1、中導洞開挖施工組織設計The design of the excavation construction of the middle guide holeOne, engineering situation:The tunnel is designed as a double arch tunnel, with an import mileage of K73 + 157, and the export range is K73 + 620, the tunnel is 463m, and the line is 2.5%.The rock of the tunnel excavation a

2、rea is of a thousand laminar rock, the soft rock of the silvery sand, the structure of the rock is loose and weather-full weathering In the excavation area, the development of tectonic development, the visual fracture zone is more than 6.The tunnel seepage water is the fourth system of pore water, t

3、he tectonic belt fissures water is the main, encounter the rain weather, the tunnel surge of water has multiplied the growthThe main project of the excavation: 12000m3 of the excavator, the C25 concrete 810 m3, the steel arch support 246TSecond, mechanical equipment and personnel arrangementThe mach

4、inery and equipment required for the excavation of the central cave shall be submitted for inspection.staffingPersormel categoryNumber of peopleTunnel teamManagement personnel6Technical personnel8Construction personnel88Tunnel threeManagement personnel5Technical personnel6Construction personnel3, co

5、nstruction plan arrangementIn otdeT to speed up the tunnel construction progress, arrangement of tunnel, tunnel three teams respectively from the import, export and excavation steps, the specific schedule as follows: arrangeFourth, main construction methodIn advancing drift is must process of multi-

6、arch tunnel, through the pilot tunnel construction, and further proved the geological and hydrological conditions of tunnel excavation area, for the tunnel is a reliable basis for the determination of construction scheme of the caveAccording to the development and structure of surrounding rock, the

7、excavation of the tunnel construction to take two steps, tunneling construction take short footage, weak blasting, backhoe excavator ballast raking, loader back the slagging, dump trucks to abandon dross field method The temporary support of the middle guide is the anchor, the spray, the net, the gr

8、ille steel frame joint support and the advance support measure, the concrete construction method is:(1) digging in the middle of a tunnel;(1) the heading:Take two steps to dig and go up the steps 3-5m According to the condition of the surrounding rock, each cycle is 1.0一2.0 ni. Blasting for micromil

9、lisecond bursts, minimizing disturbance to surrounding rocks;(2) the ballast raking:On the upper step, the backhoe can be pulled down to the next step, and with the lower step, it will be pulled out of the hole(3) ballastor transportationTake the loading machine and return the load, and unload the c

10、ar to the non-rail transportationThe middle guide hole support:Because the rock of the tunnel is broken and badly weathered, the construction safety should be closed after excavation, and the concrete measures are:(1) anchor: use phi 22 mortar anchor rod, anchor rod single length 3m, spacing 1 by lm

11、, plum design, anchor rod with full length anchor, anchor rod resistance not less than 3. 0 T(2) steel mesh: using phi 8 steel mesh, mesh spacing 20 by 20cm, the steel mesh is laid by the excavation surface, and welded to the anchor shaft(3) grille steel frame: I type of rock steel frame 1, 1/0.8 m,

12、 II class 1/1. 0 m, class III type 1/1. 2 m, and no superexcavation in the grating, and the position of artificial excavation should be taken. The grille main bar is welded to the anchor shaft. The grid longitudinal join is paired with phi 22, the ring spacing 1 root / 1. 0 m.(4) advanced anchor: us

13、ing 22 reinforced, extrapolation Angle of 3-5 , spacing between 30 cm, joint length 3. 5 m, the tail and steel welding, the average every 2 m, each ring 20 root;(5) concrete: the concrete thickness of the concrete is 15cm thick, and the concrete is applied to the concrete5, quality assurance measure

14、s:All construction materials are to be inspected before use, and unqualified materials are prohibited for construction.The construction process adhere to the ，zthree inspection system and inspect the quality control system qualified by the supervision;3. In every 10 m hole set up a set of observatio

15、n point, regular observation of surrounding rock, vault subsidence, horizontal convergence, and the measurement results timely feedback to the construction and technical personnel to the size of pilot tunnel support parameter, adjust;Observe the changes of the surrounding rock, and adjust the suppor

16、t!ng parameters of the tunnel in timeSafety assuranee measures:The project department and the construction team shall set up a full-time security officer and a part-time security officer Safety management personnel will be able to make changes to the safety problems in the construction, and they wil

17、l be able to make the decision to rectify and halt the operation.2, establish and improve the various security measures, specification for each construction process of operational procedures, special type of work do written security clarificaiton, special process of constructionStrengthen pre-job tr

18、aining and enhance the safety and protective skills of construction personne1.Strengthen safety publicity education and enhance safetyawareness of construction personnel.Seventh, civilization construction, strengthen environmental protectionThe construction of civilizationIn the construction site ma

19、nagement, take various measures, according to the objective requirement of the modernization construction organization construction, keep the construction site of good construction environment and construction order The main measures are:Organizational management measuresEstablish and improve manage

20、ment organizations The construction site should be set up to project director for the group leader, production, technology, quality, safety, fire control, security, materials, executive health management personnel for members of the civilized construction management groupImprove the management syste

21、m Including: personal responsibility system, economic responsibility system, examination system, reward and punishment system, conference system and various professional management system;Improve management information:Strengthening education training;We will promote the application of new technolog

22、ies, new technologies, new equipment and modern management methods to improve the degree of mechanizationField management measuresVarious production factors on construction site (mainly the elements of content) of the state, constantly sorting, reorganization, cleaning, clean, and cultivate the staf

23、f，s quality and technology, realize the civilization construction.Reasonable setting. Will be required during the period of the construction site all content on the space reasonable decorate, realize the people and things, people and places, objects and places, objects and things between the best co

24、mbination, make the construction site bringing, standardization,standardization, civilization construction level.Visual manageme nt. Visual management is man aged by the eye, or visible management It is the use of visual image and color is suitable for all kinds of visual perception information to o

25、rganize the production, site construction to improve labor productivity, ensure the engineering quality, reduce the cost of engineering. Visual management is an effective management style that is easy to apply, transparent and convenient for employees to manage, self-control and scientific organizat

26、ionsIts main content and form are as follows:(1) the construction site management system, operating procedures, work standards, construction site management detailed rules for the implementation of bulletin application form of wall newspaper, hangs Taiwan, show clearIn the process of setting up, the

27、 design of the information in clear and standardized visual display is carried out and the reasonable setting is realized.(3) the construction site management job responsible use, according to the sign in order to better carry out the post responsibility system, stimulate the positions of the sense

28、of responsibility, and is conducive to the populace to superviseReasonable use of color, safety color, safety signs, etc In the construction site, and standardize management, which is conducive to the safety of production and staff.The results of the inspection results of the site management are pub

29、lishedConstruction site environment protectionEnvironmental protection is a basic state policy of our country. In the process of construction, take measures, in accordance with national and local laws and regulations and industry, enterprise requirements, take measures to control the construction si

30、te of various kinds of dust, waste water, waste gas, solid waste and noise, vibration, such as environmental pollution and harm, at the same time to prevent soil erosion. Protect and improve the construction environment, ensure people* s health, eliminate external disturbance and ensure smooth opera

31、tionEnvironmental protection measures and specific practices:The responsibility system for environmental protection is implementedStrengthen inspection and monitoringTo protect and improve the construction site environment and conduct comprehensive administrationTo strictly enforce the laws and regu

32、lations of the state, make overall arrangements, and make reasonable arrangements and comprehensive management2.Before construction, environmental protection measures shall be formulated to prevent air pollution, water pollution and noise pollution.The construction wastes shall be taken to the desig

33、nated sites, avoiding blocking and polluting the water source If it cannot be processed or shipped in time, it must be managed to prevent loss.The sewage or waste water produced in the construction shall be centralized and shall not be discharged at wil1.When transporting and storing construction ma

34、terials, measures such as covering and storage shall be taken to prevent leakageWhen the route passes through the irrigation area of the farmland, the necessary temporary measures shall be taken. To ensure that the drainage of farmland is not affected or interrupted, such as the ditches, and the wat

35、er pipesThe land and vegetation outside the scope of the project shall be protected, and shall not be arbitrarily piled up and excavated without the approval of the engineer3, the green work measuresThe trees and flowers near the site are as protected as possibleDuring construction, the maintenance of green areas shall bemaintainedConstruction project education network (www. jianshe. com)Registration call: 010-82326699 free hotline: 4008105999Consulting time: 24 hours a day (Saturday, Sunday and holidays)1