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
CN105672327BActive Publication Date: 2017-10-17SAFEKEY ENG TECHZHENGZHOU
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SAFEKEY ENG TECHZHENGZHOU
Publication Date
2017-10-17

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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.
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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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