A Design and Construction Method of High Polymer Grouting Excavation Support Structure for Small Diameter Shaft

A supporting structure and high polymer technology, applied in infrastructure engineering, excavation, construction, etc., to achieve superior economic indicators, fast construction, safe and reliable structure

Active Publication Date: 2017-10-17
SAFEKEY ENG TECHZHENGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the excavation and support structure of shaft high polymer grouting in China

Method used

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  • A Design and Construction Method of High Polymer Grouting Excavation Support Structure for Small Diameter Shaft
  • A Design and Construction Method of High Polymer Grouting Excavation Support Structure for Small Diameter Shaft
  • A Design and Construction Method of High Polymer Grouting Excavation Support Structure for Small Diameter Shaft

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Embodiment

[0038] The present invention will be further described below in conjunction with accompanying drawing.

[0039] A design and construction method for polymer grouting excavation and support structures for small-diameter shafts, characterized in that, in the design of excavation and support for small-diameter shafts, polymer grouting technology is introduced for the first time, with the help of polymer materials Rapid expansion, rapid cementation and solidification, and water-stop characteristics can complete the creep control of the soil on the side wall of the shaft, and are more suitable for the excavation of shafts in soft soil areas. After completing the design and calculation work according to the relevant data, the construction of the support structure will be carried out. The construction process specifically includes the following steps:

[0040] (1) The construction of micro support piles, the specific steps are as follows:

[0041] (1) Micro support pile processing:...

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Abstract

The invention relates to a design construction method of a small-diameter shaft high polymer grouting excavation support structure. The method comprises the following steps: (1) micro support piles are constructed; (2) a small-diameter shaft is excavated; and the side wall high polymer grouting is constructed in a closed manner; (3) lining structures between the micro support piles are constructed; and according to an excavation depth and a calculation result, the lining structures are constructed between the micro support piles; (4) the layered and segmented excavation is vertically performed in sequence; the steps (2) and (3) are repeated to construct to reach a designed depth; and the construction of the small-diameter shaft high polymer grouting excavation support structure is finished; and (5) after the support structure finishes the use function, the recovery work of the support structure can be performed along with beginning of the backfill work. The constructed support structure system has such advantages as safety, reliability, fast construction, advanced technology, recycling capacity and excellent economic index.

Description

technical field [0001] The invention belongs to the technical field of excavation and support of small-diameter shafts in civil engineering, water conservancy, mining, municipal and other infrastructure facilities, and specifically relates to the excavation and support of small-diameter shafts with high polymer grouting for small-diameter shaft construction projects in the above-mentioned fields Structural design and construction methods. Background technique [0002] Since the founding of New China, my country's civil engineering, water conservancy, mining, municipal and other infrastructure construction have achieved world-renowned achievements. In the process of underground space utilization and mining of mineral resources, especially in the construction and maintenance of municipal pipe networks, it is often necessary to excavate and support small-diameter shafts, which are characterized by small excavation diameters and uncertain depths, which may withstand leakage or g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 王复明潘艳辉赵鹏
Owner SAFEKEY ENG TECHZHENGZHOU
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