冻土

冻土与界面断裂韧度KⅡC的实验研究

Experimental study of fracture toughness K ⅱ C for frozen soil

维亚洛夫提出的冻土幂函数蠕变方程为基础，采用Mises屈服准则，对C.C。

C B ялов proposed the frozen soil power function creep equation is a foundation , uses Mises yield criterion , to Modified C.

冻土上很快就形成了一层厚厚的积雪。

Snow soon blanketed the frozen ground .

西伯利亚的冻土地带之下有大量的甲烷气体。

There is a large amount of methane gas under the Siberian tundra .

这样一来就加快了永久冻土的解冻过程，并向大气层释放碳。

And that 'll speed up the thawing6 of permanently7 frozen soils , releasing their carbon into the atmosphere .

同时，更多的降雨而非降雪使得雨滴落在冻土上时形成坚固的冰层，这样一来驯鹿完全没办法把鼻子伸进去进食。

And more rain , rather than snow , when it falls onto freezing ground , forms a hard layer of ice that the animals simply can 't push their noses through to feed .

放射性~（14）C年代法在冰川冻土研究中的应用

Application of ~ ( 14 ) C Dating to the Studies of Glacial Geology and Geocryology

冻土三轴蠕变过程中结构变化的CT动态监测

Monitoring the Change of Structures in Frozen Soil in Triaxial Creep Process by CT

并进行了BP神经网络预测冻土单轴抗压强度的研究。

And has conducted the BP network forecast frozen soil uniaxial compressive strength research .

K0固结后卸载状态下冻土应力-应变特性研究

Study on behavior of stress-strain for frozen soils subjected to k_0 consolidation by unloading triaxial shear tests

针对冻土材料的非线性特点，讨论了非线性临界应变能释放率GC的测试原理和方法，推导了相应的计算公式和参数确定的方法；

The measured technique and principle of nonlinearity GC were discussed , and an algorithm to estimate parameters of frozen soil was formulated .

通过对CT图像及CT数的分析发现：在受载之前冻土结构已经存在孔隙、管状孔隙和低密度区等初始缺陷；

Analysis of CT-images and values during deformation shows that there is already a variety of initial structural damages , such as micro-holes , pipe-shaped holes and low-density regions before loading .

提出了基于CBR值和剪切强度双指标控制的级配碎石组成设计方法及适宜多年冻土地区的施工工艺。

Put forward to graded broken stone design methodology based on CBR and shear strength and construction method in perennially frozen soil zone .

通过对-5℃冻结黄土的蠕变CT扫描发现，在单轴蠕变过程中土层密度和CT值在加荷瞬间增加后持续减小，冻土的体积随时间的发展而持续增加；

Through CT scanning , it was found that the density and CT value of soil layer decreased continuously after instantaneous increase at the beginning of loading and the volume of frozen soil increased continuously with time in uniaxial creep process of frozen soil .

笔者利用非饱和理论，引用孔隙水压力P1和孔隙气压力P2表达在冻土边坡稳定性分析中，提出用相应的冻土斜坡稳定性分析方法。

Applying the theory of unsaturated soil , the pore water pressure ( P_1 ) and pore air pressure ( P_2 ) are introduced into the analysis of thawing slopes .

DM-10冻土试验仪的研制与应用

Design and Application of Frost Test Instrument Named DM-10

南锚碇基础深基坑支护采用了钻孔灌注桩排桩加多道支撑挡土，2m厚冻土薄壁隔水的新型设计和施工工艺，称为排桩冻结法。

Filling piles and multilayer support and new design and execution technique of 2-m thick frozen soil thin wall water gushing are adopted in South Anchor Cushion Foundation Pit , namely the freezing method of row piles .

青藏铁路是世界瞩目的高原铁路（平均海拔高程为4500m），其中的546km路程经过多年冻土区。

The Qinghai-Xizang Railway is world famous one constructed on plateau with average elevation 4500m above sea level , 546 km length of which passes through ever frozen ground .

根据对新疆40年（1961-2002年）冬季平均冻土深度、最大冻土深度、土壤10cm深度封冻时段资料分析表明。

In this paper , the data of the average and maximum depths of seasonal frozen earth and the frozen duration of soil at 10 cm in depth in Xinjiang during the 40-year period of 1961 ~ 2002 are analyzed .

过去40a来该区多年冻土退化主要表现为最大季节融化深度增大，厚度减薄，地温升高，融区扩大，多年冻土岛消失等。

During the past 40 years , permafrost has been degrading as evidenced by deepening active layer , thinning of permafrost , rising ground temperatures , expansion of taliks , and disappearance of permafrost islands .

根据粗砾石的Balch效应和级配改良粗粒层自然对流效应，分析级配改良结构性路基保护多年冻土的热学工作机制；

The embankment model was built , and the thermo-mechanism was studied to protect permafrost by the effects of Balch and natural convection in the coarse gravel layer .

国外对冻土中水分迁移课题的研究

Research in the question of water migration in the permafrost abroad

冻土未冻水室内综合试验研究

The Laboratory Integrated Experiment Research on Unfrozen Water in Frozen Soil

冻土墙计算方法及其在基坑工程中的应用

Application of Frozen Soil Wall in Deep Excavation and its Calculation

加拿大北极西部近海岸多年冻土热状况的数学模拟

Mathematical Modelling of Near-Shore Permafrost Thermal Regimes , Western Canadian Arctic

冻土结构蠕变模拟试验时间常数的确定

Determination of time coefficient in simulation tests of frozen soil structure

冻土区道路翻浆的原因及影响因素

On the causes of road frost boiling in frozen earth area

建立青藏铁路多年冻土区工程的监测体系的必要性

Necessity of establishing monitoring system on multi-year tundra of Qing-Zang Railway

关于季节性冻土对兴隆林区的危害及防治措施

Frozen earth in winter disserves Xinglong forest section and prevention measure

人工冻土破碎块度分布的分形性质

Fractal Properties of Size-Frequency Distribution of Fragments of Artifical Frozen Soil