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1、ocusing on ways and means of improving and upgrading work, further development of “three to split“. (A) fully grasp “no unauthorised“ created. The township “no unauthorised“ created the existing building “one household, one document“ survey and file storage work must be unconditional and full covera
2、ge. Main corridor leading to the town (road, river) village, the Central built-up area of the town on both sides must be to create a “no unauthorised village“. According to “five hundred villages“ created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading c
3、reates files, the real “no unauthorised village“ created into the benefit of the people of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the “new“ control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A stri
4、ct new unauthorised network responsibility. Sectors such as land, housing and basic stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspection
5、s, suppression, demolition work to ensure that the new “zero tolerance“. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulati
6、ons, effective fulfilment of responsibilities, particularly in electricity and water supply, and other units may not be new illegal buildings to supply water and electricity supply. While more regulation to prevent personal privacy violations. Illicit trading in illegal construction in the Ministry
7、of public security sector to strictly from the blow. Three is to create additional offence reporting system of incentives. According to building law and covers an area of nature, to report timely degree divided report grade, effective after the removal of certain incentives. (C) integrated implement
8、ation “, building demolition, modification, use“ combination. Demolition is the means and purpose built is. To adhere to the building demolished, combination of construction and demolition waste, demolished with combined efforts to improve the scientific level of three to split; second, we must pay
9、attention to “three to split“ and “five hundred“ and “five water treatment“, “three of the four sides“, the shackDistrict transformation, and dangerous old room transformation and “two road sides“, series work organic combined up, active do River, and along demolition work, and manpower advance vill
10、age in the, and old residential demolition work, to improved masses housing conditions and live environment; three to put “three modified a split“ as traditional low, and small, and bulk industry structure transformation upgrade of important initiatives to caught, speed up advance industry Park, eff
11、ective optimization park environment and improve idle land of utilization, real achieved environment improved and productivity development mutual promoting total win. Five, firmly implement, promoting work ahead, to create highlights. Third deployment, implementation of seven, then it is imperative
12、to strengthen responsibility and improve the mechanisms and implementation. All localities and departments must be convinced that goals, going all out, mustering spirit, work together to ensure that this years objectives carry out tasks, at the forefront. First, we must strengthen the leadership to
13、implement. Departments at all levels should always work and rural “five water treatment“, “three to split“ in an important position, and carry the main responsibility, main leader personally, leaders arrested and layers of responsibility rank transmission pressure established hierarchical accountabi
14、lity, and work together to promote the work of the mechanism, a concerted effort pay attention to implementation. County nongban, flood, three to one down to further play a leading catch total, integrated and coordinated role of all kinds is “long“, “Sheriff“ “Inspector“ to effectively fulfill their
15、 responsibilities, formed the alignment on the fire line and management a lively situation. Second, we must strengthen the test implementation of the Governor. Role play the Governor got the baton, for agricultural and rural focus and “five water treatment“, “three to split“ work, refine improve ass
16、essment methods and evaluation system, accurate assessment. Combined with “dare play, tree benchmark“ style building five major operations, carry on and gain firsthand experience of supervision, in particular, to strengthen the focus on the “long“ signs “go left“, “names“ such as supervision, urged
17、all levels longer on duty in place. Through the supervisory assessment, to promote habits, stimulating power. Third, we must strengthen implementation style. Departments at all levels to work in rural areas and “five water treatment“, “three to split“ as training cadres for major platforms, compete
18、against large examination room, inspection cadres work performance of the ring, water control and the Japanese pulled a workout, training, discovery and selection of cadres. Than good catch up, first to excellence-oriented. Party members and cadres at all levels must adhere to the rural, water contr
19、ol and the Japanese pulled a grass-roots, “put down the shelf, leaned“ pragmatic style, the spirit of play, become a benchmark model. Four, we must strengthen propaganda implementation. Comprehensive utilization of micro-credit, micro-blogging, new media, mining, summarizing, good publicity work in
20、the countryside and “five water treatment“, “three to split“ advanced models, point to gather positive energy for the community to see the results of our work in time, increase public awareness, participation rates, satisfaction and support. Play gongqingfu, a mass organization and grass-roots such
21、as schools, communityThe role of 隧道基底类病害整治施工技术方案总结隧道基底类病害整治施工技术方案总结 1 引言引言 隧道基底类病害按其所属线路的性质一般可分为既有线隧道基底病害和新 建线隧道基底病害。 既有线铁路隧道的基床病害主要指由于隧道基底病害和渗漏水等引起的道 床下沉、开裂、翻浆冒泥等现象。基床病害容易导致线路几何状态难以保持, 制约列车提速,危及行车安全,严重时甚至会造成列车在隧道内脱轨倾覆。 新建线隧道基底病害则一般是指由于隧底存在软弱地层(淤泥层、粘土层、 湿陷性黄土)等不良地质,造成隧底沉降超限而形成的病害,整治措施一般包 括基底换填、小导管注浆
22、和旋喷桩加固等。 多年来,北京中铁瑞威基础工程有限公司一直与北方交大隧道中心及各铁 路局在路内联合开展各类隧道病害整治工作,致力于深入研究分析病害成因、 优选整治方案、合理引用国外和自行研发新材料等方面的工作,成功完成了一 批铁路隧道的病害整治项目,取得了满意的施工效果,得到了用户和管理部门 的好评。 2 既有线隧道基底病害整治施工技术方案既有线隧道基底病害整治施工技术方案 2.1 既有线隧道基底病害的主要成因既有线隧道基底病害的主要成因 基床病害的成因主要包括:当基底为软弱层(如风化的基岩、断层破碎带、 超挖部分为浮碴填充层)时,由于其强度低、结构松散,容易被水浸泡软化或 被水冲刷流失,列车
23、动载的反复作用使基底泥水多沿边墙缝、人行道与道床的 接缝或其它薄弱环节(如中心及侧水沟)等处涌向道床,形成翻浆冒泥,进而 使基底局部淘空,造成道床断裂。另外,还有软岩膨胀底鼓等原因。 2.2 病害检测病害检测 在进行病害整治前,首先采取物探与现场原状土取样化验相结合的方法, 确定病害成因,确定病害规模与分布范围。即采用地质雷达、电法等物探手段, 查明基床的充泥充水、空穴等状况,再采用原状土取样化验查明填料的种类及 孔隙率以及是否铺设垫层,为制定整治方案提供依据。这样做会使整治方案更 具有针对性,从而有效保障整治效果。 2.3 病害整治方案病害整治方案 ocusing on ways and m
24、eans of improving and upgrading work, further development of “three to split“. (A) fully grasp “no unauthorised“ created. The township “no unauthorised“ created the existing building “one household, one document“ survey and file storage work must be unconditional and full coverage. Main corridor lea
25、ding to the town (road, river) village, the Central built-up area of the town on both sides must be to create a “no unauthorised village“. According to “five hundred villages“ created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading creates files, the rea
26、l “no unauthorised village“ created into the benefit of the people of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the “new“ control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A strict new unauthorised n
27、etwork responsibility. Sectors such as land, housing and basic stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspections, suppression, demol
28、ition work to ensure that the new “zero tolerance“. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulations, effective fulfil
29、ment of responsibilities, particularly in electricity and water supply, and other units may not be new illegal buildings to supply water and electricity supply. While more regulation to prevent personal privacy violations. Illicit trading in illegal construction in the Ministry of public security se
30、ctor to strictly from the blow. Three is to create additional offence reporting system of incentives. According to building law and covers an area of nature, to report timely degree divided report grade, effective after the removal of certain incentives. (C) integrated implementation “, building dem
31、olition, modification, use“ combination. Demolition is the means and purpose built is. To adhere to the building demolished, combination of construction and demolition waste, demolished with combined efforts to improve the scientific level of three to split; second, we must pay attention to “three t
32、o split“ and “five hundred“ and “five water treatment“, “three of the four sides“, the shackDistrict transformation, and dangerous old room transformation and “two road sides“, series work organic combined up, active do River, and along demolition work, and manpower advance village in the, and old r
33、esidential demolition work, to improved masses housing conditions and live environment; three to put “three modified a split“ as traditional low, and small, and bulk industry structure transformation upgrade of important initiatives to caught, speed up advance industry Park, effective optimization p
34、ark environment and improve idle land of utilization, real achieved environment improved and productivity development mutual promoting total win. Five, firmly implement, promoting work ahead, to create highlights. Third deployment, implementation of seven, then it is imperative to strengthen respons
35、ibility and improve the mechanisms and implementation. All localities and departments must be convinced that goals, going all out, mustering spirit, work together to ensure that this years objectives carry out tasks, at the forefront. First, we must strengthen the leadership to implement. Department
36、s at all levels should always work and rural “five water treatment“, “three to split“ in an important position, and carry the main responsibility, main leader personally, leaders arrested and layers of responsibility rank transmission pressure established hierarchical accountability, and work togeth
37、er to promote the work of the mechanism, a concerted effort pay attention to implementation. County nongban, flood, three to one down to further play a leading catch total, integrated and coordinated role of all kinds is “long“, “Sheriff“ “Inspector“ to effectively fulfill their responsibilities, fo
38、rmed the alignment on the fire line and management a lively situation. Second, we must strengthen the test implementation of the Governor. Role play the Governor got the baton, for agricultural and rural focus and “five water treatment“, “three to split“ work, refine improve assessment methods and e
39、valuation system, accurate assessment. Combined with “dare play, tree benchmark“ style building five major operations, carry on and gain firsthand experience of supervision, in particular, to strengthen the focus on the “long“ signs “go left“, “names“ such as supervision, urged all levels longer on
40、duty in place. Through the supervisory assessment, to promote habits, stimulating power. Third, we must strengthen implementation style. Departments at all levels to work in rural areas and “five water treatment“, “three to split“ as training cadres for major platforms, compete against large examina
41、tion room, inspection cadres work performance of the ring, water control and the Japanese pulled a workout, training, discovery and selection of cadres. Than good catch up, first to excellence-oriented. Party members and cadres at all levels must adhere to the rural, water control and the Japanese p
42、ulled a grass-roots, “put down the shelf, leaned“ pragmatic style, the spirit of play, become a benchmark model. Four, we must strengthen propaganda implementation. Comprehensive utilization of micro-credit, micro-blogging, new media, mining, summarizing, good publicity work in the countryside and “
43、five water treatment“, “three to split“ advanced models, point to gather positive energy for the community to see the results of our work in time, increase public awareness, participation rates, satisfaction and support. Play gongqingfu, a mass organization and grass-roots such as schools, community
44、The role of 通常,隧道基底和道床的病害整治可视病害程度和具体情况采用加设有效 的地下水排导系统、道床翻修、换填、置换、道床基底注浆等措施。中铁瑞威 公司针对此类病害采取的整治方法主要有以下两种:1、锚桩+注浆加固法,主 要针对病害较为严重的路段;2、T 浆液+化学浆的组合注浆法,一般针对病害 相对较轻的路段。 2.3.1 锚桩锚桩+注浆加固法(以大瑶山隧道病害整治项目为例)注浆加固法(以大瑶山隧道病害整治项目为例) 这是一种采用聚合物砼灌注锚桩加固和封闭水沟墙及与基底灌浆相结合的 方法,使断裂和“吊空”被锚固、充填,通过沟墙封闭将灌浆区段与水隔绝, 确保灌浆质量,然后在封闭的灌浆区
45、段进行基底灌浆,从而达到基底完全固结 填实的目的。 图 1 锚桩平面布置示意图 图 2 锚固桩立面布置示意图 图 3 道床基底注浆示意图 2.3.1.1 锚桩设计 桩径 d:取决于钻机成孔直径,一般取 d=120150mm; 桩长 L:L=道床厚度+铺底厚度+嵌岩深度(0.25m) ; 桩间距 a:按承载力计算结果,同时满足 a3d,并采用错位梅花排列; PMC 聚合物混凝土:灌桩材料性能具有在 1m/s 的涌水冲刷下不离散、 ocusing on ways and means of improving and upgrading work, further development of “t
46、hree to split“. (A) fully grasp “no unauthorised“ created. The township “no unauthorised“ created the existing building “one household, one document“ survey and file storage work must be unconditional and full coverage. Main corridor leading to the town (road, river) village, the Central built-up ar
47、ea of the town on both sides must be to create a “no unauthorised village“. According to “five hundred villages“ created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading creates files, the real “no unauthorised village“ created into the benefit of the peo
48、ple of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the “new“ control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A strict new unauthorised network responsibility. Sectors such as land, housing and basic
49、stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspections, suppression, demolition work to ensure that the new “zero tolerance“. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulations, effective fulfilment of responsibiliti
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