http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109356607-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21D9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21D9-10 |
| filingDate | 2018-10-30^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109356607-B |
| titleOfInvention | High-water-pressure telescopic type composite drilling and cutting method for soft and hard stratum |
| abstract | The invention belongs to the technical field of underground engineering rock and soil mass drilling and cutting and underground engineering disaster prevention and reduction, and provides a high-water-pressure telescopic type composite drilling and cutting method for soft and hard strata. When drilling and cutting a hard stratum, high-pressure water pressure gathered in a high-pressure water bin is intensively applied to the upper space of the corresponding straight partition plate in the I-shaped pressurizer and is further intensively transmitted to the high-strength spring, and the high-strength spring is further compressed and deformed under the action of the concentrated pressure, so that various drilling and cutting tools at the bottom of the wear-resistant shell are driven to quickly drill and cut the hard stratum, and meanwhile, rock debris in the inverted-cup-shaped mud discharge channel can be discharged out of the pipe at a high speed by utilizing a high-pressure resistant pipe; on the contrary, when the construction is carried out in a soft stratum, the water pressure injected into the high-pressure water sump is reduced, and the water pressure of the high-pressure water sump and the soil pressure of the soft soil stratum are kept at the same level. The device has the characteristics of integration of drilling and cutting, uniform drilling and cutting force, low cost, high hole forming precision and high drilling and cutting speed. |
| priorityDate | 2018-10-30^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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