非线性几何场论在开采沉陷预测中的应用

以拖带坐标描述法和S－R分解定理的非线性几何场论为基础，分析了初始位形主断面上倾斜、曲率和水平变形计算公式的不合理性，建立了实时位形上的计算公式；利用平均整旋角概念和裂纹产生与扩张的几何准则，建立了确定实时位形上，水下采煤导水裂隙带高度的方法。与经典断裂判据相比，该方法计算简单，应用方便。     

四川及邻区地壳垂直形变特征与地震的关系

对四川及邻区五十年代至八十年代的精密水准复测资料进行处理，绘制了四川及邻区的地壳重直形变速率图、垂直形变速率梯度图和垂直形变速率梯度矢量分布图。结合研究区内构造特征，对上述图件进行分析。指出数处呈四象限分布的图像，结合地震活动进行解释，确定了研究区未来的地震危险区。     

冀北东坪式金矿找矿远景区的岩石磁学研究

通过区域成岩学与岩石磁学的融合，以东坪式大型金矿为例，根据岩石磁学的定量化数据，分析与东坪式金矿成矿有直接成因联系的矿性侵入岩、海西期岩体的磁化率、Q值异常，并以大型的东坪、金厂峪、峪耳崖金矿为已知条件，得到冀北地区东坪式大型金矿主要分布在矿性岩磁性梯度带的初步结论。     

通过比降观测浅析三姓浅滩的水文特性

通过把比降测量的观测成果进行科学的分析 ,得出泥沙淤积的原因 ,并提出了有关的航道测量、整治工程的一些建议     

非均质气藏AVO反演及应用研究

AVO分析的基础是反射振幅随偏移距的变化而变化，实践证明AVO异常在利用地震资料确定天然气方面具有重要意义，,而在AVO的研究中泊松比是直接检测油气的一个极为重要的参数，我们以Shuey(1985)的近 似方程为基础，用改进的Marquart方法未反演目的层的泊松比及界面上下层的泊松比差，这样，一旦获得泊松比，便可估算SI皮速度，孔隙度及杨氏模量等弹性参数，从而进行岩性解释和储层描述。     

应用流体包裹体研究内蒙古巴彦浩特盆地热演化史

通过巴彦浩特盆地石炭系流体包裹体的研究认为 ,不同时代的样品尤其是中晚期包裹体的均一温度与埋藏深度之间存在良好的线性关系。有机质生烃在纵向上可以划分为未熟、低成熟、成熟及高成熟 4个阶段 ,时代上自侏罗系、下至奥陶系 ,跨度较大 ,却经历了相同的地热温度场。本区地温梯度较低 ,仅为 2 8～ 30℃ /km ,所有的升温热事件都发生在中侏罗世以后 ,主要勘探目的层石炭系烃源岩的成熟度处于液态窗阶段 ,有机质成熟、开始生烃的上限时间是侏罗纪以后 ,因此勘探目标应该以寻找晚期成藏为主     

STUDY ON DYNAMIC RESPONSE AND INSTABILITY OF SOIL-ROCK MIXTURE DEPOSIT WITH DIFFERENT STONE CONTENTS AND SLOPE GRADIENTS

Soil-rock mixture deposit is an extremely heterogeneous loose rock-soil deposit formed since Quaternary, which is composed of blocks, fine-grained soil and pore with a certain engineering scale and high strength and has a certain stone content. These soil-rock mixtures accumulated on slopes have been completely destroyed and their mechanical strength is very low. They are widely distributed in the mountainous areas of Southwest China, which poses a great threat to the engineering. Earthquakes occur frequently in Southwest China, and the instability of soil-rock mixture deposit under seismic load is one of the important factors causing the damage to this type of deposit. The dynamic response of soil-rock mixture deposit under seismic load is an important index to study its instability mechanism under seismic load. Based on indoor shaking table model test, the influence of rock content and slope gradient on dynamic response characteristics of soil-rock mixture deposit was studied. In model tests, rock content is 30%, 40% and 50%respectively, and slope gradient varies from 20°, 30° and 40°. Two different seismic loading frequencies and three different excitation strengths were given. The peak acceleration(PGA)amplification coefficients in horizontal and vertical directions of soil-rock mixture deposit were analyzed under the change of rock content and slope gradient. The permanent displacement and deformation law of the top and foot of the slope of soil-rock mixture deposit were analyzed by model test. The experimental results show that the dynamic acceleration response characteristics of the soil-rock mixture deposits at the top and foot of the slope are different under different slope gradients and rock content conditions, and the horizontal PGA amplification coefficients of the soil-rock mixture deposits are also different. With the same seismic frequency and excitation intensity, the horizontal PGA amplification coefficient increases with increased slope gradient, and the rate gets faster. With the increase of stone content, the magnification coefficient of horizontal PGA decreases, and the higher the stone content, the slower the decrease rate of horizontal PGA magnification coefficient. When the slope gradient of soil-rock mixture deposit increases, the corresponding horizontal and vertical PGA amplification coefficients increase with the same seismic frequency and excitation intensity. The amplification coefficients of PGA in the vertical direction are different, but the overall magnification is weaker than that in the horizontal direction. The vertical PGA amplification coefficients of the foot, middle and lower parts of the slope are larger, while the vertical PGA amplification coefficients of the upper and middle parts of the slope tend to decrease. The higher the frequency of seismic wave is, the smaller the vertical PGA amplification coefficient corresponding to the same elevation will be, which indicates that the vertical PGA amplification coefficient is negatively correlated with the elevation. The variation trend of PGA magnification coefficient of soil-rock mixed deposit in vertical direction is different with the change of stone content. Under the same excitation intensity, the larger the slope gradient is, the larger the permanent displacement at the top of the slope will be, and the larger the rock content, the smaller the corresponding displacement at the top of the slope. The permanent displacement of the top of the slope is obviously larger than that of the foot of the slope, which indicates that the magnification effect of the top of the slope is obvious. After the vibration process and sliding of the landslide, the large-sized particles in the soil-rock mixture deposit move downward faster and slip on the surface of the deposit body. There was a very obvious phenomenon of particle sorting in the pile-up at the foot of the landslide body. The results of this study are of practical significance for the analysis of the dynamic response law of soil-rock mixture deposit under seismic load due to the change of rock content and slope gradient.     

天山北坡雪岭云杉树轮宽度年表梯度特征分析

在天山北坡不同区域间隔海拔高度100 m左右采集5个树轮梯度年表,分析树木径向生长沿海拔高度变化的规律。结果发现:在树轮年表特征中,平均轮宽、树龄和敏感度等存在海拔梯度变化,平均轮宽和敏感度随海拔升高而降低,而平均树龄则与海拔高度呈正相关。高海拔采样点在同一区域和不同区域间一致性最好,低海拔采样点次之,而森林中部最差,东部和中部低海拔区域采样点的一致性要好于西部,坡向、坡度等小生境的差异也是影响树轮生长垂直变化规律的重要因素。存在同时影响不同海拔高度树轮生长的环境要素,西部和中部高海拔树木对该要素的响应更显著,在更为干旱的天山北坡中部和东部,对树木径向生长的影响较大的环境因子要多于西部伊犁地区。     

Comparison of Ozone Fluxes over a Maize Field Measured with Gradient Methods and the Eddy Covariance Technique

Ozone(O_3) fluxes were measured over a maize field using the eddy covariance(EC) technique and gradient methods.The main objective was to evaluate the performance of the gradient methods for measuring the O_3 flux by comparing them with the EC O_3 flux.In this study,turbulent exchange coefficients(K) calculated with three methods were compared.These methods were the aerodynamic gradient(AG) method(in which K is calculated by using wind speed and temperature gradients),the aerodynamic gradient combined with EC(AGEC) method,in which the friction velocity and other variables are based on EC measurements,and the modified Bowen ratio using the EC sensible heat flux and temperature gradient(MBR) method.Meanwhile,the effects of the measurement and calculation methods of the O_3 concentration gradient were analyzed.The results showed that:(1) on average,the transfer coefficient computed by the MBR method was 40% lower,and the coefficient determined with the AG method was 25% higher,than that determined with the AGEC method.(2) The gradient method's O_3 fluxes with the MBR,AGEC,and AG methods were 30.4% lower,11.7% higher,and 45.6% higher than the EC O_3 flux,respectively.(3) The effect of asynchronous O_3 concentration measurements on the O_3 gradient must be eliminated when using one analyzer to cyclically measure two-level O_3 concentrations.The accuracy of gradient methods for O_3 flux is related to the exchange coefficient calculation method,and its precision mainly depends on the quality of the O_3 gradient.