煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
1期
77-79,30
,共4页
近距离多煤层%采空区积水%防隔水煤岩柱
近距離多煤層%採空區積水%防隔水煤巖柱
근거리다매층%채공구적수%방격수매암주
close multi-coalseam%watered gob%coal and rock waterproof pillar
防隔水煤岩柱的合理留设是采空区积水下安全开采的关键。新强煤矿属于近距离煤层群开采，随着开采深度加大，浅部采区开采形成的采空区积水已成为深部延伸开采的主要威胁水体。通过对矿井实际开采情况研究分析，在对具有连通关系的浅部采区进行封闭隔离，隔断其与其他未开采的采区的水力联系的基础上，对上覆煤层和侧方同煤层采空区积水区合理留设防隔水煤岩柱，确定其深部不同煤层的开采上限，实现了近距离多煤层采空区积水下的安全开采。
防隔水煤巖柱的閤理留設是採空區積水下安全開採的關鍵。新彊煤礦屬于近距離煤層群開採，隨著開採深度加大，淺部採區開採形成的採空區積水已成為深部延伸開採的主要威脅水體。通過對礦井實際開採情況研究分析，在對具有連通關繫的淺部採區進行封閉隔離，隔斷其與其他未開採的採區的水力聯繫的基礎上，對上覆煤層和側方同煤層採空區積水區閤理留設防隔水煤巖柱，確定其深部不同煤層的開採上限，實現瞭近距離多煤層採空區積水下的安全開採。
방격수매암주적합리류설시채공구적수하안전개채적관건。신강매광속우근거리매층군개채，수착개채심도가대，천부채구개채형성적채공구적수이성위심부연신개채적주요위협수체。통과대광정실제개채정황연구분석，재대구유련통관계적천부채구진행봉폐격리，격단기여기타미개채적채구적수력련계적기출상，대상복매층화측방동매층채공구적수구합리류설방격수매암주，학정기심부불동매층적개채상한，실현료근거리다매층채공구적수하적안전개채。
Rational coal and rock waterproof pillar design is the key to safely mining coal under watered gob .Close multi-coalseams were mined in Xinqiang Colliery.With mining depth increasing , watered gob formed in shallow mining has been main dangerous source for deep mining.By researching actual mining , shallow mining area with connection relationship was closed and isolated , rational water-proof coal and rock pillar was designed and mining upper limits of different coal -seams were obtained , which realized safe mining under watered gob.
