Hard rock layer rotary jet mixing device

Abstract

The invention discloses a hard stone layer rotary jet stirring device. The hard stone layer rotary jet stirring device is characterized by comprising three grout spraying drilling pipes and a broken stone drilling pipe, each grout spraying drilling pipe is provided with a spiral rib, and a grout injection pipe is arranged in each grout spraying drilling pipe; each grout injection pipe is fixed to the corresponding grout spraying drilling pipe through a top positioning clamp of the corresponding grout spraying drilling pipe, a flow valve is arranged between each grout injection pipe and a grout inlet pipe to control flow, and the grout injection amount can be adjusted according to the situation of the soil texture of the position where the grout spraying drilling pipes are located; the grout spraying drilling pipes are connected with power equipment in a power device; a one-way valve is arranged at the lower portion of the part, in each drilling pipe, of the corresponding grout injection pipe; the broken stone drilling pipe is provided with a spraying pipe, a high-temperature flame sprayer is arranged at the front end of the spraying pipe, an igniter is arranged at the rear end of the spraying pipe and connected with an oil conveying pipe, and the oil conveying pipe communicates with an oil storage tank in the power device; and the grout spraying drilling pipes are provided with guiding steel plates, and guiding steel rings are arranged on the outer sides of the grout spraying drilling pipes.

Description

technical field [0001] The invention relates to a rotary spray stirring device, in particular to a rotary spray stirring device for a hard rock layer. Background technique [0002] Cement mixing jet grouting piles have been widely used in engineering fields due to their low cost and convenient construction. In particular, cement mixing jet grouting piles are widely used in water-stop curtains. However, due to the limited drilling capacity of the drilling rig itself, it cannot be used when encountering hard rock layers. In some engineering areas, there may be hard rock interlayers in the shallow part of the basement support. How to use a good water-stop curtain is a difficult problem for engineering personnel. If the cement mixing jet grouting pile cannot be applied to the hard rock layer Obviously, there will be good engineering benefits. In addition, the cement mixing rotary grouting pile construction equipment is relatively light, and often tilts during the construction p...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a rotary spray mixing device for hard rock layers, which solves the problem of overcoming the limitation and inclination that cement stirring rotary spray piles cannot be applied to hard rock layers

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