Collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting
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United States of America Patent
Stats
-
Dec 5, 2023
Grant Date -
Oct 26, 2023
app pub date -
Mar 3, 2023
filing date -
Apr 22, 2022
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting provided by the disclosure includes the following steps: step 1, driving into a coal seam to release pressure; step 2, low roof pre-splitting during driving process; step 3, supporting of roadway surrounding rock and support reinforcement; step 4, floor destressing of the roadway; step 5, high roof pre-splitting before mining; step 6, destressing and supporting of the advanced roadway surrounding rock during the mining process of the working face. The collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting, and to carry out local pressure relief, roof pre-splitting and reinforcement support construction in the whole cycle of the coal working face in a progressive manner, so as to achieve the prevention and control of rock burst in the working face.
First Claim
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Family
International Classification(s)
- 2023 Application Filing Year
- E21D Class
- 62 Applications Filed
- 29 Patents Issued To-Date
- 46.78 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- E21D Class
- 89.58 % this patent is cited more than
- 2 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jun 5, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 5, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 5, 2035 |
