Karst tunnel large-scale cavern processing method
A treatment method and large-scale technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of high construction safety and operation safety risks, difficult solution cavity treatment construction, poor treatment effect, etc., and achieve short construction period , short processing time and stable structure
A treatment method and large-scale technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of high construction safety and operation safety risks, difficult solution cavity treatment construction, poor treatment effect, etc., and achieve short construction period , short processing time and stable structure
CN102296961BActive Publication Date: 2013-11-27CHINA RAILWAY 20 BUREAU GRP CORP LTD
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0053] Such as figure 1 A large-scale dissolution cavity treatment method of a karst tunnel is shown. The constructed tunnel 2 needs to process the interior of the large-scale dissolution cavity 3. The front tunnel section 10 on the side, the rear tunnel section 11 located at the rear side of the large-scale dissolution chamber 3, and the cross-dissolution cavity tunnel section 5 across the large-scale dissolution chamber 3, the front tunnel section 10 and the rear tunnel section The upper tunnel sections 11 are connected by crossing the dissolution chamber tunnel section 5, and the roof of the large-scale dissolution chamber 3 is located below the ground surface. And the tunnel section 5 across the dissolution cavity includes the tunnel section one 5-1 connected with the front tunnel section 10, the tunnel section two 5-2 connected with the tunnel section one 5-1, and the front and rear sections according to the layout position. Tunnel section three 5-3 whose ends are connec...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a karst tunnel large-scale cavern processing method. A cavern traversing tunnel section penetrating through a cavern comprises a tunnel section I, a tunnel section II and a tunnel section III according to the distribution positions, wherein two sides of the tunnel section I are suspended in midair and the top of the tunnel section I is at a smaller distance away from a cavern top plate, one side of the tunnel section II is suspended in midair, and two sides of the tunnel section III are suspended in midair and the top of the tunnel section III is at a larger distance away from the cavern top plate. The processing method comprises the steps of: 1, excavating a bypass pilot tunnel; 2, protecting inside of the cavern; 3, processing the bottom of the tunnel: filling the cavern below the tunnel section I with rock residues and grouting for reinforcing, and then distributing an armoured concrete slab girder, filling the cavern below the tunnel section III with concrete and then distributing an armoured concrete slab girder, filling the cavern below the tunnel section II with hard fillers; 4, constructing a gravity retaining wall at the suspending side of the tunnel section II; 5, constructing the tunnel section I with an open cut tunnel process; 6, constructing the tunnel section III with the open cut tunnel process after the bypass pilot tunnel bypasses; and 7, constructing the tunnel section II. The karst tunnel large-scale cavern processing method has the advantages of reasonable design, convenience for construction, safe and reliable construction process and short construction period, good processing effect on the large-scale cavern.
Description
technical field [0001] The invention relates to a method for treating dissolved cavities, in particular to a method for treating large-scale dissolved cavities of karst tunnels. Background technique [0002] The problem of karst is a major problem in tunnel engineering. The impact of karst on tunnel engineering is mainly manifested in deformation and instability around the tunnel, which often leads to local collapse, falling blocks and rockfall during tunnel excavation; It not only affects the construction safety, but also directly endangers the safety of personnel and mechanical equipment. The tunnels built in the west and southwest of my country often encounter karst problems. Karst areas are generally characterized by undulating topography, and water basins are easy to form in low-lying places. The long-term dissolution and erosion of surface water forms karst depressions or valleys of various shapes. The repeated circulation of surface water and groundwater forms karst p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
27 Nov 2013
Publication
CN102296961B
- IPC
- E21D9/00; E21D11/00; E21D11/10
- Inventors
- 薛俊峰; 王作举