Drilling survey lofting auxiliary device for non-explosive excavation process

Abstract

The utility model provides a drilling survey lofting auxiliary device for a non-explosive excavation process, which comprises three lofting rings with round holes and a pile nail in running fit with one of the lofting rings, the three lofting rings are distributed in an equilateral triangle shape, the adjacent lofting rings are connected through a connecting arm, and the connecting arm is connected with the pile nail. The lofting ring is fixedly arranged at the end part of the connecting arm, the connecting arm is a telescopic arm which is adjusted along the length direction of the connecting arm, and at least one connecting arm is provided with a locking structure which locks the connecting arm at at least two working positions, so that not only can the distance between drilling marks be adjusted, but also the marking efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel engineering, in particular to a drilling measurement and lofting auxiliary device for non-explosive excavation process. BACKGROUND

[0002] In recent years, with the rapid development of national economy, the state expands domestic demand and increases investment in infrastructure, high-speed rail has made great progress in recent years, and tunnel engineering accounts for an increasing proportion in high-speed railway construction. In high-speed railway site selection, in order to save land or avoid dividing the region and relieving the traffic of trunk railway, the parallel existing line is usually adopted, which leads to the gradual increase of adjacent tunnel engineering. However, due to the small distance between adjacent tunnels, engineering safety and quality accidents are often caused during construction, which endangers the operation safety of existing lines. Non-explosive excavation replaces the traditional blasting process by using mechanical equipment and chemical agents. This process reduces the danger of explosion and reduces the probability of engineering accidents, and is also safer for construction personnel and equipment.

[0003] This process relies on the new Jinan to Zaoyuan high-speed railway JZTJ-6 new Longshan tunnel, the total length of the tunnel is 385m, including the length of 40m of the entrance open cut section and the length of 35m of the exit open cut section. The whole tunnel is parallel to the existing Beijing-Shanghai high-speed railway Longshan tunnel, and the net distance between the two tunnels is 60m. In order to reduce the influence on Beijing-Shanghai high-speed railway during construction, non-explosive excavation is required by design. The average uniaxial saturated compressive strength of the tunnel rock is 154MPa.

[0004] When performing non-explosive excavation process, measurement and lofting is an essential core step, which aims to identify the position of the drill hole. When using this process, the drill hole is arranged in the shape of a plum blossom, that is, the distance between each drill hole needs to be the same, and the distance is related to the thickness of the rock splitting resistance line at this place. The current drill hole identification is manually measured and identified by artificial, which is low in efficiency. Therefore, the technical personnel in the field need to develop a drill hole measurement and lofting auxiliary device which can provide identification efficiency. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the present application is to provide a drilling measurement and lofting auxiliary device for non-explosive excavation process, which can not only adjust the distance between drill hole identification, but also greatly improve the identification efficiency.

[0006] In order to achieve the above object, the first aspect, the application provides a kind of non-explosive excavation process's borehole survey lofting auxiliary device, including three lofting rings with round hole, with one of lofting ring rotation cooperation peg, three described lofting ring is equilateral triangle distribution, adjacent described lofting ring is connected by connecting arm, described lofting ring is fixedly arranged in the end of described connecting arm, described connecting arm is telescopic arm along its length direction adjustment, at least one described connecting arm is provided with locking structure that it is locked in at least two working positions.

[0007] Optionally, at least one of the connecting arms is provided with a scale ruler.

[0008] Optionally, the two connecting arms have a telescopic structure, and the locking structure is arranged on the other connecting arm.

[0009] Optionally, the telescopic structure includes a first connecting segment fixedly connected to the lofting ring at one end and a second connecting segment fixedly connected to the adjacent lofting ring at the other end, the first connecting segment is provided with a cavity, the second connecting segment is slidingly connected to the cavity, and a limiting structure is arranged between the cavity and the second connecting segment.

[0010] Optionally, the limiting structure includes a limiting tooth fixedly arranged in the cavity and a rack arranged on the side wall of the second connecting segment along the length direction of the second connecting segment and matched with the limiting tooth.

[0011] Optionally, the locking structure includes a first locking segment fixedly connected to the lofting ring at one end and a second locking segment fixedly connected to the adjacent lofting ring at the other end, the first locking segment is provided with a locking cavity, the second locking segment is slidingly connected to the locking cavity, the first locking segment is provided with a locking hole communicated with the locking cavity, the second locking segment is provided with a plurality of positioning holes along the length direction thereof, and a locking pin matched with the positioning holes is slidingly arranged in the locking hole.

[0012] Optionally, the connecting arm and the lofting ring are integrally formed or welded.

[0013] The auxiliary device for non-explosive excavation process drilling measurement lofting provided by the utility model has the advantages that: the auxiliary device can quickly mark when marking the drilling, and after marking is completed, the auxiliary device is rotated with one of the lofting rings as the center, and then the marking is sequentially performed, finally the drilling forms a plum blossom shape mark, and the spacing between each drilling is the same, when the spacing needs to be adjusted according to the rock splitting line thickness, the length of the connecting arm of the auxiliary device can be adjusted to achieve the adjustment, which is not only convenient to operate and improves the efficiency, but also can be applied to different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The illustrations, together with their description, serve to explain the application. In the drawings:

[0015] Fig. 1 is the perspective view of the utility model;

[0016] Fig. 2 is the pile schematic diagram;

[0017] Fig. 3 is the borehole mark distribution diagram.

[0018] Wherein: 1, lofting ring, 2, connecting arm, 3, limit tooth, 4, rack, 5, lock hole; 6, positioning hole; 7, pile. DETAILED DESCRIPTION

[0019] In order to make the person skilled in the art better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] And, in addition to the above-mentioned part of the term can be used to indicate the orientation or position relationship, but also can be used to represent other meanings, for example, the term "upper" in some cases can also be used to represent a certain dependent relationship or connection relationship. For those of ordinary skill in the art, the specific meaning of these terms in this application can be understood according to the specific circumstances.

[0023] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] When carrying out non-explosive excavation of the adjacent camp hard granite tunnel open cut section of high-speed railway, the drilling + hydraulic splitting process is adopted for construction. This construction method can effectively improve the construction efficiency of the hard granite tunnel open cut section, while the equipment investment is less, the construction speed is large, the economy is strong, and the disturbance to the operating line is small.

[0026] Method one: using excavator to drill and split into one machine to punch + split;

[0027] Method two: using down-the-hole drill to punch, and hydraulic splitting machine to split.

[0028] Non-explosive excavation process cost comparison table

[0029]

[0030]

[0031] Design excavation volume 11786m 3 Considering 20h working hours per day, the excavation period and cost of each process open cut section are compared:

[0032] Method one: 11786 / (20*16.16) = 36.5d; Equipment cost: 6.5*36.5 / 30 = 79,000 yuan;

[0033] Method two: 11786 / (20*7.82) = 75.4d; Equipment cost: 2.3*75.4 / 30 = 58,000 yuan;

[0034] Cantilever tunneling machine: 11786 / (20*7.82) = 111.2d; Equipment cost: 35*111.2 / 30 = 1,297,000 yuan;

[0035] Considering the construction period and cost, the 360 excavator drilling and splitting integrated machine scheme is the best.

[0036] And the construction process is as follows:

[0037] Step one: settlement observation

[0038] Settlement observation piles are set at a position 50 cm outside the excavation line of the side slope of the open cut section, with a ring spacing of 10 m. Through monitoring of the observation piles, the disturbance of the drilling + hydraulic splitting process to the surrounding mountains is mastered, and the construction process of each working condition is improved or optimized according to the data.

[0039] Step two: measurement and lofting

[0040] According to the results of the process test, the rock splitting resistance line thickness at this place is about 1 m, and the drilling position is marked at an interval of 1 m in a plum blossom shape.

[0041] Step three: drilling + splitting

[0042] The modified equipment adopts PSK-130H type drilling and splitting machine, the drilling diameter is 14 cm, and the splitting rod diameter is 13 cm. The single drilling depth is 1.5 m, and the effective splitting depth is 1.3 m.

[0043] Step four: slag discharge

[0044] Shandong Liugong E6225E excavator and 36 cubic meter slag car are used for loading and transportation.

[0045] Step five: feedback of monitoring results

[0046] According to the monitoring results from May 16, 2024 to June 15, 2024, each point has basically no change, the maximum cumulative deformation value is 12 mm, and the method has small disturbance to the slope and existing line, which can be used to guide the construction of the hidden hole.

[0047] The auxiliary tool in the application is designed for the measurement and lofting in step two, and its specific structure is as follows:

[0048] As shown in Figs. 1-3 A drilling measurement and lofting auxiliary device for non-explosive excavation process, comprising three lofting rings 1 provided with circular holes, a stake 7 in rotational cooperation with one of the lofting rings 1, the three lofting rings 1 are distributed in an equilateral triangle shape, adjacent lofting rings 1 are connected through connecting arms 2, the lofting ring 1 is fixedly arranged at the end of the connecting arm 2, the connecting arm 2 is a telescopic arm adjusted along its length direction, and at least one connecting arm 2 is provided with a locking structure for locking it in at least two working positions.

[0049] The operation process is as follows: first, one of the setting-out rings 1 is placed in a preset position and marked, then the peg 7 is inserted into the setting-out ring 1, and the other two setting-out rings 1 are marked, after the marking is completed, the auxiliary device is rotated with the peg 7 as the center, one of the setting-out rings 1 is moved to the marked position of the other setting-out ring 1, then the position of the other setting-out ring 1 is marked, and the cycle is repeated in sequence until the marking of one quincunx-shaped drilling hole is completed, then the peg is pulled out, and the above cycle is repeated with the marked drilling hole as the initial point, so that the marking of the entire drilling hole is completed, and when the drilling hole spacing needs to be adjusted under different working conditions, the locking structure is unlocked, the length of the telescopic arm is adjusted, and the operation is convenient.

[0050] In order to facilitate the operator to refer when the length is adjusted, at least one of the connecting arms 2 is provided with a scale ruler.

[0051] Preferably, the two connecting arms 2 have telescopic structures, and the locking structure is arranged on the other connecting arm 2. Specifically, the telescopic structure comprises a first connecting segment fixedly connected to the setting-out ring 1 at one end and a second connecting segment fixedly connected to the adjacent setting-out ring 1 at the other end, a cavity is formed in the first connecting segment, the second connecting segment is in sliding fit with the cavity, a limiting structure is arranged between the cavity and the second connecting segment, the limiting structure comprises a limiting tooth 3 fixedly arranged in the cavity and a rack 4 arranged on the side wall of the second connecting segment along the length direction of the second connecting segment and matched with the limiting tooth 3, the locking structure comprises a first locking segment fixedly connected to the setting-out ring 1 at one end and a second locking segment fixedly connected to the adjacent setting-out ring 1 at the other end, a locking cavity is formed in the first locking segment, the second locking segment is in sliding fit with the locking cavity, a lock hole 5 is formed in the first locking segment and communicated with the locking cavity, a plurality of positioning holes 6 are formed in the second locking segment along the length direction of the second locking segment, and a locking pin matched with the positioning holes 6 is slidably arranged in the lock hole 5.

[0052] In order to facilitate processing, the connecting arm 2 is integrally formed with the setting-out ring 1 or is fixedly welded.

[0053] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A borehole surveying and layout aid for a non-explosive excavation process, characterised in that, The application relates to a three-stake setting-out ring, which comprises three stake setting-out rings provided with circular holes, a stake in rotational cooperation with one of the stake setting-out rings, and connecting arms connecting the adjacent stake setting-out rings, wherein the stake setting-out rings are fixedly arranged at the ends of the connecting arms, the connecting arms are telescopic arms adjustable along the length direction, and at least one of the connecting arms is provided with locking structures for locking the connecting arm in at least two working positions.

2. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 1, characterised in that: At least one of the connecting arms is provided with a scale ruler.

3. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 1, characterised in that: Two of the connecting arms are provided with telescopic structures, and the locking structures are arranged on the other connecting arm.

4. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 3, characterised in that: The telescopic structure comprises a first connecting section fixedly connected with the stake setting-out ring at one end and a second connecting section fixedly connected with the adjacent stake setting-out ring at the other end, a cavity is formed in the first connecting section, the second connecting section is in sliding cooperation with the cavity, and a limiting structure is arranged between the cavity and the second connecting section.

5. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 4, characterised in that: The limiting structure comprises limiting teeth fixedly arranged in the cavity and a gear rack arranged on the side wall of the second connecting section along the length direction of the second connecting section and in cooperation with the limiting teeth.

6. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 3, characterised in that: The locking structure comprises a first locking section fixedly connected with the stake setting-out ring at one end and a second locking section fixedly connected with the adjacent stake setting-out ring at the other end, a locking cavity is formed in the first locking section, the second locking section is in sliding cooperation with the locking cavity, a locking hole is formed in the first locking section and in communication with the locking cavity, a plurality of positioning holes are formed in the second locking section along the length direction of the second locking section, and a locking pin is slidably arranged in the locking hole and in cooperation with the positioning holes.

7. A borehole surveying and layout aid for a non-explosive excavation process as claimed in claim 1, characterised in that: The connecting arm and the stake setting-out ring are integrally formed or fixedly welded.

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