Method for dewatering large-area foundation pit on silt stratum

A large-area, foundation pit technology, used in infrastructure engineering, construction, etc., can solve the problems of high cost and low dewatering efficiency of light wells, and achieve the effects of short construction period, improved dewatering efficiency and low cost.
CN102535489AInactive Publication Date: 2012-07-04HEBEI CONSTR & INVESTIGATION RES INST
4 Cites 27 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI CONSTR & INVESTIGATION RES INST
Publication Date
2012-07-04
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a method for dewatering a large-area foundation pit on a silt stratum, which belongs to modification of existing methods of dewatering light well points and includes the steps: firstly, setting well points, and determining spacing and depth of the well points according to dewatering depth and dewatering area; secondly, constructing the well points; thirdly, installing a dewatering system; fourthly, cleaning up wells; fifthly, operating the dewatering system to pump water; sixthly, regionally repeating the steps from one to five for dewatering a large-area foundation pit, lowering the water level to an expected depth, and maintaining the water level; seventhly, dismantling the dewater system within the foundation pit, maintaining the system to operate until the foundation pit is backfilled above the underground water level, and maintaining the underground water level to meet demands during construction; and eighthly, dismantling the foundation pit and maintaining the dewatering system. Mutual coupling among the well points is fully utilized, so that dewatering efficiency is improved. Compared with conventional light well point dewatering methods, the method is short in construction period, low in manufacturing cost and effective.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for dewatering large-area foundation pits in silt soil strata, and belongs to the technical field of building foundation treatment. Background technique

[0002] In the field of engineering construction, it is often necessary to lower the groundwater level first during foundation construction, and dewatering at foundation pit well points is a more commonly used dewatering method. There are many methods of dewatering well points in foundation pits, and commonly used methods include tube well well points, light well points, jet well points, and electroosmotic well points. Dewatering in silty soil strata is one of the difficulties in dewatering projects at present. If tube wells are used, the dewatering effect will not be ideal. Although jetting wells and electroosmotic wells can solve the problem of dewatering, the construction process is relatively complicated and the cost is high. In the prior art, the light well poin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More