A brief introduction is given to the treatment of the zeya dam foundation, principles of seepage control and design of the concrete face rockfill dam of the zeya reservoir. as for the excavation of the sand - gravel zones, except the toe slab and its 1 / 9 bottom width down stream, the alluvial layers are excavated to the micro - weathered rocks, while the other sections remain unexcavated. regarding to the treatment of the fracture zones, concrete filling is used for the toe slabs and semi - permeable materials are used for other section. according to the construction characteristics, a filter is placed in the down stream embankment foot. to improve the integrity of the dam foundation and anti - seepage capability consolidation grouting and curtain grouting are adopted. as a result safety, economic benefit, convenience in construction and good performace are achieved
簡要論述澤雅水庫面板堆
石壩壩
基處理和防滲的原則及設計要點.趾板
基礎和堆
石體各區砂礫
石基礎開挖,除趾板與其下游1 / 9底寬范圍以及壩腳挖除沖積層至弱風化(局部微風化)
基巖外,其餘部分均予以保留.斷層破碎帶處理,趾板部位採用混凝土塞,其它部位採用半透水料置換,並根據本工程特點在下游壩腳加設了反濾層.為提高壩
基的整體性和防滲性能,對趾板進行了固結和帷幕灌漿.達到了安全、經濟、便於施工的目的,運行情況良好,可為面板堆
石壩的設計和研究提供參考與借鑒
According to many engineering blasting cases, in - depth analysis of underwater blasting mechanics, and discussion about the advantages of touch - ground charging for underwater rubble - mound foundation explosive compaction, it is proved that touch - ground charging method for explosive compaction results in good effect and is characterized by simple and feasible operation, and low cost, and thus well accepted by clients and construction units
摘要通過大量的工程爆破實例,深入的水下爆炸機理分析以及觸地布藥方式在水下拋
石基床爆炸密實優越性的討論,充分表明採用觸地布藥方式實施爆炸密實的效果良好,操作簡單可行,節約工程成本,並得到了業主、施工單位的肯定和好評。
We must take account of crack resistance when doing mixture design. after systematic and scientific determination and analysis of temperature contraction property, aridity contraction property and strength index, the thesis have chosen the best grade limits in which crack resistance and compressive strength are high. this conclusion is based upon standard ? grade limits of cement stabilizing crushed stones subbase
本課題在對水泥穩定類材料溫縮、干縮性能以及強度和模量等指標的測試分析前提下,以規范原有的水泥穩定碎
石基層級配范圍為
基礎,選擇出抗裂性和抗壓強度兩項指標俱佳的級配范圍。
Analysis and control of compaction by blasting to construct deep water rubble - mound foundation
深水拋
石基床爆夯施工影響分析及其控制
Gunagzhou panyu rongxiang faucet co., ltd. was opened in 1998, the new factory locates in shiji town panyu district guangzhou city, the area is 1, 5000 square meters. it has more than 800 staff and 18 professional workshops now. they are founding workshop, forging workshop, punching workshop, cnc workshop, claming workshop, soldering workshop, polishing workshop, assembling workshop, mould workshop, polishing workshop, electroplated workshop, test workshop etc. we have the ability to work in pineline from casting, forging machining step to polishing and plating step
廣州市番禺榮祥水暖器材有限公司創建於一九九八年,廠區位於廣州市番禺區
石基鎮,佔地15000平方米,主要以生產陶瓷閥芯和水暖器材配件為主,現有員工八百多名,擁有鑄造車間(分為引鑄和砂鑄) 、鍛壓車間、沖壓車間、數控車間、鉗工車間、焊接車間、拋光車間、彎管車間、模具車間、新產品試制車間、電鍍車間、試驗車間、檢測車間、裝配車間等十八個專業車間,具備了從鑄造、鍛沖壓、機加工到外表層拋光電鍍一條龍的生產能力。
Construction quality of stabilized macadam - cement in nandeng expressway
水泥穩定碎
石基層施工中離析問題原因及防治
By a great number of tests indoors, the theoretic analysis of microstructure and fracture mechanics, tests on the test - road, after the analysis of road - related performances of cement - bound crushed stones base and the study for improvement, the conclusion is put forward, that applying the cement fa - bound crushed stones base can obviously minish the maximal stress of asphalt pavement, lighten and stay cracks in the asphalt pavement effectively and economically so as to improve long - term performances of the structure of pavement
通過大量室內試驗、微觀結構和斷裂力學理論分析,鋪築試驗路段現場檢測,分析水泥穩定級配碎
石基層的路用結構性能,並研究其路用性能的改善措施,得出水泥粉煤灰穩定級配碎
石基層可明顯減小瀝青面層的最大應力,經濟有效的減輕和延緩瀝青路面開裂,改善路面結構長期使用性能。
Redissolution of native gold from the mazhala gold - antimony deposit in southern xizang
錫礦山銻礦床中方解
石基本特徵及與礦化的關系
In order to improve the pavement performance of lime - fly ash stabilized aggregates and make coarse aggregates form skeleton, the paper confirm the rate of voids of the mixed aggregates by the method of vibrating test
為了改善二灰碎
石基層的路用性能,使粗集料( 31 . 5mm 4 . 75mm )能夠形成骨架結構,本課題通過振實試驗方法研究了不同粒徑粗集料混合后的空隙率。
Study of metakaolinite - based geopolymeric cement
偏高嶺石基土聚水泥的研究