PATENT CLAIM ANALYSIS

Application Number: 16300957
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-05
Patent Classification: ["405", "036000"]

Abstract:
A self-starting negative pressure drainage system for draining groundwater in a slope, includes: a declined borehole, a pipe boot, a permeable pipe and a drain pipe; wherein the declined borehole is divided into a permeable drilling section and a sealed grouting drilling section; wherein the permeable drilling section is on a lower portion of the declined borehole, and the sealed grouting drilling section is on an upper portion of the declined borehole; a water stop ring made of water-expanding rubber is provided between the permeable drilling section and the sealed grouting drilling section; the permeable drilling section comprises the permeable pipe; a top of the permeable pipe contacts the water-expanding rubber; a cavity is formed in the permeable pipe, groundwater is capable of penetrating into the cavity via the permeable pipe; an inlet of the drain pipe passes through the water stop ring made of water-expanding rubber and is inserted into the permeable pipe; a gap between the drain pipe and the drilling wall of the sealed grouting drilling section is filled with the cement mortar. The infiltration of groundwater causes the water pressure in the permeable drilling section to rise, forcing the groundwater from the borehole to naturally flow out of the orifice. After the drainage process is started, siphon acts cause a negative pressure zone formed in the permeable drilling section to force the groundwater in the slope flows quickly to the borehole. The invention is capable of realizing the real-time continuous drainage in the deep portion of the slope, which solves the drainage treatment problem of the large landslide, and ensures a low engineering cost of maintaining the stability of the slope.

Claim (Index 3):
The self-starting negative pressure drainage system for draining groundwater in the slope, as recited in  claim 1 , wherein the permeable pipe adopts outer woven filter cloth and perforated corrugated pipes made of HDPE as an inner support; the pipe boot adopts an HDPE pipe with a sealed bottom and an open top;\n wherein the drain pipe adopts a PA pipe with a diameter at a range of 4-8 mm.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 98.0
- Lexical Diversity: 2.8835
- Patent Class: 405.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16300956', '15307006', '12706087', '13784342', '10287017']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7796517807656234
- 35 USC 102 Novelty (BERT): 0.5456883964736283
- Combined Prediction Score: 0.7562554423364238
- Mean Citation Score: 258.75102400000003
- Max Citation Score: 401.6914
- Similarity Product: 321.06281987590785

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

Dataset: test