Spatial effect of environmental regulation measures on industrial structure upgrading from the empirical analysis of Beijing-Tianjin-Hebei region and its surrounding areas

This paper investigates the spatial effect of environmental regulation measures on the upgrading of industrial structure in the integrated development strategy of Beijing-Tianjin-Hebei region and its surrounding areas.In order to reflect the effect of the environmental regulation and different regulation measures more truly,this paper constructs indices of the environmental regulation measures through the results of policy texts quantification.On the basis of the previous research,this paper divides environmental regulation into the following types:personnel and administrative measures of command and control;market-oriented fiscal,taxation,financial and other economic measures;guidance measures.Spatial panel regression results show that administrative measures of command control and market-oriented fiscal measures have a significant role in promoting regional industrial structure upgrading,but not conducive to the advancement of the industrial structure of adjacent areas.Their roles in promoting and inhibition are counteracted,which causes the total effect of industrial structure upgrading of Beijing-Tianjin-Hebei and the surrounding areas are not significant.Personnel measures,financial measures,other economic measures and guidance measures do not have the short-term effect and spatial effect on the upgrading of industrial structure.

Surrounding Rock Failure Mechanism and Control Technology of Gob-Side Entry with Triangle Coal Pillar at Island Longwall Panel in 15 m Extra-Thick Coal Seams

Taking the return air roadway of Tashan 8204 isolated island working face as the background, the evolution law of the stress field in the surrounding rock of the widened coal pillar area roadway during the mining period of the isolated island working face is obtained through numerical simulation. The hazardous area of strong mine pressure under different coal pillar widths is determined. Through simulation, it is known that when the width of the coal pillar is less than 20 m, there is large bearing capacity on the coal side of the roadway entity. The force on the side of the coal pillar is relatively small. When the width of the coal pillar ranges from 25 m to 45 m, the vertical stress on the roadway and surrounding areas is relatively high. Pressure relief measures need to be taken during mining to reduce surrounding rock stress. When the width of the coal pillar is greater than 45 m, the peak stress of the coal pillar is located in the deep part of the surrounding rock, but it still has a certain impact on the roadway. It is necessary to take pressure relief measures to transfer the stress to a deeper depth to ensure the stability of the triangular coal pillar during the safe mining period of the working face. This provides guidance for ensuring the stability of the triangular coal pillar during the safe mining period of the working face.

Deformation-strain field in Sichuan and its surrounding areas based on GPS data

The strain rate in Sichuan and its surrounding areas, and the activity rate and strain rate in two block boundary fault zones were calculated according to the block movement parameters estimated using the station speed obtained from regional GPS station observation data in these areas for 2009e2011 and GPS continuous station data for 2011e2013. The movement field characteristics in these areas were analyzed with the Sichuan Basin as the reference. Results show that the principal strain rate and maximum shear strain rate of the Bayan Har block were the largest, followed by those of the Sichuane Yunnan block and Sichuan Basin. The deep normal strain rate in the Longmenshan fault zone was compressive and large over the study period. The normal strain rate in the Xianshuihe fault zone was tensile.

On Innovation of Coordinative Development Mechanism of Science and Technology Park with Surrounding Areas under Promotion of the Government——Case Study on Three Science and Technology Park in Dongguan

Science and Technology Park, which plays a very important role in promoting rapid development of regional economy, has enjoyed various preferential policies in its unique development since China’s reform and opening up, which oppositely shows that the government has overlooked development outside the park and resulted in negative competition between the science and technology park and surrounding areas in resources and industry development, etc. Therefore, it is necessary and urgent to overcome the existing obstacles against coordinative development between the park and surrounding areas, to explore paths where the two can development coordinately and to achieve new breakthrough and innovation in coordinative development in subject, object, platform and mechanism.

Research into the Regional Characteristics of the Tectonic Stress Field in Jiashi, Xinjiang and Its Surrounding Areas

Jiashi and its surrounding areas are composed of many structural zones. Using the focal mechanism solutions of 59 moderately strong earthquakes in Jiashi and its surrounding areas, and combining these with the calculation results of system cluster and stress field inversion, we aualyzed the evolvement characteristics of the stress field for different times and different regions. The results were as follows： The earthquakes in Jiashi are mainly strike-slip. However, those of the Kalpin block are mainly reverse events, showing an obvious thrusting. The regional characteristics are different from other areas. The direction of the regional principal stress field is near NS. However, under different tectonic backgrounds, the directions of the stress fields are different. The direction of the principal compress stress is near NS in the Kashi-Wuqia area. But before and after the 3 earthquakes with M7.0, dynamic evolution from NW to NS and then to NE with time process was observed. The Kalpin block has been dominated by a consistent stress field in the NW direction for a long time. However, the direction of the stress field of the Jiashi region is NE. Since 1996, the direction of the regional stress field has changed obviously. The direction of the P axis was deflected towards the NE, and the plunge angle increased. The result shows clearly the regional characteristics and variation of the distribution pattern of the stress field in different tectonic environments.

Impacts and Countermeasures of Climate Change on Animal Husbandry in Qinghai Plateau and Its Surrounding Area

The paper aims to study the impacts and countermeasures of climate change on animal husbandry in Qinghai plateau and its surrounding area,and evaluate the effect of countermeasures.Results showed that：First,the annual mean temperature,annual mean maximum temperature and annual mean minimum temperature showed an increasing trend in Qinghai plateau during the time from 1961 to 2008; the annual precipitation had not obvious change,but the obvious feature of seasonal change; wind speed and sunshine hours showed a decreasing trend during the time from 1961 to 2008.Secondly,under the current climate condition,grassland productivity showed a decreasing trend,and the grassland theoretical capacity affected by grassland productivity decreased too; warm winter was in favor of livestock overwintering safely,which resulted in a high level of the survival rate of young stock; temperature increasing and precipitation decreasing were beneficial to the fatness of livestock,but the meat yield of livestock was affected by some negative factors such as grassland degradation; livestock diseases had a close relationship with weather condition,and adverse weather condition may arose many diseases of livestock.Thirdly,in view of the current problems of livestock production,we took a series of countermeasures including grass industry construction,livestock improvement,developing new modes of animal husbandry,control and prevention of stockbreeding diseases and insect pests and recovery of meteorological disasters,which played a important role in promoting grassland productivity,solving the problem of the imbalances between livestock and forage,protecting the ecological environment and improving livestock performance.

Mountain Land Use Planning of Metropolitan Suburbs:the Case of the Jinyun Mountain and Its Surrounding area,Chongqing,China

Open space of metropolitan suburbs in mountain region, has been increasingly becoming the coupling mosaic structure of industrial actions and landscape behaviors. However, the local governments, when making land use planning, often aim at economic development, and rarely refer to the coordination of compatibilities and conflicts between industrial actions and landscape behaviors in the mosaic structure. In this study land use in the Jinyun Mountain and its surrounding area, Chongqing is adjusted by gray multi-objective programming approach and local-level decision-making process to cope with conflicts between objectives for human welfare and objectives for landscape conservation. The results indicate that： 1） the compatibilities and conflicts among different behavior characters and different landscape types result in the compatibilities of landscape to human behavior; 2） a land use planning in the study area is produced based on the sustainable land use and social-eco development, which pays more attention to the resources and environment constraints and economic objectives, and follows the distribution law of rare resources; 3） in the study area, cultivated land of 1,207.27 ha can meet the demands for food and byproducts by the residents there, orchard land and forestland of 632.55 ha, 2,276.61 ha, respectively can provide enough spaee for the local people to improve their living structure and meet their demands for reereational activities, and urban residential land, rural residential land, mining land and transportation land of 1107.60 ha, 120.27 ha, 162.48 ha, 100.91 ha, respeetively can satisfy the resident＇s eeonomie development and infrastructures; 4） the equilibrium among industrial actions, landscape accessibility and ecological conservation can be obtained by analyzing the possible impaets of human activities on landscape eeologieal proeess in open spaee of metropolitan suburbs in mountain areas.

Analysis on the Characteristics of Climate Changes in the Surrounding Area of Qinghai Lake

[Objective] The aim was to study the characteristics of climate changes in the surrounding area of Qinghai Lake.[Method] Based on the data of temperature,precipitation and sunshine hours from 5 representative meteorological stations in the surrounding area of Qinghai Lake during 1961-2007,the annual,seasonal and decadal variation of meteorological factors were analyzed.[Result] In recent 47 years,temperature showed obvious increase trend in the surrounding area of Qinghai Lake,and annual average temperature increased with the climatic tendency of ≥0.30 ℃/10 a,while annual average minimum temperature increased more significant than annual average temperature and annual average maximum temperature;annual mean precipitation decreased with the climatic tendency of-3.67 mm/10 a,and precipitation in spring and autumn reduced obviously,while precipitation in summer and winter increased slightly;annual sunshine hours also showed decrease trend with the climatic tendency of-1.79 h/10 a,while sunshine hours decreased most obviously in summer,and next came winter,while there was no obvious decrease in spring and autumn.[Conclusion] The study could provide theoretical references for the effective prevention of meteorological disasters in the surrounding area of Qinghai Lake.

Effects of Social and Economic Development of Regions Surrounding Chao Lake on Water Quality Change of Chao Lake

The research analyzed social and economic development around Chao Lake as well as changes of water quality in Chao Lake and explored the relation- ships of local population and GDP with water chemical oxygen demand （COD）, total phosphorus （TP）, total nitrogen （TN）, chlorophyll and eutrophication index. The re- sults showed that population around Chao Lake and GDP kept growing from 2001 to 2013, and water quality was improving. In addition, correlation analysis indicated that except of water eutrophication, GDP and population showed inverse correlation with other indices, demonstrating that water quality has been effectively controlled in Chao Lake recently.

Controlling Effects of Surrounding Rock to Coal Seam Gas Occurrence

Surrounding rock of coal seam was one of the important factors to gas occurrence. The coal seam gas occurrence was studied by the index of roof strata thickness or sand content rate;we found that there were certain shortcomings. In order to reasonably evaluate the influence of coal seam surrounding rock on gas occurrence in Panji mining area, we quantitatively evaluated the effect of coal seam surrounding rock on gas occurrence by influence coefficient of roof strata thickness, and built six mathematical models of the variational gas content in the mining area which is divided into six gas geological units. The results shows that the coal seam gas content is mainly influenced by 20 mroof strata in each gas geological unit, the gas content presents the tendency of increase, and with the influence coefficient of strata thickness increases, they exist a significant linear relationship.

废弃矿区周边受污染水体生物修复技术

废弃矿区中受污染的水体可能会渗入地下水或河流,导致附近的水源污染。为此,采用生物修复技术,对废弃矿区周边受污染水体的修复方法展开研究。分析了矿区周边环境以及相关气候信息,确定该矿区周边污染水体污染物分布特征,根据分布结果布设样本测试点;利用生物膜法在样本测试点中进行污染水体的修复,修复过程中,需要对微生物实施培养、驯化,进一步增加微生物降解污水的活性;将驯化好的污泥转置进IC厌氧反应器中,产生氧化生物膜,投入测试点水域中,通过污泥吸附作用产生氧化生物膜,实现污染水体生物修复。实验结果表明,利用生物膜方法对污染水体进行修复,能够有效去除水体中总石油烃、多环芳烃等污染物质,并中和水体酸碱度,使水体完成修复后达到可排放安全标准。

基于监测台网加速度信号分析的上海周边区域地震影响评价

2021年11月至2023年8月期间,上海市周边区域共发生了5次有感地震,分别为江苏盐城市大丰区海域5.0级、江苏常州市天宁区4.2级、黄海海域4.8级、上海市青浦区3.1级和山东德州市平原县5.5级地震,同济大学监测台网的4个测站捕获了这5次地震的场地和典型结构加速度信号,分析了各次地震作用下场地和典型结构的加速度信号的峰值及持时,探讨了各次地震信号的反应谱特征,对照设计反应谱曲线的第一特征段和第二特征段,对这5次周边区域地震对上海市的影响进行评价。

元代后太原地区石匠刻工考究

太原境内的民间石匠数量较多,这些工匠工作的地域范围主要分布在太原周边地区,其中以古交市、娄烦县、晋源区、尖草坪区这四处为中心。除了本县石匠外,还有崞县和稷山等地的外来石匠。多数石匠间的关系为兄弟、父子或师徒,有部分石匠参与多个地区的活动。碑碣的题材内容因地而异,大致分为记事类、墓志铭类和其他类。文章通过对元代后太原地区的石匠刻工进行历史回顾及深入研究,探讨了其留下的历史、科学与艺术价值。

哈尔滨城建初期中东铁路附属地城市街道网络形态的演进与基因解析(1898-1926)

本文基于哈尔滨城建史界定城建初期的时间范围,利用历史舆图与sDNA技术分析城建初期中东铁路附属地城市街道网络形态的演进逻辑,并运用“特征识别-共性归纳-基因解析”的方法解析街道网络形态基因。研究表明.城建初期(1898-1926)附属地先后形成了老哈尔滨、新市街、埠头区等区域的街道网络,本文将其归类为五种形态特征单元,以及它们组合形成的“枝干形”与“放射形”两类街道网络形态基因,体现出西方规划思想与本土地域特征的双重影响。

复采巷道过空巷交叉段围岩控制技术

以宇昌煤业复采区地质条件下回采巷道的围岩控制为工程背景,针对与空巷相交区围岩破碎支护困难的问题,对回采巷道破碎段的围岩控制技术方案及参数进行研究。采用理论计算得出回采巷道煤柱稳定的理论宽度,并通过数值计算得出交叉巷道三角区煤柱弹性核区宽度小于2 m时,需要采用架棚的支护方式维护巷道稳定;通过对掘采期间巷道围岩应力及变形的理论计算及数值模拟分析,确定了合理的架棚支护区域及支护方案;现场实测表明,采用锚网索和工字钢棚联合支护的方式,巷道变形量得到了有效控制。

四川盆地及周缘筇竹寺组与五峰组-龙马溪组页岩孔隙结构对比

四川盆地及周缘筇竹寺组、五峰组-龙马溪组2套页岩是目前中国海相页岩气勘探的主攻层位,但页岩气勘探效果差异较大。为进一步探究这2套海相页岩储层的微观孔隙结构特征及其差异,采用定性和定量相结合的方法(包括场发射扫描电子显微镜、低压CO_(2)/N_(2)吸附、多重分形分析)对研究区筇竹寺组、五峰组-龙马溪组页岩的孔隙结构进行精细表征和对比,并揭示两者的成因机制差异。结果表明,研究区筇竹寺组、五峰组-龙马溪组页岩孔隙结构在孔隙发育程度及类型、孔径分布以及微孔、介孔-宏孔连通性、非均质性等方面存在明显差异。相较于筇竹寺组,五峰组-龙马溪组页岩具有有机质孔隙更为发育、孔隙度高、孔隙连通性较低、非均质性更强、微孔占比高以及孔隙比表面积和孔体积高等特征。导致筇竹寺组、五峰组-龙马溪组页岩孔隙结构差异的原因包括:①沉积环境差异导致两者页岩岩相不同,进而影响原始孔隙的有效保存;②机械压实作用、有机质热成熟作用、热成熟阶段页岩系统的封闭性以及深埋藏阶段强烈的机械压实作用是造成2套页岩孔隙结构差异的关键成岩作用。五峰组-龙马溪组由于其高的生物硅质含量、适中的热演化程度、相对封闭的页岩系统、相对较浅的埋藏作用和相对稳定的构造条件更有利于页岩中残余无机孔隙及有机质孔隙的发育和有效保存。

CMA-MESO模式对2020年夏季四川盆地及周边降水预报性能的评估

利用2020年夏季(6~8月)CMA-MESO模式逐日08:00(北京时,下同)起报的12~36 h逐时降水预报数据和地面—卫星—雷达三源融合逐时降水产品,着眼于小时尺度降水特征,细致评估了CMA-MESO对四川盆地及周边地区的降水预报性能。结果表明,CMA-MESO较好把握了夏季降水的空间分布特征,即小时平均降水量和降水频率的大值区位于四川盆地西部、北部和东部的高海拔山区,而降水强度大值区主要位于山脉迎风坡一侧,但CMA-MESO预报的降水量和频率大值区位置较观测偏南。CMA-MESO合理描述了研究区域内降水量和频率峰值时间位相自西向东逐步滞后的特征,能够把握区域平均的降水量和频率清晨主峰、傍晚次峰的双峰形态以及降水强度的单峰特征,但预报的降水日变化位相超前于观测。CMA-MESO预报的逐时降水量均大于观测,明显的降水量预报正偏差发生于夜间(21:00至次日03:00)和午后至傍晚(14:00~20:00),分别由一般性降水(0.1~10 mm h-1)预报偏差和强降水(≥10 mm h-1)预报偏差主导,其偏差大值区分别位于青藏高原东南缘至四川盆地西部和四川盆地以东、以南地区,模式对热力和动力场的预报偏差结合地形的影响是降水量预报偏差的成因。

环梵净山区域畜禽养殖污染量估算及负荷预警研究

为了解环梵净山区域畜禽养殖污染与环境保护之间是否存在现实矛盾,文章运用排污系数法与土地承载法估算2014-2021年该区域畜禽养殖污染量并对其负荷预警进行分析。结果表明:(1)区域畜禽粪尿、TP、TN污染物排放量总体呈上升趋势,其中粪尿排放量依次是牛>猪>家禽>羊,TP排放量趋于平稳,TN变化趋势较大,各乡镇畜禽粪尿、TP、TN排放量差异较大,其中德旺乡的排放量最多,太平镇最少,其余乡镇变化不大;(2)区域猪粪当量、N、P负荷总体处于上升态势,N、P最大负荷量均未超过欧盟标准,各乡镇负荷变化趋势差异较大,部分乡镇的负荷值已经超过区域均值,污染负荷问题较为严重;区域内畜禽污染预警等级存在上升趋势,污染风险逐渐增大,除太平镇无污染外,其余乡镇在不同时间段均存在污染,负荷预警问题严峻。由此提出调整畜禽养殖结构,合理控制畜禽饲养规模,严格落实保护区规定,精准实施污染治理政策,加大养殖主体技能培训,拓宽养殖主体就业渠道等对策建议。

瑶渠煤矿大巷间煤柱尺寸确定及支护优化

为研究大巷过剥蚀区时大巷间煤柱合理尺寸及围岩稳定性,以瑶渠煤矿西采区Ⅱ回风大巷为研究对象,采用理论分析、数值模拟等研究方法,建立了煤柱尺寸计算模型,揭示了煤柱在8 m、10 m、12 m、14 m条件下巷道围岩应力、位移及塑性区的分布规律,确定了过剥蚀区大巷间煤柱的合理尺寸,并优化了西采区Ⅱ回风大巷的支护参数。研究结果表明,瑶渠煤矿西采区Ⅱ回风大巷与辅运大巷之间煤柱尺寸由14 m减小至8 m时,巷道围岩内的垂直应力由1.381 MPa增加至1.465 MPa、最大位移量增加了12.52%,塑性区逐渐贯通煤柱。当煤柱尺寸为10 m时,煤柱塑性区处于贯通的临界区域,煤柱内部具有一定的弹性核区域,且煤柱尺寸大于理论计算的9.23 m,能够满足巷道围岩的稳定性。综合考虑,确定煤柱最小合理尺寸为10 m。对10 m煤柱尺寸下西采区Ⅱ回风大巷进行支护优化,采用帮部3根锚杆支护后巷道围岩应力、位移和塑性区均显著改善,保证了巷道围岩的稳定性。

回采巷道过断层长短锚索组合支护优化技术

针对玉华煤矿柴家沟井42226工作面运输顺槽过断层时围岩破碎、支护困难、巷道变形严重等问题,分析了原支护方案存在的问题,提出了长短锚索组合支护方案并优化了支护参数。现场实测结果表明,围岩在20 d后开始趋于稳定,顶板最大下沉量为158 mm,底板底鼓量最大为92 mm,两帮收缩量最大为166 mm,分别为原变形量的21.9%、16.4%和25.5%。顶板和两帮锚索受力在13 d后开始逐步稳定在275~285 kN且有小幅度震荡,承载能力还有较大富余,巷道围岩变形得到了有效控制,能够满足安全生产的需要。