A drilling hole sealing construction method

Abstract

The application discloses a kind of drilling hole sealing construction method, it is related to municipal engineering survey technical field, including the following steps: step S1, after completing drilling, sealing member is placed in drilling hole, the sealing member has annular flange for clamping the upper edge of drilling hole, to carry out temporary sealing to drilling hole, after setting period, it is opened again, and measurement stable water level is carried out;Step S2, after stable water level measurement is completed, first, core compaction is backfilled into drilling hole, then backfilling road surface concrete block is filled with first cement mortar gap, and then backfilling second cement mortar is placed in drilling hole with the sealing member, so that second cement mortar, drilling hole wall and the sealing member form cohesive force;Step S3, the top of the sealing member is sealed with cement or asphalt pavement layer, as permanent closure.The application can timely, reliably and safely seal the drilling hole, and is conducive to the safe operation of on-site work.

Description

TECHNICAL FIELD

[0001] The present application relates to the municipal engineering survey technical field, especially relates to a drilling hole sealing construction method. BACKGROUND

[0002] In the process of realizing the present application, the inventor found that at least the following problems exist in the prior art. At present, engineering survey is an important link in the early stage of engineering projects, and the main contents include: engineering survey, geophysical exploration, geotechnical engineering survey, etc. Among them, geotechnical engineering survey is an industry with high safety risk, especially when constructing in urban areas, underground pipe network is widespread, overhead power lines are networked, and on-site personnel are mixed, which further increases the danger of operation. Therefore, the safe operation of the site is the key to the safety production of geotechnical engineering survey.

[0003] The geotechnical engineering survey site operation mainly uses an oil pressure drilling machine for field operation. The outer diameter of the drilling opening is usually 130mm. After passing through the soil layer, the full-hole core method is used. During this period, various in-situ tests and on-site sampling are carried out. After the drilling is completed, the initial and stable water levels are accurately measured. Finally, the original soil is backfilled, rammed, and the original road surface condition is restored.

[0004] However, the current backfilling and hole sealing method has certain safety hazards. When the original soil is backfilled to restore the road surface, especially on the main road in the city, with the passage of time and the driving vibration of vehicles, the backfilling in the drilling hole will settle, the drilling hole will be exposed to the ground, and the safety of passing vehicles and pedestrians will be endangered. If cement grouting is used for hole sealing, the freshly drilled hole cannot be sealed in time. Generally, at least 24 hours of observation of stable water level is required before backfilling and restoration, which will also cause trouble to the road traffic and the safety of pedestrians during this period. SUMMARY

[0005] The present application aims to at least solve one of the above technical problems in the prior art to some extent. To this end, the present application provides a drilling hole sealing construction method, which can timely, reliably and safely seal the drilling hole, and is beneficial to the safe operation of the site.

[0006] The drilling hole sealing construction method according to the present application embodiment comprises the following steps:

[0007] Step S1, after completing the drilling, placing a sealing member in the drilling hole, the sealing member having an annular flange for clamping the upper edge of the drilling hole, thereby temporarily sealing the drilling hole, and opening after a set period of time to measure the stable water level;

[0008] Step S2, after the stable water level measurement is completed, the core is first tamped and backfilled into the drill hole, then the road surface concrete block is backfilled and the gap is filled with the first cement mortar, then the second cement mortar is backfilled and the sealing member is placed in the drill hole, so that the second cement mortar, the drill hole wall and the sealing member form a cohesive force;

[0009] Step S3, a road surface layer of cement or asphalt is sealed on the top of the sealing member as a permanent closure.

[0010] In an optional or preferred embodiment, in step S1, the sealing member includes a connecting cylinder and a cover plate fixedly connected to the upper end of the connecting cylinder, the edge of the cover plate is annularly protruded outside the outer wall of the connecting cylinder, thereby forming the annular flange.

[0011] In an optional or preferred embodiment, the cover plate is a round steel plate with a diameter of 160 mm and a thickness of 2 mm, and the connecting cylinder is a round steel cylinder with an outer diameter of 130 mm, a wall thickness of 2 mm and a length of 50 mm.

[0012] In an optional or preferred embodiment, the center of the cover plate is aligned with the center of the connecting cylinder, and the two are fixedly connected by seamless welding of the inner and outer sides of the joint part by manual electric arc welding.

[0013] In an optional or preferred embodiment, the cover plate and the connecting cylinder are both stainless steel members.

[0014] In an optional or preferred embodiment, in step S2, the backfilling depth of the road surface concrete block in the drill hole is 5-15 cm.

[0015] In an optional or preferred embodiment, in step S2, the backfilling depth of the second cement mortar in the drill hole is 0-5 cm.

[0016] In an optional or preferred embodiment, in step S3, the road surface layer covers the top of the cover plate and the bottom of the annular flange.

[0017] In an optional or preferred embodiment, in step S1, the set period is greater than 24 hours.

[0018] In an optional or preferred embodiment, it further includes step S4, periodically returning to check the sealing condition of the device during construction to ensure that the drill hole sealing is in place.

[0019] Based on the above technical scheme, the embodiment of the present application has at least the following beneficial effects: the above technical scheme, by designing the plugging member which can be used for plugging, after completing the drilling, the plugging member is placed in the drilling hole, the annular flange of the plugging member can be clamped on the upper side of the drilling hole, the drilling hole is temporarily plugged, the safety of pedestrians and vehicles can be ensured; subsequently, when permanent plugging is performed, the second cement mortar is backfilled and the plugging member is placed in the drilling hole, so that the second cement mortar, the drilling hole wall and the plugging member form cohesive force, and the plugging member is fixed, even if the backfilling material settles, the drilling hole will not be exposed to the ground. The present application can timely, reliably and safely plug the drilling hole, which is beneficial to the safe operation of the site. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in conjunction with the drawings and embodiments;

[0021] Fig. 1 is a perspective view of the plugging member in the embodiment of the present application;

[0022] Fig. 2 is a front view of the plugging member in the embodiment of the present application;

[0023] Fig. 3 is a hole sealing construction schematic view of the embodiment of the present application. DETAILED DESCRIPTION

[0024] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0025] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of the present application, the words such as arrangement, installation, connection and the like should be understood in a broad sense unless otherwise explicitly limited, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0028] The following refers to Figs. 1 to 3 , a drilling hole sealing construction method is shown, comprising the following steps:

[0029] Step S1, after completing the drilling, the sealing member 10 is placed in the drilling hole 21, the sealing member 10 has an annular flange 121 for clamping the upper edge of the drilling hole 21, thereby temporarily sealing the drilling hole 21.

[0030] Specifically, as Fig. 1 shown, the sealing member 10 includes a connecting cylinder 11 and a cover plate 12 fixedly connected to the upper end of the connecting cylinder 11, the edge of the cover plate 12 is annularly protruded outside the outer wall of the connecting cylinder 11, thereby forming an annular flange 121. In application, the field operation of geotechnical investigation mainly uses oil pressure drilling machine for field operation, and the outer diameter of the drilling opening is usually 130mm. In view of this, in the present embodiment, the cover plate 12 is a round steel plate with a diameter of 160mm and a thickness of 2mm; the connecting cylinder 11 is a round steel cylinder with an outer diameter of 130mm, a wall thickness of 2mm and a length of 50mm. The round and smooth cover plate 12 can ensure that no harm is caused to people or vehicles during use, and the safety of pedestrians and vehicles is ensured. The center of the cover plate 12 is aligned with the center of the connecting cylinder 11, and the inner and outer sides of the joint part are fixed by seamless welding by manual electric arc welding. It should be noted that the specifications and sizes of the cover plate and the connecting cylinder in the present embodiment can be adaptively adjusted according to the size of the drilling hole on site.

[0031] The opening is performed after a set period, and the stable water level is measured. Generally, the stable water level is observed 24 hours after drilling, so the set period is greater than 24 hours.

[0032] In the present embodiment, the cover plate 12 and the connecting cylinder 11 are both stainless steel members. Of course, the cover plate 12 and the connecting cylinder 11 can also be made of other corrosion-resistant materials.

[0033] It can be understood that the sealing member 10 is placed in the drilling hole 21, and the annular flange 121 of the sealing member 10 can clamp the upper edge of the drilling hole 21, thereby temporarily sealing the drilling hole 32, which can ensure the safety of pedestrians and vehicles.

[0034] Step S2, after the stable water level measurement is completed, it is understood in combination with Fig. 3 that the core 35 is first tamped and backfilled into the drilling hole 21 to a depth of 15cm.

[0035] The road surface concrete block 33 is backfilled and the first cement mortar 34 is used to fill the gaps. Specifically, the backfilling depth of the road surface concrete block 33 in the borehole 21 is 5-15 cm, and then the first cement mortar 34 is used to fill the gaps of the road surface concrete block 33.

[0036] The second cement mortar 32 is backfilled and the blocking member 10 is placed in the borehole 21, so that the second cement mortar 32, the borehole wall 32 and the blocking member 10 form cohesion. The backfilling depth of the second cement mortar 32 in the borehole 21 is 0-5 cm.

[0037] It can be understood that, after the second cement mortar 32 is backfilled and the blocking member 10 is placed in the borehole 21, the second cement mortar 34, the borehole wall 21 and the blocking member 10 form cohesion, which plays a fixing role for the blocking member 10. Even if the backfilling material, such as the rock core 35 or the road surface concrete block 33, settles, the borehole will not be exposed to the ground.

[0038] Step S3: A road surface layer 31 made of cement or asphalt is sealed on the top of the blocking member 10 as a permanent closure. Specifically, the road surface layer 31 covers the top of the cover plate 12 and the bottom of the annular flange 121.

[0039] Preferably, the method further comprises step S4: periodically checking the sealing condition of the device during construction to ensure that the borehole is properly sealed.

[0040] The present application can be applied to the permanent sealing of boreholes in engineering investigation, and can also be used for temporary sealing when measuring stable water level, and is particularly suitable for sealing boreholes in urban municipal road construction. The present application can solve the settlement problem caused by conventional backfilling sealing, avoid safety accidents caused by settlement in boreholes, and ensure the safe operation of drilling sites.

[0041] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present application.

Claims

1. A method of drilling a borehole construction, characterized by, It comprises the following steps: Step S1, after the drilling is completed, a blocking member is placed in the borehole, the blocking member has an annular flange for clamping the upper edge of the borehole, thereby temporarily blocking the borehole, and opening after a set period of time, and measuring the stable water level; the blocking member comprises a connecting cylinder and a cover plate fixedly connected to the upper end of the connecting cylinder, the edge of the cover plate is annularly protruded outside the outer wall of the connecting cylinder, thereby forming the annular flange; when the blocking member is placed in the borehole, the lower end of the connecting cylinder is located in the borehole, the side of the lower end of the connecting cylinder is abutted against the sidewall soil of the borehole, and the bottom of the annular flange is abutted against the soil of the upper edge of the borehole; Step S2, after the stable water level measurement is completed, the core is first tamped and backfilled into the borehole, then the road concrete block is backfilled and the first cement mortar is used to fill the gap, then the second cement mortar is backfilled and the blocking member is placed in the borehole, so that the second cement mortar, the borehole wall and the blocking member form cohesive force; Step S3, a road surface layer of cement or asphalt is sealed on the top of the blocking member as a permanent closure.

2. A method of drilling a borehole according to claim 1, characterised in that: The cover plate is a round steel plate with a diameter of 160 mm and a thickness of 2 mm; the connecting cylinder is a round steel cylinder with an outer diameter of 130 mm, a wall thickness of 2 mm and a length of 50 mm.

3. A method of drilling a borehole according to claim 2, characterised in that: The center of the cover plate is aligned with the center of the connecting cylinder, and the inside and outside of the joint part are fixed by seamless welding by manual electric arc welding.

4. The method of drilling a borehole according to claim 1, wherein: The cover plate and the connecting cylinder are both stainless steel members.

5. The method of drilling a borehole according to claim 1, wherein: In step S2, the backfilling depth of the road concrete block in the borehole is 5-15 cm.

6. A method of drilling a borehole according to claim 5, characterised in that: In step S2, the backfilling depth of the second cement mortar in the borehole is 0-5 cm.

7. A method of drilling a borehole according to claim 6, characterised in that: In step S3, the road surface layer covers the top of the cover plate and the bottom of the annular flange therein.

8. A method of drilling a borehole according to any one of claims 2 to 7, characterised in that: In step S1, the set period of time is greater than 24 hours.

9. A method of drilling a borehole according to any one of claims 2 to 7, characterised in that: It further comprises step S4, periodically checking the blocking condition of the device during construction to ensure that the borehole is blocked in place.

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