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): 645-649. [22] WU Faquan, LIU Jianyou, LIU Tong, et al. A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case[J]. Engineering Geology, 2009.... Engineering Research Center of Rock & Soil Drilling & Excavation and Protection of Ministry of Education, China University of Geosciences, Wuhan 430074, China; 2. Power China Chengdu......
with the increase of excavation depth. The further excavation is reliable for the involved case with respect of the deformation control. Key words: soft soil; excavation; existing building; pile settlement...; 文献标志码:A 文章编号:1672-7207(2016)06-1995-06 Settlement analysis of building piles associated with excavation beneath existing basement......
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)05-1722-08 Displacement-based back analysis method using extend Kalman filter considering excavation damaged zone XU Guowen1, HE Chuan1, WANG Junyong1, WANG Shimin1, TANG Rui2 (1. Key Laboratory... and Research Institute, Chengdu 610031, China) Abstract: Based on the field-measured result of the excavation damaged zone (EDZ), the extended Kalman filtering & DEM coupling back analysis method......
号: 1672-7207(2005)02-0277-05 Hierarchical Use Case Model Based on Reuse and Applications REN Sheng-bing,CHEN Song-qiao,YU Shou-yi (School of Information Science and Engineering, Central South University, Changsha 410083, China) Abstract: Extending Regnell′s research on hierarchical use case model, a hierarchical use case model based on reuse is proposed. The hierarchical model divides use......
, the theory of gas-solid two-phase flow and combined ventilation systems in excavation roadway were used, and the three-dimensional numerical model of hybrid ventilation was established. Taking Woxi pithead... exhaust is the most ideal. Key words: mine ventilation; excavation roadway; numerical simulation; dust 随着矿山地下开采深度的下延以及采掘机械化的普遍应用,井下生产面临的粉尘污染问题也越来越严峻[1].对此,许多矿山采取了多种方法和手段来降低掘进巷道内爆破开凿产生的粉尘,主要包括采用混合式局部通风,加大掘进......
, Southwest Jiaotong University, Chengdu 610031, China; 2. Guangzhou Metro Corporation, Guangzhou 510030, China) Abstract: By numerical simulation and on-site monitoring, the failure mode, excavation schemes, excavation parameters and mechanical characteristics of supporting system of shallow large-section tunnel for the subway transition section were studied. The result shows that fracture plane arises......
in powder pack for a duration of 6 h (carburizing)and for 4 h in the case of nitrocarburizing. Factors investigated were: morphology, depth and microhardness of the cases obtained, their microstructure... at the rate of 30 drops per minute. 关键词:Nitrocarburizing; carburizing; tool steels; process kinetics; case depth; microhardness; friction wear; [全文内容正在添加中] ......
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A successful case of hydrocarbon dew point analysis during mixing of natural gases in transmission pipelineWANG Wei(王玮)1, DUAN Ji-miao(段纪淼)1, LI Ming(李明)1, XIN Peng(信鹏)2, SHI Bo-hui(史博会)1, ZHANG Wen... transmission networks, where condensation would lead to higher pressure drops, lower line capacity and may cause safety problem. A successful case of hydrocarbon dew point (HCDP) analysis is demonstrated......