Horizontal jet grouting pore-forming water drainage method for completely weathered deeply buried water-rich granite of tunnels
A technology of horizontal rotary jetting and water granite, used in drainage, earthwork drilling, safety devices, etc., can solve the problems of poor curtain grouting proof effect, low permeability coefficient of fully weathered granite, etc., to achieve good drainage effect and water output. Continuous and stable effect with simple structure
Inactive Publication Date: 2012-06-13
CHINA RAILWAY 12TH BUREAU GRP +2
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the extremely small permeability coefficient of the fully weathered granite, the local reinforcement of the weak rock mass has the defect that the curtain grouting proves that the effect is not good.
Method used
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
View moreImage
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
[0015] Accompanying drawing is embodiment of the present invention.
[0016] Below in conjunction with accompanying drawing, content of the invention will be further described:
[0017] refer to Figure 1 to Figure 3 Shown, a kind of tunnel full-weathered deep-buried water-rich granite horizontal swirling hole drainage method, the method is carried out according to the following steps:
[0018] 1) Prepare a group of horizontal jet grouting piles on the fully weathered rock section of the tunnel, and the set of horizontal jet grouting piles is composed of interlocking horizontal jet grouting piles numbered 1-7;
[0019] 2) Drill an inner drain hole 8 in the No. 7 pile at the center of the interlocking horizontal jet grouting pile;
[0020] 3) One end of the drain hole 8 is connected to one end of the orifice pipe 9, the other end of the orifice pipe 9 is connected to the ball valve 10, and the other end of the drain hole 8 is directly inserted into the No. At the end of the ...
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 horizontal jet grouting pore-forming water drainage method for completely weathered deeply buried water-rich granite of tunnels. The method includes steps of manufacturing a group of mutually gripped horizontal jet grouting piles with the number from one to seven on the section of a completely weathered rock stratum of a tunnel; drilling a pile internal water drainage hole in the number seven center pile of the mutually gripped horizontal jet grouting piles; connecting one end of the water drainage hole with one end of a pore tube, connecting the other end of the pore tube with a ball valve, penetrating the other end of the water drainage hole through the center of the jet grouting pile, directly inserting the other end of the water drainage hole into the tail end of the jet grouting pile, and avoiding drilling water drainage holes on reserved a part with the length ranging from 30cm to 50cm at the tail end of the jet grouting pile. The horizontal jet grouting pore-forming water drainage method for completely weathered deeply buried water-rich granite of tunnels has the advantages that the structure is simple, a water drainage effect is good, continuous water drainage in a completely weathered deeply buried water-rich granite body can be realized, water drainage holes which are constructed without adopting the horizontal jet grouting pore-forming water drainage method are collapsed totally so that a water drainage function cannot be realized, the success ratio of the water drainage hole which is constructed by the aid of the horizontal jet grouting pore-forming water drainage method reaches 100%, water outflow of the water drainage hole is continuous and stable, and the horizontal jet grouting pore-forming water drainage method is widely used for railway tunnels and underground engineering.
Description
technical field [0001] The invention relates to a reinforcement treatment project for weak surrounding rocks of tunnels, in particular to a water-discharging method of fully weathered deep-buried water-rich granite in tunnels by horizontal jet spraying. Background technique [0002] The reinforcement treatment of the tunnel's deep-buried water-rich and weak surrounding rock, because the huge water pressure generated by the deep-buried water-rich water will interfere with the construction reinforcement and affect the normal progress of the construction. It is generally required to divide the water and reduce the pressure before reinforcement. The existing method of water diversion and pressure reduction generally adopts directly drilling a drain hole in the rock body of the surrounding rock, and installing an orifice pipe at the orifice to discharge water. However, when drilling drainage holes in fully weathered deep buried water-rich granite rocks, due to the extremely poor ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02
Inventor 林福地
Owner CHINA RAILWAY 12TH BUREAU GRP