Abstract

Disclosed are an imprinting material (1), and a roughening construction method for a new and old concrete joint surface. The imprinting material (1) comprises a bottom plate (11) and a plurality of bulges (12) fixed on the bottom plate (11), and the bulges (12) are used for forming an uneven concrete surface. Before initial setting of concrete, the imprinting material (1) is laid on the surface of the concrete; then the bulges (12) on the imprinting material (1) are pressed into the concrete surface; and after the strength of the concrete reaches 2.5-5 MPa, the imprinting material (1) is removed. The imprinting material (1) enables a new and old concrete joint surface to be successfully embedded and fixed, a roughening process is easy to control, and same has a high applicability.

IPC Classes  ?

• E01C 19/43 - Machines or arrangements for roughening or patterning freshly-laid paving courses, e.g. indenting rollers

Abstract

A grouting pipe and a method of reinforcing a tunnel (5) by surface grouting. The grouting pipe comprises a first sleeve valve pipe (1), a second sleeve valve pipe (2) and a third sleeve valve pipe (4). The sleeve valve pipes are connected in a sleeved manner and perform grouting by means of grout holes (3) on the sleeve valve pipes. The method comprises steps: 1. sampling and testing soil in a tunnel (5) and determining soil parameters; 2. performing surveying and leveling of a construction site; 3. drilling and preparing an outer cover material (7); and 4. performing grouting section by section by means of the grout holes. The method performs surface grouting to reinforce the tunnel (5) by means of a surface-constructed grouting pipe and is applicable to extremely deep tunnels (5) as well as tunnels (5) of normal depth, and is also applicable to various geological structures.

IPC Classes  ?

• E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries

Abstract

A method for construction of a shaft lining. A hanging scaffold-formwork device (3), a lifting device (1) and a suspension and anchoring device (2) are used to perform the following steps of the method for construction of a shaft lining: laying, tying, lifting, suspending and anchoring, formwork erection, material feeding and formwork filling, formwork removal, and separation. The method for construction of a shaft lining enables construction of a shaft lining to be completed easily, quickly and safely, thereby reducing the required time, amount of labor and materials, while improving work efficiency, and accelerating construction.

IPC Classes  ?

• E21D 5/04 - Lining shaftsLinings therefor with brick, concrete, stone, or similar building materials
• E21D 5/12 - Accessories for making shaft linings, e.g. suspended cradles, shutterings

Abstract

A method for excavating a tunnel shaft (1), by drilling a number of holes I (2) with smaller diameters, it is possible to predict groundwater and bad geology etc. in advance, which is convenient for confirming the degree of coincidence of the geological survey data, so as to provide guidance for subsequent construction and reduce construction risks and difficulties, at the same time, the excavation from top to bottom does not require the restriction of the formation of a positive hole at the bottom of the shaft (1), it can also be constructed in a non-blasting manner, which has high safety and can loosen the rock and soil in advance, improves the construction efficiency of excavation, and shortens the construction period.

IPC Classes  ?

• E21D 1/03 - Sinking shafts mechanically
• E21D 1/08 - Sinking shafts while moving the lining downwards
• E21B 7/00 - Special methods or apparatus for drilling