the service life of the shaft wall structure and equipment in the shaft. When the amount of water is too large, it will even affect the safety of the entire mine. [0003] In order to ensure the safety of the well wall of the shaft, the engineering measures commonly used to control the cracking of the well wall are as follows: (1) the back plate of the well circle is reinforced, and the...

AI Technical Summary

Problems solved by technology

Solution (1) takes a long time to lift the wellbore, and the well ring reinforcement for the cracked well wall can only bear the passive load support effect is limited, and the corrosion of the channel steel and the large space occupation affect the effect of reinforcement

Solution (2) has a large amount of work and a long construction period. In order to achieve the strength of reinforcement, the thickness of the shotcrete occupies the space of the wellbore, which affects the safety improvement

Option (3) has a large amount of work, a long construction period, and high cost. The grouting of the well wall that has been severely cracked is also an important safety hazard for the safety of the well wall structure.

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