Construction method of high-pressure swing grouting water-stop curtain

A technology of water-stop curtain and construction method, which is applied in the direction of infrastructure engineering, construction, etc., can solve the problems of uneven ground settlement, waste, unsafety, etc., and achieve the effect of simple construction operation, convenient material selection, and reduction of waste and pollution

Inactive Publication Date: 2011-09-14
HUNAN NO 2 ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects that the ground water resources are seriously wasted and polluted by drilling the dewatering well and pumping the ground water out of the operation area during the construction of the deep foundation pit, causing uneven ground settlement and unsafe defects, the present invention aims to provide a high-pressure The pendulum spraying water-stop curtain construction method has a wide range of

Method used

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  • Construction method of high-pressure swing grouting water-stop curtain
  • Construction method of high-pressure swing grouting water-stop curtain
  • Construction method of high-pressure swing grouting water-stop curtain

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Embodiment Construction

[0045] A construction method for a high-pressure pendulum-spray water-stop curtain, comprising:

[0046] 1. Materials and Equipment

[0047] (1) Material

[0048] Before the cement enters the site, it is required to inspect the manufacturer. When each batch of cement enters the site, the cement factory quality inspection report and certificate must be provided with the vehicle. The cement must meet the PO32.5 grade in the national standard GB175-2007 "General Portland Cement". After the cement arrives at the site, different batches or the same batch must be sampled for every 200 tons. Sampling must be carried out under the supervision of a supervisory engineer (witness), and the storage and storage of cement should be moisture-proof. The cement slurry water-cement ratio is preferably 0.8:1.

[0049] (2) Machinery and equipment as shown in Table 1

[0050] Table 1 selected machinery and equipment

[0051]

[0052] 2. Construction technical parameters

[0053] Before fo...

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Abstract

The invention relates to a construction method of a high-pressure swing grouting water-stop curtain, belonging to the method of building construction. The method comprises the following steps of: staking out in survey, positioning a drilling rig, installing and locating the drilling rig, boring, treating an orifice and grouting. The grouting process comprises the following steps of: a. trying to spray a ground; b. injecting to a spraying tool; c. stirring cement slurry; d. injecting air and water at high pressure and grouting at low pressure; e. completing grouting; and f. cleaning. The construction method has the characteristics of wide application range, convenience for getting materials, simplicity and convenience for construction operation, higher construction speed, reliable construction quality and economy and reasonability. The construction method of the high-pressure swing grouting water-stop curtain can better prevent ground water from entering a construction region, reduce the waste and the pollution of ground water resources to the maximum degree, protect ground water resources, maintain the balance of the ground water resources, ensure the safety of peripheral buildings and structures and meet the requirement for green construction.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method of a high-pressure pendulum spraying water-stop curtain. Background technique [0002] During the construction of deep foundation pits, it is often necessary to take technical measures to prevent the groundwater system from flowing into the foundation pit. The usual method is to drill dewatering wells around the building foundation pit to pump groundwater out of the work area, but this method causes serious waste and pollution of groundwater resources, and will cause uneven ground settlement, affecting the safety of surrounding buildings and structures. Contents of the invention [0003] In order to overcome the defects that the ground water resources are seriously wasted and polluted by drilling the dewatering well and pumping the ground water out of the operation area during the construction of the deep foundation pit, causing uneven ground settlement an...

Claims

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Application Information

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IPC IPC(8): E02D19/12E02D19/18E02D15/04
Inventor 李永迪谭粮好李再春吴东红李进
Owner HUNAN NO 2 ENG
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