So the author proposed some compliments in circle slices method as follows : first , after definite integral method instead of the present slices method was suggested by chen zuyu , a lot of experts studied at this aspect because this method can get rid of the slicing 本文針對(duì)這兩個(gè)問題作了以下改進(jìn): 1 、在陳祖煜提出用積分的思路代替條分法以后,不斷有人在這方面作研究。本文推導(dǎo)了圓弧滑動(dòng)面的穩(wěn)定系數(shù)的解析公式。
Habitually we practice slope stability analysis and appraise method by the safety coefficient method , which was set up under the basic of slice methods of rigid body equilibrium principle , and achieve the safety coefficient by carrying on the slope stability calculate which can be regard as the slope stability evaluation index 慣用邊坡穩(wěn)定性分析與評(píng)價(jià)方法為安全系數(shù)法,該法以建立在剛體極限平衡原則下的各條分法為基礎(chǔ),通過對(duì)邊坡進(jìn)行穩(wěn)定性計(jì)算求得安全系數(shù),并以此作為邊坡工程穩(wěn)定性的評(píng)價(jià)指標(biāo)。
By thoroughly analyzing the methods on slope stability of high rock - filled embankment , in this paper , a new kind of composite evolutionary algorithm is formed to search the critical slippage surface and also discussed in this paper is a new way to simplify the procedure of general slice method for stability analysis 本文還通過對(duì)目前國內(nèi)外高路堤邊坡穩(wěn)定性分析方法的綜合分析和深入探討,簡化了極限平衡法中的通用條分法的求解過程,并結(jié)合現(xiàn)代優(yōu)化方法,提出一種新型的混合演化算法對(duì)高填石路堤邊坡臨界滑動(dòng)面進(jìn)行搜索。
The slice method program is complied to calculate the safety factor of the slope at difference moments according to water distribution in the slope , and the change regularity of safety factors during the whole period is also obtained . the result revealed that the safety factor of the slope decreases during a long period , and reaches the lowest value at certain moment , then increases gradually 編制了條分法計(jì)算程序,根據(jù)不同時(shí)刻邊坡內(nèi)含水量的分布計(jì)算其安全系數(shù),結(jié)果表明,土坡的安全系數(shù)在整個(gè)過程中的變化規(guī)律為:先減小,達(dá)到最小值后如果未破壞,則安全系數(shù)又會(huì)逐步增大。
For the issue of blind parameter estimation of dsss / bpsk signal damaged by strong additive white gaussian noise ( awgn ) , this dissertation mainly researches on carrier doubler method ( cdm ) , auto - correlation method ( acm ) , delay - and - multiply ( dm ) method and fourth - order cumulant 2 - d slice method 針對(duì)受強(qiáng)高斯噪聲污染的dsss / bpsk信號(hào)對(duì)抗技術(shù)中的盲參數(shù)估計(jì)問題,本文著重研究了平方倍頻法、時(shí)域自相關(guān)法、延遲相乘法三種常規(guī)的單參數(shù)估計(jì)法以及四階累積量2 - d切片多參數(shù)估計(jì)法。
The work of this thesis lays a solid foundation for the integration of cad , capp and rp . the main work may be summ arized as follows : ( 1 ) after discussing all kinds of existing algorithms , this thesis presents a new kind of adaptive slicing algorithm that determines the slicing thickness by comprehensively considering the surface normal and the cross - sectional area . and for the same part , a comparison between the adaptive slicing and the equal - thickness slicing methods is performed 論文所做的主要工作如下: ( 1 )在綜合考慮各種分層算法的基礎(chǔ)上,提出了法線與面積綜合判定法來確定分層厚度的cad模型直接自適應(yīng)分層算法:并針對(duì)同一模型對(duì)自適應(yīng)分層和等厚分層進(jìn)行了比較,結(jié)果發(fā)現(xiàn):自適應(yīng)分層在精度方面雖然與等厚分層基本相當(dāng),但是其層數(shù)可以顯著減少,所以采用自適應(yīng)分層可使成形效率顯著提高。
The field of water distribution is obtained by finite difference method , then it is transformed into weight field and strength field or the field of suction distribution . the safety factor of slope during the infiltration time is calculated by slice method according to the actual weigh field and strength field 在有限差分法求得土坡水分分布的基礎(chǔ)上,提出了用條分法計(jì)算土坡在降雨入滲各個(gè)時(shí)刻安全系數(shù)的思路:把水分分布場轉(zhuǎn)化為邊坡的基質(zhì)吸力分布場(強(qiáng)度場)和重量場,用邊坡的實(shí)際重量場和強(qiáng)度場來進(jìn)行安全系數(shù)的計(jì)算。
Separately select and use the slice method based on rigid body theory of ultimate equilibrium and the ai theory based on neural network to justify loess side slope stability and finite element numerical stimulation based on elastoplastic theory to further research the factors of slope failure and deformation mechanism of landslide 分別采用基于剛體極限平衡理論的條分法和基于神經(jīng)網(wǎng)絡(luò)的人工智能理論判別黃土邊坡穩(wěn)定性;又采用基于彈塑性理論的有限元數(shù)值模擬,進(jìn)一步探討了黃土地區(qū)邊坡失穩(wěn)的影響因素及其滑坡變形機(jī)制。
The main factor and the judgement method of landslide stabilty are analyzed in the paper . the use condition and calculation process of landslide stability theory on circular arc slide plane , single plane slide plane , fold slide plane and bishop slice method are expounded in the paper . the calculation evaluation of landslide stability and the calculation of landslide thrust are also descibed in detail 論文分析了影響滑坡穩(wěn)定的主要因素和滑坡穩(wěn)定性的判斷方法,重點(diǎn)對(duì)圓弧形滑動(dòng)面、單一平面滑動(dòng)面、折線形滑動(dòng)面、 bishop條分法等不同滑坡模式的滑坡穩(wěn)定性理論計(jì)算方法的使用條件和計(jì)算過程作了詳盡的闡述,對(duì)滑坡穩(wěn)定性計(jì)算評(píng)價(jià)和滑坡推力計(jì)算進(jìn)行了詳細(xì)說明。
This is a hot issue in the medical image processing . this paper applies slice - by - slice method to separate the slice into many small regions , then judge if these regions distribute seed point or not according to some rules . after that , choose the seed point as the center of a circle and make the region growing inside this circle , then conform the roi ( region of interesting ) into a whole liver tissue 本文采取slice - by - slice的分割方法,把要分割的切片分成許多小區(qū)域,根據(jù)一定的規(guī)則,判斷這些小區(qū)域是否分配種子點(diǎn),接著在分配有種子點(diǎn)的區(qū)域進(jìn)行區(qū)域增長,然后把小區(qū)域分割得到的roi ( regionofinteresting )整合成整個(gè)肝臟組織。