A kind of ice expansion method of rock and soil mass

Abstract

The invention discloses an ice expansion broaching method for a rock-soil body. The ice expansion broaching method comprises the steps that the soil body needing to be broached is drilled, a columnarcapsule is put into a drilled hole, and a certain quantity of freezing media are injected into the columnar capsule; the freezing media are frozen quickly by a quick freezer, thus the freezing media at the bottom of the columnar capsule are expanded after being condensed, after volume expansion of the columnar capsule, the bottom of the drilled hole is expanded to be open, and the drilled hole isbroached; and after broaching, the freezing media are melted, and then melted waste liquid is drained out of the drilled hole. The technology is easy and convenient to operate and rapid in construction, the broaching efficiency is significantly improved, the defects that traditional broaching equipment is numerous, operation is complicated, the occupied area is large, the construction period is long, and a large quantity of manpower and material resources are spent are effectively overcome, and the economic loss is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of bolt support in geotechnical engineering, in particular to an ice expansion method for rock and soil mass. Background technique [0002] In recent years, a large number of researches have been carried out on the improvement of traditional bolts in the field of rock engineering at home and abroad. Including: geotextile anchor, the fabric anchor can extrude the soil above the anchor plate under the action of tension to form a geotextile inclusion, so as to mobilize the soil in a large range to participate in the work and increase the foundation pull-out resistance The self-expanding anchor model realizes the self-expansion of the anchor head in the soil as an enlarged head, and the pull-out test shows that its pull-out resistance is greatly improved compared with the traditional anchor rod. Similar research results include conical bolts, spiral blade bolts, and shell bolts. Therefore, increasing the stres...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned engineering problems, the present invention provides a method and construction method for ice expansion of rock and soil. This process is easy to operate, fast in construction, and greatly improves the efficiency of hole reaming, effectively solving the complicated operations of traditional hole reaming equipment. The disadvantages of complexity, large floor area, long construction period and costing a lot of manpower and material resources greatly reduce economic losses

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