Grouting equipment and machinery for United Arab Emirates
Grouting equipment and machinery is to press
the solidified liquid into the gap between the formation and the structure
under a certain pressure, and to fill and solidify, so as to improve the
performance of the formation and structure, and to strengthen and stop the
water. The process of injecting slurry into the soil is generally first
infiltrated. When the passage is blocked, the slurry is difficult to penetrate,
that is, the surrounding formation is compacted. When the pressure continues to
rise, the soil is cleaved, and the slurry further spreads along the crack.
Infiltration, compaction and splitting affect each other and complement each
other, which together play a role in improving soil integrity and strength and
reducing formation permeability and water content. Permeate grouting is the
filling of voids or fissures, the release of free water and gas in the pores,
without changing the structure of the soil. The method of diffusion depends on
the way the grout is made. The end point grouting is spherical diffusion, and the
flower tube section grouting is cylindrical diffusion.
Splitting grouting equipment for United Arab
Emirates is to overcome the initial stress of the stratum and the tensile
strength of the rock mass by pressure, so that new fissures appear in the stratum,
and the slurry fills the fissure. Press-tight grouting forms a slurry around
the grouting point and compacts the soil. Electro-chemical grouting is a
combination of electro-osmotic drainage and grouting method. In the formation
with small permeability coefficient, through electro-osmosis, water flows from
the anode (around the grouting pipe) to the cathode (filter pipe), and the
slurry fills the gap.
According to the purpose and function of
grouting. Grouting machine for UAE can be divided into water blocking grouting
and reinforcement grouting. According to the order of the work, it can be
divided into pre-grouting and post-grouting. The purpose of water shutoff and
grouting is to block the groundwater from intruding into the working surface
and facilitate construction. His requirement for slurry is that the gel time is
short and can be easily and accurately controlled within a certain range, but
it does not require high strength and is suitable for strata with hard stone
and high water content. The purpose of reinforced grouting is mainly to
reinforce the surrounding rock, so that a certain range of surrounding rock is
cemented into a force ring, which has higher requirements on the strength of
the stone of the slurry, but the gel time is not strict, and it is suitable for
the formation.
Weakly broken, less groundwater. Pre-grouting can be divided
into ground pre-grouting (or vertical pre-grouting) and pre-grouting in the
hole (or horizontal pre-grouting). The pre-grouting has higher safety and less
disturbance to the process (such as pre-grouting in the hole or pre-grouting in
the working face, it takes up one working surface), and is suitable for large-scale
high-pressure water blocking or reinforced grouting. Post-grouting refers to
grouting after excavation. It is easy to operate and has obvious effects. It is
suitable for general anti-seepage and plugging. What kind of grouting should be
used should be based on hydrology and engineering geological conditions,
grouting purposes and requirements, etc., using various grouting for safety,
technology and economic comprehensive comparison.
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