http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106677781-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21C41-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21C41-18 |
| filingDate | 2017-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106677781-B |
| titleOfInvention | A kind of ultra-thin coal seam drilling release anti-reflection method |
| abstract | The invention discloses a kind of ultra-thin coal seam drilling release anti-reflection methods, comprising the following steps: layer position and the thickness for determining very thin protective layer drilling determine the drillings parameters such as drilling width, interval coal pillar width and interim wide coal column spacing.It is stayed according to drilling width interval and sets interval coal column, until reaching adjacent interim wide coal column spacing L, then stayed and set interim wide coal column, then proceed to drilling, until reaching next adjacent interim wide coal column spacing L.It turns back the interim wide coal column for staying before drilling back production goaf and setting, is destroyed after interim width pillar extraction, upper layer rock stratum sedimentation, pressure discharges.So circulation, drilling working face is constantly pushed ahead, until entire working face mining finishes.Working face arrangement of the present invention is simple, equipment is few, is easy to implement automation；It avoids close distance protected seam or closes on the generation of Gas Outburst or water inrush accident under the specific conditions such as artesian water protective layer；The safety of work is ensured. |
| priorityDate | 2017-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.