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1)  sand-pebble layer
卵石地层
1.
The application of pipe-jacking in sand-pebble layer of Chengdu Leshan sewage control engineering is introduced,including equipment selections and construction techniques,and the reason of pipe-jacking with upward-deflection is analyzed.
介绍顶管在成都乐山污水治理工程砂卵石地层中施工的设备选型、施工工艺等技术,并对顶进上偏产生的原因进行系统的分析,采取在机头上加铁轨帽沿、纠偏千斤顶安装分油阀等纠偏措施,获得成功。
2)  gravel strata
卵砾石地层
1.
By the analysis of present drilling ways,and according to the characteristics of gravel strata,application feasibility is put forward for DTH hammer concentric simultaneous casing drilling tool in gravel strata,and analysis are made on the structure principle and characteristic of drilling tool.
卵砾石地层是钻探工程中常见的一种典型的不稳定地层。
2.
Through applying downhole hammer concentric simultaneous casing drilling method,the difficulties that drill in gravel strata are solved out fundamentally,the authors consider downhole hammer concentric simultaneous casing drilling is an effective way for gravel beds in combination with a case of rock-soil engineering survey in Duyun Cit
卵砾石地层是钻探工程中常见的一种典型的难钻进不稳定地层。
3)  gravel stratum
卵砾石地层
1.
Abatract The paper firstly introduces the designing principle of a new-type alloy-diamond bit for the gravel stratum, secondlyexplains briefly the mechanism of matrix composition for the new-type bit.
本文首先介绍一种用于卵砾石地层钻进的新型针状硬质合金钻头的设计原理,而后简要说明其胎体配方组成机理。
2.
Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed,short service life of bit and high drilling cost.
卵砾石地层钻进是钻探的难题之一,不仅钻进速度低,钻头的使用寿命短,而且钻探成本高。
4)  sandy cobble ground
砂卵石地层
1.
For the construction of the running tunnels of Chengdu Metro in sandy cobble ground,the shield machine is required to have the capability of performing long-distance boring in sandy cobble ground,crushing the large boulders and cobbles and prevention and control of mud bursting.
在成都砂卵石地层中建设地铁,要求盾构设备能够实现砂卵石地层的长距离掘进、大漂石和卵石的破碎以及防止喷涌的发生。
2.
The first stage project of line 1 of Chengdu Metro mostly passes through water-rich sandy cobble ground,which contains a small amount of large boulders.
成都地铁一号线一期工程区间隧道大多通过富水砂卵石地层,且含有少量大粒径漂石。
5)  cobble stratum
砂卵石地层
1.
1 line of Chengdu Metro as an example,the authors introduce the methods and measures of hyperbaric operation in water bearing cobble stratum.
以成都地铁1号线盾构4标段(省体育馆—火车南站)工程为依托,介绍了针对成都地铁含水砂卵石地层这种特殊地质所采取的带压进舱作业的相关施工方案和施工措施,提出了确保砂卵石地层自稳性和提高砂卵石地层气密性的带压进舱作业的技术要点和作业方法。
6)  cobble and boulder strata
卵漂石地层
1.
When large dismeter water well is constructed in cobble and boulder strata drilling by percussion machine is not proper to be used as limited by condition.
本文介绍在卵漂石地层中施工大口径水井时,由于条件所限,在不适宜使用冲击钻机施工的情况下,采用反循环钻进与冲抓钻进相结合的方法,施工大口径水井是可行的。
补充资料:鹅卵石
卵石的一种,直径40-150毫米左右,是一种天然的建筑材料。参看〖卵石〗。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条