阅读说明：本技术 一种采用复合型锚杆的一孔多标分层沉降监测系统 (One-hole multi-standard layered settlement monitoring system adopting composite anchor rod ) 是由 杨天亮 严学新 林金鑫 黄鑫磊 吴建中 陈天河 许言 张欢 杨柏宁 唐继民 张金 于 2019-09-30 设计创作，主要内容包括：本发明涉及地面沉降监测技术领域,尤其涉及一种采用复合型锚杆的一孔多标分层沉降监测系统,包括若干复合型锚杆以及电阻式测量头装置,若干复合型锚杆一一对接且与电阻式测量头装置相连接,电阻式测量头装置测量复合型锚杆的沉降；复合型锚杆由液压机械爪和承压型扩体组合构成,液压机械爪具有可向外张开的锚爪杆,承压型扩体具有可经注浆扩张的编制体。本发明的优点是：增加了锚固距离,可提供较大的锚固强度；结构可靠性,稳定性高；在小空间上布置优势大；液压管不存在堵塞管道的可能性,锚爪撑开锚固进土层的时间短；保证了承压型扩体注浆过程中,锚杆不会出现下沉；可实现锚杆与目标地层的全面高强度耦合；可实现分层沉降信息的智能化采集。(The invention relates to the technical field of ground settlement monitoring, in particular to a one-hole multi-standard layered settlement monitoring system adopting composite anchor rods, which comprises a plurality of composite anchor rods and a resistance type measuring head device, wherein the composite anchor rods are in one-to-one butt joint and are connected with the resistance type measuring head device; the composite anchor rod consists of hydraulic mechanical claw with outwards opened anchor claw rod and pressure bearing expanding body with grouting expandable braided body. The invention has the advantages that: the anchoring distance is increased, and larger anchoring strength can be provided; the structure reliability and the stability are high; the arrangement advantage on a small space is great; the hydraulic pipe has no possibility of blocking the pipeline, and the time for the anchor fluke to prop open and anchor the soil inlet layer is short; the anchor rod is ensured not to sink in the pressure-bearing type expansion grouting process; the comprehensive high-strength coupling of the anchor rod and the target stratum can be realized; and the intelligent acquisition of the layered settlement information can be realized.)

1. The utility model provides an adopt many marks of a hole layering of compound stock settlement monitoring system which characterized in that: the resistance type measuring head device is used for measuring the settlement of the composite anchor rods; the composite anchor rod is formed by combining a hydraulic mechanical claw and a pressure-bearing type expansion body, wherein the hydraulic mechanical claw is provided with an anchor claw rod capable of being opened outwards, and the pressure-bearing type expansion body is provided with a woven body capable of being expanded through grouting.

2. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using a composite anchor rod according to claim 1, wherein: the pressure-bearing type expansion body is provided with a displacement rod, the glass fiber displacement rod is connected with the resistance type measuring head device, and the resistance type measuring head device measures the displacement of the glass fiber displacement rod so as to embody the sedimentation of the composite anchor rod.

3. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using the composite anchor rod as claimed in claim 2, wherein: the resistance type measuring head device comprises a mark post, a measuring rod, a sliding connecting ring and measuring equipment, wherein one end of the mark post is connected with the glass fiber displacement rod, the other end of the mark post is connected with the sliding connecting ring, the sliding connecting ring is sleeved on the periphery of the measuring rod, and the top end and the bottom end of the measuring rod are connected with the measuring equipment.

4. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using a composite anchor rod according to claim 1, wherein: hydraulic mechanical claw includes hydraulic cylinder body, piston rod, connection platform anchor fluke pole, the domatic base of deformation, wherein, the piston rod is arranged in the inside of hydraulic cylinder body, the piston rod is connected connection platform, connection platform connects anchor fluke pole, the bottom of anchor fluke pole is located among the domatic base of deformation, the domatic base of deformation is provided with domaticly, anchor fluke pole is in the piston rod passes through under connection platform's the drive, with domatic for the guide become horizontal motion by vertical motion realization anchor fluke pole outwards opens.

5. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using the composite anchor rod as claimed in claim 4, wherein: the hydraulic mechanical gripper further comprises a structural top plate, the structural top plate is arranged on the upper portion of the hydraulic cylinder body through a structural connecting rod and a bolt, and the hydraulic cylinder body is further connected with a hydraulic inlet pipe and a hydraulic outlet pipe respectively.

6. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using a composite anchor rod according to claim 1, wherein: the pressure-bearing type expansion body comprises a structural cylinder body, a woven body, a grouting pipe and a glass fiber displacement rod, wherein the woven body is sleeved outside the structural cylinder body and communicated with the structural cylinder body, and the grouting pipe and the glass fiber displacement rod are respectively connected with the structural cylinder body.

7. The system for monitoring the subsidence of a hole and a plurality of marks by layers by using the composite anchor rod as claimed in claim 6, wherein: the pressure-bearing type expansion body further comprises a connecting platform, and the connecting platform is fixedly connected with the hydraulic mechanical claw through a connecting anchor rod.

Technical Field

The invention relates to the technical field of ground settlement monitoring, in particular to a one-hole multi-standard layered settlement monitoring system adopting a composite anchor rod.

Background

The ground subsidence is a geological phenomenon of ground elevation reduction caused by loose stratum compression due to natural factors and human activities, is a global environmental geological problem, mostly occurs in coastal cities with developed economy and numerous population, and brings influences of different degrees on city safety and sustainable development. The ground settlement is a comprehensive result of the layered settlement of different stratums, so that the high-precision layered settlement monitoring needs to be carried out for mastering and researching the ground settlement characteristics, causes and prevention and treatment measures thereof.

At present, bedrock marking and layered marking measurement are main technical means for carrying out layered settlement monitoring. The bedrock mark is a special observation point buried on the underground complete bedrock and can be used as an elevation control point for monitoring ground settlement and layered settlement. The layered mark is a special observation point buried in soil layers with different depths and sand-containing layers underground according to the properties of the soil layers, and is a facility for measuring the deformation of loose soil layers acknowledged in the world. However, a bedrock mark or a layered mark needs to be realized by a single drilling hole, and a plurality of drilling holes are needed for carrying out layered settlement monitoring on a plurality of strata, so that a large area of land needs to be occupied. In coastal cities with increasingly tense land resources, such as the Yangtze delta area of China, facilities and instruments capable of drilling one hole and realizing monitoring of multiple stratum settlement are urgently needed.

At present, two types of instruments and equipment are mainly used for monitoring the settlement of a plurality of strata in a drilled hole, and the instruments and the equipment are respectively a multipoint displacement meter and a magnetic ring type settlement meter.

The multi-point displacement meter is assembled with a plurality of anchoring devices through extension rods, after drilling is completed, grouting is firstly carried out to the deepest anchoring point, a first anchoring point is anchored by grouting, then a bentonite ball is filled above the first anchoring point to a certain distance below a second anchoring point, grouting is started to anchor the second anchoring point, and the steps are adopted to sequentially anchor the second anchoring point to the ground surface. The extension rod connects the anchor head with the measuring head, when the measured structure is deformed, the measuring rod is driven by the anchor head of the multipoint displacement meter, the measuring rod pulls the reference rod in the measuring head to generate displacement deformation, and deformation information of different soil layers can be obtained by measuring the deformation. The settlement gauge of the multipoint displacement meter has the problems of low anchoring strength, limited layered settlement measuring capability, low automation degree of the gauge, poor reliability, long data acquisition time and the like.

The magnetic ring type settlement gauge mainly works in the mode that vertical pipes are vertically buried in a soil body, magnetic rings are buried on the vertical pipes at certain intervals, and when the settlement ring is sunk to a preset height, fork spring pieces are opened and inserted on the soil wall, so that the magnetic rings and the soil body deform synchronously. The electromagnetic measuring head is placed into the vertical pipe, the position information of the magnetic ring is measured, the settlement amount of each settlement ring and the relative settlement amount between every two settlement rings are calculated, and then the layered settlement or rebound numerical value of the soil body can be obtained. The magnetic ring type settlement meter has the defects of low measurement result precision, untimely data transmission, easy missing report of data, influence on normal measurement due to overlarge deformation of surrounding rock and soil bodies and the like.

Disclosure of Invention

The invention aims to provide a one-hole multi-standard layered settlement monitoring system adopting a composite anchor rod according to the defects of the prior art, wherein the composite anchor rod is formed by combining two anchoring forms of different mechanisms and forms, namely a hydraulic mechanical claw and a pressure-bearing type expansion body, and is matched and connected with a resistance type measuring head device to realize multi-standard high-precision layered settlement monitoring of a plurality of permanent anchoring points in a drill hole.

The purpose of the invention is realized by the following technical scheme:

the utility model provides an adopt many marks of a hole layering of compound stock settlement monitoring system which characterized in that: the resistance type measuring head device is used for measuring the settlement of the composite anchor rods; the composite anchor rod is formed by combining a hydraulic mechanical claw and a pressure-bearing type expansion body, wherein the hydraulic mechanical claw is provided with an anchor claw rod capable of being opened outwards, and the pressure-bearing type expansion body is provided with a woven body capable of being expanded through grouting.

The pressure-bearing type expansion body is provided with a displacement rod, the glass fiber displacement rod is connected with the resistance type measuring head device, and the resistance type measuring head device measures the displacement of the glass fiber displacement rod so as to embody the sedimentation of the composite anchor rod.

The resistance type measuring head device comprises a mark post, a measuring rod, a sliding connecting ring and measuring equipment, wherein one end of the mark post is connected with the glass fiber displacement rod, the other end of the mark post is connected with the sliding connecting ring, the sliding connecting ring is sleeved on the periphery of the measuring rod, and the top end and the bottom end of the measuring rod are connected with the measuring equipment.

Hydraulic mechanical claw includes hydraulic cylinder body, piston rod, connection platform anchor fluke pole, the domatic base of deformation, wherein, the piston rod is arranged in the inside of hydraulic cylinder body, the piston rod is connected connection platform, connection platform connects anchor fluke pole, the bottom of anchor fluke pole is located among the domatic base of deformation, the domatic base of deformation is provided with domaticly, anchor fluke pole is in the piston rod passes through under connection platform's the drive, with domatic for the guide become horizontal motion by vertical motion realization anchor fluke pole outwards opens.

The hydraulic mechanical gripper further comprises a structural top plate, the structural top plate is arranged on the upper portion of the hydraulic cylinder body through a structural connecting rod and a bolt, and the hydraulic cylinder body is further connected with a hydraulic inlet pipe and a hydraulic outlet pipe respectively.

The pressure-bearing type expansion body comprises a structural cylinder body, a woven body, a grouting pipe and a glass fiber displacement rod, wherein the woven body is sleeved outside the structural cylinder body and communicated with the structural cylinder body, and the grouting pipe and the glass fiber displacement rod are respectively connected with the structural cylinder body.

The pressure-bearing type expansion body further comprises a connecting platform, and the connecting platform is fixedly connected with the hydraulic mechanical claw through a connecting anchor rod.

The invention has the advantages that:

(1) the hydraulic mechanical claw adopts a vertical anchoring claw, and the angle (90 degrees) of the vertical anchoring claw is changed through hydraulic extrusion so as to be horizontally opened, thereby greatly increasing the anchoring distance and providing larger anchoring strength;

(2) the hydraulic mechanical structure has high reliability and stability; the hydraulic pipe has small diameter and great arrangement advantage in small space;

(3) hydraulic oil is poured in advance, the possibility of blocking a pipeline does not exist theoretically, and once the anchor fluke is placed in place, the time for the anchor fluke to prop and anchor the anchor fluke into the soil layer is short;

(4) the hydraulic mechanical claw ensures that the anchor rod does not sink in the pressure-bearing type expansion grouting process;

(5) the high-strength anchoring provided by the pressure-bearing type expansion body is combined with the anchoring strength of the hydraulic mechanical claw, so that the comprehensive high-strength coupling of the anchor rod and the target stratum can be realized;

(6) the intelligent acquisition of the layered settlement information can be realized by adopting the resistance-type measuring head.

Drawings

FIG. 1 is a schematic view of a hydraulic mechanical claw and a pressure-bearing type expanding composite anchor rod in the invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic structural view of a hydraulic gripper according to the present invention;

FIG. 4 is a schematic structural view of a pressure-bearing expanded body according to the present invention;

FIG. 5 is a schematic structural diagram of a resistive measuring head device according to the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-5, the labels 1-26 are respectively shown as: the device comprises a composite anchor rod 1, a hydraulic mechanical claw 2, a pressure-bearing type expansion body 3, a connecting anchor rod 4, a resistance type measuring head device 5, a hydraulic cylinder body 6, a piston rod 7, a connecting platform 8, an anchor claw rod 9, a deformation slope base 10, a structural connecting rod and a bolt 11, a structural top plate 12, a hydraulic pipe 13, a hydraulic pipe 14, a structural cylinder body 15, a high polymer braided material body 16, a connecting platform 17, a grouting pipe 18, a glass fiber displacement rod 19, a mark rod 20, a measuring rod 21, a sliding connecting ring 22, an electric wire 23, an electric wire 24, an electric wire 25 and a measuring head device outer frame 26.