煤矿采空区钻孔注浆治理工艺

钻孔注浆充填固结处理煤矿采空区塌陷是一种经济快捷的有效方法，本文就其施工工艺方法进行了简单分析，期望能为其它类似工程提供参考。     

陆地表层地质环境质量综合评价与地质灾害系统分析——以广东沿海地带为例

将广东沿海陆地表层地质环境划分为构造稳定性、坡面稳定性和地基稳定性三个评价层面 ,其中包括由 9个指标构成的评价指标体系 ;确定了各指标的权重和五级分级标准和环境质量的五级标准 ;使用模糊数学综合评价模型将广东沿海 190个评价单元划分为 2 2个地质环境质量区。在灾害基本数据库和灾害时空分布分析的基础上 ,划分了 9个地质灾害一级分区及 32个二级分区 ,确定了地质环境、气候气象和人为活动因素三大类致灾主控因子 ;构造了三种地质灾害系统的概念模型和灾害预测指标体系框架 ,建立了地质灾害地理信息系统。     

威海-蓬莱活动构造分段

威海－蓬莱断裂带是山东半岛北部最重要的一条构造带，也是华北地区张家口－威海构造带的组成。通过东、西部侵蚀面高度统计、河长分形统计、河网密度统计和地震震中密度统计分析研究，表明断裂带具有东、西分段特征。西段自新构造晚期以来的活动性较强，是今后地震及其地地质灾害监测和防治的重要地段。     

Seismo-tectonic divisions of strong earthquakes with M_s≥7.0 and their tectonic geomorphology along Xianshuihe-Xiaojiang fault zone

IntroductionXianshuihe-Xiaojiang fault zone is an important active fault zone and a strong earthquake belt in the southeastern margin of Qinghai-Tibet Plateau (Figure 1). Since 814 AD a total of 14 earthquakes with M ( 7, including one of magnitude 8.0, took place there. This large-scale fault zone runs from north to south, includes the northwesterly Xianshuihe fault, the near-NS An(ninghe fault, NNW Zemuhe fault, and near-NS Xiaojiang fault. It forms the east boundary of Sichuan-Yunn…     

A New Coastal Marine Ecosystem Model Study Coupled with Hydrodynamics and Tidal Flat Ecosystem Effect

A new coastal marine ecosystem model was developed, which was composed of pelagic and benthic ecosystems, and was applied to Mikawa Bay, Japan. This model deals with variations of biochemical and physical interactions among dissolved oxygen and C–N–P species (composition formed out of carbon, nitrogen and phosphorus elements) so that it resolves the flux dynamics of carbon, nitrogen, phosphorus and oxygen elements. The physical and biochemical mechanism figured in this model is constructed for the purpose of simulating the estuarine lower trophic ecosystem, in areas where the sea was too deep for light to reach the sea-bottom. As a result of coupling the benthic with pelagic system, the effect of process of sedimentation and nutrient diffusion back to the pelagic system could be indicated. In addition, by implementing the tidal flat ecosystem model's calculation result, the integrated model can include the effect of water purification in tidal flats where the light can reach the sea-bottom, and where sea-weed, sea grass and benthic algae exist. In this study, the model indicates that oxygen-depleted water exists at the sea-bottom especially in summer mainly caused by an increase of oxygen consumption in the benthic system and a decrease of the vertical mixing water process. Furthermore, by comparing the case – with the tidal flat ecosystem model and the case without it, the effect of water purification of tidal flat estuaries was indicated. From the viewpoint of a short time scale, the tidal flat has the potential to restrict red tide (rapid increase of phytoplankton), and from the viewpoint of a long time scale, it restricts the sedimentation of detritus. Restricting the sedimentation prevents oxygen-depleted water occurring in the coastal marine system of Mikawa Bay.     

Seismo-tectonic divisions of strong earthquakes with M S≥7.0 and their tectonic geomorphology along Xianshuihe-Xiaojiang fault zone

Seismo-tectonic areas of historical strong earthquakes with M _S≥7 along Xianshuihe-Xiaojiang fault zone are divided, and their individual fault-pattern and tectonic geomorphology are analyzed. Those strong-earthquake areas are located in some special parts of the fault zone, where the major branch-faults of the fault zone form left stepping, parallel, and fork-like patterns. In the strong-earthquake areas structurally complicated basins are developed, such as pull-apart basins in fork-like area, in double stepping area, and in stepping and fork-like areas. Foundation item: Chinese Joint Seismological Science Foundation (9507424). Contribution No. 2001A003, Institute of Crustal Dynamics, China Seismological Bureau.     

Studies on40Ar/39Ar thermochronology of strike-slip time of the Tan-Lu fault zone and their tectonic implications

Samples of mylonite, ultramylonite and phyllonite were collected from 5 localities in the Anhui part of the Tan-Lu fault zone for⁴⁰Ar/³⁹Ar chronological studies. Among them 4 samples from 3 localities on the eastern margin of the Dabie orogenic belt yielded⁴⁰Ar/³⁹Ar plateau ages of 128 —132 Ma; and 2 samples from the western margin of the Zhangbalin uplift and eastern margin of the Bengbu uplift gave the same⁴⁰Ar/³⁹Ar plateau ages of 120 Ma. Isochron analyses and other lines of evidence suggest that the data are reliable. The data are interpreted as cooling ages of sinistral strike-slip deformation of the Tan-Lu fault zone. The younger ages from the north might be related to slower strike-slip rising. These results indicate that the large-scale left-lateral displacement in the Tan-Lu fault zone took place in the Early Cretaceous, rather than in Late Triassic (Indosinian) as proposed by some geologists. Therefore, this fault zone is an intracontinental wrench fault rather than a transform fault or suture line developed during formation of the Dabie orogenic belt.     

辽宁东胜地区金、银、多金属剪切带矿床控矿构造特征

运用剪切带控矿理论，通过对剪切带内变形岩石的应变测量和不同惊讶的成矿构造研究，阐明了辽宁东胜地区金、银、多金属剪切带矿床的控矿构造特征，探讨了此类矿床控矿构造与矿化的关系。     

锦屏隆里地区剪切构造变形的初步研究

在隆里地区新元古界下江群中发育有剪切变形的构造，形成脆－韧性剪切带（过渡性剪切带）。按其产状可分为切层和顺层过渡性剪切带两类，具有较典型的脆性－韧性变形的宏观和微观特征。此类变形是地壳浅层次剪切构造作用产物，显示了江南造山带外带的特征     

全球气候变化下青藏公路沿线冻土变化响应模型的研究

利用英国Hadley气候预测与研究中心GCM模型HADCM2预测的气温变化背景，分别提取青藏公路沿线地区在2009年，2049年和2099年的气温参数，考虑年平均气温和年平均地温的关系及年平均地温与海拔，纬度的关系模型，多年冻土下界分布模型和地温带分带，建立青藏公路沿线多年冻土下界分布的响应模型和多年冻土地温带的响应模型，研究结果表明，2009年青藏公路沿线的冻土变化较小，多年冻土极稳定带,稳定带和基本稳定带仅发生微弱的变化，基本稳定过渡带和不稳定带变化较大，多年冻土,逐渐退化，2049年青藏公路沿线多年冻土各地温带变化较大，但仍以基本稳定过渡带和不稳定带变化最大，多年冻土发生较大范围的退化；2099年后青藏公路沿线冻土发生了很大的变化，多年冻土发生大面积的退化，融区面积逐渐增大，多年冻土地温带也发生了较大的变化，其中多年冻土上带仅保留了稳定带，极稳定带全部消失，稳定带和基本稳定带全部转化为不稳定带。