Yiwan Railroad Dazhiping Tunnel Karst Geology Disaster Integrated Control Technology

Water dashes forward in karst area dashing forward hitting the target the process building tunneling , being under construction the mud already becomes one of the gravest engineering geology disaster. The tunnel cuts through a place contain water dashes forward in large scale suddenly mud karst cave or underground river, ascertain or punish measure block of wood reasonableness once the middle being under construction has not outstriped, not only endangering tunnel construction safety , the rate of progress affecting tunnel construction, may establish the day afer tomorrow in the tunnel bringing about grave being in motion and doing business water evil and the earth's surface environment worsen , bring about heavy losses for people's turn out , life. Be that the tunnel taking precautions against karst is significant dash forward water dashes forward the mud occurrence, need the integrated control technology.Thesis the high-handed rich water structure studying how the summary keeps watch karst in construction lying concealed dashes forward water dashes forward mud geology disaster and be in motion and do business forever structure water proofing harms safety. Be a project's turn to take that have most representative and typical one of big of complicated karst of Yiwan railroad eight Is level suitable tunnel props up the level ground tunnel as basis mainly, whose technology principle is to adopt synthetical advance geology to forecast the forecasting technology before karst tunnel working face is excavated, accurate ascertain that front karst dashes forward water the mud is suddenly structural , lie concealed according to karst structure form and scale, safe construction schemes such as choosing slip casting , circuitous passing round , excreting decompression, and building-up is perfect take precautions against natural calamities early warning, and rescue system. Include main five the following key technologies content concretely:(1) karst dashes forward water dashes forward mud lie concealed synthetical advance of structure geology sounds a technology accuratelyBe a technology's turn to be used to ascertain that water dashes forward suddenly in the tunnel excavation front accurately mud karst lie concealed the structure form and scale, judge Buddhism causing disaster type, accurate degree appraising an impact of disaster over construction. Bring a thing into play first working face geology inquires into the portent reaching pencil sketching , judging that karst causes disaster within the earth's surface and the hole; Two is sufficiently fishing for the instrument effect , pass a thing explore have data all over the hands determining the nature in hand; Three are that to make use of penetrating physics means such as strong point , middle , short distance level borehole and extra-long cannon hole , pour to karst location, the water yield , water pressure , karst quantify such as filler character and scale sound; Four are that geology forecasts forecasting note geology risk classification administration. Four person forms the accurate probing commonly , the escapism sends out strong advantageous nature geology disaster technology means suddenly.(2) tunnel surronding rocks annotate thick fluid strengthening and mssingle of water technology in advanceThe water easy to happen dashing forward being used to already have ascertained that dashes forward the mud dissolves the cavity slip casting consolidates mssingle of water construction. Technology principle: And that the tunnel surronding rock pours the thick fluid technology in advance is to make use of supporting machinery equipment , adopt the rational slip casting handicraft, material pours proper slip casting into the project marriage partner, to reach a filling , to consolidate , stop up water , lifting, correct an error waiting for purpose.High-handed rich mud water dissolves suddenly to water easy to significant geology disaster's happened dashing forward the cavity, adopt 3 ~ 8 form line outside ms entire section drapery slip casting to consolidate a scheme. The crack pours to the sort water , scale the karst that the cavity waits for to be able to not bring about the damage being under construction to the project is structural than dissolving for a short time , is that slip casting or working reveals the queen radial direction slip casting mssingle of water scheme adopt part. The water that technology is already applied to karst tunnel quilt broad ripely defending against dashing forward dashes forward the mud dissolves on the cavity governing, this achievement rapid and intense be tied in wedlock scene is actual, summary and distillation being that a slip casting technology is systematic.(3) heavy section dashes forward water the mud dissolves suddenly circuitous passing round of cavity technologyThe water the more isolated , forward winding being used to already have ascertained that being made a detour but dodging to dash forward dashes forward the mud dissolves the cavity , the weaker zone making use of karst to develop, avail self of every opportunity , interpose to outflank leading pit passing round passing.Big branch level grounds come across 5 places of high-handed large-scale rich water in tunnel construction dashing forward water the mud dissolves suddenly cavity, the facade breaks not only degree of difficulty is big , risk is high , but also the strong point handling a time limit for a project , Shi not satisfying hand-to-hand fight in tights opening up the long tunnel of face rapidly forward form a scheme. Therefore forecasting advance in synthetical geology sound the scheme that geology has adopt to open the safe fleetness of circuitous passing round of horizontal stroke passage towards the left or towards the right in addition under condition by opening up face forward accurately.(4) high-handed rich water dissolves cavity Buddhism can bring the pressure down technologyBe a technology's turn to be specifically for having stronger waterpower connection with the earth's surface, intense watery and water permeability, water pole Yi is formed dashing forward comparatively in large scale high-handed rich the mud karst water dissolves suddenly cavity, the cavity crisis draining away water propping up the hole , the borehole , rectifying a hole dissolving explodes by interposing permanent the hole draining away water, and the hole draining away water being linked together reveal dissolve the cavity waits for means to reach draining off , arranges a mud , arranges stone purpose. Effective the water ability having resolved the karst tunnel being in motion and doing business setting the line ditch right excreting karst pouring be not worth being in motion and doing business, water makes permanent safe hidden trouble , high-handed rich cement stone fill dissolving the cavity dashes forward water suddenly, the mud , the reason resist water pressure shoring structure resistance outside load cost comparatively by force highly , the degree of difficulty being under construction waits for the technology difficult problem greatly. Effective avoid significant water dashes forward suddenly mud geology disaster occurrence, have realized the karst tunnel "discharging combining with limiting the quantity mssingle row,the comprehensive treatment " purpose.(5) karst tunnels take precautions against natural calamities early warning, and rescue a technologyComplicated karst tunnel system takes precautions against natural calamities early warning reaches the safety rescuing a technology being that water dashes forward when the mud waits to dash forward sending out the nature geology disaster , the scene personnel can think that the tunnel happens dashing forward dodging rapidly , withdraws from to be free from hurting sum facilities averting destructive safe emergency guarantee system. Technology principle: The karst tunnel responds to a characteristic combining with the risk source and risk, one being to build safe risk tunnel grade administrative system. According to forecasting , rainfalls , water yield , water pressure managing pertinent geology with tunnel risk grade, observation and the surronding rock monitor measuration system , work out risk tunnel safety entering hole construction condition; Two is a karst tunnel every school assignment interposes reliable taking precautions against natural calamities giving an alarm , meets the emergency illuminating and flees for one's life rescuing system; Three are to perfect the system educating training and taking precautions against natural calamities at the regular intervals fleeing for one's life drilling with the safe safety in connection with one calorie of register , morning roll call passing in and out of hole one people. All above triple has ensured machine-made effective high risk tunnel quick response emergency operation. That karst tunnel construction safety takes precautions against natural calamities getting the systematic summary in early warning, and rescuing a technology to be under construction first in ten thousand high railroad risk suitable karst tunnel and applies, is that risk prevents significant personnel casualties and property loss from building a at last pass that firm safety takes precautions against in tunnel geology disaster.Suddenly, the mud geology disaster takes precautions against and punishes the water all above five key technologies have been composed having the systematicness , comprehensiveness , stronger karst of pragmatism tunnel dashing forward to synthesize the technological innovation being under construction.