CN211898465U - Gas formation high embankment landslide treatment system - Google Patents

Abstract

The utility model relates to a gas formation high embankment landslide control system, which comprises a high embankment, double-row piles, single-row piles, an upward inclined drain pipe, a deep displacement monitoring pipe and a ground surface monitoring pile; double rows of piles are arranged on the deep section of the sliding surface of the high embankment, single rows of piles are arranged on the shallow section of the sliding surface of the high embankment, and the double rows of piles are formed by connecting front rows of piles and rear rows of piles into a whole through connecting beams; an upward and oblique drain pipe is arranged in the high embankment; the surface of the high embankment is provided with ground surface monitoring piles, and a deep displacement monitoring pipe is arranged inside the high embankment; embedding a monitoring element in the pile hole; the high embankment is provided with a drainage ditch. The utility model has the advantages that: the utility model discloses a single, double row pile makes up mutually, undertakes main gliding force to combine drainage system to make high embankment (the gliding mass) be in stable state, perfect monitoring system makes when high embankment (the gliding mass) appears warping, but in time pinpoint the problem, can trail the atress mechanism and the deformation law of row pile system and single pile through pre-buried monitoring element.

Description

Gas formation high embankment landslide treatment system

Technical Field

The utility model belongs to the technical field of unfavorable geology retaining system, concretely relates to high embankment landslide treatment system in gas formation.

Background

In the treatment of large landslides of a plurality of complex gas formations, the single-row anti-slide pile cannot meet the requirement of gliding thrust due to the limitation of the gliding thrust and the setting conditions of the pile body. The multiple rows of anti-slide piles are respectively arranged in the landslide bodies at different positions, and great difficulty is brought to the management of the landslide dike due to factors such as topographic conditions, large land acquisition difficulty and the like. And the single-row and double-row combined row anti-slide piles are adopted for treatment, so that the problems of plane arrangement and land acquisition can be solved, and the anti-slide capability can be improved. Compared with a single supporting mode, the single-row and double-row combined slide-resistant pile has the advantages of good overall stability, high rigidity, convenience in construction and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough among the prior art, provide a gas formation high embankment landslide treatment system.

The gas formation high embankment landslide treatment system comprises a high embankment, double rows of piles, single rows of piles, an upward and oblique drain pipe, a deep displacement monitoring pipe and a ground surface monitoring pile; double rows of piles are arranged on the deep section of the sliding surface of the high embankment, single rows of piles are arranged on the shallow section of the sliding surface of the high embankment, and the double rows of piles are formed by connecting front rows of piles and rear rows of piles into a whole through connecting beams; an upward and oblique drain pipe is arranged in the high embankment; the surface of the high embankment is provided with ground surface monitoring piles, and a deep displacement monitoring pipe is arranged inside the high embankment; embedding a monitoring element in the pile hole; the high embankment is provided with a drainage ditch.

Preferably, the method comprises the following steps: and backfilling and compacting the pile tops of the embedded double-row piles, and performing back pressure on the pile tops of the exposed single-row piles.

Preferably, the method comprises the following steps: the oblique drain pipe extends below the sliding surface, and is connected to the drainage catch drain.

Preferably, the method comprises the following steps: the single row of piles is provided with a retaining wall and an inner support.

Preferably, the method comprises the following steps: the rear row of piles is longer than the front row of piles, and the rear row of piles is arranged close to the high embankment.

Preferably, the method comprises the following steps: an inclinometry system is arranged in the high embankment and comprises a deep displacement inclinometry instrument system, an inclinometry guide pipe and a guide wire.

The utility model has the advantages that: the utility model discloses a single, double row pile makes up mutually, undertakes main gliding force to combine drainage system to make high embankment (the gliding mass) be in stable state, perfect monitoring system makes when high embankment (the gliding mass) appears warping, but in time pinpoint the problem, can trail the atress mechanism and the deformation law of row pile system and single pile through pre-buried monitoring element. The system can greatly improve the anti-sliding capacity, effectively limit the deformation and displacement of the sliding body, and ensure the reliable quality of the dug pile and convenient embedding of the side monitoring element.

Drawings

Fig. 1 is a schematic plan view of the present invention;

fig. 2 is a typical cross-sectional view of the present invention;

fig. 3 is a schematic view of a double row pile structure of the present invention;

fig. 4 is a schematic view of a monitoring element embedded in a pile hole according to the present invention;

fig. 5 is a schematic diagram of a main sample of the inclinometer system of the present invention.

Description of reference numerals: 1. high embankments (sliders); 2. a road bed; 3. filling a side slope; 4. a toe wall; 5. back row piles; 6. a tie-beam; 7. front row piles; 8. backfilling the top; 9. an original ground line; 10. single row of piles; 11. a sliding surface; 12. pulling cracks on the rear edge of the landslide; 13. a drainage ditch; 14. an upward and oblique drain pipe; 15. a thrust direction; 16. a landslide front edge shear outlet; 17. backfilling the pile top; 18. a deep displacement monitoring tube; 19. monitoring the pile on the ground surface; 20. a soil pressure cell; 21. a wire; 22. a deep displacement inclinometer system; 23. an inclinometer catheter; 24. the leading edge is raised.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

And (3) carrying out basic work such as monitoring and surveying after the high embankment (sliding body) deforms, and calculating the gliding thrust according to basic data and experience. The high embankment (sliding body) adopts a single-row and double-row pile combination scheme according to a calculation result, monitoring elements are buried in pile bodies, temporary unloading and unloading are carried out on a roadbed and an upper embankment, and an upward inclined water drainage pipe is arranged on the high embankment (sliding body) and connected to a drainage intercepting ditch. The cracks that the high embankment (slide) has found are sealed off and the inspection is enhanced.

The gas formation high embankment landslide treatment system comprises a high embankment 1, double rows of piles, single rows of piles 10, an upward inclined drainage pipe 14, a deep displacement monitoring pipe 18 and a ground surface monitoring pile 19. The high embankment (landslide) fills soft rock soil bodies with a coal bed under the high embankment (landslide), the original ground of the high embankment (landslide) is provided with about 25 percent of cross slopes, the ground surface is filled with 4-5m thick ploughed and planted soil, the ground water level is high, the high-intensity continuous heavy rainfall exists, the regional ground water level is exposed, the surface of the high embankment (landslide) runs off all year round, the landform and the topography are strongly influenced by artificial activities, the filling material at the bottom of the high embankment (landslide) is strong-full rock, the water permeability is poor, the upper part of the high embankment is excavated hard rock, the high embankment meets the standard requirements, the high embankment (landslide) has obvious horizontal displacement in the rainy period, the front edge of the landslide is raised in a wavy shape, the front edge of the landslide has obvious shear outlets, the rear edge of the landslide has obvious tensile cracks, the top of a roadbed 2 which is filled with a plurality of longitudinal through cracks, the fill side slopes, and (3) continuously developing deformation, monitoring the deformation period of the high embankment (slide body), finding out the position of the slide surface 11, verifying the position with a drill hole, verifying the physical parameters (taking residual shear strength value) of the test slide surface and performing back calculation verification, and calculating the sliding force and taking adverse conditions. The deep section (most unfavorable) of the slip surface 11 of the high embankment 1 is provided with double rows of piles, the shallow section is provided with a single row of piles 10, the double rows of piles are connected into a whole by a front row of piles 7 and a rear row of piles 5 through a connecting beam 6, and the long piles and the short piles are combined; an upward and oblique drain pipe 14 is arranged in the high embankment (sliding body); after a landslide occurs, arranging ground surface monitoring piles 19 on the surface of the high embankment 1 (small piles, namely ground surface monitoring piles, are buried deeply at ground surface monitoring points, and the change of the ground can be obtained by monitoring the position and elevation of the top of the small piles for a long time), and arranging a deep displacement monitoring pipe 18 inside the high embankment 1; monitoring elements such as a soil pressure box 20 and a strain sensor are embedded in the pile hole, long-term monitoring is carried out, and the stress mechanism and the deformation rule are tracked; the front edge and the rear edge of the landslide are phenomena generated after the original ground line is deformed; the high embankment 1 is provided with a drainage ditch (one drainage ditch is positioned on the outer side of the toe wall 4).

The high embankment 1 is provided with double rows of piles in a typical section (the most unfavorable), the embedded double rows of piles are adopted in consideration of the deeper sliding surface (11), the pile tops in the later period are backfilled and compacted, exposed single rows of piles are adopted in the section favorably, the pile tops in the later period are back-pressed, and the top surface is parallel to the ground surface and then is greened.

The inclined water discharge pipe 14 extends below the sliding surface 11, discharges underground water and is connected to the water discharge intercepting ditch, so that the parameters of the sliding body are improved, and the slope footwall is prevented from water seepage and softening. More specifically, the oblique drainage pipe 14 extends to a certain depth of the slide bed, inclines to one side of the landslide direction, is provided with a water inlet hole, is wrapped with geotextile, and extends to the outside of the high embankment (slide body).

The road bed 2 is unloaded temporarily, the temporary support is arranged in the excavation hole, the coal gas content in the hole is detected through construction, the excavation is carried out in the case of hard rock cold, smoke and fire are forbidden, and underground water is drained.

The single-row piles 10 are large in size, convenient to construct and provided with retaining walls and inner supports; the double-row pile comprises a front row pile 7, a connecting beam 6 and a rear row pile 5, can bear larger gliding thrust, can be constructed simultaneously with an adjacent single row pile 7 (for ensuring the safety of pore-forming during construction, a safety distance is required to be reserved, namely, the front row pile is far away from the adjacent single row pile and can be constructed simultaneously), so that the construction progress is accelerated, the cost is saved by combining long piles and short piles, and the double-row pile is safe and reliable. The double-row piles and the single-row piles form a supporting and retaining system. And adding an accelerator into the pile body concrete.

According to the terrain and the depth of the sliding surface, the pile top is exposed and reversely pressed and is buried into the pile top for backfilling, and the construction is convenient and the cost is saved by utilizing the abandoned square to green the environment.

An inclinometry system is arranged in the high embankment (sliding body), and the inclinometry system comprises a deep displacement inclinometry instrument system 22, an inclinometry guide pipe 23 and a lead 21, as shown in fig. 5.

Claims (6)

1. A gas formation high embankment landslide treatment system is characterized by comprising a high embankment (1), double rows of piles, single rows of piles (10), an upward and oblique drain pipe (14), a deep displacement monitoring pipe (18) and a ground surface monitoring pile (19); double rows of piles are arranged on the deep section of the sliding surface (11) of the high embankment (1), single rows of piles (10) are arranged on the shallow section of the sliding surface (11) of the high embankment (1), and the double rows of piles are connected into a whole by a front row of piles (7) and a rear row of piles (5) through a connecting beam (6); an upward and oblique drain pipe (14) is arranged in the high embankment (1); the surface of the high embankment (1) is provided with ground surface monitoring piles (19), and a deep displacement monitoring pipe (18) is arranged in the high embankment (1); embedding a monitoring element in the pile hole; the high embankment (1) is provided with a drainage ditch.

2. The gas formation high embankment landslide remediation system of claim 1 wherein the top of the submerged double row piles are backfilled and compacted and the top of the exposed single row piles (10) are back pressed.

3. The gas formation high embankment landslide abatement system of claim 1, wherein the elevation drain pipe (14) extends below the skid surface (11) and the elevation drain pipe (14) is connected to a drain catch basin.

4. The gas formation high embankment landslide remediation system of claim 1 wherein a single row of piles (10) provides the retaining wall and the inner support.

5. The gas formation high embankment landslide treatment system according to claim 1, wherein the rear row of piles (5) is longer than the front row of piles (7), the rear row of piles (5) being arranged close to the high embankment (1).

6. The gas formation high embankment landslide treatment system according to claim 1, wherein a slope measurement system is deployed in the high embankment (1), the slope measurement system comprising a deep displacement slope measurement instrument system (22), a slope measurement conduit (23) and a wire (21).

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