Compacting grouting and reinforcing technology for floor foundation of fly ash soil layer and backfilled stone layer in smelting workshop

Abstract

The invention discloses a compacting grouting and reinforcing technology for floor foundation of fly ash soil layer and backfilled stone layer in smelting workshop, comprising the following steps of (1) measuring hole positions: measuring hole positions and marking hole positions; (2) inserting pipes: adopting metal pipes with a plug for grouting pipes, configuring the total number of the grouting pipes needed by a single hole according to the designed hole depth; aligning the first section of grouting pipe with the installed plug to the hole position; installing a vibrator and leading the grouting pipe to be vibrated into the soil slowly; subsequently jointing a second section by a movable hoop and vibrating the second section into the soil; repeatedly carrying out the steps till all prepared grouting pipes are inserted; (3) preparing grout: adopting cement as a main material to prepare the grout by adding water, with the water-cement ratio controlled within 0.5:1-1:1; and (4) grouting: grouting from bottom to top; leading the pipe pulling height not to exceed 0.4m; ensuring uniform grouting at the grouting section and controlling the grouting amount within 15-20% per cube meterof the reinforced soil volume. The compacting grouting and reinforcing technology can be conveniently executed under the disadvantageous environments of crossed construction of multi-specialty and multi-type of work and extremely strained construction lands, and meets the requirement of working procedure interpenetration during the floor foundation construction inside the smelting workshop under the geometrical conditions of fly ash soil layer and backfilled stone layer.

Description

technical field [0001] The present invention relates to a kind of complicated weak foundation reinforcement treatment technology, especially relates to a kind of compaction grouting reinforcement technology used for the fly ash soil layer of the smelting workshop and backfilling the rock layer foundation, and can be used in iron and steel, non-ferrous metals, gold, It is widely used in the reinforcement treatment of chemical and other industrial plants and workshop floor foundations. Background technique [0002] For factory buildings in soft soil areas, if effective ground treatment measures are not taken during the design or construction stage, large-area land subsidence will easily occur after completion and affect normal production. Most of the methods currently used are pile foundation, gravel replacement, cement-soil pile and so on. [0003] At present, the reinforcement treatment of the floor foundation in the workshop of the metallurgical industry generally adopts t...

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Problems solved by technology

[0005] The purpose of the present invention is to aim at the above-mentioned defects existing in the prior art, and to provide a kind of compaction and grouting reinforcement process for the fly ash soil layer of the smelting workshop and the backfilling of the rock layer floor foundation, which can not only strengthen the fly ash soil layer and backfill rocky layer foundations, improve the bearing capacity of the soil and reduce the settlement and deformation of the foundation, and can easily carry out normal construction in the case of multi-professional, multi-work and very tight construction land

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