面块切片在三维地震资料解释中的应用

目前的三维地震资料解释方法仍停留在二维解释的基础上。面块切片解释改变了传统的解释方法，利用了更多的三维信息，比较充分地发挥了三维数据体的三维立体优势，使解释过程更直观、更清楚，提高了解释精度和速度。     

煤电钻技术在探放老空水中的应用

通过 对采 空区 积 水规 律的 分 析与 研究 ,提 出在 积 水采 空区 下 沿空 掘进 采 用煤 电钻 探 放水 技术 及 方法 ,解 决了钻 机探 放 水的 塌孔 问 题,既保 证了 沿 空掘 进的 安 全,又 取 得了 较大 的 经济 效益 。     

山西墨镫-左权铁路南段地质灾害危险性模糊综合预测评价

新建铁路工程用地地质灾害危险性评估的特点往往是地质灾害的种类多，影响因素复杂，常规方法不易客观定量的体现各区段在危险性方面的差异。本文在介绍模糊综合评价法基础上，结合实例探讨了模糊综合评价法在新建铁路工程用地地质灾害危险性评价中的应用。     

Geology of the summit limestone of Mount Qomolangma (Everest) and cooling history of the Yellow Band under the Qomolangma detachment

Abstract   Newly discovered peloidal limestone from the summit of Mount Qomolangma (Mount Everest) contains skeletal fragments of trilobites, ostracods and crinoids. They are small pebble-sized debris interbedded in micritic bedded limestone of the Qomolangma Formation, and are interpreted to have been derived from a bank margin and redeposited in peri-platform environments. An exposure of the Qomolangma detachment at the base of the first step (8520 m), on the northern slope of Mount Qomolangma was also found. Non-metamorphosed, strongly fractured Ordovician limestone is separated from underlying metamorphosed Yellow Band by a sharp fault with a breccia zone. The ⁴⁰Ar–³⁹Ar ages of muscovite from the Yellow Band show two-phase metamorphic events of approximately 33.3 and 24.5 Ma. The older age represents the peak of a Barrovian-type Eo-Himalayan metamorphic event and the younger age records a decompressional high-temperature Neo-Himalayan metamorphic event. A muscovite whole-rock ⁸⁷Rb–⁸⁶Sr isochron of the Yellow Band yielded 40.06 ± 0.81 Ma, which suggests a Pre-Himalayan metamorphism, probably caused by tectonic stacking of the Tibetan Tethys sediments in the leading margin of the Indian subcontinent. Zircon and apatite grains, separated from the Yellow Band, gave pooled fission-track ages of 14.4 ± 0.9 and 14.4 ± 1.4 Ma, respectively. These new chronologic data indicate rapid cooling of the hanging wall of the Qomolangma detachment from approximately 350°C to 130°C during a short period (15.5–14.4 Ma).     

藏北双湖地区上三叠统肖茶卡群的重新厘定及其地质意义

在双湖地区肖茶卡一带上三叠统肖茶卡群中发现2套砾岩，根据岩石组合、生物化石和界面特征，以2套砾岩为标志层。将原肖茶卡群分解为3个组级岩石地层单位，由下至上分别为肖切堡组、角木茶卡组和日干配错组。从岩石地层、生物地层和层序地层方面阐述了3个组级地层单位的特征和划分的意义。     

Dynamic process analyses of saline intrusion with over-exploitation by coupled flow and dispersive modelling

Understanding of saline intrusion into coastal aquifer is an important issue in management and protection of groundwater resource, which can be well achieved by groundwater modelling. To explain some phenomena of correlation between groundwater level and salinity in observation wells in coastal area, the authors compare the migration velocity of saline particles and transmission velocity of water pressure and derive analytical equations of these two velocities for plane and radial flows. The driving force and resistance of saline intrusion were analysed based on the analytical modelling. The destruction and reconstruction of the equilibrium between fresh water seepage towards sea and saline dispersion to inland were considered as an essence of whole intrusion process. The dynamic process of seepage and dispersion at different stages of saline intrusion were analysed under groundwater over-exploitation. The basic equations of saline intrusion were derived and the mechanism of transitional zone movement was discussed. These constitute coupled seepage–dispersion theory of saline intrusion, which becomes an important supplement to existing theory of saline intrusion. As a case study on saline intrusion in Guangrao County in Eastern China, this theory was applied to predict the development of saline intrusion in the study area.     

地应力与巷道布置关系的理论研究

初始地应力是地下工程围岩稳定与支护结构设计的一个基本参数。介绍了地应力计算原理 ,并根据矿井实测地应力资料 ,分析了初始地应力场与巷道布置及巷道破坏形式的关系。为今后选择巷道掘进方向和改进巷道支护方案提供了依据。     

层状粘弹性介质中SH波的反射、透射问题

处理粘弹性介质有两种方法,一种是在运动方程中加入介质的粘滞性因素,另一种是从本构方程入手,建立介质的粘弹性模型。后一种方法在研究介质物理性质上具有直接性,是目前使用较为普遍的处理方法。从本构方程的角度,以波尔兹曼(Bo ltzm ann)叠加原理为基础,建立积分型本构方程,进而建立粘弹性介质波动方程,得到二维粘弹性平面波解,并研究了层状粘弹性介质分界面处平面波的反射、透射问题,计算反射、透射系数CR、CT,同时进行了一定的理论分析。     

中值滤波技术在遥感图像处理中的应用

利用中值滤波技术能够很好的抑制噪声和保护边缘信息这一特性,用不同的滤波窗口对遥感图像进行处理,并做出处理后图像的归一化差值图像。通过图形分析发现差值图像上的信息比原始图像细节信息更丰富,某些地质现象更清晰。     

Torsional response of pile embedded in a poroelastic medium

The response of a cylindrical elastic pile embedded in a homogeneous poroelastic medium and subjected to torsional loading is studied for the first time. Based on the Muki's model, the pile-porous medium system is decomposed into a fictitious pile system and an extended porous medium system. The one-dimensional, vertical, elastic pile and the three-dimensional poroelastic medium are solved, respectively. Considering the mixed boundary-value conditions at the interface of pile and soil, a Fredholm's integral equation of the second kind for the bar-force is established. The force and the displacement of the pile are calculated by applying numerical quadrature.