CN102662198A

CN102662198A - Water jetting geophysical prospecting construction process applying drill special for geophysical prospecting

Info

Publication number: CN102662198A
Application number: CN2012101573393A
Authority: CN
Inventors: 陶艳娥
Original assignee: Shanghai Urban Construction Design Research Institute Co ltd
Current assignee: Shanghai Urban Construction Design Research Institute Group Co Ltd
Priority date: 2012-05-18
Filing date: 2012-05-18
Publication date: 2012-09-12
Anticipated expiration: 2032-05-18
Also published as: CN102662198B

Abstract

The invention discloses a water jetting geophysical prospecting construction process applying a drill special for geophysical prospecting. The process comprises the following steps of: step 1, confirming a hole position of a drill hole; step 2, adopting a conventional drill to drill a plurality of holes side by side; step 3, replacing the conventional drill with the drill special for geophysical prospecting after the drilling depth reaches 3-4m; step 4, adopting a high pressure water pump to inject water into a hollow drill rod, wherein high pressure water is sprayed from a water outlet hole of the drill special for geophysical prospecting to impact a hole bottom, and the drill special for geophysical prospecting is naturally sunk by utilizing a water jetting method; step 5, stopping sinking, wherein in a sinking process, when being blocked by a pipeline, the drill special for geophysical prospecting is stopped sinking; and step 6, obtaining elevation of a position on which the pipeline is located through measuring coordinates and elevation of the current hole position, and the sinking length of the drill rod at the moment, thereby obtaining three-dimensional coordinates of the pipeline. The construction process adopts the water jetting method as a working principle, so that the damage of the drill special for geophysical prospecting on an outer layer of the underground pipeline can be thoroughly avoided, the prospecting area of the drill can be enlarged, and the process has the beneficial effects of safety and high efficiency.

Description

Use the water jetting physical prospecting construction technology of physical prospecting target drill

Technical field

The present invention relates to the prospecting technique field, relate in particular to a kind of water jetting physical prospecting construction technology of using the physical prospecting target drill.

Background technology

In the present physical prospecting work, can adopt different exploration means according to different situations such as buried depth, pipeline materials.For example, to the physical prospecting of the metal material pipeline of conventional shallow embedding (referring generally to buried depth in 5 meters), the existing pipeline appearance of general direct employing gets final product.To buried metal or nonmetal pipeline (being the non-excavating construction pipeline), conventional pipeline appearance can't be surveyed, and the boring of therefore general employing rig is visited the technological means that appearance combines with magnetic.But, to buried nonmetal pipeline, or the pipeline of outsourcing one deck insulating material, the means that adopt rig boring boring and magnetic spy appearance to combine can not realize the physical prospecting purpose effectively, safely.And in a single day the existing conventional drill bit directly contacts pipeline, be easy to destroy the top layer of pipeline.

Like Fig. 1, shown in Figure 2, drill bit conventional in the physical prospecting field is made up of four blades 1 and a hollow circular-tube 2 that is used for being connected with drilling rod, is provided with sawtooth 11 in the lower end of blade 1.Because the lower end of drill bit is pointed and bossed sawtooth 11, in drilling process, when drill bit directly touches the outside surface of nonmetal pipeline, is easy to destroy the extexine of pipeline.Especially, when these pipelines are power pipeline,, possibly cause the generation of electric shock accidents at any time in case the outside protective seam of pipeline is destroyed.

Therefore, those skilled in the art is devoted to develop a kind of safe, water jetting physical prospecting construction technology of not destroying the outer field application physical prospecting of nonmetal pipeline target drill.

Summary of the invention

Because the above-mentioned defective of prior art, technical matters to be solved by this invention provides a kind of safe, water jetting physical prospecting construction technology of not destroying the outer field application physical prospecting of nonmetal pipeline target drill.

For realizing above-mentioned purpose, the invention provides a kind of water jetting physical prospecting construction technology of using the physical prospecting target drill, may further comprise the steps: step 1, according to the position, hole of the definite boring of the preliminary information of burying pipeline underground; Step 2 adopts conventional bit and several holes of gang drill; Step 3 after employing conventional bit drilling depth reaches 3 to 4 meters, changes conventional bit into the physical prospecting target drill; Step 4 adopts high-pressure hydraulic pump to hollow drilling rod water filling, and water under high pressure sprays at the bottom of the impact opening from the apopore of said physical prospecting target drill, utilizes water jetting that said physical prospecting target drill is sunk naturally; Step 5, said physical prospecting target drill run into pipeline and hinder in the sinking process, then can no longer sink; Step 6, through the coordinate and the absolute altitude of measurement position, hole this moment, and the sinking length of drilling rod, can obtain the absolute altitude of pipeline position, thereby draw the three-dimensional coordinate of pipeline.

Preferably, in step 5, up and down, the move left and right drilling rod, drive said physical prospecting target drill and move and promote, come hook to live pipeline.

The invention has the beneficial effects as follows:

Water jetting physical prospecting construction technology of the present invention; The employing water jetting is a principle of work, has thoroughly overturned the principle of work of existing geophysical prospecting bit, can thoroughly avoid geophysical prospecting bit to the outer field destruction of underground utilities; Can also enlarge the area of feeling of drill bit, have beneficial effects such as safe, efficient.

Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.

Description of drawings

Fig. 1 is the perspective view of existing conventional bit.

Fig. 2 is the perspective view of looking up of Fig. 1.

Fig. 3 is the structural representation of the first specific embodiment of physical prospecting special jewel among the present invention.

Fig. 4 is the structural representation that the physical prospecting target drill of Fig. 3 is connected with drilling rod.

Fig. 5 is the structural representation of another specific embodiment of physical prospecting target drill among the present invention.

Embodiment

Water jetting physical prospecting construction technology one specific embodiment of application physical prospecting target drill of the present invention may further comprise the steps:

Step 1 according to the preliminary information of burying pipeline underground, is analyzed the position at pipeline place, draws roughly coordinate and absolute altitude, and field lofting is made boring position, hole.

Step 2 adopts conventional bit and several holes of gang drill.Concrete as, with a drill bit and the gang drill 2-3 hole of 110mm, make the hole always distance greater than 30cm.

Step 3 after employing conventional bit drilling depth reaches 3 to 4 meters, changes conventional bit into the physical prospecting target drill.

Step 4 adopts high-pressure hydraulic pump to hollow drilling rod water filling, and water under high pressure sprays at the bottom of the impact opening from the apopore of physical prospecting target drill, utilizes water jetting that the physical prospecting target drill is sunk naturally.

Step 5, physical prospecting target drill hinder in case run into pipeline in the sinking process, then can no longer sink.Rap drilling rod and can produce rebound phenomenon this moment.

Simultaneously, can also about, the move left and right drilling rod, drive the physical prospecting target drill and move and promote, come hook to live pipeline, judge with further whether pipeline exists.

Step 6, through the coordinate and the absolute altitude of measurement position, hole this moment, and the sinking length of drilling rod, can obtain the absolute altitude of pipeline position, thereby draw the three-dimensional coordinate of pipeline.

Below describe the structure of above-mentioned physical prospecting target drill in detail.

As shown in Figure 3, a specific embodiment of physical prospecting target drill comprises a hollow body 1, a drilling rod connecting link 2.

Hollow body 1 is a metal circular tube, and both ends are all sealed, and offers some apopores 11 on the body.The optimum length of hollow body 1 is between 30 centimetres to 33 centimetres, and 3 discharge water holes 11, about 5 centimetres of the spacing in hole are offered in the bottom of body and both sides dislocation.

Drilling rod connecting link 2 is hollow metal circular tube, through modes such as welding, is fixedly installed on the hollow body 1.The inner chamber of the inner chamber of drilling rod connecting link 2 and hollow body 1 connects.The end of drilling rod connecting link 2 is provided with connecting thread 21.

As shown in Figure 4, drilling rod connecting link 2 is threaded with the link 31 of drilling rod 3 through connecting thread 21.The length of drilling rod connecting link 2 is good for 15-20 centimetre at degree.

As shown in Figure 5, another specific embodiment of physical prospecting target drill, structure and the foregoing description of present embodiment are basic identical, and institute's difference is that hollow body 1 connects in a side and is provided with first arm 12, also connects at opposite side and is provided with second arm 13.

First arm 12, second arm 13 are the hollow pipe fitting that offers apopore on closed-end, the body, and length is about 15 centimetres.The cavity perforation of the inner cavity of first arm 12, second arm 13 and hollow body 1.

In the present embodiment, hollow body 1 can adopt the high strength plastics pipe.Drilling rod connecting link 2 also can adopt identical high strength plastics pipe, is adhesively fixed with hollow body 1.

Physical prospecting target drill in the present embodiment is " ten " font, can increase the area of feeling of drill bit.

Physical prospecting construction technology of the present invention; The employing water jetting is a principle of work, has thoroughly overturned the principle of work of existing physical prospecting construction, can thoroughly avoid geophysical prospecting bit to the outer field destruction of underground utilities; Can also enlarge the area of feeling of drill bit, have beneficial effects such as safe, efficient.

In the process that inspection shaft is felt, also available this physical prospecting target drill comes at the bottom of hook inspection shaft the outward flange outstanding position and inspection shaft, to draw outstanding position of inspection shaft outward flange and the buried depth at the bottom of the inspection shaft.

More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims

1. water jetting physical prospecting construction technology of using the physical prospecting target drill may further comprise the steps:

Step 1 is according to the position, hole of the definite boring of the preliminary information of burying pipeline underground;

Step 2 adopts conventional bit and several holes of gang drill;

Step 3 after employing conventional bit drilling depth reaches 3 to 4 meters, changes conventional bit into the physical prospecting target drill;

Step 4 adopts high-pressure hydraulic pump to hollow drilling rod water filling, and water under high pressure sprays at the bottom of the impact opening from the apopore of said physical prospecting target drill, utilizes water jetting that said physical prospecting target drill is sunk naturally;

Step 5, said physical prospecting target drill run into pipeline and hinder in the sinking process, then can no longer sink;

2. water jetting physical prospecting construction technology as claimed in claim 1 wherein, in step 5, up and down, the move left and right drilling rod, drives said physical prospecting target drill and moves and promote, and comes hook to live pipeline.