PATENT CLAIM ANALYSIS

Application Number: 16097828
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["299", "012000"]

Abstract:
A method for stepwise construction of a preferential gas migration pathway at a stope in a coal seam. First, a gas migration pathway is preliminarily formed at a stope depending on a mining effect of mining in a first mined seam. construction and stabilization method of gob-side entry retaining in deep strata, and a method of manual-guided pre-fracturing boreholes are then used to perform active construction respectively in external space and the outside of coal-rock mass to form preferential gas migration pathways. Eventually, under the effect of mining-induced stress, a system of preferential gas migration pathways connected to each other at the stope is further formed.

Claim (Index 6):
The method for stepwise construction of a preferential gas migration pathway at a stope in a coal seam according to  claim 1 , wherein the manual-guided pre-fracturing boreholes are constructed by forming the manual-guided fractures inside the hard roof in advance by means of an artificial pre-fracturing technique comprising blasting or hydrofracturing.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 97.0
- Lexical Diversity: 1.83871
- Patent Class: 299.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16098131', '15310394', '14397506', '15038511', '13446952']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.662422246653804
- 35 USC 102 Novelty (BERT): 0.5842393513494838
- Combined Prediction Score: 0.6546039571233719
- Mean Citation Score: 308.08949
- Max Citation Score: 529.1046
- Similarity Product: 412.0716509919405

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