E21D9/00 - CPC Classification Index

ClassID:

135968 ⎘

E21D9/00 - CPC Classification

Classification description:

Tunnels; Galleries; Large underground chambers; Linings therefor

Sub-classes:

E21D2009/008 » {Driving transverse tunnels starting from existing tunnels} 0
E21D9/001 » {Improving soil or rock, e.g. by freezing; Injections } 18
E21D9/003 » {Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines} 73
E21D9/005 » {by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit } 18
E21D9/006 » {by making use of blasting methods } 50
E21D9/007 » {Methods or devices for restoring the cross-section of tunnels, e.g. by equalising the floor} 0
E21D9/02 » Driving inclined tunnels or galleries 6
E21D9/04 » Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for 11
E21D9/06 » Making by using a driving shield, {i.e. advanced by pushing means bearing against the already placed lining } 18
E21D9/10 » Making by using boring or cutting machines 24
E21D9/12 » Devices for removing or hauling away excavated material or spoil; Working or loading platforms 23
E21D9/14 » Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings 38

Recent Application in this class:

20250084705

2025-03-13

PRODUCTION WELLBORE DEFLECTOR-LESS MULTILATERAL SYSTEM USING A GUIDANCE SUB

20240110479

2024-04-04

MULTI-FACTOR QUANTITATIVE ANALYSIS METHOD FOR DEFORMATION OF NEIGHBORHOOD TUNNEL

20240003254

2024-01-04

Vertical orthogonal top exhausting air duct structure of deeply-buried subway station and construction method therefor

20200393595

2020-12-17

Three-dimensional ground model generation and automated earthwork target model generation system based on parameter input

20190316454

2019-10-17

Stress-transfer method in tunnel with high ground pressure based on fracturing ring

20180252104

2018-09-06

Tunnel construction method using pre-support and post-support and apparatus suitable for same

20180202291

2018-07-19

Fractured roof 110 mining method entry-side anti-collapsed structure

20160319664

2016-11-03

Procedure for the construction of cross passages in double pipe tunnels

20150125215

2015-05-07

METHOD FOR CONSTRUCTING A TUNNEL COURSE, AND STRUCTURAL ELEMENT FOR USE BY THE METHOD

#10

20130174725

2013-07-11

System for storing potential energy and method for producing such a system

#11

20120200139

2012-08-09

Underground mining

#12

20100266347

2010-10-21

Method of regulating air-foam stabilizer and method of air-foam drilling work

#13

15473248

2018-08-07

Site positioning system for an underground machine