Induced-type grouting construction method

A construction method and grouting technology, which are used in infrastructure engineering, soil protection, construction, etc., can solve the problem that the slurry in the closed stratum cannot be fully poured, the grouting effect cannot be achieved, and the slurry in the high-flowing water stratum is easily flowed by groundwater. problems such as flushing and scattering, to achieve the effects of simple operation, high grouting efficiency and high economic efficiency

Inactive Publication Date: 2019-09-06
GUANGXI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the high-pressure jet grouting technology and the static pressure grouting technology used in the existing formation grouting in the prior art, which cannot fully inject the grout in the closed formation, or the grout in the high-flowing water formation is easily destroyed. Flowing groundwater scours away the above-mentioned deficiencies that cannot achieve the expected grouting effect. An induced grouting construction method is provided.

Method used

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Embodiment 1

[0045] For such as figure 1 The closed stratum shown in the closed stratum is the stratum in which the four sides of the soil body 1 to be reinforced by grouting are support structures 2, and the upper and lower sides of the soil body 1 to be reinforced by grouting are the strata of the impermeable layer 3. An induced grouting construction method comprises the following steps:

[0046] A, design the grouting hole 4 on the soil body 1 to be grouted and strengthen, set the pumping hole 5 outside the grouting diffusion range of the designed grouting hole 4, and drill the pumping hole 5;

[0047] B, water pumping equipment is set, and described water pumping equipment comprises suction pipe 9 and the suction pump 10 that is connected with it, and described suction pump 10 is arranged on the ground, and described suction pipe 9 stretches in the described suction hole 5, and described suction pipe 9 The water intake of the water tank is lower than the groundwater level7;

[0048] ...

Embodiment 2

[0054] For such as figure 2 As shown in the high flow water formation, the high flow water formation is the formation where the groundwater flow rate in the soil body 1 is to be grouted and reinforced, and a kind of induced grouting construction method according to the present invention comprises the following steps:

[0055] a, design the grouting hole 4 on the soil body 1 to be grouted and strengthen, set the pumping well 6 outside the grouting diffusion range of the designed grouting hole 4, drill the pumping well 6, along the groundwater flow direction 8, The pumping well 6 is located upstream of the grouting hole 4;

[0056] B, pumping equipment is set, and described pumping equipment comprises suction pipe 9 and the submersible pump 11 that is connected with it, and described submersible pump 11 is arranged in described pumping well 6, and the bottom of the pump of described submersible pump 11 is lower than groundwater level 7 and below the grouting depth;

[0057] c...

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Abstract

The invention discloses an induced-type grouting construction method. The induced-type grouting construction method is suitable for closed strata and comprises the following steps that A, a grouting hole is designed on a soil body to be grouted and reinforced, a pumping hole or a pumping well is arranged outside the grouting diffusion range of the grouting hole, and the pumping hole or the pumpingwell is formed by construction; B, pumping equipment is arranged, and the pumping port in the pumping hole or the pumping well is lower than the groundwater level; C, the grouting hole is formed by construction, and grouting equipment is arranged; D, the pumping equipment is started to pump water by the pumping hole or the pumping well, meanwhile the grouting equipment is started to grout by thegrouting hole, until the design final grouting standard is reached, and grouting of the grouting hole is completed; and E, the steps A to D are repeated until all the grouting holes in the expected grouting area are grouted. The construction method is simple and convenient in operation, high in economic efficiency and high in grouting efficiency, and it is guaranteed that the grouting effect meetsthe expected requirements.

Description

technical field [0001] The invention relates to the construction field, in particular to an induced grouting construction method. Background technique [0002] Ground grouting is used for foundation reinforcement or dam reinforcement in house construction and bridge construction in weak ground areas; according to years of construction experience and actual engineering results, the ground reinforcement process has a significant effect on improving the bearing capacity of the foundation and improving the deformation performance of the foundation effect, so it is widely used. [0003] The existing stratum grouting mainly adopts high-pressure jet grouting technology or static pressure grouting technology; high-pressure jet grouting technology uses the principle of high-pressure water jet cutting, which can make loose soil particles fall off and allow the soil to blend with the grout, thereby consolidating the building The static pressure grouting technology uses the principle o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D3/10
CPCE02D3/10E02D3/12
Inventor 梅国雄张振郑皆连梁雨
Owner GUANGXI UNIV
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