Underground powerhouse rock wall crane beam structure

Abstract

The utility model provides a rock wall crane beam structure of an underground powerhouse. The rock wall crane beam structure comprises a rock wall crane beam body, a wall-attached wall, a side wall, a rock table area, surrounding rock, a side wall anchor rod, a rock wall crane beam stress anchor rod and a wall-attached wall pulling anchor rod, pouring on the rock wall of the surrounding rock to form a side wall; a rock table area is formed in the middle upper position of the side wall; a rock wall crane beam body is formed outside the rock table area through pouring, and a wall-attached wall for supporting the rock wall crane beam body is arranged below the rock wall crane beam body; the side wall is anchored with the surrounding rock through a side wall anchor rod; the palisade crane beam body is anchored with surrounding rock through the palisade crane beam stress anchor rod; and the wall-attached wall is anchored with the surrounding rock through the wall-attached wall pulling anchor rod. According to the underground powerhouse rock wall crane beam structure, the structure system is anchored on the side wall of the underground powerhouse through the anchoring system, the stability and safe operation of the rock wall crane beam structure are ensured, and the underground powerhouse rock wall crane beam structure is safe, reliable and convenient to operate and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of crane beam structures, specifically to a kind of underground powerhouse rock wall crane beam structure. BACKGROUND

[0002] The underground powerhouse rock wall crane beam of pumped storage power station is the component that reinforced concrete crane beam is fixed on rock wall by force anchor rod, and the dead weight of crane and reinforced concrete crane beam is transmitted to underground powerhouse rock mass by force anchor rod and the friction on the contact surface of reinforced concrete crane beam and rock. The rock wall crane beam is the main bridge machine support structure commonly used in current pumped storage power station, and its main advantages are simple structure system, reduced powerhouse span and saved construction period of powerhouse. SUMMARY

[0003] In view of the defects in the prior art, the underground powerhouse rock wall crane beam structure can effectively solve the above problems.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] The utility model provides a kind of underground powerhouse rock wall crane beam structure, comprising: rock wall crane beam body (1), attached wall (2), side wall (3), rock platform area (4), surrounding rock (5), side wall anchor rod (101), rock wall crane beam force anchor rod (102) and attached wall wall tie anchor rod (103);

[0006] The side wall (3) is formed by the rock wall pouring of the surrounding rock (5);The middle part of the side wall (3) is formed at the upper position of the rock platform area (4);The rock platform area (4) is poured to form the rock wall crane beam body (1) outside, and the attached wall (2) supporting the rock wall crane beam body (1) is arranged below the rock wall crane beam body (1);

[0007] The side wall (3) is anchored with the surrounding rock (5) by the side wall anchor rod (101);The rock wall crane beam body (1) is anchored with the surrounding rock (5) by the rock wall crane beam force anchor rod (102);The attached wall (2) is anchored with the surrounding rock (5) by the attached wall wall tie anchor rod (103).

[0008] Preferably, the rock platform area (4) is backfilled with the same type of concrete as the rock wall crane beam body (1) and is provided with reinforcing bars.

[0009] Preferably, the contact surface of the rock wall crane beam body (1) and the attached wall (2) is an inclined surface.

[0010] Preferably, the outer surface of the attached wall (2) is 15cm thinner than the outer surface of the rock wall crane beam body (1).

[0011] Preferably, each rock wall crane beam stress anchor rod (102) is at least 1.5m deep into the rock wall crane beam body (1), and the rock wall crane beam stress anchor rod (102) is provided with a bend at the end.

[0012] Preferably, each rock wall crane beam stress anchor rod (102) is provided in an inclined manner and is arranged in a conical shape outwardly diverging relative to the rock wall crane beam body (1).

[0013] Preferably, the specifications of the attached wall tie anchor rod (103) are consistent with the specifications of the side wall anchor rod (101), the attached wall tie anchor rod (103) is provided in multiple and arranged in parallel, and the side wall anchor rod (101) is provided in multiple and arranged in parallel.

[0014] Preferably, the interval distance of the attached wall tie anchor rod (103) is smaller than the interval distance of the side wall anchor rod (101).

[0015] Preferably, the lower end surface of the attached wall (2) is provided with a lower structure column reserved reinforcing bar (104), one end of each lower structure column reserved reinforcing bar (104) is deep into the attached wall (2), and the other end of the exposed part is used for being connected with a later-constructed column.

[0016] The underground powerhouse rock wall crane beam structure provided by the utility model has the following advantages:

[0017] The underground powerhouse rock wall crane beam structure provided by the utility model is anchored on the side wall of the underground powerhouse through an anchoring system, ensures stable and safe operation of the rock wall crane beam structure, and is safe and reliable and convenient to operate and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model provides a kind of underground powerhouse rock wall crane beam structure's overall section view;

[0019] Figure 2 The utility model provides a kind of underground powerhouse rock wall crane beam structure's partial structure's section view;

[0020] Wherein: 1-rock wall crane beam body;2-attached wall;3-side wall;4-rock table area;5-surrounding rock;101-side wall anchor rod;102-rock wall crane beam stress anchor rod;103-attached wall tie anchor rod;104-lower structure column reserved reinforcing bar;A1-upper inflection point;A2-lower inflection point;A3-pre-splitting control point;A4-defect lower limit point. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0022] The underground powerhouse rock wall crane beam structure is anchored on the side wall of the underground powerhouse through an anchoring system, ensures stable and safe operation of the rock wall crane beam structure, and is safe and reliable and convenient to operate and maintain.

[0023] Referring to Figure 1 and Figure 2 , the utility model provides a kind of underground powerhouse rock wall crane beam structure, comprising: rock wall crane beam body 1, wall 2, side wall 3, rock platform area 4, surrounding rock 5, side wall anchor rod 101, rock wall crane beam stress anchor rod 102 and wall tie anchor rod 103 of wall 2;

[0024] The side wall 3 is formed by pouring surrounding rock 5 in rock wall;The side wall 3 is concrete spray layer;Rock platform area 4 is formed in the upper middle part of side wall 3;Rock wall crane beam body 1 is formed by pouring surrounding rock 5 outside rock platform area 4, and wall 2 is arranged below rock wall crane beam body 1 to support rock wall crane beam body 1;

[0025] The side wall 3 is anchored with surrounding rock 5 through side wall anchor rod 101;Rock wall crane beam body 1 is anchored with surrounding rock 5 through rock wall crane beam stress anchor rod 102;Wall 2 is anchored with surrounding rock 5 through wall tie anchor rod 103.

[0026] In the utility model, rock platform area 4 is backfilled with the same type of concrete as rock wall crane beam body 1, and is provided with reinforcing steel bars, and the specification and quantity of reinforcing steel bars are adjusted according to the range of rock platform area 4.

[0027] In the utility model, the contact surface of rock wall crane beam body 1 and wall 2 is inclined surface.The outer surface of wall 2 is 15cm thinner than the outer surface of rock wall crane beam body 1, which is used to leave space for later decoration, to ensure the effect of later plant decoration and the beauty of the interior of plant.

[0028] In the utility model, each rock wall crane beam stress anchor rod 102 is at least 1.5m deep into rock wall crane beam body 1, and the end of rock wall crane beam stress anchor rod 102 is bent to form a whole with rock wall crane beam body 1, and other system anchor rods in non-rock wall crane beam area can not be bent, and the length of the exposed part is consistent with the thickness of side wall 3.

[0029] Each rock wall crane beam stress anchor rod 102 is inclined, and is arranged in a conical shape outward relative to rock wall crane beam body 1.

[0030] In the utility model, the specifications of the wall-attached wall tie anchor rod 103 are consistent with or stronger than the specifications of the side wall anchor rod 101, the wall-attached wall tie anchor rod 103 is provided in multiple numbers and is arranged in parallel, and the side wall anchor rod 101 is provided in multiple numbers and is arranged in parallel. The interval distance of the wall-attached wall tie anchor rod 103 is smaller than the interval distance of the side wall anchor rod 101, the wall-attached wall tie anchor rod 103 arranged in a high density ensures that the wall-attached wall 2 effectively adheres to the rock surface and improves the friction between the wall-attached wall 2 and the surrounding rock 5. The outer exposed part of the wall-attached wall tie anchor rod 103 can be bent.

[0031] In the utility model, the lower end surface of the wall-attached wall 2 is provided with a lower structural column reserved reinforcing bar 104; one end of each lower structural column reserved reinforcing bar 104 penetrates into the wall-attached wall 2, and the other end of the outer exposed part is used for being connected with a later-constructed column. The lower structural column reserved reinforcing bar 104 ensures the stability of the later-constructed column and forms an entirety with the wall-attached wall 2, and 6-9 reinforcing bars can be arranged at one position.

[0032] In actual application, the rock platform area 4 is an area surrounded by the upper inflection point A1, the lower inflection point A2, the pre-splitting control point A3 and the defect lower limit point A4 in the drawing, the pre-splitting control point A3 is the midpoint of the upper inflection point A1 and the lower inflection point A2 in the elevation, is also the demarcation point of layering excavation, and is also the lower limit point of the pre-splitting blasting hole control of the upper layer excavation side wall, the position of the point is too shallow to be not conducive to the formation of the rock wall crane beam body shape, and is too deep to be not conducive to the overall stability of the rock wall crane beam. The angle between the line connecting the lower inflection point A2 and the defect lower limit point A4 and the vertical plane of the rock wall is called the rock wall angle β, and the minimum value of the angle is 11° through research, that is, the value is 11°-20°.

[0033] The height of the wall-attached wall 2 below the lower inflection point A2 should be determined comprehensively according to the surrounding rock geological conditions and the rock platform area 4 range, and is not less than 2.5 m, the height of the wall-attached wall 2 is too low to play a protective role on the rock platform area 4, and is too high to be large in engineering quantity and uneconomical.

[0034] The excavation span above the pre-splitting control point A3 is generally 75 cm-100 cm wider than the excavation span below the pre-splitting control point A3, according to engineering experience, the utility model suggests that 75 cm is used.

[0035] In the application, the side wall anchor rod 101 in the anchoring system mainly functions to support the surrounding rock of the underground powerhouse, ensure the safety and stability of the side wall, and thus improve the bearing capacity of the rock wall crane beam base; the function of the rock wall crane beam stress anchor rod 102 is to transmit the load of the rock wall crane beam to the surrounding rock 5; the function of the attached wall wall tie anchor rod 103 is to improve the friction coefficient of the attached wall wall 2 and the side wall 3, so that the attached wall wall 2 can better adhere to the rock wall, thereby better supporting the rock wall crane beam body 1; the function of the lower structure column reserved reinforcing bar 104 is to better connect the attached wall wall lower structure column and the attached wall wall 2, and to assist in supporting the attached wall wall 2 and the rock wall crane beam body 1, so that the overall structure stress is more reasonable.

[0036] The utility model provides a kind of rock wall crane beam structure of underground powerhouse, rock wall crane beam body 1, attached wall wall 2, side wall 3, rock platform area 4 and surrounding rock 5 form structure system, side wall anchor rod 101, rock wall crane beam stress anchor rod 102, attached wall wall tie anchor rod 103 and lower structure column reserved reinforcing bar 104 form anchoring system, rock platform area 4 is the area surrounded by upper inflection point A1, lower inflection point A2, pre-splitting control point A3 and defect lower limit point A4 in drawing, make rock wall crane beam stress condition worse, it is not conducive to rock wall crane beam structure stability and safe operation, the utility model anchors structure system on the side wall of underground powerhouse by anchoring system under the premise of not increasing construction period, ensure rock wall crane beam structure stability and safe operation.

[0037] Therefore, the utility model provides a kind of rock wall crane beam structure of underground powerhouse, anchors structure system on the side wall of underground powerhouse by anchoring system, ensure rock wall crane beam structure stability and safe operation, rock wall crane beam structure of underground powerhouse is safe and reliable, convenient operation maintenance.

[0038] Below, a certain large pumped storage power station project using the technical scheme of the utility model is taken as an example to further illustrate in conjunction with the drawings:

[0039] A certain large pumped storage power station project, according to the hoisting and operation needs of power station powerhouse, sets rock wall crane beam structure, the design excavation construction period of this part is 4.5 months, and the entire underground powerhouse design excavation construction period is 22 months, in order to realize early production and power generation, the owner unit proposes the requirement of accelerating the underground powerhouse excavation construction period, and the structure of the utility model is adopted in powerhouse, breaks the inherent thinking of design personnel, initiatively gives up smooth blasting of rock platform part, only carries out pre-splitting blasting to side wall, and then clears prop and forms rock platform naturally, which is verified by engineering example to save construction period by about two months, and finally the entire underground powerhouse construction period is completed in 17 months, after structure calculation and on-site operation inspection, the rock wall crane beam structure and anchoring mode meet the specification requirements, and the body is safe and reliable after actual engineering verification.

[0040] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

1. An underground powerhouse rock wall crane beam structure, characterized in that, The invention relates to a rock wall crane beam structure, which comprises: a rock wall crane beam body (1), a wall-attached wall (2), a side wall (3), a rock platform area (4), a surrounding rock (5), a side wall anchor rod (101), a rock wall crane beam force anchor rod (102) and a wall-attached wall tie anchor rod (103); the side wall (3) is formed by pouring the surrounding rock (5); the middle part of the side wall (3) is located above the rock platform area (4); the rock platform area (4) is formed by pouring the rock wall crane beam body (1) on the outside of the rock platform area (4), and the wall-attached wall (2) is arranged below the rock wall crane beam body (1) to support the rock wall crane beam body (1); the side wall (3) is anchored to the surrounding rock (5) by the side wall anchor rod (101); the rock wall crane beam body (1) is anchored to the surrounding rock (5) by the rock wall crane beam force anchor rod (102); and the wall-attached wall (2) is anchored to the surrounding rock (5) by the wall-attached wall tie anchor rod (103).

2. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, The rock platform area (4) is backfilled with the same type of concrete as the rock wall crane beam body (1), and is provided with steel bars.

3. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, The contact surface between the rock wall crane beam body (1) and the wall-attached wall (2) is an inclined surface.

4. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, The outer surface of the wall-attached wall (2) is 15 cm thinner than the outer surface of the rock wall crane beam body (1).

5. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, Each rock wall crane beam force anchor rod (102) penetrates into the rock wall crane beam body (1) by at least 1.5 m, and is provided with a bend at the end.

6. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, Each rock wall crane beam force anchor rod (102) is arranged obliquely and is arranged in a conical shape outward relative to the rock wall crane beam body (1).

7. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, The wall-attached wall tie anchor rod (103) has the same specifications as the side wall anchor rod (101), and a plurality of wall-attached wall tie anchor rods (103) are arranged in parallel; and a plurality of side wall anchor rods (101) are arranged in parallel.

8. The underground powerhouse rock wall crane beam structure according to claim 7, characterized in that, The interval distance of the wall-attached wall tie anchor rod (103) is smaller than the interval distance of the side wall anchor rod (101).

9. The underground powerhouse rock wall crane beam structure according to claim 1, characterized in that, The lower end surface of the wall-attached wall (2) is provided with a lower structure column reserved reinforcing bar (104); one end of each lower structure column reserved reinforcing bar (104) penetrates into the wall-attached wall (2), and the other end of the lower structure column reserved reinforcing bar (104) is exposed and is used to be connected to a later-constructed column.

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