| 1. | Drainage usually has to be undertaken as a first operation .
第一步通常采取排水措施。 |
| 2. | The artificial improvement of drainage could soon lead to a marked loss in nutrients .
采用人工排水措施可以迅速导致养分含量显著降低。 |
| 3. | Guide to trench excavations shoring support and drainage measures
有关壕坑挖掘工程的支撑设备及排水措施指引 |
| 4. | First scheme is cantilever anti - slide pile with drain system ; the other scheme is pre - stress anchor rope anti - slide pile with drain system
方案一为采用悬臂抗滑桩加排水措施；方案二采用抗滑锚桩加排水措施。 |
| 5. | The article introduces the waterproofing and drainage measures and materials for the dam , the foundation of the permanent lock and some buildings of the three gorges project
介绍了三峡工程中大坝、永久船闸基础及一些建筑物的防排水措施和所用材料。 |
| 6. | 4 . according as geologic examination , and feasibility and science and economy of scheme , this dissertation offers two schemes to resistance slide
4 .依据地勘资料，并结合方案的可行性、科学性、经济性等，本文提出了大河坝滑坡治理方案主要采取抗滑桩加排水措施。 |
| 7. | At last , based on the feedback analysis of the data of site investigation , the suggestions about whether to supply drainage measures in the catchment of high - ductility soil area are provided
最后根据现场观测资料进行了反馈分析，对在高塑性土区下游侧是否有必要增加补充排水措施提出了论证意见。 |
| 8. | ( 2 ) when tunnel water is blocked up fully behind the lining , water pressure on the lining will reach maximum at last so long as surrounding rock near the lining is infiltrative no mattter how much the permeability coefficient of surrounding rock is
( 2 )隧道采用完全不排水措施时，只要衬砌附近的围岩渗水，衬砌背后与含水围岩有水力联系，不论渗透系数多大，衬砌背后最终水压会达到静水压，计算时水压不宜折减。 |
| 9. | In addition , this paper carry out successfully the support design practice in the preceding excavation of 4km long exploratory tunnel . according to the thesis research results , the following conclusion can be drawn . if the grouting rock can possess sound anti - seepage capability and the liner structure can hold higher hydraulic permeability relatively , and if the adjoining rock can be made as primary load - bearing structure by construction measure , the stability of country rock and the safety of liner structure will be guaranteed
计算结果表明，如果能使锦屏工程引水隧洞灌浆圈围岩具有较好的防渗性能，将高外水压力控制在灌浆圈以外，再配合透水性相对较好的支护结构以及排水措施，使灌浆圈围岩成为主要承载结构，并使衬砌结构和灌浆圈共同承载，是可以保证围岩的稳定和支护结构安全的。 |
