CN205080268U - Use and move seismic wave test system of spy as seismic source - Google Patents

Use and move seismic wave test system of spy as seismic source Download PDF

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Publication number
CN205080268U
CN205080268U CN201520867769.3U CN201520867769U CN205080268U CN 205080268 U CN205080268 U CN 205080268U CN 201520867769 U CN201520867769 U CN 201520867769U CN 205080268 U CN205080268 U CN 205080268U
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China
Prior art keywords
ground
seismic
weight
guide rod
hole
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Active
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CN201520867769.3U
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Chinese (zh)
Inventor
李国和
牛永效
赵广茂
黄在中
李鹏
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China Railway Design Corp
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China Railway Third Survey and Design Institute Group Ltd
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Abstract

The utility model discloses an use and move seismic wave test system of spy as seismic source, by downthehole move to visit excite seismic source, seismic wave trigger and a plurality of wave detector to form, downtheholely move the spy and excite the seismic source to include weight, guide arm, hammer seat, drilling rod and move the probe, guide arm, drilling rod and move the probe and from top to bottom connect gradually, the weight is installed on the guide arm, the hammer seat is installed at the guide arm lower extreme, moving the probe be located ground drilling and with hole bottom in close contact with, guide arm weight, guide arm, hammer seat are more than ground, the seismic wave trigger includes that tool joint, ground connect and the seismic detector, and tool joint's one end is connected on the drilling rod, the one end that ground connects is hugged closely ground and is placed, and the other end of tool joint and ground joint passes through the cable and is connected with the seismic detector, every wave detector all is connected with the seismic detector. This seismic wave test system seismic source excitation energy is big, the decay is little, and its simple structure, convenient to use, reconnaissance are with low costs.

Description

The seismic wave test system being focus with dynamic spy
Technical field
The utility model relates to engineering geological investigation field, particularly relates to a kind of seismic wave test system being focus with dynamic spy.
Background technology
Seismic exploration is a kind of geophysical exploration method of engineering investigation field widespread use, carrying out the occurrence status of Underground tectonic structure and geologic body by measuring the propagation of elastic wave in Rock And Soil that excite of man-made explosion, being mainly used in the aspect such as evaluation of the division on stratum, the identification of unfavorable geologic body and Rock And Soil soft or hard degree.
In seismic exploration process, the selection of focus is most important, is directly connected to the quality of data acquisition.At present, focus mainly comprise ground excite with hole in excite two large classes, ground excites based on hammering focus, and energy is less, and simultaneously by the impact of shallow ground mulching layer, energy attenuation is comparatively large, and compared with explosive source in hole, its data acquisition quality is often not high; Excite in hole and be positioned at below overlayer, effectively can avoid the impact of shallow ground mulching layer, and be focus mainly with explosive, energy is large, it is little to decay, data acquisition quality is higher, but explosive source cost is high, examination & approval difficulty is large, simultaneously for the consideration of secure context, near village, farmland, factories and miness etc., explosive source is forbidden to use.
Summary of the invention
For problems of the prior art, the utility model provide a kind of epicenter excitation energy large, decay little, structure is simple, lower-cost seismic wave test system.
For this reason, the technical solution of the utility model is as follows:
The seismic wave test system that one is focus with dynamic sounding (hereinafter referred to as dynamic spy), be made up of explosive source, seismic event trigger and the multiple wave detector visited dynamic in hole, in described hole, dynamic explosive source of visiting comprises weight, guide rod, hammer seat, drilling rod and dynamic probe, and described guide rod, drilling rod are from top to bottom connected successively with dynamic probe; Described weight is arranged on guide rod, can promote under the effect of external force and fall along guide rod; Described hammer seat is arranged on the lower end of guide rod, for supporting the weight of whereabouts; During use, described dynamic probe be positioned at the boring that extends to below ground cover and with close contact at the bottom of hole, described guide rod weight, guide rod, hammer seat are positioned at more than ground; Described seismic event trigger comprises drill pipe sub, Ground Service Plug and seismograph, one end of described drill pipe sub is connected on described drilling rod, one end close proximity to ground of described Ground Service Plug is placed, and described drill pipe sub is connected with seismograph by cable with the other end of Ground Service Plug; Described multiple wave detector is arranged on the ground around boring in certain limit, and each wave detector is all connected with seismograph.
Preferably, one end that described Ground Service Plug close proximity to ground is placed is placed on the ground of described boring around in radius 2m, described guide rod, connects respectively by joint between drilling rod and dynamic probe.
Described weight is cylindrical, has wherein been formed centrally through hole, and described guide rod passes from the through hole of weight, weight by cable suspension on rig.
The seismic wave test system that is focus with dynamic spy of the present utility model, in passing hole, the dynamic test macro visiting explosive source and seismic event trigger composition realizes the collection to seismic data, when it tries with detection dynamic in conventional orifices, the energy of the dynamic probe of weight impact is for focus, excitation energy is large, it is little to decay, and avoids the problem that shallow ground mulching layer causes energy attenuation.This test system structure is simple, easy to use, can ensure the acquisition quality of seismic data, significantly reduces again prospecting cost.
Accompanying drawing explanation
Fig. 1 is of the present utility model with dynamic spy be focus seismic wave test system architecture and behaviour in service schematic diagram.Wherein:
1. seat 5. joint 6. drilling rod hammered into shape by rig 2. weight 3. guide rod 4.
7. drill pipe sub 8. Ground Service Plug 9. seismograph 10. wave detector 11. overlayer
12. dynamic probes
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail.
As shown in the figure, the seismic wave test system being focus with dynamic spy of the present utility model is made up of explosive source, seismic event trigger and the multiple wave detector visited dynamic in hole.In described hole, dynamic explosive source of visiting comprises weight 2, guide rod 3, hammer seat 4, drilling rod 6 and dynamic probe 12.Described seismic event trigger comprises drill pipe sub 7, Ground Service Plug 8 and seismograph 9.
Weight 2 is generally cylindrical, by cable suspension on rig 1, through hole is left at the center of weight 2, and the inside dimension of described through hole is more bigger than the external dimensions of guide rod 3, guide rod 3 is through the through hole at weight 2 center, and weight 2 can promote and fall along guide rod 3 under the effect of external force.Hammer seat 4 is arranged on the lower end of guide rod 3, and hammer seat 4 is for supporting the weight 2 of whereabouts.Guide rod 3 is connected with the drilling rod 6 being positioned at its underpart by joint 5, and drilling rod 6 is connected with the dynamic probe 12 being positioned at its underpart by a joint.During use, dynamic probe 12 be positioned at the boring that extends to below ground cover and with close contact at the bottom of hole, guide rod weight 2, guide rod 3, hammer seat 4 into shape and be positioned at more than ground.
One end of described drill pipe sub 7 is connected on described drilling rod 6, and one end of described Ground Service Plug 8 is arranged on the ground around boring within radius 2m, and close proximity to ground is placed, and described drill pipe sub 7 is connected with seismograph 9 by cable with the other end of Ground Service Plug 8.
Described multiple wave detector 10 is arranged on the ground around boring in certain limit, and each wave detector 10 is all connected with seismograph 9.
In an embodiment of the present utility model, the diameter of guide rod 3 is 42mm, the through-hole diameter 3-4mm larger than the diameter of guide rod 3 at weight 2 center; The diameter of hammer seat 4 is less than 1/2 of weight 2 diameter and is greater than 100mm.
When this seismic test system of onsite application carries out seismic wave test, first bore by rig the boring that one passes overlayer 11, according to shown in Fig. 1, each assembly is installed, guarantees weight 2, guide rod 3, hammer seat 4 is positioned at more than ground, dynamic probe 12 be positioned at boring and with close contact at the bottom of hole.The wave detector 10 of some is set simultaneously in the certain limit of ground, and makes it be connected with seismograph 9.
After each assembly is connected, by rig 1, weight 2 is risen to distance hammer seat 4 certain altitude, such as 76cm, then weight 2 is made to depart from the cable of rig 1, falls downward hammer seat 4, seismograph 9 records the moment of weight 2 hammer seat 4 by drill pipe sub 7 and Ground Service Plug 8, and when being designated as zero, meanwhile, gathered by wave detector 10 and record seismic data.
Said process can be repeated, to guarantee data acquisition quality.

Claims (5)

1. with the seismic wave test system that dynamic spy is focus, it is characterized in that: be made up of explosive source, seismic event trigger and the multiple wave detector (10) visited dynamic in hole,
In described hole, dynamic explosive source of visiting comprises weight (2), guide rod (3), hammer seat (4), drilling rod (6) and dynamic probe (12), and described guide rod (3), drilling rod (6) are from top to bottom connected successively with dynamic probe (12); Described weight (2) is arranged on guide rod (3), can promote and fall along guide rod (3) under the effect of external force; Described hammer seat (4) is arranged on the lower end of guide rod (3), for supporting the weight (2) of whereabouts; During use, described dynamic probe (12) be positioned at the boring that extends to below ground cover and with close contact at the bottom of hole, described guide rod weight (2), guide rod (3), hammer seat (4) are positioned at more than ground;
Described seismic event trigger comprises drill pipe sub (7), Ground Service Plug (8) and seismograph (9), one end of described drill pipe sub (7) is connected on described drilling rod (6), one end close proximity to ground of described Ground Service Plug (8) is placed, and described drill pipe sub (7) is connected with seismograph (9) by cable with the other end of Ground Service Plug (8);
Described multiple wave detector is arranged on the ground around boring in certain limit, and each wave detector (10) is all connected with seismograph (9).
2. seismic wave test system according to claim 1, is characterized in that: one end that described Ground Service Plug (8) close proximity to ground is placed is placed on the ground around described boring in radius 2m.
3. seismic wave test system according to claim 1 and 2, is characterized in that: described guide rod (3), drilling rod (6) and dynamic probe between (12) connect respectively by joint.
4. seismic wave test system according to claim 3, it is characterized in that: described weight (2) is for cylindrical, wherein be formed centrally through hole, described guide rod (3) passes from the through hole of weight (2), weight (2) by cable suspension on rig (1).
5. seismic wave test system according to claim 4, is characterized in that: the diameter of described guide rod (3) is 42mm, the through-hole diameter 3-4mm larger than the diameter of guide rod (3) at described weight (2) center; The diameter of described hammer seat (4) is less than 1/2 of described weight (2) diameter and is greater than 100mm.
CN201520867769.3U 2015-11-03 2015-11-03 Use and move seismic wave test system of spy as seismic source Active CN205080268U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108427142A (en) * 2018-01-30 2018-08-21 广州电力设计院有限公司 A kind of prefabricated pile stake bottom CAVE DETECTION system and method
CN108594293A (en) * 2018-07-05 2018-09-28 安徽理工大学 A kind of small-sized focus generating means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108427142A (en) * 2018-01-30 2018-08-21 广州电力设计院有限公司 A kind of prefabricated pile stake bottom CAVE DETECTION system and method
CN108594293A (en) * 2018-07-05 2018-09-28 安徽理工大学 A kind of small-sized focus generating means

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Address after: 300300 Tianjin Airport Economic Zone Binhai West Road No. 82 two Laguna building 201

Patentee after: China Railway Design Group Limited

Address before: 300300 Tianjin Airport Economic Zone Binhai West Road No. 82 two Laguna building 201

Patentee before: China Railway Third Survey and Design Institute Group Ltd.