文章摘要信息 关键词 ： 地面钻井；套管；耦合变形；拉剪应力；安全系数 [gap=678]Keywords : surface borehole;casing;coupling deformation;shear and tension stress;safety factor
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Surface borehole well is a simply and high performance method to drawing coal bed and goaf gas which controlling and making good use of the coal mine gas.
地面钻井抽采采动影响煤层及采空区瓦斯是进行煤矿瓦斯治理和抽采利用的有效方法。
According to sampling analysis the surface river water and ground water in borehole have micro-corrosion on concrete structure rebar in reinforced concrete and steel structure.
根据取样分析地表河水、钻孔内地下水对混凝土结构、对钢筋混凝土中钢筋、对钢结构均具微腐蚀性。
The specific surface area is closely related to shale waterize property, property of mechanics and weeping property. It is a key factor for evaluating borehole stability of mud shale.
泥页岩比表面积与泥页岩水化特性、力学性质以及渗水性密切相关，是评价泥页岩井壁稳定性的关键参数。
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