Title:
METHOD FOR RETAINING AND PROTECTION OF FOUNDATION EXCAVATIONS UNDER GEOLOGICAL CONDITION OF SOIL LAYER CONTAINING STONES
Document Type and Number:
WIPO Patent Application WO/2022/017541
Kind Code:
A1
Abstract:
A method for retaining and protection of foundation excavations under the geological condition of a soil layer containing stones, the method comprising: S1, conducting geological exploration, and determining the position of stones on an excavating path of a foundation excavation; S2, measuring and positioning the boundary of the foundation excavation; S3, a drilling machine handling the stones along a foundation excavation retaining and protection boundary, wherein after the drilling machine firstly drills a plurality of large holes in a soil layer above the stones, protective tubes are inserted into the plurality of large holes respectively, then the drilling machine passes through the protective tubes to drill small holes in the stones, and next, a hydraulic splitting machine is inserted into the small holes, such that the hydraulic splitting machine is used to split the stones to form splits; and S4, performing surface earthwork excavating, installing steel purlins, and driving steel sheet piles. A retaining and protection structure comprises a plurality of insertion plates and connecting plates, wherein clamping slots corresponding to the insertion plates are provided on two sides of each connecting plate. The present invention is used for solving the problem of it not being possible for existing retaining and protection of foundation excavations under the geological condition of a soil layer containing stones to penetrate stones, and a plurality of working faces can be in operation at the same time, thereby shortening a construction period. Moreover, no pollution is caused to the environment.
Inventors:
ZHANG LI (CN)
PAN ZHONGQI (CN)
YANG LIYING (CN)
ZHOU RONG (CN)
LI XIAOHONG (CN)
HAO XIANGRU (CN)
JIN ZEKANG (CN)
PAN ZHONGQI (CN)
YANG LIYING (CN)
ZHOU RONG (CN)
LI XIAOHONG (CN)
HAO XIANGRU (CN)
JIN ZEKANG (CN)
Application Number:
PCT/CN2021/113859
Publication Date:
January 27, 2022
Filing Date:
August 20, 2021
Export Citation:
Assignee:
CHINA THREE GORGES CORP (CN)
BEIJINGSHI LIANGSHUIHE MAN OFFICE (CN)
BEIJINGSHI LIANGSHUIHE MAN OFFICE (CN)
International Classes:
E02D17/04
Foreign References:
| CN112442991A | 2021-03-05 | |||
| CN101985836A | 2011-03-16 | |||
| CN110424434A | 2019-11-08 | |||
| CN109989405A | 2019-07-09 | |||
| JPH08253930A | 1996-10-01 | |||
| JPH09158197A | 1997-06-17 |
Attorney, Agent or Firm:
YICHANG THREE GORGES PATENT (CN)
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