High-stability water exploration and drainage equipment for old kiln area

Abstract

The utility model discloses high-stability water exploration and drainage equipment for old kiln areas, which relates to the technical field of mine hydrogeology and comprises a water exploration and drainage system and an underground drainage system. The water exploration and drainage system comprises a pilot hole and a water exploration and drainage drill hole in the old kiln area body, the hole diameter of the pilot hole is smaller than 91 mm, the hole diameter of the water exploration and drainage drill hole is 91-270 mm, the distance between the water exploration and drainage drill hole and the pilot hole is 5-7 times of the diameter of the water exploration and drainage drill hole, and the pilot hole and the water exploration and drainage drill hole are obtained through construction from a coal seam to the old kiln area body and connected with an underground drainage system in the coal seam. A traditional waterproof sleeve is arranged in the section, outside the range of the old kiln area body, of the pilot hole. Compared with an existing common old kiln area water exploration and drainage system, the outer layer floral tube control valve is used for controlling the floral tube to be changed into a part of the floral tube and a part of the waterproof sleeve, so that the water exploration and drainage amount is controlled, a small pilot hole exists, invalid water exploration and drainage projects are reduced, and the water exploration and drainage efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of mine hydrogeology, in particular to a high-stability water exploration and discharge device for old kiln areas. Background Art

[0002] my country has a long history of coal mining. Before the 1990s, there was no detailed mining geological data for the old kilns formed by large-scale coal mining. In addition, since rock fragmentation easily formed water accumulation areas, water exploration and drainage operations had to be carried out when mining adjacent coal seams.

[0003] The existing water exploration and drainage system in the old kiln area has the following problems:

[0004] (1) Since the scope of water accumulation in the old kiln area is affected by many factors, the boundaries are unclear, the scope of water accumulation varies greatly, and there are many invalid boreholes in the water exploration and drainage system, resulting in low efficiency of water exploration and drainage.

[0005] (2) Due to the poor stability of the old kiln area, the drilling holes for water exploration and drainage are prone to collapse.

[0006] (3) Due to the large cracks in the old kiln area, the traditional water exploration and release system has a large flow rate in the old kiln area, which is prone to safety and stability problems. In addition, the water body carries a large amount of loose objects, which can easily block the water exploration and release system.

[0007] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a high-stability water detection and discharge equipment for the old kiln area is proposed. Utility Model Content

[0008] The purpose of the utility model is to provide a high-stability water detection and discharge device for old kiln areas to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-stability old kiln area water exploration and discharge equipment, including a water exploration and discharge system and an underground drainage system, the water exploration and discharge system including a pilot hole and a water exploration and discharge borehole in the main body of the old kiln area, and the pilot hole has a diameter less than 91 mm, the water exploration and discharge borehole has a diameter of 91 to 270 mm, and is 5 to 7 times the diameter of the water exploration and discharge borehole from the pilot hole, the pilot hole is a waterproof casing in the section outside the main body of the old kiln area, and the section within the main body of the old kiln area is a permeable flower pipe, the underground drainage system is included in the space formed by coal seam excavation, and the inside of the coal seam is sequentially provided with a blowout prevention device, a drainage pipeline, a flow meter and an underground drainage system.

[0010] Preferably, the section of the water exploration and drainage borehole outside the main body of the old kiln area is a waterproof casing, and the section within the main body of the old kiln area is a double-layered flower pipe.

[0011] Preferably, the double-layer floral tube of the water exploration and drainage borehole (4) comprises an inner floral tube, an outer floral tube and gravel filler sandwiched therebetween, and the floral tube density of the inner floral tube is 30% to 50% greater than that of the outer floral tube.

[0012] Preferably, a control valve is provided on the outer surface of the exploration and release water drilling hole, and the pilot hole and the front end of the exploration and release water drilling hole are arranged inside the blowout prevention device.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is simple and easy to implement without a large number of auxiliary water exploration and release devices and large-scale supporting projects;

[0015] 2. The utility model reduces ineffective water exploration and release engineering by means of the existence of a small pilot hole, and the water exploration and release efficiency is higher;

[0016] 3. The utility model reduces the hole collapse by arranging multiple layers of flower tubes in the water exploration and discharge holes;

[0017] 4. The utility model can adjust the water flow area through the flower tube in the water exploration and release drilling hole, which can effectively control the exploration and release water volume and avoid safety problems such as water inrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the water exploration and release drilling structure of the utility model.

[0020] In the figure: 1. Coal seam; 101. Exploration and drainage system; 2. Main body of the old kiln area; 3. Pilot hole; 4. Exploration and drainage drilling hole; 5. Blowout prevention device; 6. Drainage pipeline; 7. Flow meter; 8. Underground drainage system; 9. Control valve; 401. Inner layer flower pipe; 402. Outer layer flower pipe; 403. Crushed stone filler. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 2As shown, a high-stability exploration and drainage equipment for the old kiln area includes an exploration and drainage system 101 and an underground drainage system 8. The exploration and drainage system 101 includes a pilot hole 3 and an exploration and drainage borehole 4 in the main body 2 of the old kiln area, and the pilot hole 3 has a diameter less than 91 mm, the exploration and drainage borehole 4 has a diameter of 91 to 270 mm, and is 5 to 7 times the diameter of the exploration and drainage borehole 4 from the pilot hole. Both the pilot hole 3 and the exploration and drainage borehole 4 are constructed from the coal seam 1 to the main body 2 of the old kiln area, and both are connected to the underground drainage system 8 in the coal seam 1. The pilot hole 3 is a waterproof casing in the section outside the main body 2 of the old kiln area, and is a permeable flower pipe in the section within the main body 2 of the old kiln area. The advantage of this arrangement is that there are no large number of exploration and drainage auxiliary devices and large-scale supporting projects, it is simple and easy to implement, the existence of the pilot hole 3 reduces invalid exploration and drainage projects, and the exploration and drainage efficiency is higher.

[0023] Furthermore, the section inside the exploration and drainage water drilling hole 4 outside the main body 2 of the old kiln area is a waterproof casing, and the section inside the main body 2 of the old kiln area is a double-layer floral tube. The double-layer floral tube of the exploration and drainage water drilling hole 4 includes an inner floral tube 401, an outer floral tube 402 and a gravel filler 403 sandwiched therebetween, and the floral tube density of the inner floral tube 401 is 30% to 50% greater than that of the outer floral tube 402. The advantage of this arrangement is that the floral tube of the outer floral tube 402 can be changed into a partial floral tube and a partial waterproof casing by controlling the control valve 9, thereby controlling the exploration and drainage water volume.

[0024] Furthermore, the underground drainage system 8 is included in the space formed by excavation of the coal seam 1, and a blowout preventer 5, a drainage pipeline 6, a flow meter 7 and an underground drainage system 8 are sequentially arranged inside the coal seam 1. A control valve 9 is arranged on the outer surface of the exploration and release water drilling hole 4, and the front ends of the pilot hole 3 and the exploration and release water drilling hole 4 are arranged inside the blowout preventer 5. The advantage of this arrangement is that by observing the flow of the flow meter 7, when it reaches more than 70% of the capacity of the underground drainage system 8, the exploration and release water flow rate is reduced by adjusting the control valve 9.

[0025] Working principle: When using the high-stability old kiln area water exploration and release equipment, first of all, the small-aperture pilot hole 3 is simple and easy to implement, and can effectively find the main water-containing area in conjunction with the flow meter, providing a basis for the precise implementation of the subsequent water exploration and release drilling 4. Secondly, the design of the double-layer flower tube can, on the one hand, allow gravel to be placed in the borehole to provide certain support and filtering effects, thereby preventing water inrush and sand collapse; on the other hand, the multi-layer filtration of the flower tube can reduce the clogging of sand and stone. Thirdly, the outer flower tube 402 can effectively control the cross-sectional area of ​​the water flow, and can effectively control the water flow velocity. The combined blowout prevention device 5 can reduce the safety accidents of water inrush. This is the working principle of the high-stability old kiln area water exploration and release equipment.

Claims

1. A high-stability water exploration and drainage device for old kiln areas, comprising a water exploration and drainage system (101) and an underground drainage system (8), characterized in that: The water exploration and drainage system (101) includes a pilot hole (3) and a water exploration and drainage borehole (4) in the main body (2) of the old kiln area, and the pilot hole (3) has a diameter less than 91 mm, and the water exploration and drainage borehole (4) has a diameter of 91 to 270 mm, and is 5 to 7 times the diameter of the water exploration and drainage borehole (4) from the pilot hole (3). The pilot hole (3) is a waterproof casing in the section outside the main body (2) of the old kiln area, and is a water-permeable flower pipe in the section within the main body (2) of the old kiln area. The underground drainage system (8) is included in the space formed by coal seam (1) excavation, and the coal seam (1) is sequentially provided with a blowout prevention device (5), a drainage pipeline (6), a flow meter (7) and an underground drainage system (8).

2. The high-stability old kiln area water exploration and drainage equipment according to claim 1 is characterized in that: The water exploration and drainage borehole (4) is a waterproof casing in the section outside the main body (2) of the old kiln area, and is a double-layered flower pipe in the section within the main body (2) of the old kiln area.

3. The high-stability old kiln area water exploration and drainage equipment according to claim 1 is characterized in that: The double-layer floral tube of the water exploration and drainage borehole (4) comprises an inner floral tube (401), an outer floral tube (402) and a crushed stone filler (403) sandwiched therebetween, and the floral tube density of the inner floral tube (401) is 30% to 50% greater than that of the outer floral tube (402).

4. The high-stability old kiln area water exploration and drainage equipment according to claim 1 is characterized in that: The outer surface of the water exploration and release drilling hole (4) is provided with a control valve (9), and the pilot hole (3) and the front end of the water exploration and release drilling hole (4) are arranged inside the blowout prevention device (5).

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