摘要
巷口井东翼副立井覆盖层(砾石层)厚度达175 m,采用外围降水井法,群孔抽水,形成降落漏斗,将井筒周边地区地下水位降到175 m以下,减小了井筒涌水量,为井筒施工提供了良好的作业条件,顺利完成立井的施工任务。
Auxiliary Shaft of East of Hangkou Colliery is located in red soil gravel seam, which coverage depth is 175cm. Outer precipitation is used to make holes pump water, form landing funnel, which makes groundwater level surrounded pit shaft drop bellow 175cm, reduces its pouring volume and provides better working condition for construction.
出处
《江西煤炭科技》
2009年第1期16-17,24,共3页
Jiangxi Coal Science & Technology
关键词
外围降水法
砾石层
降落漏斗
outer precipitation
auxiliary shaft
red soil gravel seam
landing funnel
