x
uploads/alluvium.jpg

alluvium n.(pl. alluviums, -via ) 【地質...

allways fuze

O curve of dsdp607 v30 - 97 show that loess began to deposit on the terrace of the yellow river about 1 . 20 ma b p , and passed thirteen climatic changes from drier and cooler to warmer and wetter later . the turn of sedimentation from alluvium to loess , an event of transformation from accumulation to down - cut of the yellow river , indicates a sharp tectonic uplift occurred around 1 . 2 ma b p . key words : loess - paleosol ; susceptibility ; climatic changes ; tectonic movement ; yellow river ; yangfan section 通過對楊范剖面黃土地層巖性特征沉積結構質量磁化率和頻率磁化率的分析及與深海氧同位素曲線的對比,劃分了剖面地層,初步確定了黃土沉積始于1 . 20 ma b p ,黃土沉積以來該區發生了13次大的干冷暖濕氣候變化沉積轉型指示河流強烈加積轉變為河流侵蝕,代表約在1 . 20 ma b p發生過一次強烈的構造抬升事件。

In order to accurately calculate the mining induced subsidence in thick alluvium areas so as to decrease the mining damage and environment disruption , the calculation of surface subsidence caused by water loss of clay was discussed based on probability integral method and used in a real case 摘要為了更加精確地計算厚沖積層礦區的煤礦開采沉陷問題,減小采動損害與環境破壞,基于煤礦開采沉陷計算的概率積分法,探討了由于黏土體失水引起的地表沉陷計算問題,推導了黏土體失水引起的地表下沉計算公式,并應用于煤礦實際地表沉陷,加以分析論證。

The influences of the properties of alluvium deposit , the properties of diaphragm wall concrete , the construction sequence of diaphragm walls , the distance between diaphragm walls and dam toe and the shape of diaphragm walls on the stress - deformation behaviors of diaphragm walls of concrete face rockfill dams were studied 研究了覆蓋層特性、防滲墻混凝土特性、防滲墻施工順序、防滲墻與壩趾之間距離和防滲墻形狀對于面板堆石壩防滲墻應力變形性狀的影響。

The simulation tests were carried out to study the variation of the vertical additional force acted on shaft lining by surrounding soils during dewatering of alluvium by means of multi - function rig in vertical shaft 摘要利用大型豎井模擬試驗臺,對沖積層疏排水過程中立井井壁受到的豎直附加力的變化規律開展了模擬試驗研究。

Some syndepositional soil - layers disturbed by earthquakes were discovered in thick - bedded alluviums of eocene zhubidian formation in anqiu area of tancheng - lujiang seismic zone 摘要在郯廬地震帶的安丘地區,發現始新世朱壁店組厚層沖積層中發育一些同沉積的地震擾動巖土層。

Most soils in pakistan are derived from water - transported ( alluvium ) or wind - blown ( loess ) material , yet some have been formed by in - situ weathering of rocks 巴基斯坦大多數土壤由水成(沖積)或風成(黃土)母質發育而來,也有一些是當地母巖風化而成。

The stress - deformation behavior of diaphragm walls of concrete face rockfill dam built on thick alluvium deposit was analyzed using the numerical analysis method 摘要采用數值分析方法對深覆蓋層上混凝土面板堆石壩的防滲墻應力變形性狀進行了研究。

The stress - strain characteristic of two typical cfrd built on deep alluvium foundation is analyzed by using numerical method 摘要對于深覆蓋層上的面板堆石壩,采用將趾板直接置于覆蓋層地基上的垂直防滲方式是一種較為合適的設計方案。

There , on the flat alluvium beds of that mighty river , they had been reconstructed exactly - to the last screw - as they had been in germany 在長江的平坦沖積平原上,又嚴格按照在德國的樣子,一個螺絲也不差地把設備重新組裝。

Each wave of time contributes its alluvium , each race deposits its layer on the monument , each individual brings his stone 時間的每一波濤都將其沖積土堆放起來,每一種族都將其沉淀層安放在文物上面,每個人都添上一塊石頭。

Three main rock types make up the geology of singapore : igneous , sedimentary and alluvium . where is the main source of granite found 形成新加坡地質的三種主要巖石類型:火成巖、沉積巖和沖積巖。哪里是花崗巖的主要來源地?

Based on the avaliable isotope samples , we found that fon - lin alluvium , groundwater can be conceptually divided into three layers 此外由分析氫、氧同位素的組成,可定性地說明該區重要的水文循環特性。

Preparation and application of high strength and high performance concrete of drilling shaft lining in special deep alluvium 特厚沖積層鉆井井壁高強高性能混凝土配制研究及其應用

In places , hill - slope debris forms a mantle over the bedrock and alluvium fills some of the valleys 在部分地方,基巖表面由巖石碎屑堆積形成覆蓋層,而部分河谷則有沖積層。

The soil is classified to tidal sandy soil , derived from river alluvium with sandy loam texture 土壤分類為河流沖積土發育的潮汐沙土,砂壤土質地。

Practice on fully mechanized coal mining under village with deep mining depth and thick alluvium 厚沖積層大采深村莊下綜放開采實踐

Loading and structure of shaft lining by shaft drilling in deep alluvium 深厚表土中鉆井法鑿井的井壁外載和結構

Examples of application of the method include the results of a regional stream water and alluvium study in northern scotland . 作為方法應用的實例,列舉了蘇格蘭北區域河水和沉積物研究所得結果。

Much of the higher reflecting alluvium and limestone fell along the toe portion of the characteristic curve . 大部分反射率較高的沖積層和灰巖都位于特性曲線的趾部。