Leading deep hole pre-splitting roof gob-side entry retaining method

Leading deep hole pre-splitting roof gob-side entry retaining method

The invention relates to the field of underground mining of coal mines and particularly relates to a leading deep hole pre-splitting roof gob-side entry retaining method. The method disclosed by the invention comprises the following steps: drilling on an upper roof along a roof pre-splitting line in...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHEN JIANPENG, SONG ZHIRONG, JIAO NING, CHEN HAILIANG, LI MIHE, LI ZHUHE
Format: Patent
Sprache:chi ; eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
MINING OR QUARRYING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator CHEN JIANPENG
SONG ZHIRONG
JIAO NING
CHEN HAILIANG
LI MIHE
LI ZHUHE
description The invention relates to the field of underground mining of coal mines and particularly relates to a leading deep hole pre-splitting roof gob-side entry retaining method. The method disclosed by the invention comprises the following steps: drilling on an upper roof along a roof pre-splitting line in a roadway in front of a coal face, filling shaped charge at the upper part of the drill hole in a certain range, not filling the charge at the lower part of the drill hole in a certain range, tamping with stemming, detonating before a leading pressure of the face, blasting and pre-splitting rock stratum at a charged part at the upper part of the drill hole, wherein the lower rock stratum is kept complete, and construction space safety is ensured. Quick-hardening and high-strength concrete roadway supporting walls are built after face pushing by adopting a technology for filling pump concrete in a mold bag, non-split lower roadway roof is cut off by the roadway supporting walls under the action of a roof pressure,
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CN108457653A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CN108457653A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CN108457653A3</originalsourceid><addsrcrecordid>eNrjZHDxSU1MycxLV0hJTS1QyMjPSVUoKErVLS7IySwpAYkX5eenKaTnJ-kWZ6akKqTmlRRVKhSlliRm5oFkc1NLMvJTeBhY0xJzilN5oTQ3g6Kba4izh25qQX58anFBYnJqXmpJvLOfoYGFiam5mamxozExagCczDK5</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Leading deep hole pre-splitting roof gob-side entry retaining method</title><source>esp@cenet</source><creator>CHEN JIANPENG ; SONG ZHIRONG ; JIAO NING ; CHEN HAILIANG ; LI MIHE ; LI ZHUHE</creator><creatorcontrib>CHEN JIANPENG ; SONG ZHIRONG ; JIAO NING ; CHEN HAILIANG ; LI MIHE ; LI ZHUHE</creatorcontrib><description>The invention relates to the field of underground mining of coal mines and particularly relates to a leading deep hole pre-splitting roof gob-side entry retaining method. The method disclosed by the invention comprises the following steps: drilling on an upper roof along a roof pre-splitting line in a roadway in front of a coal face, filling shaped charge at the upper part of the drill hole in a certain range, not filling the charge at the lower part of the drill hole in a certain range, tamping with stemming, detonating before a leading pressure of the face, blasting and pre-splitting rock stratum at a charged part at the upper part of the drill hole, wherein the lower rock stratum is kept complete, and construction space safety is ensured. Quick-hardening and high-strength concrete roadway supporting walls are built after face pushing by adopting a technology for filling pump concrete in a mold bag, non-split lower roadway roof is cut off by the roadway supporting walls under the action of a roof pressure,</description><language>chi ; eng</language><subject>EARTH DRILLING ; FIXED CONSTRUCTIONS ; MINING ; MINING OR QUARRYING</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20180828&amp;DB=EPODOC&amp;CC=CN&amp;NR=108457653A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20180828&amp;DB=EPODOC&amp;CC=CN&amp;NR=108457653A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CHEN JIANPENG</creatorcontrib><creatorcontrib>SONG ZHIRONG</creatorcontrib><creatorcontrib>JIAO NING</creatorcontrib><creatorcontrib>CHEN HAILIANG</creatorcontrib><creatorcontrib>LI MIHE</creatorcontrib><creatorcontrib>LI ZHUHE</creatorcontrib><title>Leading deep hole pre-splitting roof gob-side entry retaining method</title><description>The invention relates to the field of underground mining of coal mines and particularly relates to a leading deep hole pre-splitting roof gob-side entry retaining method. The method disclosed by the invention comprises the following steps: drilling on an upper roof along a roof pre-splitting line in a roadway in front of a coal face, filling shaped charge at the upper part of the drill hole in a certain range, not filling the charge at the lower part of the drill hole in a certain range, tamping with stemming, detonating before a leading pressure of the face, blasting and pre-splitting rock stratum at a charged part at the upper part of the drill hole, wherein the lower rock stratum is kept complete, and construction space safety is ensured. Quick-hardening and high-strength concrete roadway supporting walls are built after face pushing by adopting a technology for filling pump concrete in a mold bag, non-split lower roadway roof is cut off by the roadway supporting walls under the action of a roof pressure,</description><subject>EARTH DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>MINING</subject><subject>MINING OR QUARRYING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDxSU1MycxLV0hJTS1QyMjPSVUoKErVLS7IySwpAYkX5eenKaTnJ-kWZ6akKqTmlRRVKhSlliRm5oFkc1NLMvJTeBhY0xJzilN5oTQ3g6Kba4izh25qQX58anFBYnJqXmpJvLOfoYGFiam5mamxozExagCczDK5</recordid><startdate>20180828</startdate><enddate>20180828</enddate><creator>CHEN JIANPENG</creator><creator>SONG ZHIRONG</creator><creator>JIAO NING</creator><creator>CHEN HAILIANG</creator><creator>LI MIHE</creator><creator>LI ZHUHE</creator><scope>EVB</scope></search><sort><creationdate>20180828</creationdate><title>Leading deep hole pre-splitting roof gob-side entry retaining method</title><author>CHEN JIANPENG ; SONG ZHIRONG ; JIAO NING ; CHEN HAILIANG ; LI MIHE ; LI ZHUHE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN108457653A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2018</creationdate><topic>EARTH DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>MINING</topic><topic>MINING OR QUARRYING</topic><toplevel>online_resources</toplevel><creatorcontrib>CHEN JIANPENG</creatorcontrib><creatorcontrib>SONG ZHIRONG</creatorcontrib><creatorcontrib>JIAO NING</creatorcontrib><creatorcontrib>CHEN HAILIANG</creatorcontrib><creatorcontrib>LI MIHE</creatorcontrib><creatorcontrib>LI ZHUHE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CHEN JIANPENG</au><au>SONG ZHIRONG</au><au>JIAO NING</au><au>CHEN HAILIANG</au><au>LI MIHE</au><au>LI ZHUHE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Leading deep hole pre-splitting roof gob-side entry retaining method</title><date>2018-08-28</date><risdate>2018</risdate><abstract>The invention relates to the field of underground mining of coal mines and particularly relates to a leading deep hole pre-splitting roof gob-side entry retaining method. The method disclosed by the invention comprises the following steps: drilling on an upper roof along a roof pre-splitting line in a roadway in front of a coal face, filling shaped charge at the upper part of the drill hole in a certain range, not filling the charge at the lower part of the drill hole in a certain range, tamping with stemming, detonating before a leading pressure of the face, blasting and pre-splitting rock stratum at a charged part at the upper part of the drill hole, wherein the lower rock stratum is kept complete, and construction space safety is ensured. Quick-hardening and high-strength concrete roadway supporting walls are built after face pushing by adopting a technology for filling pump concrete in a mold bag, non-split lower roadway roof is cut off by the roadway supporting walls under the action of a roof pressure,</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language chi ; eng
recordid cdi_epo_espacenet_CN108457653A
source esp@cenet
subjects EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
MINING OR QUARRYING
title Leading deep hole pre-splitting roof gob-side entry retaining method
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-06T09%3A05%3A33IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=CHEN%20JIANPENG&rft.date=2018-08-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ECN108457653A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true