PATENT CLAIM ANALYSIS

Application Number: 15869545
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-03
Patent Classification: ["405", "150200"]

Abstract:
A method for deformation control of large-span tunnel in chlorite schist stratum. The method divides the large deformation of large-span tunnel in chlorite schist stratum into five deformation grades according to the surrounding rock conditions of the tunnel. In response to each deformation grade, the deformation control of large-span tunnel is determined so as to ensure the safety and stability of the tunnel support structure and to avoid the clearance intrusion caused by tunnel deformation.

Claim (Index 7):
The method for deformation control of large-span tunnel in chlorite schist stratum according to  claim 4 , wherein controlling the serious large-deformation of the large-span tunnel comprises:\n constructing advance support by using double-row advance grouting pipe; setting reserved deformation to be 50-90 cm; excavating the tunnel using a method of three steps with reserving core soil, wherein the distance from the bottom of the tunnel invert to the top surface of invert backfill is 3-4 m; constructing primary support, wherein double-layer primary supports are carried out in turn for the arch and side wall of the tunnel, wherein the reserved deformation for the first-layer primary support is 50-90 cm, and the second-layer primary support is carried out when the reserved deformation has a remaining of 25-45 cm; and single-layer primary support is applied to the tunnel invert; and each layer of primary support uses HK200b-type steel frame with an interval of 60-70 cm and shotcrete with a thickness of 26-30 cm, and each layer of steel frame is installed with a double-layer steel mesh; and the arch foot and the wall foot of the upper, middle and lower steps of the first-layer steel frame are set with small-diameter double-row feet-lock pipes with a diameter \u226450 mm; and a large-diameter feet-lock pipe with a diameter \u226589 mm is installed for every two steel frames of the second layer at the arch foot and the wall foot of the middle and lower steps; and the installation angle of the feet-lock pipe is 20\u00b0-50\u00b0; when the second-layer primary support is finished, the grouting pipe is used to carry out radial grouting reinforcement to the surrounding rock; and constructing secondary lining using reinforced concrete with a thickness of 70-90 cm at the arch and the side wall, and reinforced concrete with a thickness of 70-100 cm in the tunnel invert.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 86.0
- Lexical Diversity: 1.75556
- Patent Class: 405.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15767157', '15748127', '14397547', '12337113', '14395511']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7360435335236832
- 35 USC 102 Novelty (BERT): 0.5042601077020632
- Combined Prediction Score: 0.7128651909415213
- Mean Citation Score: 203.523044
- Max Citation Score: 251.45667000000003
- Similarity Product: 192.31123153230072

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test