共查询到20条相似文献,搜索用时 107 毫秒
1.
2.
3.
通过对沈阳城区50个地下水温监测井在不同时段地下水温的监测和13个水源热泵工程抽水井和回灌井不同埋深的水温监测,掌握了该区域地下水温空间分布规律,通过地下水温度分布特征分析对地下水源热泵工程设计以及指导水源热泵工程规划和建设具有重要作用。 相似文献
4.
介绍了地下水源热泵的应用现状及成井存在的问题,分别从管井设计计算、成井工艺和回灌方法等方面,对如何提高成井质量进行了全面的分析,并提出了相应的解决措施。强调为避免出现地面沉降和地下水质污染等问题必须做好水文地质勘探、控制成井质量及采用合适的回灌方式,并对管理部门今后的工作提出了一些建议。 相似文献
5.
6.
童林旭 《地下空间与工程学报》1994,(3)
日本的城市地下空间利用正在从浅层向深层发展。深度加大后,出现了许多新的问题,如技术问题、经济问题、法律问题等。本文根据最新资料,围绕大深度地下空间开发利用中一些技术问题的研究动态,考察日本城市深层地下空间利用的发展方向。 相似文献
7.
《墙材革新与建筑节能》2016,(6)
地下水源热泵能否长久高效运行,核心问题在于地下水的回灌问题。我国经过"十一五"期间可再生能源建筑应用示范项目和"十二五"期间可再生能源建筑应用示范城市和农村示范县的组织实施,已完成超过亿平方米的地下水源热泵示范项目。项目实施过程中,不乏有项目运行几年,出现回灌不畅、回灌不彻底甚至无法回灌的现象。本文为"十二五"国家科技支撑计划项目《浅层地热能集成应用技术与评估及示范》(2011BAJ03B09)的研究成果,以中粗砂地层典型地层为例,从回灌系统设计、回灌井及系统施工、系统维护保养、关键工艺技术提出不同的回灌要求,以确保地下水完成回灌,实现地下水源热泵的长期高效运行。 相似文献
8.
9.
《建设科技(建设部)》2017,(12)
细砂地层具有孔隙度小、渗透率低、地下水径流慢,补给和排泄条件弱等特点,细砂地层在回灌过程中,空气不可避免的与地下水接触,致使地下水产生气泡,化学、生物变化、结垢并形成沉淀,气泡堵塞,导致管路、换热器和过滤管堵塞。针对上述问题从回灌系统设计、施工、维护保养、关键工艺技术提出不同的回灌要求,以确保地下水完成回灌,实现地下水源热泵的长期高效运行。 相似文献
10.
再生水回灌地下的水质安全控制指标体系探讨 总被引:1,自引:0,他引:1
以再生水地下回灌为研究对象,通过分析水体中病原微生物和化学污染物对人体健康和生态系统的危害途径,结合回灌方式和回灌目的,提出了回灌地下的水质要求,并初步筛选出卫生学指标、毒理学指标、物理学指标、综合性指标等作为再生水地下回灌的水质安全评价指标。 相似文献
11.
The use of a deserted clay quarry to collect iron manufacturing-derived special wastes has been carefully assessed with a
view to protecting ground water resources. The shallower ground water is of low quantity and poor quality. It is encompassed
by a calcarenite aquifer, the bottom of which consists of clays. A limited calcarenite layer is found below, transgressively
lying over the main Apulian carbonate shelf. The aquifer carbonate rocks enclose large ground water resources which ultimately
flows into the Ionian Sea. A plastic waterproof diaphragm inert to percolation products has been installed to protect ground
water against pollution hazards resulting from the disposal of industrial wastes. The dump is actually located in the vicinity
of major industrial plants, the basements of which corresponds to the shallow aquifer. Both the basements and the railway
cuttings greatly affect the ground water flow. Hydrogeological applied numerical calculation techniques have been used to
evaluate the impact of a drainage trench on the ground water flow together with any noticeable influence of the latter on
construction works and industrial plants in place.
Received: 22 September 1998 · Accepted: 1 December 1998 相似文献
12.
介绍了地暖的组成及其材料和设备,探讨了地暖系统的计算,研究了加热管的布置和敷设,详细地阐述了地暖系统的施工工艺和技术要求,以完善和推广热水地面的辐射采暖工艺。 相似文献
13.
以坪上应急引水工程为例,通过对比分析采用排泄法对坪上泉岩溶水天然资源量进行计算,并用补给量法对其校核,经过计算与系统分析,对坪上泉岩溶地下水资源进行评价,结果表明,用排泄法计算结果作为坪上泉的岩溶水资源是可靠的。 相似文献
14.
15.
A new technique is described for nitrate removal from ground water. This technique is a combination of ion exchange and biological denitrification. Nitrate is removed by ion exchange. Regeneration of the resin in a closed circuit is achieved with a denitrification reactor. In contrast with traditional denitrification procedures there is no direct contact between ground water and denitrifying bacteria. Also brine production and regeneration salt requirements are minimal as compared with conventional regeneration of ion exchange resins. The basic design criteria and the first pilot plant results are presented. The pilot plant results show that the process is very attractive when compared with ion exchange and biological denitrification as separate techniques. Ground water with a relatively high sulfate concentration can be treated when a nitrate selective resin is used. 相似文献
16.
以太原邮电综合业务楼一层大厅地面工程为例,探讨了水刀石材地面板质量控制措施,针对施工过程中出现的不合格缝隙进行了分析,总结归纳了原因及影响因素,并提出了相应处理措施,从而解决了水刀石材地面铺贴缝隙超标问题。 相似文献
17.
GMS在临汾盆地地下水数值模拟中的应用 总被引:9,自引:0,他引:9
针对临汾盆地地下水降落漏斗、地面沉降和地裂缝等许多环境地质问题 ,通过GMS建立了地下水水流三维数值模型 ,提出了合理利用地下水资源的措施 ,为地下水资源的优化管理提供了科学依据。 相似文献
18.
着重阐述了在地铁暗挖区间隧道中采用地表注浆的必要性和地表注浆的施工技术和要求,通过在广州地铁二号线鹭江折返线隧道中的实际应用,取得了良好的效果,并且受到业主和监理的充分肯定。 相似文献
19.
Chemical injection to prevent building damage induced by ground water drainage from shallow tunnels 总被引:1,自引:0,他引:1
K. Kucuk M. Genis T. Onargan C.O. Aksoy A. Guney R. Altnda 《International Journal of Rock Mechanics and Mining Sciences》2009,46(7):1136-1143
Progressive developments in the application of chemical injection have been acquired through out the centuries, starting from the ancient Romans. The method of silica based injection has been employed for a long time and has replaced the polyurethane injection method since the 1970s as a remedy in difficult ground conditions including fractured rock. Currently, various applications of chemical injections are available in civil and mining engineering, including ground stabilization, support anchoring, strata sealing, reduction and diversion of ground water flow and water ingress and creation of a load-bearing ring in tunneling. Drainage of the ground water in the overburden during tunneling will result in an increase in ground settlement by the evacuation of water and closure of the pores in overburden. In this research, the ground water level was decreased to 3 m from the original level and the ground settlement was recorded to reach 25 mm, while the inner tunnel vertical convergence was 6.5 mm after the drainage of 3.5 l/s ground water from the tunnel. Subsequent field measurements and observations indicated that the ground water drainage in the tunnel was reduced to 0–0.5 l/s and the surface settlements were stopped after the chemical injection. 相似文献
20.
某楼房地基下沉的压力注浆加固 总被引:1,自引:1,他引:0
通过某单位住宅楼在新建后的第二年就出现地基、基础下沉、上部结构裂缝而采用水泥、水玻璃压力注浆对地基土进行补强。其中谈到了水泥浆液的配制方法,塑料管加工以及封孔时的技术要求。对施工工艺也做了详细的阐述。对加固的效果进行了介绍,效果明显。 相似文献