Follow-up type high-efficiency water-stop and sand-hindrance precipitation complex system and its construction method

A composite system and water-stopping technology, which is applied in excavation, infrastructure engineering, special data processing applications, etc. Settlement, easy construction operation, large volume effect

Active Publication Date: 2018-01-16
TONGJI UNIV
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Most of the above technologies are a single system, and have not formed a complete composite system
In addition, in the above-mentioned technologies, the volume of the water-stop curtain is large, and the buried depth of t

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Follow-up type high-efficiency water-stop and sand-hindrance precipitation complex system and its construction method
  • Follow-up type high-efficiency water-stop and sand-hindrance precipitation complex system and its construction method
  • Follow-up type high-efficiency water-stop and sand-hindrance precipitation complex system and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A follow-up high-efficiency water-stopping and sand-blocking precipitation composite system, such as Figure 1-3 As shown, it is used for the prevention and control of ultra-deep foundation pit dewatering and ground subsidence, including the dewatering well 3 located in the foundation pit. The well pipe of the dewatering well 3 is equipped with a percolation device 7 with the function of reducing resistance and collecting water. A submersible pump is provided to drain water to the external drainage ditch 2, a sand filter material layer 6 is set outside the well pipe of the dewatering well 3, a mobile follow-up water-stop curtain 4 is set in the foundation pit, and a settlement observation point is set on the outer edge of the foundation pit 1. An open seepage drainage well 5 is set on the inner side of the mobile follow-up water-stop curtain 4 . Wherein, the dewatering well 3 is annularly arranged on the outside of the movable follow-up water-stop curtain 4, the inner d...

Embodiment 2

[0060] A mobile follow-up high-efficiency water-stopping and sand-blocking precipitation compound system and its construction method are located in Hushan Town, Rizhao City. The ultra-deep foundation pit is a swirl pool under construction by Rizhao Iron and Steel Co., Ltd., which is inscribed by a circle with a diameter of 16.60m and a circle with a diameter of 12.925m. , The pool wall thickness is 1m.

[0061] According to the "Swirl Pool and Hot Rolling Workshop Supplementary Survey Report of Rizhao Iron and Steel Co., Ltd. - Geotechnical Engineering Survey Report", the hydrogeological conditions on which the tube well dewatering design is based are mainly reflected as follows:

[0062] (1) Stratum structure: the thickness of the Quaternary covering layer in the field is less than 25m, and each layer from top to bottom is Quaternary Holocene silty clay, fine-medium sand, silty silty clay, Pleistocene silty clay, medium Coarse sand, Proterozoic weathered granite gneiss.

[...

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

PUM

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Lengthaaaaaaaaaa
Filter hole diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a follow-up type high-efficiency water-stop and sand-hindrance precipitation complex system and its construction method. The system is suitable for all unconfined aquifers andconfined aquifers. The complex system includes a precipitation well, an infiltration-filtration device arranged in a well pipe of the precipitation well, a sand filter layer which the outside of thewell pips is filled, a follow-up type moving water-stop heavy curtain, a waterway-drain seepage well and a settlement observation point; the precipitation well is arranged in an annular mode along theedge of a foundation pit, and the infiltration-filtration device is composed of plum-blossom shaped distribution holes and steel wire gauzes with which the outsides of the plum-blossom shaped distribution holes are coated; the follow-up type moving water-stop and sand-hindrance heavy curtain is placed on the inner side of the precipitation well in an annular mode; the waterway-drain seepage wellis formed on the inner side of the heavy curtain, and the settlement observation point is arranged on the edge of the foundation pit. According to the system and the construction method, foundation-pit precipitation, infiltration-filtration water collection, underground water stop, grit eroding and pipe gush prevention, and settlement prevention and control technology are integrated into a whole system, the structure is flexible, precipitation is high in efficiency, the collaborative linkage property is good, the building cost of projects is low, the application range is wide, and surface subsidence and other engineering hazards caused by grit eroding and pipe gush can be effectively prevented.

Description

technical field [0001] The invention belongs to the field of foundation pit dewatering, and in particular relates to a follow-up high-efficiency water-stopping and sand-blocking dewatering composite system and a construction method thereof. Background technique [0002] With the rapid development of my country's urban infrastructure construction, the scale of buildings (structures) is becoming larger and larger, especially the construction safety of ultra-deep foundation pits in engineering construction has generally been paid attention to. Existing engineering construction data show that large-scale, large-scale, and long-term precipitation is required for ultra-deep foundation pits. However, the implementation of this precipitation project will cause serious harm to the surrounding geological environment. Therefore, how to improve the dewatering efficiency of ultra-deep foundation pits, effectively implement settlement prevention and control, ensure the safety of the ultra...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02D19/10E02D19/18E02D17/02G06F17/50
Inventor 周念清张雯沈超
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap