摘要
长壁工作面之间都留有一定宽度的安全煤柱,造成煤柱损失;在一定条件下,实行无煤柱开采,具有明显的经济和社会效益。镇城底矿22117与22115工作面原设计以一断层为界,经过掘探,未发现该断层,可采用沿空留巷的方法进行无煤柱开采。本文论述了在煤层具有自燃发火倾向的条件下实施沿空留巷的方法及技术关键。
Between long-wall working face retains safe coal pillar of certain width,causes coal pillar loss.Primary design of 22117,22115 working face in Zhengchengdi coal mine takes a fault as limit,through digging and exploring doesn′t find this fault,carries out mining without coal pillar by adopting the method of gob-side entry retaining.This text expounds the method and technology key of implementing gob-side entry retaining under the condition of having self-ignite trend of coal seam.
出处
《山西焦煤科技》
2008年第3期17-18,36,共3页
Shanxi Coking Coal Science & Technology
关键词
无煤柱开采
沿空留巷
巷道支护
Mining without coal pillar
Gob-side entry retainging
Tunnel support
