浅水湖泊水上煤田钻探施工关键技术  

Key Technology of Coal Field Drilling above Water in Shallow Lake

作　　者：赵俊峰[1] 刘满才[1] 程志忠[1] 谢焰[2] 

机构地区：[1]淮南矿业(集团)有限责任公司地质勘探工程处,安徽淮南232052 [2]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2014年第2期55-59,共5页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：为了进行浅水湖泊水上煤田地质勘探,研究了相应的水上钻探技术。进行了泥浆污染性试验,测试了泥浆污染指标。施工中采用了封闭的泥浆循环系统,避免了泥浆对湖水的污染;基于勘探区新生界厚度大、地质构造复杂且湖区水位变化大的特点,采用新地层全程下放套管的方案,以保证井下采煤安全;通过探测湖水水位和湖底工程地质条件,进行船舶设计和航道设计,并选择合理的航道疏浚措施;针对因受交通条件限制、工作船不能运抵勘探区的问题,进行现场造船;从沉塔承载力及抗倾覆稳定性二个方面进行水上钻井平台设计。采用以上技术在淮南港河勘探区顺利完成了12个钻孔的施工,工期提前10个月。In order to explore coal field in shallow lake , the drilling technology above water was developed .The test of drilling mud contaminating to water was made .Based on the result of the test , drilling mud was kept tight-ly sealed to avoid lake water being polluted by mud .Considering the exploration area with thick new formation , complicated structure and sharp levels varying , the casing was set through the whole new formation .Ships, wa-terways and its dredging measures were designed according the surveying results of the lake levels and engineer -ing geological conditions .Ships were produced at the spot to solve the problem that the ships can not be transpor -ted there from the shipyard because of the restrictions on the traffic conditions .Drilling platforms above water were designed according to the sinking tower capability and anti -overturning check .Having adopted these tech-niques , 12 boreholes were completed at Ganghe Lake in Huainan , duration advanced 10 months .

关 键 词：浅水湖泊 煤田钻探 泥浆污染 平台设计 

分 类 号：U45[建筑科学—桥梁与隧道工程]