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 6):
The method for deformation control of large-span tunnel in chlorite schist stratum according to  claim 4 , wherein controlling the extremely serious large-deformation of the large-span tunnel comprises:\n constructing advance support using double-row advance grouting pipe; setting reserved deformation to be 90-120 cm; excavating the tunnel using a method of three steps with reserving core soil, wherein, when a tunnel invert is excavated, a distance from the bottom of the tunnel invert to a top surface of invert backfill is 3-4 m, which can improve a stress condition of the tunnel invert and effectively prevent cracking and heave of the tunnel invert; constructing primary support, wherein double-layer primary supports are carried out in turn for the arch, side wall and invert of the tunnel, wherein the reserved deformation for the first-layer primary support is 90-120 cm, and the second-layer primary support is carried out when the reserved deformation has a remaining of 45-60 cm; and each layer of primary support uses HK200b-type steel frame with an interval of 50-60 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 set for each steel frame 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; and constructing secondary lining, wherein the secondary lining uses 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): 0.7359287962627229
- 35 USC 102 Novelty (BERT): 0.5049324327979807
- Combined Prediction Score: 0.7128291599162487
- Mean Citation Score: 203.523044
- Max Citation Score: 251.45667000000003
- Similarity Product: 190.5045347971684

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